Wan Jefrey Basirun

Wan Jefrey Basirun
University of Malaya | UM · Department of Chemistry

PhD

About

351
Publications
69,334
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6,281
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Introduction
Wan Jeffrey Basirun currently works at the Department of Chemistry, University of Malaya. Wan does research in Materials Chemistry and Nanotechnology. Their current project is 'Nanocarbons and Metal-Oxide nanostructures for various applications such as solar-cells, electrochemical sensors and photocatalyst and cytotoxicity.'
Additional affiliations
June 1997 - present
University of Malaya
Position
  • Academic
September 1993 - March 1997
University of Southampton
Position
  • Postgraduate

Publications

Publications (351)
Article
This comprehensive review summarizes recent advances in the synthesis and coordination chemistry of dibenzotetraaza[14]annulenes (DBTAAs) reported between 2010 and 2021. Owing to the smaller N4 donor cavity compared to that of the porphyrin core, it is not surprising that DBTAA offers versatile and unique coordination modes towards metal ions. The...
Article
Various filling fractions of silver silica nanocomposites (Ag-SiO 2 NC) were successfully synthesized via sol-gel technique and deposited onto indium tin oxide via electrophoretic deposition (EPD). Ag-SiO 2 NC was investigated using X-ray diffraction, FTIR spectroscopy, Uv-vis and transmission electron microscopy. The XRD and Uv-vis results reveale...
Article
Numerous studies on Cu-doped ZnO (CZO) thin film doped as a p-type material have been reported due to its applications in optoelectronic and gas sensing devices. The synthesis and fabrication of CZO thin films by various techniques have been reported, but the sol-gel technique for both spin and dip coating has attracted much attention due to its sa...
Article
Full-text available
For effective cutting tool inserts that absorb thermal shock at varying temperature gradients, improved thermal conductivity and toughness are required. In addition, parameters such as the coefficient of thermal expansion must be kept within a reasonable range. This work presents a novel material design framework based on a multi-scale modeling app...
Article
This study reports the immobilization of Candida Rugosa lipase (CRL) onto nanocellulose (NC) extracted from almond shells using p-toluenesulfonic acid (PTSA) and sulfuric acid (ASS) with sugar-based natural deep eutectic solvent (NADES1a) as a biocatalyst system. The properties of both immobilized lipases were studied and compared to the free enzym...
Article
Nanoparticles (NPs) synthesized by the co-precipitation technique show many attractive properties such as small particle size, high crystallinity, high average pore diameter and high specific surface area. However, numerous reports show that some characteristics of the Ni-doped ZnO (NZO) NPs remain controversial such as optical bandgap (Eg), surfac...
Article
Fatty Acid Methyl Ester (FAME) produced from biomass offers several advantages such as renewability and sustainability. The typical production process of FAME is accompanied by various impurities such as alcohol, soap, glycerol, and the spent catalyst. Therefore, the most challenging part of the FAME production is the purification process. In this...
Chapter
Biomaterials are traditionally defined as “materials which could be interfaced with biological systems to evaluate, treat, augment, or replace tissues, organs, or functions of the body”. These biomaterials have a wide range of applications such as dentures, artificial arteries, contact lenses, joints and limbs substitutes, and artificial skin. With...
Article
In the present work, a highly selective and metal-free electrochemical sensor was fabricated from the fusion of nanocellulose and polypyrrole (NNC-PPY), incorporated with single-walled carbon nanotubes (SWCNTs) via drop-casting method for the simultaneous determination of paracetamol (PCM) and ciprofloxacin (CPR). The screen printed electrode (SPE)...
Article
An innovative electrochemical sensing platform was fabricated for the simultaneous determination of paracetamol (PCT) and naproxen sodium (NPX). The glassy carbon electrode (GCE) was modified with a hybrid porous nanocomposite of carboxylated nanocellulose (CNCS), nitrogen doped graphene (NDG) and an anionic surfactant sodium dodecyl sulfate (SDS)...
Article
Recently, much attention has been focused on nickel (Ni) as current collectors for supercapacitor applications. The cleaning of Ni current collector is mandatory before it can be utilized in supercapacitor devices. The cleaning of the Ni foam substrate is essential for removing contaminations and modifying the surface morphology of the foam. In thi...
