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Introduction
Giuseppe Mele, graduated in Chemistry from the University of Bari and PhD in Chemical Sciences, is currently Associate Professor and Scientific Responsible of the Laboratory of Chemistry at the Department of the Engineering for Innovation of the University of Salento.
Main researches interests: - Catalysis and Photocatalysis - Green Chemistry (low environmental impact processes). - Synthesis and characterization of organic and/or metal-organic compounds as precursor of new hybrids and functional materials.
Many research/teaching activities are carried out in the framework of international European (Poland, Spain, Ireland ..) and extra-European (Brazil, China, Egypt, Chile, India) cooperation.
Current institution
Publications
Publications (206)
Porphyrins added to alkyd resins can be a way to enhance these organic coatings through a physical barrier, in order to reduce permeability, decrease porosity, and improve film adhesion. This helps prevent oxygen and ions from acting on metal structures, thereby extending their lifespan. This work aimed at the synthesis and characterization (UV–vis...
A class of hybrid molecularly imprinted polymeric nanoparticles (nanoMIPs) comprising the in situ formation of gold nanoparticles (AuNPs) immobilised in a molecularly imprinted D-gluconate polymer has been designed with the objective of attempting the electrochemical quantification of gluconic acid (GA) in a wine setting. The imprinted polymers wer...
Graphitic carbon nitride (g-C3N4) is a polymer conjugated composed of carbon and nitrogen atoms in a graphite-like structure. Despite its structure, its catalytic potential is limited due to its small surface area, abundance of electron pairs, and low UV absorption. Recent research has focused on synthesizing nanocomposites from g-C3N4 and meso-met...
Gallic acid (GA) is a natural phenolic compound with significant biological properties, including anti‐inflammatory, antioxidant, and anticancer effects. Detecting GA in biological matrices like food and beverages is essential but challenging due to the multitude of GA‐like molecules with similar proprieties and functional moieties. In this study,...
This study presents a comprehensive evaluation of catalytic ozonation as an effective strategy for indigo dye bleaching, particularly examining the performance of four carbon-based catalysts, activated carbon (AC), multi-walled carbon nanotubes (MWCNT), graphitic carbon nitride (g-C3N4), and thermally etched nanosheets (C3N4-TE). The study investig...
Cashew nut shell liquid (CNSL), obtained as a byproduct of the cashew industry, represents an important natural source of phenolic compounds, with important environmental benefits due to the large availability and low cost of the unique renewable starting material, that can be used as an alternative to synthetic substances in many industrial applic...
Fluorescent core–shell silica nanoparticles are largely employed in nanomedicine and life science thanks to the many advantages they offer. Among these, the enhancement of the stability of the fluorescent signal upon fluorophore encapsulation into the silica matrix and the possibility to combine in a single vehicle multiple functionalities, physica...
The number of organic pollutants detected in water and wastewater is continuously increasing thus causing additional concerns about their impact on public and environmental health. Therefore, catalytic processes have gained interest as they can produce radicals able to degrade re-calcitrant micropollutants. Specifically, catalytic ozonation has rec...
In this work, we developed a novel approach to purify [11C]Raclopride ([11C]RAC), an important positron emission tomography radiotracer, based on tailored shape-recognition polymers, with the aim to substitute single-pass HPLC purification with an in-flow trap & release process. Molecular imprinting technology (MIT) applied to solid phase extractio...
Ascribing to the serious environmental and health risks caused by phenanthrene (PENE) and its dangerous degradation intermediate, 9-phenanthrol (9-PENE), solving their contamination problem was extremely urgent. In this work, a novel Fe3O4-terephthalaldehyde (Fe3O4-TERE) magnetic nanomaterial was fabricated by introducing aromatic rings onto Fe3O4...
Since the interest in a bio‐based economy continues to grow, platform molecules must be obtained from biomass in order to gradually overcome those supplied by fossil resources. In the perspective of bio‐based platforms for fine chemicals, the importance of cashew nut shell liquid (CNSL), a well‐known waste of the cashew agroindustry, has increased...
