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Browsing by Author "Maity, Arjun"

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Additive role of attapulgite nanoclay on carbonyl iron-based magnetorheological suspension

Author: Chae, HS ; Piao, SH ; Maity, Arjun ; Choi, HJ Date: Sep 2014 Attapulgite (ATP), a fibrous nanoclay mineral, was adopted as an additive in this study to improve the sedimentation problem of soft magnetic carbonyl iron (CI)-based magnetorheological (MR) fluids caused by the density mismatch between the ... Read more
The adsorption of Pb(sup2+) and Cu(sup2+) onto gum ghatti-grafted poly(acrylamide-co-acrylonitrile) biodegradable hydrogel: isotherms and kinetic models

Author: Mittal, H ; Maity, Arjun ; Ray, SS Date: Jan 2015 A biodegradable hydrogel polymer of gum ghatti (Gg) with a copolymer mixture of acrylamide (AAm) and acrylonitrile (AN) was synthesized using the free-radical graft copolymerization technique. The effect of graft copolymerization on the surface ... Read more
Amplification of PEC hydrogen production through synergistic modification of Cu2O using cadmium as buffer layer and dopant

Author: Shyamal, S ; Maity, Arjun ; Satpati, AK ; Bhattacharya, C Date: Jun 2019 A facile single step electro-synthesis is applied to develop Cu/Cu2O/Cd(OH)2 thin films from the alkaline copper sulfate solution in presence of different levels of Cd2+. Cadmium implemented a synergistic effect, in the modification of Cu2O, ... Read more
Arsenic(III) sorption on nanostructured cerium incorporated manganese oxide (NCMO): a physical insight into the mechanistic pathway

Author: Gupta, K ; Bhattachary, S ; Nandi, D ; Dhar, A ; Maity, Arjun ; Mukhopadhyay, A ; Chattopadhyay, DJ ; Ray, NR ; Sen, P ; Ghosh, UC Date: Jul 2012 Arsenic(III) sorption was investigated with nanostructured cerium incorporated manganese oxide (NCMO). The pH between 6.0 and 8.0 was optimized for the arsenic(III) sorption. Kinetics and equilibrium data (pH = 7.0 ± 0.2, T = 303 ± 1.6 K, and ... Read more
Calcined magnesite as an adsorbent for cationic and anionic dyes: characterization, adsorption parameters, isotherms and kinetics study

Author: Ngulube, T ; Gumbo, JR ; Masindi, Vhahangwele ; Maity, Arjun Date: Oct 2018 The ability of calcined magnesite for Methylene Blue (MB), Direct Red 81 (DR81), Methyl Orange (MO) and Crystal Violet (CV) dye removal was evaluated in this study. The experiments were designed to test the hypothesis that alkaline earth ... Read more
Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure

Author: Lehutso, Raisibe F ; Tancu, Yolanda ; Maity, Arjun ; Thwala, Melusi Date: Mar 2021 Analytical limitations have constrained the determination of nanopollution character from real-world sources such as nano-enabled products (NEPs), thus hindering the development of environmental safety guidelines for engineered nanomaterials ... Read more
Characterisation of titanium oxide nanomaterials in sunscreens obtained by extraction and release exposure scenarios

Author: Nthwane, Yvonne B ; Tancu, Yolanda ; Maity, Arjun ; Thwala, Melusi Date: Apr 2019 The application of titanium oxide engineered nanomaterials (TiO2 (sub 2) ENMs) in products is dominant in sunscreens and can be release into water systems with relative ease during sunscreen use. The current study examined the physico-chemical ... Read more
Chromium(VI) removal from water using fixed bed column of polypyrrole/Fe3O4 nanocomposite

Author: Bhaumik, M ; Setshedi, K ; Maity, Arjun ; Onyango, M.S Date: 07 Jun 2013 The adsorption of Cr(VI) using polypyrrole/Fe3O4nanocomposite adsorbent was investigated in a continuous flow fixed-bed column. The effects of composition of the nanocomposite, adsorbent mass, influent Cr(VI) concentration and flow rate on ... Read more
Congo red dye removal under the influence of rotating magnetic field by polypyrrole magnetic nanocomposite

Author: Aigbe, UO ; Khenfouch, MK ; Ho, WH ; Maity, Arjun ; Vallabhapurapu, VJ ; Hemmaragala, NM Date: Nov 2018 Studies on magnetic field exposure of congo red contaminated water employing polypyrrole magnetic nanocomposite is reported. Alternating magnetic poles as a function of time has been used to move functionalized nanoparticles in congo red ... Read more
Continuous decontamination of metal-polluted mine water using engineered hybrid adsorbent

Author: Muliwa, AM ; Onyango, MS ; Maity, Arjun ; Ochieng, A Date: May 2018 Mining industries contribute enormously to water pollution through discharge of effluents contaminated with metals. Metals-polluted water is a threat to aquatic and human lives as well as the general ecosystem. Numerous conventional treatment ... Read more
Dehalogenation of aromatic halides by polyaniline/zero-valent iron composite nanofiber: Kinetics and mechanisms