Article
Employing low quality feedstocks for biodiesel production can present cost reduction opportunities due to its wide availability and cost effectiveness. However, most low quality feedstocks have high free fatty acid (FFA) content which is not feasible for biodiesel production through direct transesterification due to soap formation. Thus, a pre-trea...
Article
Many precautionary elements are associated with food safety, including the elimination or reduction of contaminants below tolerable daily intake (TDI). However, efforts so far have yet to provide a long-term sustainable solution. In this study, the use of COSMO-RS was employed to screen 53 potential solvents for the sustainable extraction of 3-MCPD...
Chapter
Deep eutectic solvents (DESs) are considered as relativity green solvents in comparison with ionic liquids and organic solvents. DESs are used in nanotechnology applications due to their unique physiochemical properties, efficient dispersants and they can be easily prepared in high purity at low cost. Other advantages include their nontoxicity, no...
Article
Full-text available
Hydroxyapatite (HA) exhibits several desirable characteristics, but it still lacks osteoinduction, which is a necessary requirement for a bone scaffold. HA-based composites with different amounts of Bioglass ® (BG) were prepared using spark plasma sintering (SPS). Careful selection of the SPS parameters avoided undesirable reactions between the cal...
Article
Full-text available
In this research, the growth of bioglass (BG) (45S5) incorporated oxide layer via plasma electrolytic oxidation (PEO) method was studied with respect to different sodium hydroxide (NaOH) concentrations (0.1, 0.3, 0.5, and 0.7 M). The voltage response during the deposition process was highly dependent on the electrolyte concentration. Large sparks w...
Article
Low grade crude palm oil (LGCPO) presents as an attractive option as feedstock for biodiesel production due to its low cost and non-competition with food resources. Typically, LGCPO contains high contents of free fatty acids (FFA), rendering it impossible in direct trans-esterification processes due to the saponification reaction. Esterification is...
Article
Full-text available
The miniaturization of electronic devices and the consequent decrease in the distance between conductive lines have increased the risk of short circuit failure due to electrochemical migration (ECM). The presence of ionic contaminants affects the ECM process. This work systematically investigates the ECM of tin (Sn) in the presence of bromide ions...
Article
Development of a facile, fast, sensitive and multiplex DNA detection for the quantitative verification of food adulterant is of high significance these days. RT-PCR, and nanoparticle based fluorescence and electrochemical detection techniques have been successfully used in clinical medicine. However, requirements of pre-conditioning steps and fluor...
Article
Full-text available
A facile synthesis of fused nitrogen tricyclic based pyrimido[1,2- b ]indazoles featuring indolenines is presented.
Article
Full-text available
Authentication, detection and quantification of ingredients, and adulterants in food, meat, and meat products are of high importance these days. The conventional techniques for the detection of meat species based on lipid, protein and DNA biomarkers are facing challenges due to the poor selectivity, sensitivity and unsuitability for processed food...
Article
This work presents a review of nanocomposites of nickel oxides (NiO, nickel cobaltite NiCo2O4), nickel hydroxides (Ni(OH)2), layered-double hydroxides of Ni (LDH-Ni) with graphene, functionalized-graphene (graphene oxide and reduced graphene oxide), doped-graphene (nitrogen doped and boron doped graphene) as hybrid supercapattery materials. The syn...
Article
The type of intermetallic precipitates and their distribution during the friction stir welding (FSW) have significant effects on the microstructure and mechanical performance. Therefore, the present study aimed to investigate the type and volume fraction of grain boundaries in different zones of the FSW-ed AA6061-T6 alloys and their impacts on the...
Article
Tissue degeneration due to diseases, accidents, and wars is a worldwide issue. One of the methods used by regenerative medicine (RM) to aid tissue repair is by using a biodegradable tissue engineering scaffold (TES). Different body tissues have variable regeneration abilities, and hence, they require TES with variable degradation rates. This paper...
Article
Full-text available
A ternary photocatalyst of PANI–TiO2–Fe3O4 with nanorod structure was successfully fabricated by a simple one-pot method via chemical oxidative polymerization using ammonium persulfate as an oxidant under acidic medium. The PANI–TiO2–Fe3O4 (10%) possesses the lowest band gap of 1.50 eV due to the synergistic effect amongst PANI, TiO2, and Fe3O4. Th...
