Sevil Yücel

• Doctor of Engineering
• Yıldız Technical University

Background Bioactive glass (BG) is a promising alternative to conventional autogenous and allogeneic bone grafts with osteoconductive, osteoinductive, and antimicrobial properties. The effects of its use in comparison to allograft in the context of benign bone lesions remain less explored. Purpose We sought to compare the efficacy of 45S5 BG granu...

Silica aerogels have a wide range of applications in enzyme immobilization studies as silica-based carrier materials with low density, high surface area and porosity. Their properties provide a more stable environment for enzymes and allow them to maintain their current activities. Immobilization of enzymes enables higher efficiency in enzyme-catal...

The current work presents the findings of production, optimization, and comparative study on chemical, structural, morphological, and water vapor adsorption properties of low-cost water glass-based magnesium silica aerogels (Mg-WG) and eco-friendly rice hull ash-based magnesium silica aerogels (Mg-RHA). The production parameters (Si: Mg molar ratio...

Aim This study aimed to investigate the effects of 45S5 bioactive glass‐ointment (BG) on cutaneous wound healing in rats at the molecular, biochemical, and histopathological levels. Materials and Methods Thirty‐two rats were divided into four groups (n = 8): Control, Sham, BG, and DEX (Dexpanthenol). While no wound treatment was applied to the CON...

Several therapeutic approaches have been developed to promote bone regeneration, including guided bone regeneration (GBR), where barrier membranes play a crucial role in segregating soft tissue and facilitating bone growth. This study emphasizes the importance of considering specific tissue requirements in the design of materials for tissue regener...

Over the past decade, the increasing emphasis on sustainable material production has brought aerogel technology to the forefront of scientific and industrial research. Aerogels are known for their extraordinary properties, such as high porosity and low density, which make them suitable for a wide range of applications from thermal insulation in bui...

The solubility/degradability of bioactive glasses play crucial role in bone tissue engineering applications owing to the release of ions from their structure, which exert therapeutic effects on tissues. The present study evaluates the findings of a detailed investigation on the main features and solubility behaviors of newly formulated Nb incorpora...

The clarification conditions and the selection of the clarification agent are pivotal in eliminating the haze components from red grape juice (RGJ) while minimizing the loss of functional color components. In this context, we synthesized a water glass-based APTES functionalized magnesium silica aerogel (MSA-NH3) incorporating 61.44 molecules/nm2 of...

This study aimed to evaluate the impact of dietary boron on osteoporosis in postmenopausal Jordanian women. Sixty‐six women diagnosed with osteoporosis were recruited and data on personal information, dietary habits, medical history, and lifestyle were collected. Bone mineral density, serum calcium, and serum vitamin D measurements were obtained fr...

Involving a succession of oil refining stages for edible oil production, a notable constraint lies in the necessity to employ diverse adsorbents at various steps within these processes. This study investigates the synthesis of mesoporous silica aerogels from rice husk ash, comparing their efficacy in physical sunflower oil refining with earth clay...

This study reports the fabrication and characterization of poly(vinyl alcohol) (PVA) and gelatin (Gel)-based nanofiber membranes cross-linked with citric acid (CA) by a green electrospinning method in which nano 45S5 bioglass (BG) and urea were incorporated. Various combinations of PVA, gelatin, and BG were prepared, and nanofiber membranes with av...

Recently, advancements in fabrication technology have brought a new aspect to the field of tissue engineering. By utilizing advanced techniques in 3D manufacturing and biomaterials, scientists have successfully created tissue engineering scaffolds with complex three-dimensional structures and customized chemical compositions that closely mimic the...

This research explores the crystallization process of honey during storage with a focus on its dissolution dynamics and essential characteristics. The investigation includes the examination of the effects of heat treatment at different temperatures (45–90 °C) and durations (23–960 min) on the induced crystallization of honey at 14 °C. Various analy...

