Vinod K Gupta

Vinod K Gupta
University of Johannesburg | uj · Department of Applied Chemistry

PhD

About

826
Publications
235,357
Reads
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96,994
Citations
Citations since 2016
206 Research Items
61027 Citations
201620172018201920202021202202,0004,0006,0008,00010,000
201620172018201920202021202202,0004,0006,0008,00010,000
201620172018201920202021202202,0004,0006,0008,00010,000
201620172018201920202021202202,0004,0006,0008,00010,000
Additional affiliations
May 2015 - present
University of Johannesburg
Position
  • Distiguished Visiting Professor
January 2010 - December 2012
King Fahd University of Petroleum and Minerals
July 2004 - August 2004
Technische Universität Chemnitz
Position
  • GUEST PROFESSOR

Publications

Publications (826)
Article
Potentiometric-based biosensors have the potential to advance the detection of several biological compounds and help in early diagnosis of various diseases. They belong to the portable analytical class of biosensors for monitoring biomarkers in the human body. They contain ion-sensitive membranes sensors can be used to determine potassium, sodium,...
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Daunorubicin is a famous anthracycline anticancer chemotherapy drug with many side effects that is very important to measure in biological samples. A daunorubicin electrochemical biosensor was fabricated in this study using ds-DNA as the biorecognition element and glassy carbon electrode (GCE) amplified by Pt/SWCNTs as a sensor. The synthetization...
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Cancer is one of the most dangerous diseases as a result of its characteristic features such as indefinite growth of cells, infringement of healthy tissues, and also metastasis. In recent years, a wide range of new ways to treat cancer has been used. Dendrimer is a category of highly branched 3D structures that has multiple surface functional group...
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Background and objectives: Multiple-Drug-Resistance (MDR) among bacteria is an imminent problem and alternative therapies are seen as a future abode. Agarwood Oil (AO) is described to possess antimicrobial activity besides many other medicinal utilities. This paper discusses the antimicrobial activity of AO on MDR and non-MDR strains of microbes of...
Article
In this work, MgFeCrO4 magnetic nanoparticles were prepared in spinel structure via the green sol-gel method. The high photocatalytic activity of MgFeCrO4 MNPs was studied for the fast degradation of organic dye in water solution at room condition and natural pH. Tragacanth gel was used for providing comfortable, nature, and an inexpensive sol-gel...
Article
The algal biochar reinforced trimetallic nanocomposite (AlBc TNC) was fabricated by employing facile greener microwave technique. AlBcTNC was explored as a promising adsorbent/photocatalyst designed for the exclusion of malachite green (MG). The prepared AlBcTNC was examined by X-Ray photoelectron spectroscopy (XPS), Scanning electron microscopy (S...
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This work investigates the removal of cyanide as a noxious pollutant in the gold processing effluent (Aq-Dara mine, Takab, Iran) using H2O2, H2O2+Fe(II) (Fenton), H2O2+Cu(II), NaClO and Ca(ClO)2 oxidants. Implementation of purification operation was carried out with the parameters change including pH, oxidant dosage, temperature and time of the rea...
Article
Taguchi orthogonal array (L9 OA) experimental design was used to determine the optimum conditions for the removal of methylene blue (MB) dye using single-walled carbon nanotubes functionalized with an amine group (SWCNT-NH2). The effects of the experimental parameters (MB initial concentration, SWCNT-NH2 dosage, temperature and pH) on the removal e...
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In this work, PbTe nanoparticles-modified graphite screen-printed electrodes (PbTe NPs/SPE) has been designed for electrochemical determination of atorvastatin for the first time. Striking advantages, including easiness, low manufacturing cost, and being one-use are exhibited by the sensor. Analyte electrochemical behavior was characterized by cycl...
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Toxic chemical and a strong mutagen ethidium monoazide bromide (EMA) adsorption on the graphene oxide (GO) surface from aqueous solution was investigated. Influencing parameters such as temperature of solution, contact time, ethidium monoazide bromide initial concentration and pH were studied. According to the results of EMA adsorption on graphene...