Article
This paper reports the synthesis of Polyaniline nanocomposites (PANI NCs) in the presence of graphene oxide (GO) and Zn-doped TiO2 nanoparticles by an in situ chemical polymerization method. The structure and morphology of the nanocomposites were analyzed by X-ray diffraction, Fourier transformed infrared spectroscopy, energy-dispersive X-ray analy...
Article
The present study investigates deep eutectic solvents (DESs) as potential media for enzymatic hydrolysis. A series of ternary ammonium and phosphonium-based DESs were prepared at different molar ratios by mixing with aqueous glycerol (85%). The physicochemical properties including surface tension, conductivity, density, and viscosity were measured...
Article
Suppressing the nucleophilic susceptibility of ionic liquids based nanofluid is necessary for energy storage and superoxide ion (O2●−) utilization. This study reports the development of novel pseudocapacitive Fe/Ru-SiMWCNT nanofluid comprising Fe3O4, RuO2, SiO2, and MWCNT hybridized phases. The Fe/Ru-SiMWCNT nanohybrid possessed CO2 and O2 sorption...
Article
This work reports a biosensor based on tri-metallic organic framework (MOF) for the determination of an anticancer therapeutic agent, nilutamide (NLM). The tri-metallic Co-Ni-Cu-MOF and the single metal MOFs Co-MOF, Ni-MOF and Cu-MOF were grown onto nickel foam (NF) substrate by a solvothermal method. The crystal, chemical structure, morphology and...
Article
The extraction of cellulose from almond shell powders was carried out using three different particle sizes (125 µm, 250 µm, and 500 µm) of the powders. The powder samples were subjected to Soxhlet extraction using an ethanol and methanol volume ratio of 2:1 for 6 hours to remove impurities such as waxes, resins, and dust. The dewaxed product was fu...
Article
An ultrasonic-assisted preparation strategy was employed to synthesize in-situ hydroxyapatite-reduced graphene oxide nanocomposite (n-HA/rGO) as a potential biomaterial for bone regeneration under the osteoporotic condition. The results of Rietveld refinement indicated that the optimum crystallite size was 20.26 ± 0.52 nm following the ultrasonicat...
Article
Full-text available
Degradation of amines is a significant issue allied to amine-based carbon dioxide (CO2) absorption in post-combustion CO2 capture. It becomes essential to have a detailed understanding of degradation products for advanced post-combustion CO2 capture technology. Identification and quantification of degradation products of amines help in practicabili...
Article
Plasmonic nanostructured silver silica at an optimum volume ratio of silver silica and constant concentration of silver nanoparticles (AgNPs) was successfully synthesized by the sol-gel technique for surface-enhanced Raman scattering (SERS) application. Transmission electron microscopy (TEM) images confirm that the optimum ratio of the nanostructur...
Article
The hydrothermal method has been used to prepare Ni(OH)2 photocathode. The photoelectrochemical (PEC) reduction of CO2 over Ni(OH)2 has been conducted in 0.2 M LiClO4 in aqueous and N,N-dimethylformamide (DMF) medium under visible light irradiation. The thin film was characterized by XRD, UV–Vis, FTIR, FESEM-EDX, BET analysis, and electrochemical m...
Chapter
Nanocellulose is an emerging biopolymer which has seen wide applications in biomedical and materials engineering. This book chapter presents the advances of nanocellulose in electrochemical applications which begins with the structural characteristics, physicochemical properties and methods of extraction of nanocellulose from biomass. The electroni...
Chapter
Manganese oxide graphene nanocomposites (G-MnOx) as advanced supercapacitors are described in this work. The synergistic combination of a pseudocapacitor (PC) such as manganese oxide and an electrochemical double layer capacitor (EDLC) such as graphene, functionalized graphene and doped graphene into a nanocomposite yields higher power density and...
Article
A series of indolenine and barbituric acid zwitterion scaffolds were synthesized with a maximum yield of 98% via the formation of C–C single bond. The structures were unambiguously elucidated by various spectroscopic techniques such as 1H, 13C NMR (1D, 2D), FT-IR and high-resolution mass spectrometry (HRMS). Single crystal X-ray crystallography ana...
Article
Full-text available
We report the synthesis and characterization of polyaniline microtubes /Pt reduced N-graphene oxide (PAn MTs Pt N-rGO) nanocomposites in the presence of L-glutamine as a green reducing agent for the detection of mercury ions. Field emission scanning electron microscopy (FESEM) confirmed the presence of N-rGO, Pt NPs and PAn MTs while X-ray diffract...