In bone tissue engineering, scaffold attributes such as pore dimensions and mechanical strength are crucial. This study synthesized polycaprolactone dimethacrylate (PCLDMA) from polycaprolactone (PCL), incorporating epichlorohydrin (Epi-PCL) and methacryloyl chloride (Meth-Cl). PCLDMA was blended with polylactic acid (p-PLA) to 3D-print bone scaffo...

Over the past decade, aerogel sustainability has emerged as a pivotal area, revealing insights and identifying significant gaps. Exploring the sustainability dynamics of aerogel production, this study utilizes the robust methodology of Life Cycle Assessment to navigate environmental complexities. This study created a road map for sustainable aeroge...

In conventional drug treatments, high toxic effects, low solubility, and low bioavailability of the active substance cause insufficient drug release in the target tissue and undesirable side effects in healthy tissue. Various drug delivery systems are utilized to eliminate these undesirable effects. Mesoporous silica nanoparticles (MSN) are biocomp...

Pomegranate juice (PJ) is the major pomegranate product that offers a simple way to consume pomegranate’s biologically active compounds, obtained from arils. In this study, we objectively investigate the physiochemical properties such as pH value, total soluble solids, color parameters, fructose and glucose contents, hydroxymethyl furfural (HMF) co...

Okra (Abelmoschus esculentus L.) is known for its high nutritional value, including its content of phytochemicals. This study aims to investigate the effect of drying and freezing conditions on the phytochemical content of okra. Our results indicated that both air-drying and freezing okra during 6 months of storage showed a significant decrease in...

Photocatalysis reactions are of great interest as an effective tool against the profusely increasing population of antibiotic-resistant bacteria species. In particular, the promising evidence on plasmon-sensitized titanium dioxide (TiO2) photocatalysis inspired us to investigate their antibacterial activity stemming from the photogenerated reactive...

The silica-calcium-magnesium ternary aerogels were prepared by a solvent exchange method and a subsequent ambient pressure drying process. The effect of process parameters such as feeding rate (9-70 mL.min-1) and molar ratio (Si/(Ca:Mg) = 1:1 - 3:1) on the material characteristics including density, elemental content, surface area, pore size, pore...

Polymeric barrier membranes are used in periodontal applications to prevent fibroblastic cell migration into the cavities of bone tissue and to properly guide the proliferation of tissues. In this study, the fabrication, characterization, bioactivity, and in vitro biological properties of polyvinyl alcohol-based nanofibrous membranes containing nan...

Background Bone is a dramatically regenerating tissue with the ability to heal after trauma, although intensive surgical management is required to treat considerable damage. In this study, 45S5 bioactive grafts were prepared through the melt-quenched method in compliance with the guidelines on medical product requirements (MDD regulations; 93/42/EE...

The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which emerged in 2019, cut the epoch that will make profound fluctuates in the history of the world in social, economic, and scientific fields. Urgent needs in public health have brought with them innovative approaches, including diagnosis, prevention, and treatment. To e...

In this study, mesoporous calcium silica aerogels were produced for use as an anticaking food additive in powdered foods. A low-cost precursor (sodium silicate) was used, and calcium silica aerogels with superior properties were obtained with different pH values (pH 7.0 and pH 9.0) by modeling and optimizing the production process. The Si/Ca molar...

For full access: https://rdcu.be/c6T3W Bioactive glass (BG) has recently been proposed to be used for wound healing with Vaseline®. To accelerate the wound healing by incorporation of the Zinc (Zn) into BG, undoped and 5 wt% zinc-doped 45S5 BG (16 wt%) were prepared with Vaseline® to create the ointments for wound healing as a VBG and VBG-Zn, resp...

Bioactivity is critically important for a glass material to be used in bone tissue engineering, which is stated to be affected by the addition of therapeutic ions such as Sr and Cu. In this study, the findings of a comprehensive in vitro study on the bioactivity of previously produced and characterized in terms of structure, composition and thermal...

