
Mir Waqas Alam- Phd
- Associate Professor at King Faisal University
Mir Waqas Alam
- Phd
- Associate Professor at King Faisal University
wmir@kfu.edu.sa
About
203
Publications
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Introduction
Working as Assistant professor- King Faisal University Saudi Arabia Since Sept 2015
Current institution
Additional affiliations
September 2015 - September 2020
November 2013 - May 2014
January 2011 - present
Toyama University
Education
September 2010 - September 2013
April 2008 - April 2010
February 2005 - February 2008
Publications
Publications (203)
Green hydrogen is essential for advancing sustainable energy systems and achieving a lowcarbon economy. Various production methods have been developed, each with distinct technological characteristics, efficiency levels, and environmental impacts. Conventional and advanced approaches include water electrolysis such as alkaline electrolysis, proton...
Recent years have seen a significant increase in microplastic contamination across terrestrial ecosystems, facilitated by various pathways such as atmospheric deposition, wastewater irrigation, and agricultural plastic mulching. This persistence of microplastics in soil raises concerns about their profound impacts on soil health and ecosystem dynam...
Developing smart nanocatalysts capable of modulating the reaction rate is one of the recent research domains currently being explored by scientific academia to address wastewater issues. This study the core@shell assembly was developed via two step methodology (chemical reduction of salt for AgNPs synthesis, followed by the emulsion polymerization...
The development of advanced nanocomposites has the potential to greatly enhance the detection of hazardous chemicals in the environment. This research focuses on synthesizing and characterizing Nb2O5/MgO/Fe2O3 nanocomposites to address existing limitations and offer sustainable solutions. The X‐ray diffraction (XRD) study confirms the phase formati...
Proteus mirabilis has been identified as the third most frequent reason for catheter-associated urinary tract infections. The production of urease significantly enhances the force of catheter blockage caused by biofilm formation. Because biofilms are important virulence factors that make antibiotics less potent, it is becoming increasingly importan...
In today's fast-paced technological era, multifaceted technological advancements in our contemporary lifestyle are surging the use of electronic devices, which are significantly piling e-waste and posing environmental concerns. This stock of e-waste is expected to keep rising up to 50 mt year-1. Formal recycling of such humongous waste is a major c...
Non-coding RNAs have gathered significant attention for their unique roles in biological regulation. Across a broad spectrum of developmental processes and diseases, particularly in human malignancies, ncRNAs play pivotal roles in regulatory mechanisms. MicroRNAs, long noncoding RNAs, and small nucleolar RNAs stand out among the diverse forms of nc...
We present an environmentally friendly approach to synthesizing ternary nanocomposite materials with ZrO2/NiO/RGO layers. These materials were extensively studied for their optical, structural, morphological, and energy dispersive X-ray (EDX) properties, as well as their XRD, FTIR, FESEM, Raman, PL, and BET analyses. The findings of scanning electr...
In this study, the synthesis and electrochemical performance of a zinc oxide/copper oxide/graphitic carbon nitride ZnO/CuO/g-C₃N₄ composite for energy storage applications were investigated. The synthesis was carried out using a multi-step process, where ZnO/CuO was prepared via co-precipitation, and g-C₃N₄ was synthesized through thermal polymeriz...
Hydrogen production is a potential capability of renewable clean energy. Industrial hydrogen production is derived from the process of reforming natural gas, which requires a significant amount of nonrenewable energy and also results in the generation of the greenhouse gas carbon dioxide. Water splitting electrolysis is a highly promising method fo...
This chapter explores the impact of green chemistry on material design and synthesis, emphasizing sustainable approaches to nanoscale material fabrication. Nanotechnology, which involves manipulating matter at scales from one to 100 nanometers, presents unique challenges in synthesis that necessitate a deep understanding of fundamental principles t...
This book explores sustainable innovation by delving into advanced materials science and technology. Each chapter reveals the transformative potential of sustainable solutions, from groundbreaking advancements in nanomaterials to eco-friendly manufacturing practices. This book offers a captivating glimpse into the potential future of sustainability...