Author: Giri, S ; Bhaumik, M ; Das, R ; Gupta, VK ; Maity, Arjun Date: Mar 2016 Dehalogenation of aryl halides was demonstrated using polyaniline/zero valent iron composite nanofiber (termed as PANI/Fe0) as a cheap, efficient and environmentally friendly heterogeneous catalyst. The catalyst was prepared via rapid mixing ... Read more
Development of a reduced-graphene-oxide based superparamagnetic nanocomposite for the removal of nickel (II) from an aqueous medium via a fluorescence sensor platform

Author: Nandi, D ; Saha, I ; Ray, SS ; Maity, Arjun Date: Sep 2015 Reduced-graphene-oxide based superparamagnetic nanocomposite (GC) was fabricated and applied for the remediation of Ni(II) from an aqueous medium. The as-prepared GC was extensively characterized by Raman, TEM, AFM, SEM–EDX, SQUID, and BET ... Read more
Development of Cu2O thin films under the influence of electrochemical impedance: Applications in improved photoelectrochemical water reduction

Author: Shyamal, S ; Maity, Arjun ; Satpati, AK ; Bhattacharya, C Date: Jun 2019 An impedance assisted novel electrochemical technique has been employed to develop copper oxide (Cu2O) thin films on F-doped tin oxide (FTO)-coated glass substrate. Application of various potentials (-0.60 to -0.40 vs (Ag/AgCl)/V) in the ... Read more
Development of thermoresponsive non-woven 3D scaffold for smart cell culture

Author: Mahlangu, T ; Chetty, A ; Maity, Arjun ; Rossouw, C Date: Oct 2012 The aim of this study was to develop PP-g-PNIPAAm (gNWF) non-woven 3D scaffolds using an oxyfluorination-assisted graft polymerisation (OAGP) method. A further objective was to quantify the graft yield and to characterise the physical and ... Read more
Development of thermoresponsive poly(propylene-g-N-isopropylacrylamide) non-woven 3D scaffold for smart cell culture using oxyfluorination-assisted graft polymerisation

Author: Chetty, AS ; Vargha, V ; Maity, Arjun ; Moolman, FS ; Rossouw, C ; Anandjiwala, R ; Boguslavsky, L ; Mancama, Dalubuhle T ; Focke, WW Date: Feb 2013 Growing cells on 3D scaffolds is far superior to the conventional 2D monolayer culture method. In this study, a novel 3D thermoresponsive poly(propylene-g-N-isopropylacrylamide) (PP-g-PNIPAAm) nonwoven fabric (gNWF) was developed for cell ... Read more
Effect of process parameters on removal and recovery of Cd(II) and Cu(II) from electroplating wastewater by fixed-bed column of nano-dimensional titanium (IV) oxide agglomerates

Author: Debnath, S ; Pillay, K ; Ghosh, UC ; Maity, Arjun Date: 2014 Removal performances of Cd(II) and Cu(II) from water was investigated using agglomerated nanoparticle of hydrous titanium(IV) oxide (NTO) packed fixed bed. The parameters varied were the bed depth, flow rate and feed solution concentrations. ... Read more
Effective removal of cationic dyes from aqueous solution using gum ghatti-based biodegradable hydrogel

Author: Mittal, H ; Maity, Arjun ; Ray, SS Date: Aug 2015 Biodegradable hydrogels of gum ghatti (Gg) with a co-polymer mixture of acrylamide (AAm) and methacrylic acid (MAA) (termed as Gg-cl-P(AAm-co-MAA)) were synthesised by microwave-assisted free radical graft co-polymerisation technique. The ... Read more
Efficient catalytic reduction of nitroaromatics by recyclable 2-naphthalene sulfonic acid doped polyaniline nanotubes decorated with NiFe2O4 nanorods

Author: Sypu, VS ; Kear, NH ; Bhaumik, M ; Raju, Kumar ; Maity, Arjun Date: Mar 2021 A hybrid nanostructure comprising NiFe2O4 nanorods and 2-naphthalene sulfonic acid (2-NSA) doped polyaniline nanotubes (NiFe2O4@PANI/NSA) has been explored as an efficient catalyst for the reduction of nitroaromatics in the aqueous medium. ... Read more
An efficient selective reduction of nitroarenes catalyzed by reusable silver-adsorbed waste nanocomposite

Author: Giri, S ; Das, R ; Van der Westhuyzen, Christiaan W ; Maity, Arjun Date: Jul 2017 Silver nanocomposites (AgNCs) were produced by adsorption onto an electron-rich polypyrrole-mercaptoacetic acid (PPy-MAA) composite, known to be a highly efficient adsorbent for the removal of Ag+ ions from aqueous media in the remediation ... Read more
Enhanced adsorptive degradation of Congo red in aqueous solutions using polyaniline/Fe0 composite nanofibers

Author: Bhaumik, M ; McCrindle, RI ; Maity, Arjun Date: Jan 2015 In this study, a simple approach was described for the fabrication of composite nanofibers (CNFs) of polyaniline/Fe0 (PANI/Fe0) using a template-free method for the reductive degradation and removal of Congo red (CR) from aqueous solutions. ... Read more

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