The current work presents and discusses the findings of a comprehensive study on the structural, chemical and thermal properties of SrO and CuO incorporated SiO2–CaO–Na2O–P2O5 amorphous silicate glass with a novel composition. Here, fundamental features (experimental density, oxygen density, and hardness) of all glasses were determined and chemical...

ABSTRACT Negatively charged polyphenols in the low pH environment of dark-coloured beverages like grape juice are one of the main haze components following pectin. The most preferred method for production of clear fruit juice, especially in removing protein and polyphenol turbidity is clarification via using commercial fining agents such as benton...

Bioplastics are environmental‐friendly materials that have been essentially required to reduce global pollution resulting from the accumulation of conventional plastics. The current study was focused on simultaneous extraction of cellulose fiber and crystal biogenic silica from the same rice husks and preparation of silica‐reinforced cellulose‐base...

ÖN SÖZ Biyomalzemeler alanı, 1980'lerdeki başlangıcından bu yana, fırsatlar, yaratıcılık ve disiplinlerarası zengin iş birliği ile ilerlemektedir. Biyomalzemeler, biyomedikal alandaki bilimsel ve teknolojik gelişmelerde öncü role sahiptir. Bu yüzden ‘‘Biyomalzemeler’’ özellikle Biyomühendislik ve Biyomedikal Mühendisliği öğrencilerinin üniversitede...

Dextran, which is a neutral polysaccharide that consists of α-1,6 linked d-glucose units, has attracted increasing attention and is widely studied in the drug delivery and biomedical fields due to its biodegradability, biocompatibility, and proven clinical applications. Dextran contains a high number of hydroxyl functional groups that allow chemica...

The skeletal system is the most important component of our body that gives shape to our body, keeps it alive, and protects our internal organs against external impacts. When skeletal system is damaged , it can regenerate itself, but if the damage is big and severe, it cannot be regenerated by normal physiological processes. Therefore, bone damage r...

Zeolites are crystalline, hydrated aluminosilicates of alkaline earth cations composed of 3-dimensional frameworks,which have been widely used for adsorbents, catalysts, ion exchangers, molecular sieves for separation, and sorting themolecules according to their crystalline size dimensions. Kaolin is an industrial clay, consisting of hydrated alumi...

In this study, we prepared biosilica and commercial silica based bioactive glasses with melt-quenching method, and utilized them as the solid phase of composite putties produced using sodium alginate polymer as the liquid phase. Biosilica based and commercial silica based bioactive glass containing composite putties were investigated and compared i...

Kemik dokusu, kısmi hasarlı bölgede destek materyal kullanmadan rejenere olabilme kabiliyetine sahiptir ancak hasarlı bölge büyük ve kritik boyutta olduğunda normal fizyolojik süreçlerle rejenerasyonun desteklenmesi için bölgedeki dokuların ihtiyacı na uygun bir niş sağlanması gerekmektedir. Bu ihtiyaca yönelik, kemik hasarlarındaki rejenerasyon sü...

This study aimed to investigate the effects of inclusion of Al2O3‐doped bioactive glass (BG) and silane treatment on physical properties and bioactivity behavior of resin‐based experimental dental composites (EDCs). Melt‐derived 45S5 BG and alumina doped 45S5 BG were prepared and incorporated into EDCs with and without silanization. EDCs prepared w...

In recent years, fossil-based fuels have been used to supply the energy needs of the world. Fossil-based fuels induce accumulation of the atmospheric CO2 which causes global warming. One of CO2 source is flue gas emission from the power plant. The microalgae have been considered excellent biological materials for reduction CO2 with ability to photo...

In recent years, the food industry gave attention to extend shelf life and storage. There is a huge endeavor exactly about to extend shelf life. The recognition and usage of many natural and synthetic food additives increased with the widespread consumption of processed foods in the twentieth century. Food additives have been used for many years al...

