Adeel Afzal

Adeel Afzal
University of Hafr Al Batin; King Fahd University of Petroleum and Minerals; University of the Punjab

PhD (Austria), Postdoc (Italy)
Fellow of the Royal Society of Chemistry; Professor of General & Inorganic Chemistry

About

82
Publications
20,712
Reads
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2,240
Citations
Additional affiliations
September 2016 - October 2020
King Fahd University of Petroleum and Minerals
Position
  • Professor (Associate)
August 2010 - February 2012
Università degli Studi di Bari Aldo Moro
Position
  • PostDoc Position
Education
February 2005 - December 2007
University of Vienna
Field of study
  • Analytical/Applied Chemistry
September 2002 - August 2004
Quaid-i-Azam University
Field of study
  • Organic/Polymer Chemistry
September 2000 - August 2002
Quaid-i-Azam University
Field of study
  • Organic Chemistry

Publications

Publications (82)
Article
Development of layered nanostructures with distinct morphology has become an avenue of recent research to engineer targeted properties, especially for electrochemical devices. However, their remarkable characteristics are yet to be exploited for biological applications. In this work, we followed a facile and single-step method and prepared the solu...
Article
The elevated level of very-low-density lipoprotein (VLDL) in the blood is associated with coronary heart disease; therefore, its detection is of significant clinical importance. In this work, molecularly imprinted polymer (MIP) layers fabricated with ZnO nanoparticles are developed for gravimetric sensing of VLDL. The use of methacrylic acid (MAA)...
Article
Herein, an easy co-precipitation method was adopted to fabricate Al-doped ZnO nanoflakes as a photocatalyst to remove noxious organic dye from industrial waste. The silica (SiO 2) additive, owing to its network structure and excessive hydroxyl groups (Si-OH), has a great potential to capture dye molecules in its porous network. Application studies...
Article
Reduced graphene oxide (rGO)-based rare-earth-doped metal oxide nanocomposites have shown exceptional photocatalytic efficiency for water splitting and remediation. In this study, we used a simple wet chemical technique to create gadolinium (Gd) doped bismuth ferrite (BiFeO 3) nanoparticles, which we then grafted onto an rGO using an ultrasonicatio...
Article
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The emergence of a pandemic scale respiratory illness (COVID-19: coronavirus disease 2019) and the lack of the world's readiness to prevent its spread resulted in an unprecedented rise of biomedical diagnostic industries, as they took lead to provide efficient diagnostic solutions for COVID-19. However, these circumstances also led to numerous emer...
Article
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Herein, vermiculite clay is used as a reinforcement for epoxy resin, which is pretreated with HCl and functionalized with an organosilane. The functional vermiculite nanoparticles (0–10 mass %) are embedded into epoxy resin, and the mixture is subsequently cured with a diamine to yield highly crosslinked vermiculite-epoxy nanocomposites. These nano...
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Molybdenum (Mo) impregnated g-C3N4 (Mo-CN) nanotubes are fabricated via a thermal/hydrothermal process to augment photoelectrochemical properties during solar-driven water-splitting (SDWS) reactions. Graphitic-C3N4 is an attractive material for photocatalysis because of its suitable band energy, high thermal and chemical stability. The FE-SEM and H...
Article
α 1-Acid glycoprotein (α 1-AGp) is a critical plasma protein that acts as a biomarker for different diseases when produced in large amounts (>1.2 mg ml-1). Therefore, selective, label-free, and fast detection of α 1-AGp in human serum is essential. This article presents the development of selective coatings based on molecularly imprinted polymer (M...
Article
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Titanium(IV) oxide (TiO 2 , titania) is well-known for its excellent photocatalytic properties, wide bandgap, chemical resistance, and photostability. Nanostructured TiO 2 is extensively utilized in various electronic and energy-related applications such as resistive switching memory devices, flat panel displays, photodiodes, solar water-splitting,...
Article
Herein, we report the fabrication of NiO-CoO films for the electrochemical detection of hydrazine. An electrochemical sensor was devised where aerosol assisted chemical vapor deposition (AACVD) was employed as a nifty method for synthesizing NiO-CoO films over FTO electrodes. NiO-CoO-nanoparticle (NP) and NiO-CoO-nanowall (NW) films were fabricated...
Article
Earth-abundant, non-precious metal-based bifunctional electrocatalysts with efficient water splitting activity are of valuable importance in the limitation of energy losses in an alkaline environment. Herein, we report NiCo–NiCoO2 nano-heterostructures embedded on the oxidized surface of copper foam (NiCo–NiCoO2@Cu2[email protected]) as an efficien...