Article
In previous years, Cobalt ferrite has gained huge consideration in the field of semiconductor photocatalysis for waste water treatment. Cobalt ferrite and its derivatives own tunable magnetic properties which results in higher absorption capability in comparison with other photocatalyst semiconductors. In the current review, a brief overview of CoF...
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This research introduces a new modification of carbon paste electrode (CPE) by ZnIn2S4 nanoparticles (ZIS) and an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate, (BMIM.PF6)) as a sensitive sensor for voltammetric detection of gliclazide and glibenclamide compared to unmodified carbon paste electrode. The modified electrode (ZISILCPE)...
Article
Chitosan-glyoxal/Polyvinylpyrrolidone/MoS2 (CSG/PVP/MoS2) nanocomposites were synthesized via hydrothermal-ultrasonic method. The CSG/PVP/MoS2 nano catalyst was characterized by XRD, UV-visible spectroscopy, FTIR, SEM and X-ray photoelectron spectroscopy, and diclofenac was used for the adsorption and photo-degradation test. SEM revealed the CSG/PV...
Article
Graphene, the recently discovered allotrope of carbon, is a single atom layered aromatic carbon material which is tightly packed into a two-dimensional hexagonal crystal lattice. It is the thinnest material known to man and has a huge application in various fields of science and technology. However, despite having excellent characteristics , the us...
Article
We report the preparation of the efficient photocatalyst Bi2O3, and FeS2-Bi2O3 nanocomposites. Nanomaterials prepared with sonochemical assisted hydrothermal methods. The morphology sensitization and optical changes of the nanocomposites were studied using dynamic light scattering and UV–vis spectroscopy analysis, X-ray photoelectron and diffractio...
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In this study, multi-walled carbon nanotubes (MWCNT) surface functionalization with amine group is studied for methyl orange (MO) dye removal from aqueous solution. The adsorbent was prepared using 1,2-ethylenediamine as amine via a microwave combination to functionalize the carbon nanotubes with carboxylic acid (–COOH) then converting to acyl chlo...
Article
The detection of water soluble vitamins using electrochemical method is widely established in pharmaceutical quality control laboratories, and especially the recent advances in hybrid heterostrucure nanomaterials has devoted to enhance the significant analytical parameters like sensitivity, selectivity and fast response time. Herein, we report the...
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The undesirable release of antibiotics into natural water bodies is regarded as major threat to aquatic environment. The fabrication of magnetically separable photocatalyst with high stability and recycle efficiency is emerging as an important strategy to mitigate water pollution. This research work reports a facile fabrication of ternary nanocompo...
Article
Epirubicin is an effective anticancer drug, but naturally causes several side effects. Hence the determination of this drug in biological samples, plays a key role in evaluating its effects and side effects. In this research, a novel label-free DNA-based biosensor was fabricated for the analysis of epirubicin in biological samples. The sensor was f...
Article
Very recently, hybrid photocatalysts are gaining importance due to their unique and enhanced photocatalytic activity. In precedent study, we have successfully prepared Ag⁠3PO⁠4 (AP) and P and S co-doped g-C⁠3N⁠4 (PSGCN) based AP/PSGCN photocatalyst via facile deposition-precipitation method. The P and S co-doped g-C⁠3N⁠4 was prepared via thermal po...
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This paper presents a new technique for computation of series of series without using geometric series formulae. The technique uses computing model of algorithmic geometric series and its mathematical structures [1].
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In this study, the sol-gel method was used to prepare Mg-doped TiO2 nanoparticles from titanium tetraisopropoxide and magnesium sulfate as the dopant precursors. Mg-doped TiO2 shows the formation of anatase phase with polyhedral and spherical particles with an average size of 25-30 nm. X-ray diffraction, X-ray photoelectron spectroscopy, transmissi...