Phenanthrene (PTH) and 9-Phenanthrol (9-PTH) exhibited severe health threats and ecological hazards, for this reason, exploring a high-efficient removing strategy for PTH and 9-PTH could be considered of great urgency. Herein the 4,4'-Biphenyldicarboxaldehyde m-Phenylenediamine Schiff base magnetic polymer (magnetic BIPH-PHEN) was successfully fabr...
This study shows a viable and straightforward microfluidic method of assembly of cardanol (CA) and cholesterol (CH) into amphiphile nanostructures obtained through a hydrodynamic focusing approach according to which an alcoholic solution of CA and CH is constrained within a two-dimensional lamina shape by two lateral streams of borate buffer soluti...
Copper corrosion in acidic cleaning solutions is a major worry for heat exchangers. Corrosion inhibitors derived from natural sources might be a viable option. The isolation of Oleuropein compound from olive leaf and investigation of its anticorrosion potential for copper in 1.0 M H2SO4 solution are reported here. All experimental results from LC–M...
Due to the toxicity and harmful of phenanthrene (PHE) pollutant to human health and the ecosystem, it is extremely urgent to find an accessible technique to efficiently alleviate PHE contamination risk. The Fe3O4-1.5benzhydrylamine (Fe3O4-1.5BENZHY) was successfully fabricated via the silane coupling and Schiff base substitution reaction. The Fe3O4...
This study explored process synergies attainable by integrating a vacuum ultraviolet-based advanced oxidation process with biofiltration. A comparison using granular activated carbon or granular zeolite as filtration media were examined in context of advanced wastewater treatment for potable reuse. Six biofiltration columns, three with granular act...
The search for effective and less toxic drugs for the treatment of Cutaneous Leishmaniasis (CL) is desirable due to the emergence of resistant parasites. The present study shows the preparation, characterization and in vitro antileishmanial activity of green-based silver nanoparticles (AgNPs) with Cashew Nutshell Liquid (CNSL, main constituents: an...
Owing to the more significant health and environmental risks of 9-Phenanthrol (9-PROL) compared to phenanthrene, it was imminent to solve the 9-PROL pollution issues. Herein, Fe3O4-0.75-4,4'-Biphenyldicarboxaldehyde (Fe3O4-0.75BIPHENY) employed as an...
Photocatalytic hydrogen production from water is a clean and sustainable way of energy regeneration. Single-atom catalysts (SACs) have received increasing attention in the field of photocatalysis due to their high...
The photocatalytic oxidation of 5-hydroxymethyl-2-furfural (HMF) under natural solar irradiation was carried out in liquid–solid regime by using a batch reactor. Home prepared meso-tetra aryl substituted porphyrins (Pps) whether metal-free (H2Pp) or containing Cu(II) or Zn(II) complexes (CuPp, ZnPp), opportunely functionalized with lipophilic [(3-n...
Anacardic acid is a renewable product extracted, under mild conditions, from the cashew nuts. Its importance is growing with time thanks to various high-value biotechnological applications. In this research, anacardic acid has been used both in pristine form, and as the main component combined with cholesterol, to prepare three different nanoformul...
Molecular Imprinting Polymer (MIP) technology is a technique to design artificial receptors with a predetermined selectivity and specificity for a given analyte, which can be used as ideal materials in various application fields. In the last decades, MIP technology has gained much attention from the scientific world as summarized in several reviews...
In electrochemical energy storage systems, Li-ion batteries have drawn considerable interest. However, the corrosion of the aluminum current collector in the LiN(SO 2 CF 3 ) 2 electrolyte has a major effect on battery efficiency. To protect the current collector from the corrosive action of the LiN(SO 2 CF 3 ) 2 electrolyte, new nanocomposites base...
Polybenzoxazine is an interesting class of high-performance polymers with potential applications in both the scientific and industrial fields. Due to its remarkable properties along with environmental concerns, different benzoxazine monomers are being synthesized in order to afford more sustainable alternatives for polymeric materials development....