In this study, PVA/silica gel composite films were prepared. For this, sodium silicate solution was produced from rice hull ash (RHA) which is a cheap agricultural waste by alkali extraction method. Sodium silicate solutions were gelated at pH 7 with HCl addition by sol-gel method. Silica gels were added to PVA films at first time with this study t...

Studies have been carried out to determine the optimum conditions for chitosan nanoparticles. Various formulations have been made which can affect the size and polydispersity index of the nanoparticles and the process variables have been investigated. These formulation and process variables were defined and optimized to obtain the smallest particle...

The main objective of the present study was to investigate the application of Box–Behnken design which is a type of optimization design of response surface methodology (RSM) to predict and optimize some aging condition of magnesium silica aerogel (MSA) for improving surface properties such as surface area, pore volume and pore size. Brunauer-Emmett...

Today, different therapeutic approaches are being developed because of the increased risk of colorectal cancer. In this context, we synthesized organic/inorganic hybrid nanoparticles using dextran (Dex) and dextran aldehyde (Dex-CHO) as organic polymers for the coating of inorganic silica aerogels. These Dex and Dex-CHO coated silica aerogels serve...

The surface and physico-chemical properties of metal doped silica aerogels are highly influenced by aging conditions like temperature and time. Increasing aging temperature and time improve the skeletal strength and stiffness of the networks. The aim of this study was to synthesis Mg-doped silica aerogels using water glass and determine the effect...

The objective of this study was to investigate the effect of magnesium (1 wt%) and aluminum (1 wt%) incorporation on the in vitro bioactivity and biodegradation behavior of 45S5 bioactive glasses synthesized from rice husk biogenic silica. The performance of biogenic silica-based samples was compared well with commercial silica-based counterparts....

This work is based on a natural polymer chitosan used in a nanoparticulate drug delivery system for the controlled release of amiodarone along with β-cyclodextrin. Amiodarone-loaded chitosan nanoparticles were prepared using the ionic gelation method aided by sonication. Amiodarone loading on chitosan nanoparticles was done under optimum conditions...

One of the most important issues of modern medicine is the functional and aesthetic reconstruction of bone tissue after any loss. Selection of biomaterials and manufacturing techniques used in the production of tissue scaffolds is very important for bone tissue regeneration capacity. In this study, biocomposite tissue scaffolds were developed using...

Bone has a dynamic structure, since it is remodelled during the lifespan to sustain its structure and function. Extracellular matrix (ECM) is playing a tremendously important role, such as cell adhesion, immobilization of growth factors and nucleation of mineralization in bone development phase. It consists of proteins and leads the bone remodellin...

Son zamanlarda, kovalent olmayan bağların organik sentezdeki ve kristal tasarımdaki rolü hakkındaki bilimsel çalışmalar (Nenajdenko vd., 2017,), özellikle de halojen-halojen bağlarının rolü üzerinde çalışmalar giderek artmaktadır (Shikhaliyev vd., 2018). Daha önceki çalışmalarımızda, katalitik olefinizasyon reaksiyonu ortamında (KOR), benzoik aldeh...

Literatürde brom içeren bileşenlerin, biyoaktif metabolitler ve çeşitli ilaçların yapısına ilave edildiği çalışmalar bulunmaktadır [Guerrero vd., 2012]. Daha önceki çalışmalarımızda, fenilhidrazonların CCl4 ile reaksiyonundan elde edilmiş dikloro-diazobutadienlerin sentezi incelenmiştir [Shikhaliyev vd., 2018]. Dikloro-diazobutadienlerin boya ve fi...

In recent years, fossil-based fuels have been used to supply the energy needs of the world. Fossil-b ased fuels induce accumulation of the atmospheric CO 2 which causes global warming. One of CO 2 source is flue gas emission from the power plant. The microalgae have been considered excellent biological materials for reduction CO 2 with ability to p...