Article
As an electrochemical strategy, we report application of new modified carbon paste electrode amplified with NiO nanoparticle and n-methyl-3-butylimidazolium bromide (CPE/nMBZBr/NiO-NPs) for square wave analysis of benserazide (BZ). The oxidation current of BZ improved ~3.0 times and over-potential of this drug reduces ~50 mV at CPE/nMBZBr/NiO-NPs c...
Article
Herein, Ag-anchored Bi 2 O 3 /g-C 3 N 4 based Z-scheme photocatalyst was prepared using facile hydro-thermal approach for photocatalytic degradation of imidacloprid pesticide (IMP). Graphitic carbon nitride (GCN) nanocomposites were fabricated via thermal polycondensation and Ag-anchored Bi 2 O 3 /g-C 3 N 4 (Ag-BO/GCN) via single-step hydrothermal...
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Background: Removal of sulfur-containing compounds from the aqueous environment is necessary as these compounds pose potential risks to human health, hygienic management and bring great economic losses due to fouling of resin bed and corrosion of process equipment. Objective: This work aims to study the H2S removal efficiency using high surface are...
Article
In this work, we have successfully anchored Ag3VO4 (AV) onto P and S co-doped g-C3N4 (PSGCN) to prepare high-dispersible AV/PSGCN photocatalyst via a deposition-precipitation method. The P and S co-doped g-C3N4 was synthesized via thermal polycondensation using hexachlorotriphosphazene (HCCP) and thiourea as precursors. AV/PSGCN was characterized u...
Article
In this study, adsorption of phenol from aqueous solutions was studied. Scoria stone was modified by different acids (nitric acid, sulfuric acid, acetic acid, phosphoric acid and hydrochloric acid) at various concentrations. The obtained modified scoria was characterized using the Fourier transform infrared spectrograph (FTIR), scanning electron mi...
Article
In this work, we have reported synthesis of AgBr/BiOBr photocatalyst supported on graphene (Gr) using facile precipitation method. AgBr/BiOBr/Gr was characterized using various spectral techniques like FESEM, TEM, XRD, FTIR, XPS, Raman and PL analysis. AgBr/BiOBr/Gr had improved visible light absorption. PL studies indicated the reduction in recomb...
Article
Mixed level design experiment and Taguchi orthogonal array design L8 (4^1, 2^2) was applied to optimize pyrolysis process for preparing bone char in order to remove fluoride from real groundwater. Taguchi analysis is through selecting high signal-to-noise ratio as a better response. Estimated effects index based on the least squares approach indica...
Article
In the present work, WS2 nanoparticles and immobilized on chitosan and polycaprolactone as biodegradable polymers as photocatalyst were developed and studied for photocatalytic degradation of representative Neomycin as an aminoglycoside antibiotic. The WS2 nanoparticles were synthesized using the hydrothermal method. Further, the photocatalyst were...
Article
Diazinon is one of the most commonly used organophosphorus pesticides in agricultural activities, and its access to groundwater and surface waters damages the animal and plant environments. This study aimed to evaluate the applicability of the adsorption process for the removal of organophosphorus diazinon pesticide from water using multi-wall carb...
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Herein, we describe the fabrication of NiO decorated single wall carbon nanotubes (NiO-SWCNTs) nanocomposites using the precipitation method. The synthesized NiO-SWCNTs nanocomposites were characterized by X-ray diffraction (XRD) and Transmission electron microscopy (TEM). Remarkably, NiO-SWCNTs and 1-butylpyridinium hexafluorophosphate modified ca...
Article
Bimetallic nanomaterials have potential catalytic behaviour in hydrogenation, clean-energy production, cata-lysis and sensors due to their great stability, loftier activity unique electrical and chemical properties. Herein, we prepared PdeAg bimetallic nanoparticles synthesized by using fungal extracted aqueous method, which is environmentally frie...
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Phenol present in industrial effluents is a toxicant matter which causes pollution of environments aqueous. In this work, scoria was modified by iron in order to increasing of adsorbent efficiency and effective removing of phenol. Effects of independent variables including pH, adsorbents dosage, contact time and adsorbate concentration on removing...