Disposable surgical face masks are usually used by medical/nurse staff but the current Covid-19 pandemic has caused their massive use by many people. Being worn closely attached to the people’s face, they are continuously subjected to routine movements, i.e., facial expressions, breathing, and talking. These motional forces represent an unusual sou...
This chapter provides an overview of titanium dioxide (TiO2)-based materials starting from pioneering studies to recent innovations focused on design sensor devices used for the detection of a large variety of chemical species in different environments. Innovative systems achieved by integration or hybridization of materials with different properti...
This Chapter provides an overview of common procedures used for the preparation, characterization, and exploration of photocatalytic properties of composite materials based on inorganic semiconductors in combination with sensitizers, such as porphyrins, phthalocyanines, and related macrocyclic compounds as promoters of photoinduced processes. In th...
Cutaneous leishmaniasis (CL) is a neglected tropical disease (NTD), endemic mainly in low-income countries that lack adequate basic health care. The emergence of resistant parasites to pentavalent antimonials has led to the search for new treatments for CL. Photodynamic therapy (PDT) is a promising non-invasive and less toxic alternative for the tr...
The interaction between lanthanide diphthalocyanine complexes, LnPc2 (Ln = Nd, Sm, Eu, Gd, Yb, Lu; Pc = C32H16N8, phthalocyanine ligand) and trifluoroacetic acid (TFA) was investigated in benzene, and the stability of the resulting molecular system was assessed based on spectral (UV-Vis) and kinetic measurements. Structural Density Functional Theor...
Metal-free and Cu(II)-lipophilic porphyrins [H2Pp and Cu(II)Pp] loaded on titanium dioxide in the anatase phase (TiO2) were prepared and used as a heterogeneous catalyst for the photoreduction of Cr(VI) to Cr(III) in aqueous suspensions under UV–Vis light irradiation. TiO2 impregnated with copper(II) porphyrin [TiO2@Cu(II)Pp] was the most effective...
Two new porphyrins 5,10,15,20-tetra[3-((ethoxycarbonyl)propoxy)phenyl] porphyrin (H2Pp1), 5,10,15,20-tetra[3-((carboxyl)propoxy)phenyl] porphyrin (H2Pp2) and their copper porphyrins (CuPp1, CuPp2) were synthesized and characterized spectroscopically. The corresponding porphyrin/Cu(II) porphyrin-TiO2 nanohybrids (H2Pp1-TiO2, H2Pp2-TiO2, CuPp1-TiO2,...
The proton exchange membrane fuel cells are the promising sustainable energy sources. The present study focuses on the enhancement the fuel cell performance and the protection of the stainless steel bipolar plate from the corrosion using polyaniline/Zn-Porphyrin composites coatings. The electrochemical properties (polarization and impedance) of the...
Biolubricants are becoming interesting alternatives to mineral lubricants. Despite their advantages, development of lubricants from vegetable oils may compete with food production, turning their use impractical due to socio‐economic aspects. Here, cardanol is used as raw material in the synthesis of novel biolubricants under environmentally friendl...
Confinement of metal centers is a powerful tool to manipulate reactivity and tune selectivity in chemical transformations. While aluminum as a foil is inactive for carbon dioxide reduction and shows high selectivity for the hydrogen evolution reaction, here we show that aluminum confined in a metal organic framework, MIL-53(Al), suppresses hydrogen...
Seven metalloporphyrin‐based porous coordination polymers: Feш (TZP)Poly (CP1), CoII (TZP)Poly (CP2), NiII (TZP)Poly (CP3), CuII (TZP)Poly (CP4), ZnII (TZP)Poly (CP5), MnII (TZP)Poly (CP6), PbII (TZP)Poly (CP7) (TZP = 5,10,15,20‐ tetrakis[4‐(2,3,4,5‐tetrazolylphenyl)] porphyrin) were prepared and characterized. CP1−CP7 are amorphous aggregation sup...