Astaxanthin is a high antioxidant which is red carotenoid pigment obtained from many microalgae species. It is an important preservative of the immune system and it is used in the treatment of cancer, skin and heart diseases. The most efficient source of astaxanthin is Haematococcus pluvialis microalgae. In this study, the optimum cultivation condi...

In this study, α-TCP and β-TCP were successfully produced via a mechanochemical method from aragonite structures, Clinocardium ciliatum seashells, at 850 °C, 1000 °C, and 1200 °C sintering temperatures. The characterization of the obtained materials was carried out via FT-IR, SEM/EDX, BET, XRD, ICP-OES analysis. Samples were soaked for 21 days in s...

In this study, it was aimed to produce by melt-quenching method non-additive (SiO2-Na2O-P2O5-CaO) and ion additive (SiO2-Na2O-P2O5-CaO-MgO-ZnO-K2O-CuO) bioactive glasses (different forms; powder and granule). In vitro bioactivity and biodegradability properties of bioactive glasses in different forms (granule and powder) were examined with Simulate...

In vitro bioactivity, biodegradation, and biocompatibility behavior of a new bioactive glass systems were investigated with the incorporation of selenium oxide, for the replacement of sodium oxide in the traditional 45S5 bioglass composition. The apatite-forming ability of melt-derived bioactive glasses was evaluated by immersion studies in simulat...

Positron emission tomography-computed tomography (PET-CT), which is among the methods used for oncologic imaging in today's health sector, is used for staging, detection of recurrence and evaluation of response to treatment of many cancer types. However, 2-deoxy-2-(18F)fluoro-D-glucose (18F-FDG), which is used as a cancer imaging agent in nowadays,...

Nowadays, the interest in the cultivation of microalgae found in a group of aquacultures is increasing. The first reason of this interest is that microalgae, can be evaluated in different fields as food supplements due to being rich in carbohydrates, proteins and especially high fatty acids contents [1]. Microalgaes can also be used as fertilizer,...

Microalgae are microorganisms that grow in water and are generally rich in carbohydrates, proteins, lipids and vitamins. Microalgae are used in many different fields such as food industry, cosmetics, health, animal feeds, fertilizer and water treatment. It is also a good source of pigment used in coloring [1]. Microalgae commonly used in recent stu...

GİRİŞ Nanopartiküllerin, geniş yüzey alanina, eşsiz kimyasal ve fiziksel özelliklere sahip olmaları sebebiyle biyoteknoloji, farmakoloji, tıp, sensörler gibi alanlarda kullanılmaya başlanmıştır. Bunlardan belki de en ideali gümüş nanopartiküllerdir (AgNp). AgNp’ler 3 farklı yöntem ile sentezlenmektedir: fiziksel, biyolojik ve kimyasal yöntem. Kimy...

Aerogels and their composites are known as ultralight (0.003-0.15 kg/m3) solid materials and also take place in many academic and industrial applications with unique features as their high porosity (80-99.8%) and high surface area (500-1200 m2/g). Aerogels produced frequently by sol-gel method are obtained by using many different starting materials...

Dextranase is an enzyme found in the large intestine but not in the gastric in the human digestive system. Thus, model drug would be transferred to large intestine without release. In this research, dextran cross-linked with glutaraldehyde was used as a coating material for silica aerogel powders. L-Ascorbic acid was used as a model drug. Dextran c...

İdrar kateterleri üropatojenlerin üriner sisteme rahat geçişine imkân vererek bakteriüri ve biyofilm oluşumuna izin vermektedir. Hastaneye yatan hastaların %15-25’ine hastanede yattığı süre içinde en az bir kez üriner kateter uygulandığı bilinmekle birlikte, nozokomiyal üriner sistem enfeksiyonlarının yaklaşık %60-80’i katetere bağlı olarak gelişme...