Article
Full-text available
Herein, we report the synthesis of SnO, Cu₂O and SnO-Cu₂O mixed oxide thin films on fluorinedoped tin oxide (FTO) substrate by Aerosol-Assisted Chemical Vapour Deposition (AACVD) process using [Cu (dmae)₂(H₂O)] and [Sn (dmae) (OAc)]₂ as molecular precursors for SnO and Cu₂O, respectively at 400 °C. The X-ray diffraction (XRD) pattern can be ascribe...
Preprint
Full-text available
The miniaturization of electronic devices and the consequent decrease in the distance between conductive lines have increased the risk of short circuit failure due to electrochemical migration (ECM). The presence of ionic contaminants in the devices can accelerate the ECM process. This work systematically investigates the ECM of tin (Sn) in the pre...
Article
Full-text available
Abundant CO2 emissions from industries and the transportation sector cause an alarming threat to the planet due to overwhelming concerns over CO2 induced climate change. To resolve this tremendous environmental pollution, the long-term solution for CO2 mitigation exists in the conversion of CO2 into value-added products through catalysis. Among sev...
Article
Nanomedicine has seen a significant rise in the development of new research tools and clinically functional devices. In this regard, significant advances and new commercial applications are expected in the pharmaceutical and orthopedic industries. For advanced orthopedic implant technologies, appropriate nanoscale surface modifications are highly e...
Article
Organ repair, regeneration, and transplantation are constantly in demand due to various acute, chronic, congenital, and infectious diseases. Apart from traditional remedies, tissue engineering (TE) is among the most effective methods for the repair of damaged tissues via merging the cells, growth factors, and scaffolds. With regards to TE scaffold...
Article
Composites of hydroxyapatite (HA) and Bioglass® (BG) have been prepared to evaluate their physical, chemical, and biochemical characteristics. Several researchers have attempted to prepare these types of composites to combine the appealing characteristics of BG (such as high bioactivity and osteoinduction) with those of HA. The sintering temperatur...
Article
For the first time, the binary components of a self-healing epoxy system was developed comprising of a green acrylated epoxy resin and its thiol-based curing agent encapsulated in a poly (methyl methacrylate)(PMMA) shell by electrospraying technique. The field emission scanning electron microscopy images revealed that the two microcapsules formed w...
Article
An alternative way to produce Graphene Quantum Dots (GQDs) economically is proposed in this study where corn powder was used as a green precursor to fabricate GQDs in a hassle less one-step route. These GQDs showed a stable, size-dependent in aqueous solution. The size of GQDs obtained from this work is approximately measure from 0.21 to 5.20 nm. T...
Article
The synthesis of Pt/g-C3N4/polyaniline nanocomposites (Pt/g-C3N4/PAn NCs) via the direct reduction of Pt (II) in the presence of L-cysteine as the reducing agent is presented in this study. X-ray diffraction analysis showed that the Pt cations were reduced to metallic Pt in the presence of L-cysteine. Field emission scanning electron microscope ima...
Article
Dendrimers are highly branched synthetic macromolecules that offer promising prospects for utilizing them in broad applications. This study investigates the role of polyamidoamine (PAMAM) dendrimer for lipase-catalyzed reaction in aqueous solution. The hydrolysis of para-nitrophenyl palmitate (pNPP) by four different lipases was tested with PAMAM d...
Article
Two new macrocyclic dibenzotetraaza[14]annulene (DBTAA) compounds with indolenine (5 ) and pyridoindolenine (6 ) moieties were synthesized and characterized by spectroscopy. Both DBTAAs exhibit strong UV‐Vis absorption properties in the Soret band region. The theoretical second‐order non‐linear optical (NLO) property, electric dipole moment (μ), di...
Article
Full-text available
The low-pressure spark plasma sintering (SPS) technique is adopted to fabricate hydroxyapatite-bioglass (HA-BG) scaffolds while maintaining the physical properties of both components, including their bulk and relative density and hardness. However, prior to their orthopaedic and dental applications, these scaffolds must be validated via pre-clinica...
Article
An electrochemical sensor was prepared using a unique composite of functionalized multi-wall carbon nanotubes (MWCNTsf), nitrogen doped graphene (NGr) and chitosan (CTS) with electrodeposited copper (Cu) modified onto glassy carbon electrode (GCE) for the analytical detection of an anticancer drug, nilutamide (NLM). Cyclic voltammetry (CV) and diff...