Conversion of CO2 to reduced products is a promising route to alleviate irreversible climate change. Here we report the synthesis of a Co-based phthalocyanine with pyridine moieties (CoPc-Pyr), which is supported on a carbon electrode and shows Faradaic efficiency ∼90% for CO at 490 mV of overpotential (-0.6 V vs reversible hydrogen electrode (RHE)...
A green synthesis of benzoxazines, based upon reaction of cardanol with formaldehyde and primary amines, is achieved in high yields using choline chloride‐urea mixture as deep eutectic solvent. Then, it is demonstrated how the cardanol‐based benxoxazines can be employed as only component for the preparation of a nanovesicular systems.
The effect of the incorporation of Zn-phthalocyanines (ZnPc) nanoparticles into polyaniline coating (PANI) forming a new nanocomposite polyaniline/Zn-phthalocyanines ([email protected]) on the Zn-air battery performance has been investigated. The anticorrosion activity of the [email protected] coating is evaluated by the polarization and electroche...
Here we present for the first time, a high-performance supercapacitor based on [email protected] composite electrode. The evaluation of new supercapacitor has been achieved by cyclic voltammetry (CV) and galvanostatic charge/discharge (GSCD) tests in 1.0 M H2SO4 solution. The as-prepared composite is confirmed by Fourier transform infrared (FT-IR)...
In this work we report the synthesis of new hybrid nanomaterials in the core/shell/shell morphology, consisting of a magnetite core (Fe3O4) and two consecutive layers of oleic acid (OA) and phthalocyanine molecules, the latter derived from cashew nut shell liquid (CNSL). The synthesis of Fe3O4 nanoparticle was performed via co-precipitation procedu...
Benzoxazines are a modern class of monomers which have aroused great interest in the scientific and industrial scenarios due to their remarkable properties. Nevertheless, few is known about the influence of position 2 of the oxazine ring upon its polymerization. Here, we report for the first time, the introduction of natural-occurring aldehydes (va...
Microcrystalline and nanocrystalline anatase (TiO2) based hybrid photocatalysts including selected phthalocyanine sensitizers were explored in photooxidation of 4-nitrophenol (4-NP) in water. Composites obtained with the homemade pure nano-anatase displayed a very poor catalytic performance compared to the other ones prepared from the commercial Ti...
A comprehensive pilot study was carried out to experimentally assess the potential of newly developed treatment trains integrating two-stage AOPs and biofiltration to reach potable reuse water quality standards from municipal wastewater. The processes consisted of a two-stage AOPs with (carbon or limestone) biofiltration, the first AOP (O3/H2O2) se...
In this work, the meso-tetra[4-(2-(3-n-pentadecylphenoxy)ethoxy]phenylporphyrin (H2P), obtained from the cashew nut shell liquid (CNSL), and its zinc (ZnP) and copper (CuP) metallic complexes, were applied as emitting layers in organic light emitting diodes (OLEDs). These compounds were characterized via optical and electrochemical analysis and the...
Sustainable polymers from renewable resources are classified as biobased polymers. Poly(lactic acid) (PLA) is one of the most common biobased polymers applied in the biodegradable plastic industry as a feasible substitute of petrochemical-derived products. Cardanol oil (CA), a renewable resource and relatively low-cost side product of the cashew ag...
The possibility of exploring basic biological phenomena requires the development of new and efficient bio-imaging tools. These should ideally combine the feasibility of production (potentially through the use of green chemistry) together with high targeting efficiency, low cytotoxicity, and optimal contrast characteristics. In this work, we develop...
A new cardanol-based salophen (hpbp) ligand and its manganese complex [Mn(hpbp)] were obtained by microwave-assisted synthesis method, with yields and reaction times of 65% in 20 min and 85% in 5min, respectively. The structural features of compounds were confirmed by electronic (UV–vis and fluorescence), infrared and NMR (1H, 13C) spectroscopic te...