The growing cognizance of environmental matters elucidates the increasing attention thought the evaluation of bio-based by-products and waste materials in various applications. The agricultural-based industry results in considerable amounts of residues containing silica. In the past decade, extensive research studies had been executed to evaluate a...

Design and development of drug delivery systems have been attractive in recent years because of their advantages such as targeting to the tumor site during treatment, reducing the toxic effects of the drug, and adjusting drug dosage. Aerogels have gained increasing attention in the biomedical field as a potential tool for targeted drug delivery sys...

In this study, hollow microparticles were produced with polymethylsilsesquioxane/chitosan/bovine hydroxyapatite/hexagonal boron nitride (PCBB) polyblend using single-nozzle electrospinning method. Also, hollow microparticles are loaded with amoxicillin (AMX) and their drug delivery capabilities have been studied according to a treatment of osteomye...

Bioactive glasses which contain silica as a major element (45%-60%; wt%) are used commonly due to its bioactivity and can be preferred in bone tissue engineering because of its behaviours in simulated body fluid (SBF) and ease of forming hydroxyapatite which comprises of 70% of bone. At the same time, alginate which is a natural biopolymer is an av...

Objectives To identify a robust NADP+ dependent formate dehydrogenase from Lactobacillus buchneri NRRL B-30929 (LbFDH) with unique biochemical properties. Results A new NADP+ dependent formate dehydrogenase gene (fdh) was cloned from genomic DNA of L. buchneri NRRL B-30929. The recombinant construct was expressed in Escherichia coli BL21(DE3) with...

In this study, whey protein concentrate (WPC) and poly (ε-caprolactone) (PCL) composite nanofibers were prepared by electrospinning in the diameter of 50-350nm. Characterization tests of the polymer solutions such as density, viscosity, conductivity was studied. Fourier-transformed infrared spectroscopy (IR) results confirmed that the processed fib...

Kanser immünoterapisinde kullanılan aşılar, kanser tedavilerinde umut verici bir terapötik yaklaşımı göstermektedir. Aşılar, esas olarak, endojen olarak işlenmiş tümör antijenlerini tanıyan ve İnsan Lökosit Antijen Sınıf-I molekülleri (HLA class-I) ile bağlantılı hücre yüzeyi üzerinde sunulan bağışıklık sisteminin (sitotoksik T-lenfositler (CTL)) a...

Silika aerojeller, yüksek yüzey alanları, geniş gözenek hacimleri, düşük yoğunlukları ve iyi adsorblama kapasiteleri sayesinde ilaç taşıma sistemi olarak kullanılabilen inorganik malzemelerdir. Biyouyumlu yapıya sahip silika aerojeller, kolay ve maliyetsiz bir yöntem olan sol-jel yöntemi ile sentezlenebilmekte ve yüzeyleri farklı fonksiyonel grupla...

In this study, a sea shell was converted into bioceramic phases at three different sintering temperatures (450oC, 850oC, 1000oC). Among the obtained bioceramic phases, a valuable β-TCP was produced via mechanochemical conversion method from sea snail Turritella terebra at 1000oC sintering temperature. For this reason, only the bioceramic sintered a...

In this study, mineral nutrient and heavy metal (Al, Ca, Cd, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn) contents of the walnut kernels and their co-located soil samples collected from the four different zones of natural walnut forests (Sary-Chelek, Arslanbap, and Kara-Alma in Jalal-Abad Region and Kara-Shoro in Osh Region) in Kyrgyzstan were investigat...

In this study, poly (ε-caprolactone) (PCL) and fish sarcoplasmic protein (FSP) (Mw < 200 kDa) composite nanofibers were fabricated by electrospinning technique. Solution properties such as density, viscosity, conductivity and surface tension were studied as a function of FSP content in the solution. The morphology, molecular interaction, degradatio...

Silica nanoparticles (SiNP) have various advantages like a drug delivery carrier, concluding perfect biocompatibility, hydrophobicity, systemic stability and resistance to pH changes. For improving the chemotherapeutic impact of 5-Fluorouracil (5-FU) in colon cancers, nanoparticles were used and formulated to target colon cancer cells. In this stud...