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The review presents a short background of the investigated techniques carried out on TiO2-based epoxy nanocomposites. TiO2 is one of the best nanofillers for polymers due to its aspect ratio and high intercalation chemistry. The addition of reinforcement to the matrix material generally enhances their physical properties through the interaction of...
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Nanocrystalline copper ferrite shows distinct photocatalytic properties, but it suffers from a high recombination rate of photogenerated electrons (e⁻) and holes (h⁺) due to its narrow bandgap. Herein, Al³⁺ doping is shown to reduce the (e⁻/h⁺) recombination rate and improve the charge carriers’ availability in doped CuFe2−xAlxO4 (0 ≤ x ≤ 1) nanopa...
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Fabrication of gas sensors to monitor toxic exhaust gases at high working temperatures is a challenging task due to the low sensitivity and narrow long-term stability of the devices under harsh conditions. Herein, the fabrication of a chemiresistor-type gas sensor is reported for the detection of NO2 gas at 600 °C. The sensing element consists of Z...
Article
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Monitoring antimalarial drugs is necessary for clinical assays, human health, and routine quality control practices in pharmaceutical industries. Herein, we present the development of sensor coatings based on molecularly imprinted polymers (MIPs) combined with quartz crystal microbalance (QCM) for sensitive and selective gravimetric detection of an...
Article
Epoxy-based protective coatings for outdoor and marine applications are commonly used to protect metals and alloys, and architectural elements against the environmental impact. An epoxy-co-polyamide (EP-PA) polymer is synthesized by reacting pre-polymers: epoxy and polyamide resins. TiO2 nanoparticles of different sizes are embedded into EP-PA copo...
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Heterogeneous Ni0.5Cu0.5−xZnxFe2O4 (0.0 ≤ x ≤ 0.5) nanoparticles are prepared via a green, solventless and additive-free, soft mechanochemical process at room temperature. This solid-state synthetic procedure yields ternary and quaternary oxide nanoparticles with uniform morphology (average particle size: 104–136 nm). X-ray diffraction analyses of...
Article
Electrocatalytic water splitting is one of the most favorable methods for industrial-scale hydrogen production, but high cost and scarcity of commercially available noble metals restrict its application for hydrogen evolution reaction (HER). It is challenging to develop efficient non-noble metal-based electrocatalysts for HER. Herein, a Ni–Cr was d...
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High permittivity and breakdown strength are desired to improve the energy storage density of dielectric materials based on reinforced polymer composites. This article presents the synthesis of polythiophene-encapsulated BaTiO 3 (BTO-PTh) nanoparticles via an in situ Cu(II)-catalyzed chemical oxidative polymerization of thiophene monomer on hydroth...
Article
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Background: To curb the spread of the COVID-19 (coronavirus disease 2019) pandemic, the world needs diagnostic systems capable of rapid detection and quantification of the novel coronavirus (SARS-CoV-2). Many biomedical companies are rising to the challenge and developing COVID-19 diagnostics. In the last few months, some of these diagnostics have...
Article
The ultra-deep desulfurization of crude oil to produce cleaner transportation fuels is essential for environmental protection. In this study, we present the development of molecularly imprinted poly(methyl methacrylate) (MIP)-based affinity membranes for adsorptive desulfurization of fuels. Hydrothermally-prepared nickel sulfide (NiS) nanoparticles...
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Acoustic devices have found wide applications in chemical and biosensing fields owing to their high sensitivity, ruggedness, miniaturized design and integration ability with on-field electronic systems. One of the potential advantages of using these devices are their label-free detection mechanism since mass is the fundamental property of any targe...
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The reliable, selective, and fast detection of the inorganic and organic gases in indoor and outdoor air and industrial processes is a huge challenge for environmental sustainability, healthier life, and disease control and diagnosis. Metal oxides have been frequently explored as highly sensitive receptor elements in the electronic gas sensors sinc...
Article
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Polymer particulate composites (PPC) are extensively used in numerous mechanical and aviation applications, which take advantage of their synergistic properties such as superior yield strength. This work combines experimental and theoretical approaches to evaluate yield strength of thermosetting PPC made of pristine p-TiO2 or surface-grafted g-TiO2...
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Biomimetic hybrid particles based on amlodipine-imprinted poly(methacrylic acid-co-ethylene glycol dimethacrylate) (MIP) are developed by free radical polymerization of the monomers and crosslinkers in the presence of silica nanoparticles. Atomic force microscopy is used to study the distribution and surface morphology of MIP-silica hybrid particle...