In this study, the functioning of flexible perovskite solar cells (FPSCs) is examined using drift‐diffusion SCAPS‐1D simulations under ideal conditions. The focus is on the CBz‐PAI interlayer at the perovskite and hole transport layer (HTL) interface and the impact of innovative materials for HTLs, electrons transport layers (ETLs), and transparent...
Herbicides are widely employed in agriculture to manage weeds and enhance crop yields, but their extensive use raises significant environmental and human health concerns. Exposure to herbicides can occur through multiple pathways, including ingesting contaminated food and water, inhaling airborne particles, and dermal contact during application. Th...
The food processing industry, a significant global economic driver, encompasses diverse sectors ranging from agriculture to food service and is currently undergoing transformative changes fueled by engineering innovations, evolving consumer preferences, and regulatory demands. Cutting‐edge advancements in food technology, such as precision agricult...
The majority of fruits and vegetables have a short shelf life after being harvested, and improper handling during transit and storage can further reduce the quality of the final product. Edible films and coatings, one of the primary methods for preserving food, are thin layers composed of edible ingredients that help keep food fresh while being tra...
Ferrite magnetic materials have emerged as capable materials in engineering, research, and medicine because of their exclusive and fascinating properties obtained from a variety of synthesis techniques. These ferrites are significant in commercial products, research, and biomedical applications. Green synthesis methods for ferrite nanocomposites an...
An eco-friendly nitrogen-passivated carbon dot (N-CDs)-based fluorescent sensor was designed for the selective and sensitive detection of thiophanate-methyl, a widely applied fungicide in agriculture. The synthesized N-CDs exhibited robust fluorescence and remarkable photostability, which contributed to the sensor’s performance. Notably, the sensor...
The Nitrogen-doped carbon nanodots (N-CNDs) synthesized using a green method demonstrated a high quantum yield of 16.1%, making them highly effective in anticounterfeiting ink and latent fingerprint visualization under UV light. Structural analysis revealed the presence of abundant nitrogen-containing functional groups on the surface of the N-CNDs,...
For a reliable and risk-free power source, dye-sensitized solar cells (DSSCs) have been the subject of much research. The method is very attractive because of its cheap manufacturing cost, environmentally friendly manufacture, and competitive efficiency. This study constructed a heterojunction as a photoanode for DSSCs using a combination of TiO2 a...
An innovative, eco-friendly method has been developed to synthesize reduced graphene oxide (rGO) sheets using orange peel extract. Following this, TiO2 nanoparticles are anchored to the rGO sheets through a hydrothermal process, resulting in an rGO/TiO2 nanocomposite (GTO/NC). This study utilized standard characterization techniques to confirm the...
In this work, the synthesis of nickel oxide (NiO) using nickel acetate through a green synthetic approach has been reported. The green synthesis approach was employed for the synthesis of NiO nanoparticles as it employs plant-based precursors and mild reaction conditions, reducing environmental impact and avoiding the use of hazardous chemicals whi...
Numerous issues and concerns are associated with current cancer therapeutics, such as multidrug resistance tumors, drug toxicity, severe side effects, and financial burden. Phytocompounds from plants have garnered significant interest as alternatives and adjunct therapies to mitigate these effects owing to their safety, efficacy, and cost‐effective...
WO3/SnO2 heterostructure nanowire array was fabricated using the Glancing angle deposition technique (GLAD), which is a growth-controlled and catalytic-free process. Well-aligned, vertical NWs are observed in the field emission scanning electron microscope image. The X-ray diffraction measurement revealed SnO2 amorphous and WO3 crystalline nature....
This study presents a straightforward hydrothermal method for synthesizing fluorescent nitrogen-doped carbon nanodots (NDCNDs). The Aristolochia bractealata (A. bractealata) extract is utilized as a carbon source, while aqueous ammonia serves as a nitrogen source. An analysis of the optical characteristics of synthesized NDCNDs is conducted utilizi...
Apigenin (APG) is being investigated for its potential in treating different forms of cancer. It can regulate many cellular processes, such as cell proliferation, apoptosis, cell cycle arrest, invasion, metastasis, and autophagy, via controlling multiple cellular signaling pathways. In addition, this chemical demonstrates a significant preference f...