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a b s t r a c t Residencecanaffectvariousaspects of one'sphysical,psychological andsocialhealth.Therefore,thepresentdatasetaimedtoassessthe levelofruralhousewives’ awarenessandattitudestowardsthe importanceofresidenceanditscompliancewithhealthstandards.To collectthepresentdataset,fourvillageswereselectedfromtheGilan- e-Gharbtownshipusingtherandomiz...
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Air pollution sources in indoor area are one of the main factors for reducing indoor air quality of locations. In the current research, factors affecting indoor air quality and its symptoms are evaluate as case study in an office building in Mashhad (Iran). In order to conduct this descriptive-analytical study, gas pollutants affecting indoor air q...
Article
Activated carbon from oak tree is used as adsorbent for the removal of noxious anionic dye sunset yellow. The prepared adsorbent is characterized using X-ray diffraction, Scanning Electron microscopy equipped with Energy-Dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy. In addition to this, parameters like initial concentra...
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The present study aimed to assess the levels of staff׳s awareness and attitudes towards the importance of household hazardous wastes (HHW) management at Kermanshah University of Medical Sciences (KUMS), Kermanshah, Iran. The awareness and attitudes were measured using a researcher-made questionnaire, which was then completed by 200 personnel at KUM...
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Ultrasonic waves superimposed with Ag nanoparticles festooned on AC was used as a new economical and green methodological adsorbent for the efficient removal of noxious methylene blue (MB) from the solvent phase. The developed adsorbent was characterized using various analytical techniques namely SEM, XRD, and BET. The impact of influential variabl...
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Phenylhydrazine, phenol, and hydroxylamine are three important water pollutants, and the presence of them is harmful for the human body. Therefore, in the present study, 1-methyl-3-butylimidazolium bromide (MBIZBr) and CoFe2O4 nanoparticles (NPs) were successfully used for the amplification of carbon paste electrode (CPE) as a novel voltammetric se...
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The electrical conductivity effect of MgO nanoparticle (MgO-NPs) and electro-catalytic effect of acetylferrocene (AF) was studied for modification of carbon paste electrode (CPE) as a highly sensitive electrochemical sensor for electro-catalytic determination of L-cysteine in the aqueous solution. The AF/MgO-NPs/CPE showed good electro-catalytic ac...
Article
A nanocomposite of SiO2@Fe3O4 were synthesized and characterized by Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy. The poly(dipicolinic acid)/SiO2@Fe3O4 based electrochemical based sensor was fabricated by the electropolymerization...
Article
Bimetallic nanomaterials have potential catalytic behaviour in hydrogenation, clean- energy production, catalysis and sensors due to their great stability, loftier activity unique electrical and chemical properties. Herein, we prepared PdAg bimetallic nanoparticles synthesized by using fungal extracted aqueous method, which is environmentally frien...
Article
Nanohydrogel of tragacanth gum using microwave radiations is used for the controlled release of ampicillin. Tragacanth gum was grafted with itaconic acid, employing graft copolymerization in the presence of N, N¹–methylene-bis-acrylamide (MBA) as cross linker, and potassium persulphate as initiator. The prepared nanohydrogel was characterized using...
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Food hygiene is a key factor at the time of production and distribution of food. Therefore, the present study aimed to assess the interventional role of education in changing the knowledge and attitudes of urbane mothers towards food hygiene in Ravansar Township, Kermanshah, Iran. To this end, 200 mothers residing in Ravansar Township were selected...
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The inhibition of electrons-holes recombination and enhancement of visible light photocatalytic activity were accomplished by the synthesized TiO2/CS nanocomposites system. In this present work, the different weight ratio of TiO2 and chitosan (75:25, 50:50 and 25:75) nanocomposites were synthesized via two-step method. After that, the existing func...
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This study was aimed to investigate the distribution of various species of fecal coliform in urban, rural and private drinking water sources of Kermanshah, in the west of Iran. For this study, data of ten years period (2006–2016) assessments of microbial quality regarding various species of Fecal coliforms was taken from health centers associated w...