Article
A simple wet-chemical procedure is reported for synthesis and subsequent functionalization of spinel ZnFe 2 O 4 nanomaterials for sensitive electrical detection of ethanol. ZnFe 2 O 4 nanoparticles are produced by triethylene glycol-mediated coprecipitation of ZnSO 4 and FeSO 4 sols in aqueous ammonia. The mechanism for synthesis is described. As-p...
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Gasoline–ethanol (gasohol) fuel blends have gained considerable attention in the petroleum and energy sectors as relatively cheaper and greener high-octane alternative fuels with gasoline-comparable efficiency in modern transportation vehicles. However, due to different combustion rates the relative concentration of ethanol in gasohol fuel blends m...
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The oxides of transition, post-transition and rare-earth metals have a long history of robust and fast responsive recognition elements for electronic, optical, and gravimetric devices. A wide range of applications successfully utilized pristine or doped metal oxides and polymer-oxide hybrids as nanostructured recognition elements for the detection...
Article
The supercapacitors are advanced electrochemical energy storage devices having characteristics such as high storage capacity, rapid delivery of charge, and long cycle life. Polypyrrole (PPy) – an electronically conducting polymer, and carbon nanotubes (CNT) with high surface area and exceptional electrical and mechanical properties are among the mo...
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Viruses are pathogenic microorganisms that can inhabit and replicate in human bodies causing a number of widespread infectious diseases such as influenza, gastroenteritis, hepatitis, meningitis, pneumonia, acquired immune deficiency syndrome (AIDS) etc. A majority of these viral diseases are contagious and can spread from infected to healthy human...
Article
The development of synthetic materials for bioanalogous detection of different analytes is made simple by molecular imprinting. However, improving the ultimate performance of imprinted sensing devices for real-world applications is yet desirable. In this work, biomimetic coatings are designed for quartz crystal microbalance (QCM) based mass-sensiti...
Article
In this study, new molecularly imprinted polymer nanoparticles are designed for selective recognition of different drugs used for the treatment of type 2 diabetes mellitus, i.e. sitagliptin and metformin. The sitagliptin- and metformin-imprinted polymer nanoparticles are synthesized by free-radical initiated polymerization of the functional monomer...
Article
The structural and morphological features influencing the glass transition temperature of epoxy/silica nanohybrid and nanocomposite materials containing 25–30 phr of nanoscale silica phases are discussed in this letter to answer the questions related to the processing–structure–property relationships. X-ray photoelectron spectroscopy and atomic for...
Article
Automobile exhaust gas emissions are causing serious damage to urban air quality in and around major cities of the world, which demands continuous monitoring of exhaust emissions. The chief components of automobile exhaust include carbon monoxide (CO), nitrogen oxides (NOx), and hydrocarbons. Indium zirconate (InZrOx) and gold/indium zirconate (Au/...
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This article presents an (hydroxypropyl)methylcellulose (HPMC) mediated synthesis of highly porous scaffolds containing nanocrystalline hydroxyapatite (n-HAp) and chitosan (CS) as major inorganic and organic phases, respectively. A mixture of n-HAp, CS, and HPMC is homogenized and freeze-dried to yield n-HAp/CS/HPMC composite scaffolds closely emul...
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Gold nanoparticles stabilized on metal oxide supports have found a wide range of applications especially in heterogeneous catalysis and gas sensing. A facile methodology for the in situ electrodecoration of gold nanoparticles on metal oxide supports is presented herein. Metal oxides such as indium oxide (In2O3) and zirconia (ZrO2) nanoparticles are...
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The design of gas-phase molecular recognition elements capable of detecting sub-ppm level indoor air pollutants, e.g. formaldehyde at room temperature with substantially low cross-sensitivity and fast response and recovery kinetics is a challenge. In an effort to realize such a device, low-temperature formaldehyde imprinting and layer-by-layer asse...
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The synthesis of ZnO nanostructures via co-precipitation of Zn(NO3)2·2H2O in 2-aminoethanol under different reaction conditions is presented. The effect of temperature and time on crystal structure, size, morphology, and optical properties of ZnO nanopowders is studied. XRD analyses demonstrate that single crystalline wurtzite ZnO nanostructures ar...
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Molecularly imprinted titania nanoparticles are su ccessfully synthesized by sol–gel method for the selective recognition of uric acid. Atomic force microscopy is used to study the morphology of uric acid imprinted titania nanoparticles with diameter in the range of 100–150 nm. Scanning electron microscopy images of thick titania layer indicate the...
Article
Gold (Au) nanoparticles stabilized on metal oxide supports offer superior catalytic activity and recyclability in organic catalysis. We report for the first time synthesis of indium oxide stabilized gold (Au@In2O3) nanocatalysts using an electrochemical procedure and their application in homocoupling of arylboronic acids. In2O3 nanoparticles prepar...