The integration of nanotechnology in agriculture offers a transformative approach to improving crop yields, resource efficiency, and ecological sustainability. This review highlights the application of functional NM, such as nano-formulated agrochemicals, nanosensors, and slow-release fertilizers, which enhance the effectiveness of fertilizers and...
Automation, autonomy, and precision play vital roles in modern technology and procedures, especially in response to the rising global population and the need for improved fruit production technologies. The quality criteria for fruit yield are becoming increasingly complex, necessitating fundamental upgrades. Sensor-based technologies pave the way f...
The fabrication of TiO2/rGO nanocomposites employing mangosteen peel extract as a bioreductor for self-cleaning applications has been successfully conducted. The research reduced graphene oxide (GO) to rGO using mangosteen peel extract as the reducing agent. TiO2 synthesis was carried out via a biosynthesis method using mangosteen peel extract whil...
This study explores the structural, dielectric, ferroelectric, and magnetodielectric (MD) properties of bismuth neodymium titanate ceramics co-doped with Fe and Cr ions (Bi3.15Nd0.85Ti3-x(Crx/2Fex/2)O12; x = 0.0, 0.1, 0.2, 0.3, 0.4). X-ray diffraction (XRD) confirmed phase purity and revealed lattice distortions induced by the Fe/Cr substitution. D...
Organic dyes are a substantial contribution to environmental pollution and are considered as hazardous. These compounds are widely used in various industries like textiles, food, paper, cosmetics, and printing. A cationic dye, such as Fast Blue (FB) and Congo Red (CR), is an example of organic compound with several commercial uses but dangerous for...
Bifacial perovskite solar cells (BFPSCs) represent a promising pathway to enhance power output and reduce payback times for this emerging photovoltaic technology. This study employs computational modeling to explore innovative bifacial architectures utilizing the high-efficiency double-cation perovskite absorber layer (FAP-bI 3) 0.95 (MAPbBr 3) 0.0...
Nanotechnology arising in wide-ranging areas, covers extensively different ranges of approaches attained from fields such as biology, chemistry, physics, and medicine engineering. Nanoparticles are a necessary part of nanotechnology effectually applied in the cure of a number of diseases. Nanoparticles have gained significant importance due to thei...
Energy‐efficient, high‐specificity gas sensors provide practical suitability for stability and response factors. The recognition of ignitable gases (methane (CH <sub>4</sub>), propane (C <sub>3</sub>H <sub>8</sub>), and hydrogen (H <sub>2</sub>) and harmful gases (carbon oxide (CO) and hydrogen sulfide (H <sub>2</sub>S)) in an enclosed and out‐of‐d...
The objective of this study was to synthesize strontium titanate (Sr 1‐x Ce x TiO 3 ) doped with Ce ³⁺ by solid state method. Its crystalline structure is Sr 1‐x Ce x TiO 3 , and its bandgap ranges from ~3.3 to ~2.7 eV. In the photoluminescence of samples excited at 288 nm, the maximum emission of blue light was observed at 380 and 390 nm. Photocat...
In order to meet the demand for portable water and replenish depleting water resources caused by industrialization, urbanization, and population growth; wastewater purification has become crucial. Emerging contaminants (ECs), which include organic dyes, pesticides, pharmaceutical drugs, polyaromatic compounds, heavy metal ions, and fertilizers, amo...
Carbon nanofillers in general and graphene in particular are considered as promising potential candidates in catalysis due to their two‐dimensional (2D) nature, zero bandwidth, single atom thickness with a promising high surface area: volume ratio. Additionally, graphene oxide via result of tunable electrical properties has also been developed as a...
The utilization of nanoformulations derived from natural products for the treatment of many human diseases, including cancer, is a rapidly developing field. Conventional therapies used for cancer treatment have limited efficacy and a greater number of adverse effects. Hence, it is imperative to develop innovative anticancer drugs with superior effe...
Research on preparing material via a greener approach paved the way to produce highly biocompatible nanoparticles for antibacterial and antifungal applications. These nanoparticles showed very good activity on some of the microbial elements; hence, it is used in food industries and food quality control divisions. The preparation of CuO, MgO, and Cu...