In this study, H2Pc/Epoxy nanocomposite coating was fabricated for anti-corrosion applications. The electrochemical, cross-cut adhesion, impact resistance, bend test, contact angle, scanning electron microscopy (SEM) and thermogravimetric analysis (TGA) analysis were employed to evaluate the performance of new nanocomposites. Corrosion monitoring w...
The aim of this work is to investigate and characterize the photo-ignition process of dry multi-walled carbon nanotubes (MWCNTs) mixed with ferrocene (FeCp2) powder, using an LED (light-emitting diode) as the light source, a combination that has never been used, to the best of our knowledge. The ignition process was improved by adding a lipophilic...
Organic coatings have been widely used to protect carbon steel pipelines from external corrosion; however, they often suffer from permeability and weak adhesion. Here we show that synthetic lanthanide bis-phthalocyanine complexes, LnPc2 (Ln = lanthanide metal, Pc = C32H16N8 denotes the phthalocyanine ligand) can be used to form new nanocomposite co...
Functionalized Fe3O4 nanoparticles (NPs) have emerged as a promising contrast agent for magnetic resonance imaging (MRI). Their synthesis and functionalization methodology strongly affects their performance in vivo. The methodology most used in the literature for the synthesis of Fe3O4 NPs is the thermal decomposition, which has proven to be time-c...
Herein, we described the synthesis of a novel ion-imprinted membrane for the detection of palladium(II) prepared through the glutaraldehyde crosslinking of chitosan with a 4-[(4-Hydroxy)phenylazo]benzenesulfonic acid ligand trapped into the membrane. The imprinting technology was used to improve adsorption capacity and adsorption selectivity, and w...
This work describes the synthesis, characterization, and photocatalytic activity of new composite nanomaterials based on ZnO nanostructures impregnated by lipophlilic porphyrins derived from cashew nut shell liquid (CNSL). The obtained nanomaterials were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), Fourie...
Limited solar photo-activity and recovering the catalysts after photocatalysis reaction are two major drawbacks of the highly active TiO2 powder materials. In this study we propose that copper phthalocyanine (CuPc, Cu(II) tetrakis[4-(2,4-bis-(1,1-dimethylpropyl)phenoxy)]phthalocyanine), which is an metal-organic dye could be used as sensitizer of T...
With relevance to an increasingly large set of environmentally friendly products and processes, a green nanoformulation based on renewables was proposed. Our attention was devoted to cannabidiol (CBD), a Cannabis extract compound known for its intrinsically low chemical stability that limits its therapeutic potential. In this work, the environmenta...
In this work, we report the synthesis of novel inorganic–organic hybrid nanomaterials (GO@Fe3O4/CuPc) and GO@Fe3O4/ZnPc) consisting of sheets of graphene oxide (GO) decorated by iron oxide nanoparticles (Fe3O4), the whole heterostructure functionalized with metallo-phthalocyanines (MPc, M≡Cu or Zn). First the synthesis of nanomaterial (GO@Fe3O4) wa...
Limited solar photo-activity and recovering the catalysts after photocatalysis reaction are two major drawbacks of the highly active TiO2 powder materials. In this study we propose that copper phthalocyanine (CuPc, Cu(II) tetrakis[4-(2,4-bis-(1,1-dimethylpropyl)phenoxy)]phthalocyanine), which is an metal-organic dye could be used as sensitizer of T...
This chapter provides an overview of the progresses of research activities related with the synthesis of functional heterocyclic systems utilizing mainly cardanol-or structural analogous (i.e., anacardic acid, cardol, methylcardol) deriving from the cashew nut shell liquid-as starting material, a renewable feedstock having significant perspectives...
The global concern about the problems caused by the growing consumption of petrochemical compounds, such as global warming and the diminishing of fossil fuels reserves, has given rise to the green chemistry field—based on the design of products and processes that minimize the use and generation of hazardous substances—in both academy and industry....