Silica aerogel, a nanoporous material, was produced by using rice husk ash via sol–gel method. The aim of the study is to examine effects of the acid type (acetic, hydrochloric, nitric, oxalic and sulfuric acid), dryer type (air, freeze, oven and vacuum) and the addition of tetraethyl orthosilicate on the structural and physical properties of aerog...

In this study total lipid contents and fatty acid compositions of total lipids in the muscles of 3 freshwater fish species and 10 marine fish species were examined by gas chromatographic (GC) method. The total lipid contents in the muscles of marine fish species and freshwater fish species varied from 0.53 % to 4.88 % and from 1.86 % to 2.34 %, res...

Sunflower oil has gained special significance because of its widespread all over the world and health benefits. Due to the presence of linoleic acid, oleic acid, palmitic acid, and stearic acid, sunflower oil has an impressive fatty acid profile. Crude sunflower oil is obtained from the seeds of sunflower (Helianthus annuus). Nevertheless, the refi...

Controlled drug delivery systems gained importance in pharmaceutical technology due to the undesired side effects and low solubility of the drug molecules. Silica aerogels, which are biocompatible and biodegradable materials with high porosity, large inner surface area, high surface to volume ratio, large pore volume and high adsorption capacity ca...

Background In this study, starch and polycaprolactone (PCL), composite nanofibers were fabricated by co-axial needle electrospinning technique. Processing parameters such as polymer concentration, flow rate and voltage had a marked influence on the composite fiber diameter. Fourier transform infrared spectroscopy, scanning electron microscopy (SEM)...

In recent years, aerogels attract more attentions from both academic and industrial fields because of their excellent properties as high porosity (85–99.8%), low density (as low as 0.003 g cm−3), low thermal conductivity (as low as 0.01 W/m K), and large specific surface area (up to 1200 m2 g−1). [1, 2]. Aerogels are highly porous and light materia...

The main objective of the present study was to investigate the optimization of lead adsorption onto zeolite NaA. For this purpose, local wheat husk was precleaned with chemical treatment using hydrochloric acid solution to synthesize zeolite NaA under hydrothermal conditions. The unmodified (ZU) and NaCl-modified (ZN) zeolites were characterized by...

Silica aerogels are porous, low-density and very light solid materials synthesized by sol-gel method. Unmodified silica aerogel surface contains hydroxyl groups (-OH). Amine groups can be formed on the silica aerogel surface by functionalization of silica aerogel with 3-(aminopropyltriethoxysilane) (APTES). APTES functionalization occurs by the for...

Current study aimed to utilize agricultural waste, wheat husk to produce valuable materials. Amorphous silica (~88 % purity) was extracted from acid leached wheat husk, and used in the synthesis of zeolite NaA. Crystallization factors were analysed at different temperatures (40–100 °C) and durations (1–3 days) without using template. Crystallizatio...

In the present paper, water glass was used to synthesize silica aerogels and calcium magnesium silica aerogels. The present research was aimed to investigate the effect of gel aging time (1 and 24 hours) on the physical and surface properties of aerogels. Brunauer-Emmett-Teller, Barrett-Joyner-Halenda, Fourier Transform Infrared spectroscopy and sc...

Bioactive glass scaffolds that contain silica are high viable biomaterials as bone supporters for bone tissue engineering due to their bioactive behaviour in simulated body fluid (SBF). In the human body, these materials help inorganic bone structure formation due to a combination of the particular ratio of elements such as silicon (Si), calcium (C...

Aerogels have gained increasing attention in the biomedical field as a potential tool for targeted drug delivery system based on its properties. Silica aerogels consist more than 90% air and less than 10% solid silica in the form of highly cross-linked network structure. The high surface area and the porous structure, as well as their non-toxicity...