Dye-sensitized solar cell (DSSC) technology could become a low-cost solution for solar energy harvesting if the use of expensive dyes and Pt can be avoided. This work reports the development of a novel nanohybrid based on CuCo2S4 nanorods embedded on sheets of reduced graphene oxide (RGO), which can serve as excellent counter electrode for DSSC sho...
High-quality single crystals of magnesium zinc hydrogen phosphate (MgZnHPO4) with diameters of up to 8 × 2 × 2 mm³ have been successfully grown using sodium meta silicate gelatin. The crystal’s classification has been confirmed as orthorhombic, belonging to the Pnma space group, using single crystal X-ray diffraction investigations. Moreover, the c...
The Present work describes green synthesis, eco-friendly, cost-effective and energy-efficient method for synthesizing magnesium zinc ferrite nanoparticles, or AILE@Mn ferrites, utilizing Azadirachta indica leaf extract (AILE). Using X-ray diffraction (XRD) and Rietveld refinement, the AILE-mediated Mn ferrite’s crystal structure was determined to b...
The biogenic synthesis of silver nanoparticles (AgNPs) with leaf extract Abution indicum was done, and those were characterized by ultraviolet–visible spectroscopy (UV–vis), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), powder X‐ray diffraction (PXRD), field emission scanning electron microscopy (FESEM) and transmi...
In this study, biological synthesis of silver nanoparticles (AgNPs) using Senna auriculata flower extract for antibacterial activities was reported. The silver spectra compared to the plant extract show a rightward shift in AgNP peaks, indicating successful nanoparticle formation. The absorption band at 302 nm and the disappearance or shift of othe...
Zinc oxide has been increasingly gaining 28 popularity due to its various multifunctional features and applications in nanotechnology. Zinc oxide nanoparticles (ZnO NPs) are versatile, as these are utilized in multiple areas like gas sensing, biomedical applications, rubber composites, cosmetics formulations, food, and agriculture industry, etc. Zn...
In this study, we report the biosynthesis of Nickel ferrite using Ocimum sanctum leaf extract (OSLE@NiFe 2 O[Formula: see text]. The single-phase cubic spinel structure of the synthesized nickel ferrite was confirmed by powder X-ray diffraction (PXRD) analysis. Structural characteristics were further examined using FTIR analysis. Optical and morpho...
In our study, we synthesize titanium oxide (TiO[Formula: see text] and manganese dioxide (MnO[Formula: see text] using hydrothermal methods, which are TiO 2 -doped MnO 2 nanoparticles. In order to evaluate the essential optical and electronic properties of the proposed nanostructures, X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fou...
Ecosystems and human health are being negatively impacted by the growing problem of electrical waste, especially in developing countries. E-waste poses a significant risk to ecological systems because it can release a variety of hazardous substances into the environment, containing polybrominated diphenyl ethers and heavy metals, brominated flame r...
This work reports the fabrication of a Silicon Oxide (SiOx) thin film (TF) via an electron beam evaporator on an Indium Tin Oxide (ITO) substrate for the application of a non-volatile memory device. The TF exhibits a high transmittance of ~ 79.7% in the visible range. The presence of capacitive memory was analyzed for the frequency range from 500 k...
Utilizing extracts from the Heteropogon contortus plant, Argentum nanoparticles (HC-AgNPs) have been synthesized. The spectral analysis via UV–vis spectroscopy confirmed the presence of Argentum NPs exhibiting a surface plasmon resonance (SPR) peak at 445 nm. HR-TEM unveiled spherical HC-AgNPs spanning a size spectrum of 37.92 nm. Powder X-ray diff...
I am thrilled to announce that Springer Nature has accepted one of my proposals for editing a book titled Breaking Boundaries: Pioneering Sustainable Solutions through Materials and Technology. The agreement has been signed, and the call for chapter proposals is now open. This book aims to explore cutting-edge innovations in materials science and t...