This work aims to investigate and characterize the photo-ignition phenomenon of MWCNT/ferrocene mixtures by using a continuous wave (CW) xenon (Xe) light source, in order to find the power ignition threshold by employing a different type of light source as was used in previous research (i.e., pulsed Xe lamp). The experimental photo-ignition tests w...
There is a growing global interest for the development of green technologies that allow the use of products with less damage to environment, as well as for maximum and sustainable use of natural resources. The main aim of this study was to develop superparamagnetic nano-biocomposites for application as dielectric resonator antennas, from a combinat...
New asymmetric cardanol-based porphyrins, free-base and coordinated with Ni, Co and Cu, were synthesized and completely characterized as A3B type. Such porphyrins were obtained aiming improved solubility in polar solvents due insertion of an −OH phenolic group. Their thermal and dielectric properties were also evaluated. Changes in the synthetic ro...
This manuscript describes the preparation of green nanovesicles by using cardanol as renewable starting material with embedded minor amounts of phthalazines, a class of heterocyclic bioactive compounds. The nanovesicles were prepared by stirring induced self-assembly in aqueous medium without involvement of any organic solvent. Dynamic light scatte...
In this study, epoxy/metal phthalocyanines nanocomposites (NiPc/Epoxy, CuPc/Epoxy, and ZnPc/Epoxy) are employed to protect carbon steel corrosion in 3.5% NaCl solution. The corrosion performances of the nanocomposites coatings were evaluated by using electrochemical impedance spectroscopy (EIS), open circuit potential (OCP) and scanning electron mi...
The present work made a comparative study between two purification methods, column chromatography and recrystallization, for compounds derived from cardanol, a byproduct of the cashew industry (Anacardium occidentale L.). The compounds were successfully synthesized and characterized, focusing our attention to results obtained in terms of yield, pur...
Objectives Enamel resin infiltrants are biomaterials able to treat enamel caries at early stages. Nevertheless, they cannot prevent further demineralization of mineral-depleted enamel. Therefore, the aim of this work was to synthesize and incorporate specific hydroxyapatite nanoparticles (HAps) into the resin infiltrant to overcome this issue. Meth...
Corrosion inhibition potentials of three phosphites namely, M(HPO3) (where M = Mn, Co and Cu), for carbon steel in saline water from oil source wells were evaluated using weight loss and electrochemical impedance spectroscopy (EIS) methods. Characterization of the surface morphology was performed by SEM/EDX investigations. The corrosion rate of car...
The aim of this study was to synthesize novel cardanol-based benzoxazines, using different primary amines, and evaluate their influences on the synthesis and polymerization process. The monomers were characterized using NMR (1H and 13C), FT-IR, DSC and TGA. It was demonstrated how the amines structures influence on the stability of the oxazine ring...
This study reports the effect of three new titanium phosphates Li 0.5 M 0.25 Ti 2 (PO 4) 3 (where M = Mn, Co and Ni) on the protective properties of alkyd resin films applied on carbon steel substrate in 3.5% sodium chloride solution. The performance of the coatings was evaluated by electrochemical impedance spectroscopy, oxygen and water permeabil...
New series of pyrido[2,3-d]pyrimidine and 1,8-naphthyridine derivatives were synthesized from 2-amino-6-(phenoxathiin-2-yl)-4-(thiophene-2-yl) nicotinonitrile as starting material, and their structures were characterized on the basis of the spectral data. Most of the synthesized compounds were evaluated for their cytotoxic activity against two canc...
Objectives:
Enamel resin infiltrants are biomaterials able to treat enamel caries at early stages. Nevertheless, they cannot prevent further demineralization of mineral-depleted enamel. Therefore, the aim of this work was to synthesize and incorporate specific hydroxyapatite nanoparticles (HAps) into the resin infiltrant to overcome this issue.
M...
Susceptibility to interact with trifluoroacetic acid (TFA) of selected free-base porphyrins, including a novel lipophilic 3-n-pentadecyl(phenoxy)-ethoxy-phenyl-substituted porphyrin, and photostability of their diprotonated compounds was explored in benzene and N,N-dimethylformamide (DMF). Results have been discussed in terms of the commonly applie...