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Inorganic particulate reinforcements for organic epoxy resins and polymers attracted intense exploratory research in recent years to better the performance of existing composite materials and to devise new compositions of high performing materials. This work is aimed at investigating the role of crystalline and functional TiO2 nanoparticles in enha...
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Bone tissue engineering applies scientific principles to repair, regenerate, and restore the functions of defected hard tissues or to replace them with purposely built biomaterials. In the past few decades, the design, construction and modification of biomaterials possessing desirable properties—those mimicking natural bone—remained the center of a...
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This paper presents the synthesis and thermal and mechanical properties of epoxy-titania composites. First, submicron titania particles are prepared via surfactant-free sol-gel method using TiCl4 as precursor. These particles are subsequently used as inorganic fillers (or reinforcement) for thermally cured epoxy polymers. Epoxy-titania composites a...
Article
Imprinting is a well-established technique to induce recognition features in both organic and inorganic materials for a variety of target analytes. In this study, ion imprinted polysiloxanes with varying percentage of coupling agent i.e. 3-chloro propyl trimethoxy silane (CPTM) were synthesized by sol-gel method for imprinting of Cr3+. The imprinti...
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Molecular imprinting is a well-established technology to mimic antibody-antigen interaction in a synthetic platform. Molecularly imprinted polymers and nanomaterials usually possess outstanding recognition capabilities. Imprinted nanostructured materials are characterized by their small sizes, large reactive surface area and, most importantly, with...
Article
Detection of organic vapors is a lasting challenge. There is a growing concern over possible health effects of long-term exposure to organic vapors in house as well as workplace environments. In this paper, we report a successful strategy for the detection of toxic organic vapors, e.g., ethyl acetate. Quartz crystal microbalance (QCM)-based sensors...
Article
The necessity of selectively detecting various organic vapors is primitive not only with respect to regular environmental and industrial hazard monitoring, but also in detecting explosives to combat terrorism and for defense applications. Today, the huge arsenal of micro-sensors has revolutionized the traditional methods of analysis by, e.g. replac...
Article
In this letter, we present a facile route to produce metastable tetragonal zirconia (ZrO2) nanoparticles via pH-controlled precipitation of dilute zirconyl nitrate dihydrate [ZrO(NO3)2�2H2O] solution in liquid NH3 under ambient conditions and calcination at 500 �C for 2 h. The phase pure tetragonal ZrO2 nanoparticles are obtained at pH 9. The effec...
Article
Imprinting is a straightforward, yet a reliable technique to develop dynamic artificial recognition materials - so called as synthetic antibodies. Surface imprinting strategies such as soft lithography allow biological stereotyping of polymers and sol-gel phases to prepare extremely selective receptor layers, which can be combined with suitable tra...
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Bisphenol A diglycidylether (DGEBA) based low viscosity, liquid epoxy resins are widely used as basis for advanced polymers and nanocomposites, adhesives, protective coatings and encapsulation. We present “green” synthesis of nano-SiO2/epoxy polymer hybrids by a two-step chronological polymerization of inorganic and organic monomers without the use...
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Synthesis, characterization and thermal properties of some rigid epoxy polymers cured from aromatic mono- and di-amine are presented. The aromatic mono- and di-amine are prepared via nucleophilic substitution reaction of p-nitrochlorobenzene with the respective mono- and di-hydroxybiphenyl, and via subsequent hydrogenation of the aromatic nitro pro...
Article
Thermal properties of the organic–inorganic bicontinuous nanocomposites prepared via in situ two-stage polymerization of various silanes, epoxy, and amine monomers are investigated, and the impact of filler content and its organic compatibility on thermal stability of these nanocomposites is studied. Two series of epoxy–silica nanocomposites, namel...
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Silica packed epoxy networks are prepared in two steps via in situ, solvent free sol–gel processing of tetraethoxysilane in liquid epoxy monomer and curing the mixture with a flexible diamine afterwards. The influence of filler content and processing conditions on the mechanical properties and the fracture behavior is studied by means of the static...
Article
21st century has already seen huge progress in science and technology of small, highly sensitive gas sensors, which can selectively detect environmental toxins like NOx – the oxides of nitrogen – a byproduct of fossil fuel combustion. Into this bargain, public became more health-aware and environmental bodies grew stricter, stimulating analytical a...
Article
Synthesis of structurally modified poly(vinyl alcohol) (PVA) ionic composites is presented. Low-molecular-weight PVA (Mn = 18,000 g mol-1) is prepared and blended together with either copper or borate ions under ambient conditions to yield PVACu and PVAB ionic composites, respectively. The borate ions coalesce together with different polymeric chai...