The methanol fruit extract of Piper cubeba was used to create the silver nanoparticles (Ag-NPs). Then, their capacity to stop the growth of two Gram-positive bacteria, Bacillus cereus (6 mm) and Staphylococcus aureus (5 mm), as well as two Gram-negative bacteria, Salmonella typhi (3 mm) and Escherichia coli (5 mm), was tested. Also measured the zon...
The distinctive biological properties exhibited by silver nanoparticles (AgNPs) have propelled this material to the forefront of biological property candidates. Solution-gelation synthesis emerges as a highly promising method among preparation techniques to compensate for the shortcomings inherent in both chemical and physical approaches. The objec...
In this study, silver sulfide nanoparticles (Ag 2 SNP's) were successfully produced by using fruit extracts of Phyllanthus emblica . UV–vis, FTIR, XRD with SEM and EDX techniques were used for the synthesis process and for characterization of the resulting nanostructures. According to the findings, the fabricated nanostructure had a monoclinic crys...
In this study, we synthesize nanostructured nickel oxide (NiO) and doped cobalt (Co) by combining nickel(II) chloride hexahydrate (NiCl 2 .6H 2 O) and sodium hydroxide (NaOH) as initial substances. We analyzed the characteristics of the product nanostructures, including their structure, optical properties, and magnetic properties, using various tec...
The present study describes the environmentally friendly biosynthesis and characterization of silver nanoparticles derived from a medicinal plant in India. The main objective of this investigation was to use green chemistry for producing silver nanoparticles from Cassia auriculata flower extract and their antimicrobial, larvicidal and photocatalyti...
Biodiesel is a renewable alternative to petroleum diesel that is produced through the chemical reaction of oils and fats derived from plants and animals with short-chain alcohols. Widespread interest has been shown in biodiesel as a possible substitute for fuels derived from fossil fuels. Heterogeneous catalysts can provide a more appealing and env...
In this study, electron beam evaporated tungsten oxide (WO3) thin film (TF) has been investigated for both capacitive and resistive switching memory devices. The fabricated samples underwent annealing at a temperature of 500 °C. Capacitance–voltage (C–V) and conductance–voltage were found to decrease with the increase in frequency for both the as-d...
In this present work, synthesize Zinc Oxide Nanobars (ZnO NBs) and Activated carbon (ZnO NBs/AC) nanocomposites using a simple sol–gel technique. The prepared samples were studied with various characterization techniques to determine the structure’s structural, optical, and electrical properties, including X-ray diffraction, UV-visible, HR-SEM, FTI...
Renewable energy from the sun has been a rapidly expanding field in recent years, because to its many advantages as a sustainable, cost-effective, and environmentally friendly power source. Energy drives economic growth and industrialization today. Air heating is a prominent solar energy utilization for space and process heating including washing,...
In this study, the fabrication of titanium dioxide/reduced graphene oxide (TiO2/rGO) utilising banana peel extracts (Musa paradisiaca L.) as a reducing agent for the photoinactivation of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) was explored. The GO synthesis was conducted using a modified Tour method, whereas the production...
The nanocrystalline bismuth oxide (Bi2O3) was produced utilizing a green combustion process with Mexican Mint gel as the fuel. The powder X-ray diffraction (PXRD) method proved the nanocrystalline nature and Bi2O3 nanoparticles (BONPs) in α phase and the average crystalline size of BONPs nanoparticles has been found to be 60 nm. The spherical-shape...
In this study, a novel process for synthesizing ZnO nanoparticles using a non-thermal plasma source generated by the Gliding Arc Discharge (GAD) system is presented. The physicochemical properties of the synthesized nanoparticles were characterized using diverse techniques such as scanning electron microscopy (SEM), energy dispersive X-ray analysis...
Electrochemical detection of dopamine is crucial in the early stages of Parkinson’s and Alzheimer’s disease diagnosis. In this paper, we have developed modified electrodes based on molybdenum oxide (MoO3) grown on graphite sheet (GS), which was investigated for its ability to detect dopamine sensitively and selectively. The MoO3/GS electrodes were...
A self-powered photodetector based on copper oxide thin film (Cu2O-TF) is deposited using the e-beam evaporation technique. One notable advantage of this fabrication process is that it does not require the use of any catalysts. The XRD analysis revealed the presence of cuprous oxide (Cu2O) with a distinct peak at ~ 42.66º indicating (200) orientati...