Article
Background Nanomaterials have numerous potential applications in many areas such as electronics, optoelectronics, catalysis and composite materials. Particularly, one dimensional (1D) nanomaterials such as nanobelts, nanorods, and nanotubes can be used as either functional materials or building blocks for hierarchical nanostructures. 1D nanostructu...
Article
In this work, adsorption capacity of egg whites lysozyme on multi-walled carbon nanotubes (MWCNTs) and amino group functionalized multi-walled carbon nanotubes (MWCNT-NH2) was examined. The different parameters affecting the adsorption process for protein were optimized such as initial protein concentration, contact time, initial pH levels, and tem...
Article
In this study, carbon paste electrode (CPE) modified with NiO/SWCNTs and 1-butyl-4-methylpyridinium tetrafluoroborate (1B4MPTFB) was used for the effective determination of raloxifene as a sensor. The use of NiO/SWCNTs and 1B4MPTFB in the electrode matrix showed great conductivity for electro-oxidation of raloxifene and nanomolar determination of r...
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Magnetic carbon nanotubes composite (MWCNTs-Fe3O4) was successfully prepared and characterized using different techniques. MWCNTs-Fe3O4 displays entangled network of oxidized MWCNTs attached with Fe3O4 clusters with specific surface area of 92 m 2 g-1. The adsorption performance of as prepared composite was investigated for Hg(II) removal. Several...
Article
In the present work, we synthesized La/Cu/Zr trimetallic nanoparticles (TNPs) by microwave method, which is applied as an effective nanophotocatalyst for the removal of a ampicillin antibiotic from aqueous media. The prepared nanomaterial was characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron...
Article
Novel [email protected](OH)2 nanocomposites, designated as [email protected](OH)2 NCs, were synthesised by depositing Ni(OH)2 nonoparticles onto 2-napthalene sulfonic acid doped PANI nanotubes surface. Characterization tools confirmed the presence Ni(OH)2 nanoaprticles onto the reactive PANI nanotubes surface. Greater surface area (26.85 m²/g), and...
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The development of highly stable and biocompatible Cu nanocomposite has been employed herein as an electrocatalytic active material for electrochemical sensing. The synthesis of carboxymethyl cellulose (CMC) stabilized Cu nanoparticles in aqueous medium under room temperature has been carried out. To identify the surface properties of the synthesiz...
Article
Novel fixed-bed adsorption investigations applying carbon nanotube (CNT) coated poly-amidoamine dendrimer (PAMAM) as an adsorbent have been studied for the adsorption of As(III) as arsenous acid, Co²⁺, and Zn²⁺ from aqueous solution. FTIR, SEM, ¹H NMR, TGA, TEM, Raman Spectra and zeta potential measurements have been employed for characterizing the...
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This article reports, synthesis and characterization of the ternary Ag/CeO2/ZnO nanostructure which was tested for visible light photocatalytic degradation of industrial textile effluent. The HR-TEM and XPS results confirms the presence of line dislocation linear defect induced oxygen vacancy in the ternary Ag/CeO2/ZnO nanostructure. The oxygen vac...
Article
In this work, we present the synthesis of Ag doped TiO2 materials. The products are characterized by powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption, and hydrogen adsorption. The Ag/TiO2 materials exhibit 3.65 times higher in hydrogen adsorption capability compared with the non-doped...
Article
Simple chemical reduction method has been used to synthesize the chitosan supported palladium nanoparticles. The prepared samples were analyzed using various characterizations. 4-Nitrophenol (4-NP) is a toxic water pollutant. The catalytic hydrogenation of recalcitrant pollutant by sodium borohydride is the prime model reaction that can be easily a...
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In this study, a novel adsorbent, dioctylphetalate triethylenetetraamine magnetic nanoparticles (DOP-TETA-MNP) via a solvent-free procedure were synthesized for the removal of Zn (II) ions from aqueous solution. The morphological and anatomical characterization was investigated by various analytical techniques such as FTIR and SEM. Experimental dat...