We have extended our research interest on titanium phosphates M 0.50 Ti 2 (PO 4) 3 , with M = Mg, Mn, Fe, Co, Ni, Cu,) to titanium phosphates Li 0.5 M 0.25 Ti 2 (PO 4) 3 (M= Mn, Co, Ni). Three crystal structures have been determined in rhombohedral system, space group R (N°.167) with a ~ 8.50Å and c ~ 20.95Å.The structures, which are compared to th...
Composite materials prepared by loading polycrystalline TiO2 powders with lipophilic highly branched Cu(II)- and metal-free phthalocyanines or porphyrins, which have been used in the past as photocatalysts for photodegradative processes, have been successfully tested for the efficient photoreduction of carbon dioxide in aqueous suspension affording...
Metal-free, Cu(II)- or Zn(II) tetrakis [4-(2,4-bis-(1,1-dimethylpropyl)phenoxy)]phthalocyanines loaded over TiO2 (anatase) proved to be active in the photoreduction of CO2 to formic acid (HCO2H) in water under UV–vis light. CuPc/TiO2 is catalyst of choice, allowing to reach a maximum yield of HCO2H, unequalled by any other similar catalytic systems...
Changes in membrane fluidity of porphyrin-doped liposomes have been investigated to assess the kinetics of the fluidization process. Metal complexes of tert-butylphenyl meso-substituted porphyrin, containing ions of Mg, Mn, Fe, Co, Ni and Cu, were used as dopants. Liposomes were obtained by sonication of hen egg yolk lecithin (EYL). Electron parama...
In this article, the environmentally friendly preparation of “green nanocarriers” based on the combination of natural renewable materials is described. Cardanol (CA), obtained as the major byproduct of the cashew industry, and cholesterol (CH) have been used to encapsulate chlorogenic acids (CQAs), a class of natural phenolic compounds extracted fr...
Magnetic nanoparticles functionalized with biomolecules have received special attention due to their various biomedical applications, such as drug delivery and magnetic hyperthermia treatment for cancer. In this study, we present the synthesis and characterization of new nanoparticles coated with anacardic acid derived from cashew nut shell liquid....
This paper describes the investigation and development of a novel magnetic drug delivery nanosystem (labeled as MO-20) for cancer therapy. The drug employed was oncocalyxone A (onco A), which was isolated from Auxemma oncocalyx, an endemic Brazilian plant. It has a series of pharmacological properties: antioxidant, cytotoxic, analgesic, anti-inflam...
Dioxiranes are used as reagents in a myriad of synthetically useful oxidations performed in aqueous medium. To extend such an approach also to substrates that are highly hydrophobic, we propose here the use of microemulsions based on the surfactant hexadecyltrimethylammonium hydrogen sulphate (CTAHS) because of its high stability against peroxide s...
The CoFe2O4 and NiFe2O4 nanoparticles were synthesized exploiting a co-precipitation method and afterward calcinated at 400 °C through two different experimental apparatus: a conventional muffle and rotatory oven. X-ray diffraction (XRD) analysis revealed that nanocrystalline ferrites grew with a face center cubic structure (fcc) and Fd3m symmetry...
Samples of manganese–zinc (MnZn) ferrites were successfully prepared by hydrothermal syntheses using different compositions of the reactive system (H2O)1−x
:(EG)x
(x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0), where EG = ethylene glycol. The samples were fully investigated by powder X-ray diffraction, Fourier transform infrared spectroscopy for both liquid...
Magnetic Fe3O4 nanoparticles with average size approximately 11 nm were first oleic acid coated to interact with the meso-porphyrin derivative from CNSL. This procedure produced a novel superparamagnetic fluorescent nanosystem (SFN) linked by van der Waals interactions. This system was characterized by transmission electron microscope, infrared spe...