The deposition of a Ta2O5 thin film (TF) onto n-Si substrates was carried out using a conventional electron beam evaporation method. The amorphous structural nature of the Ta2O5 TF was confirmed through XRD analysis, and a growth of approximately 100 nm was observed through cross-sectional FESEM analysis. Electrical analysis of the Ta2O5 TF device...
In this study, we investigated the influence of hole-transport layer thickness (0, 5, 10, 15, 20, 25, 30, 35 and 40 nm), N,N′-bis(naphthalen-1-yl)-N,N′-bis(phenyl)-2,2′-dimethylbenzidine (α-NPD) on the performance of thermally evaporated multilayer organic light-emitting diodes (OLEDs) with tris(8-hydroxy-quinolinato)aluminium (Alq3) as electrolumi...
The continuous and irresponsible addition of environmental pollutants into aqueous reservoirs due to excessive industrialization is a significant contemporary challenge. Nanomaterial-based catalytic reduction provides an effective way to convert these materials into environmentally useful products. Responsive polymeric assemblies, complemented with...
In this study, ZnO thin films were prepared with different precursors using the spray pyrolysis technique, zinc acetate (ZAC-0.2), zinc chloride (ZCL-0.2), and dehydrated zinc nitrate (ZNH-0.2) precursors. The formation of ZnO thin films was confirmed using a variety of characterization techniques, including UV–vis spectroscopy, Fourier-transform i...
A series of MgAl2O4: Sm3+ nanophosphors were synthesized using oxalyl dihydrazide (ODH) as fuel at low temperature. The X-ray diffraction studies revealed a crystallite size of 20 nm for the nanophosphors. The energy band gap values were found to be in the range from 4.86 to 5.42 eV. Because of distinct f–f transitions from 4F7/2 ⟶ 6P3/2 of Sm3+ io...
Photodetectors based on one-dimensional structures have recently attracted great interest due to their high surface-to-volume ratio and light-trapping efficiency. In this study, a self-powered photodetector based on vertically aligned WO3 nanorod with SiO2 as an interfacial layer has been fabricated using glancing angle deposition. Scanning electro...
Organic pollutants in water have been a challenge and pose significant risks to human health. As a result, research efforts to eliminate these pollutants have been on the rise. Photocatalysis has shown incredible potential in water treatment containing organic pollutants since it is affordable and utilizes solar energy. Tin oxide ( ) has ardently b...
Questions
Questions (14)
We have a Keithley 4200 Semiconductor characterization system and some of the probes are broken and need replacement. The previous probe station was purchased from Jmicro technology and unfortunately, the company is not active at this moment.
Kindly check the attached pictures for the probes and suggest to me any supplier for these probes.
Thanks
Dear All
I am looking for new organic semiconductor materials that are currently researched for organic thin-film transistor applications and can be thermally evaporated or spin-coated.
Kindly send me the detailed material with company names.
I am looking for a textbook for the Course entitled (Physics self-learning) for a Masters in Physics. Please let me know if you have any textbook or you know any university link that have this course for master students
Unfortunately the sputtering system in my department is down and I need to prepare some thin films of Titanium oxide , Copper oxide and tungsten oxide. if any one can collaborate in this regard kindly contact me as soon as possible.
I was using metal boats like Tungsten/Tantalum/Molybdenum for evaporating gold or any organic/inorganic materials . I checked online Ceramic evaporation boats are also available in market. any one have experience using these boats for evaporating organic material or inorganic materials? up-to how much maximum melting temp we can evaporate with ceramic boats? Like TiO2 have very high melting temp.
Currently I am working on some new organic molecules and I am getting the 3D island morphology.
My deposition conditions are as written below.
Substrate: Silicion with thermally grown SiO2
Cleaning. acetone , ethanol. pure water, OZ treatment.
Organic molecules deposition. Rate; 2A/1min. Subtrate temp Room temp-60C.
I checked the morphology by AFM images
My target is to get the 2D amorphous morphology.
I changed temp from RT- 60degre but still same morphology.
What are the other possible things I need to do?