Article
The effect of g-C3N4 on the sensing performance of a Pt/g-C3N4/ polythiophene nanocomposite (Pt/g-C3N4/PTh NCs) was investigated in this work. The nanocomposites were synthesized via the chemical reduction of Pt (II) in the presence of l-cysteine as the reducing agent. The synthesized nanocomposite was utilized as a sensing material for the electro...
Article
The main aim of this study was to characterize the molecular interaction between sulfadoxine and the major transport protein in the blood plasma, human serum albumin using fluorescence, absorption, circular dichroism, and voltammetric techniques along with computational methods. Sulfadoxine-induced changes in the fluorescence signal of human serum...
Article
Full-text available
Excessive emission of carbon dioxide (CO2) into the environment in addition to depletion of natural fossil fuel leads to the environmental pollution and energy crisis. Therefore, the photelectroreduction of CO2 is a suitable and versatile technique to convert CO2 gas into valuable organic products. Herein, Ru/Mn/Co (1:13:13) supported anatase TiO2...
Article
Deep eutectic solvents (DESs) are credible alternatives for ionic liquids. Most DESs have favourable properties such as lower production cost, biodegradability and are environmental friendly. In this work, tetraethylene glycol (TTEG)-based DESs were successfully synthesized by mixing TTEG and choline chloride at different molar ratios. The physical...
Article
Research on plasmonic photoactive materials has resulted in some significant advancements in UV–Vis photo-active catalytic reactions. In this study, pristine ZnO and Ag–ZnO thin films were prepared from a zinc complex {Zn5(TFA)7(OH)2(H2O)4(OAc)}n•2(C4H6O2) (1) [TFA = trifluoroacetate, OAc = acetate] precursor and its homogenous solution with Ag(CH3...
Article
Full-text available
A platinum–silver graphene (Pt–Ag/Gr) nanocomposite modified electrode was fabricated for the electrochemical detection of dopamine (DA). Electrochemical studies of the Pt–Ag/Gr nanocomposite towards DA detection were performed by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The CV analysis showed that Pt–Ag/Gr/GCE had enhanced...
Article
Full-text available
Understanding the corrosion inhibition behavior of super-amphiphobic coating is important to ensure practicability in the real application. 2 layers system of super-amphiphobic coating was successfully developed using functionalized nano-Al 2 O 3 incorporated in polyvinylidene fluoride (PVDF). This study investigates the effect of different amount...
Article
Full-text available
Antioxidants interact with free radicals, terminating the adverse chain reactions and converting them to harmless products. Antioxidants thus minimize the oxidative stress and play a crucial role in the treatment of free radicals-induced diseases. However, the effectiveness of natural and/or synthetic antioxidants is limited due to their poor absor...
Article
Surface enhanced Raman scattering (SERS) DNA biosensing is an ultrasensitive, selective, and rapid detection technique due to its ability to produce molecule specific distinct fingerprint spectra. It supersedes the long...
Article
An efficient, low cost and non-precious hybrid metal catalyst compound, consisting of boron-doped graphene nanosheets (BGNS) and manganese oxide nanotube (MnO 2) is used as a catalyst for oxygen reduction reaction (ORR). The morphological, chemical composition and electrochemical properties of the as-synthesized BGNS-MnO 2 composite (MnO 2 @BGNS) w...
Article
Ultrafine grained ZK60 magnesium (UFG–ZK60 Mg) tubes were successfully fabricated by a parallel tubular-channel angular pressing (PTCAP) process. The number of pass effects on the phase composition, microstructural features and mechanical properties were examined. Also, two types of Artificial Neural Network known as Radial Basis Function (RBF) and...
Article
Small sized electrocatalysts, which can be obtained by rapid nucleation and high supersaturation are imperative for outstanding methanol oxidation reaction (MOR). Conventional microwave synthesis processes of electrocatalysts include ultrasonication, stirring, pH adjustment, and microwave irradiation of the precursor mixture. Ethylene glycol (EG),...
Article
This study aimed to prepare nanoporous anodic alumina on AA3003-H14 aluminum alloy using a mild anodization process with minimal working voltage and treatment time. The microstructural features, mechanical properties, and tribocorrosion behavior of the coatings were assessed to determine the optimum conditions for the fabrication of nanoporous anod...