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Browsing by Subject "Polypyrrole"

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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
Comparative study of graphene-polypyrrole and borophene-polypyrrole composites: Molecular dynamics modeling approach

Author: Folorunso, Oladipo ; Hamam, Y ; Sadiku, R ; Ray, Suprakas S ; Adekoya, GJ Date: 2021 In the search for the solution to energy storage problems, this study investigates the interfacial energy interaction and temperature stability of the composites made of polypyrrole-graphene-borophene (PPy-Gr-Bon) by using molecular dynamics ... Read more
Exfoliated polypyrrole-organically modified montmorillonite clay nanocomposite as a potential adsorbent for Cr (VI) removal

Author: Setshedi, Katlego Z ; Bhaumik, M ; Songwane, S ; nyango, MS ; Maity, Arjun Date: 2013 Exfoliated polypyrrole-organically modified montmorillonite clay nanocomposite (PPy OMMT NC), was prepared as a potential adsorbent, via in situ polymerization of pyrrole monomer for adsorption of toxic Cr(VI) from aqueous solution. The WAXD ... Read more
High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution

Author: Ballav, N ; Maity, Arjun ; Mishra, SB Date: Aug 2012 Glycine doped polypyrrole (PPy-gly) adsorbent was prepared via in situ polymerization of pyrrole (Py) monomer in the presence of glycine (gly) for the removal of Cr(VI). Formation of PPy homopolymer and inclusion of gly in the PPy matrix were ... Read more
High-performance towards removal of toxic hexavalent chromium from aqueous solution using graphene oxide-alpha cyclodextrin-polypyrrole nanocomposites

Author: Chauke, VP ; Maity, Arjun ; Chetty, A Date: Jul 2015 Graphene oxide (GO) was functionalized with alpha cyclodextrin (aCD) through a covalent bond to form GO-aCD nanocomposites (NC). GO-aCD NC was further modified with polypyrrole (PPY) to afford an advanced GO-aCD-PPY NC for the removal of ... Read more
Investigation of graphene loaded polypyrrole for lithium-ion battery

Author: Folorunso, O ; Hamam, Y ; Sadiku, R ; Adekoya, GJ ; Ray, Suprakash S Date: Apr 2020 The discredit state of lithium-ion (Ln) battery is as a result of the challenges associated with electrodes, inadequate power and energy densities. For a battery to be classified as suitable for electric vehicle and grid power suppliers, ... Read more
Morphological, dielectric and electric conductivity characteristics of clay-containing nanohybrids of Poly(N-Vinyl Carbazole) and Polypyrrole

Author: Haldar, I ; Biswas, M ; Nayak, A ; Ray, Suprakas S Date: Oct 2012 Poly(N-vinyl carbazole) (PNVC) and polypyrrole (PPY)-montmorillonite (MMT) clay hybrids were prepared by mechanical grinding of the respective monomers with MMT followed by subsequent standard processing methods. Fourier transform infrared ... Read more
Morphological, dielectric and electric conductivity characteristics of clay-containing nanohybrids of Poly(N-Vinyl Carbazole) and Polypyrrole

Author: Haldar, I ; Biswas, M ; Nayak, A ; Ray, Suprakas S Date: Oct 2012 Poly(N-vinyl carbazole) (PNVC) and polypyrrole (PPY)-montmorillonite (MMT) clay hybrids were prepared by mechanical grinding of the respective monomers with MMT followed by subsequent standard processing methods. Fourier transform infrared ... Read more
Physicochemical and morphological properties of poly(aniline-co-pyrrole)

Author: Mavundla, SE ; Malgas, GF ; Motaung, DE ; Iwuoha, EI Date: 2010 Copolymers of aniline and pyrrole have been prepared by chemical oxidative- olymerization of aniline and pyrrole using ammonium per sulphate and ferric chloride as oxidants. The structural and morphological properties were studied by X-ray ... Read more
Polypyrrole-coated halloysite nanotube clay nanocomposite: synthesis, characterization and Cr(VI) adsorption behaviour

Author: Ballav, N ; Choi, HJ ; Mishra, SB ; Maity, Arjun Date: Dec 2014 A polypyrrole-coated halloysite nanotube nanocomposite (PPy-HNTs NC) was prepared via in situ polymerization of pyrrole (Py) in the dispersion of HNTs and assessed for the removal of toxic Cr(VI) from aqueous solutions. ATR-FTIR and XRD results ... Read more
Polypyrrole-promoted rGO-MoS2 nanocomposites for enhanced photocatalytic conversion of CO2 and H2O to CO, CH4, and H2 products

Author: Kumar, Neeraj ; Kumar, S ; Gusain, Rashi ; Manyala, N ; Eslava, N ; Ray, Suprakas S Date: Sep 2020 Advanced functionalized nanomaterials are indispensable for the efficient production of solar fuels via the reduction of CO(sub2) under solar light. This approach simultaneously addresses two major issues: (a) global warming due to anthropogenic ... Read more
Selective removal of Cr(VI) from aqueous solution by polypyrrole/2,5-diaminobenzene sulfonic acid composite

Author: Kera, Nazia H ; Bhaumik, M ; Ballav, N ; Pillay, K ; Ray, Suprakas S ; Maity, Arjun Date: Aug 2016 A polypyrrole/2,5-diaminobenzenesulfonic acid (PPy/DABSA) composite, synthesised by the in situ oxidative polymerization of pyrrole in the presence of DABSA, was studied as an adsorbent for the removal of Cr(VI) from aqueous solution. The ... Read more
Statistical characterization and simulation of graphene-loaded polypyrrole composite electrical conductivity

Author: Oladipo, Folorunso ; Hamam, R ; Sadiku, R ; Ray, Suprakas S ; Adekoya, GJ Date: Dec 2020 In this study, an effective method has been described and adopted to quantify the diameter and length of graphene nanofiller. The experimentally measured graphene parameters were modelled by using the Weibull distribution. The fitted graphene ... Read more
Synthesis and characterization of polyaniline, polypyrrole and zero-valent iron-based materials for the adsorptive and oxidative removal of bisphenol-A from aqueous solution

Author: Hlekelele, Lerato ; Nomadolo, Nomvuyo E ; Setshedi, Katlego Z ; Mofokeng, Lethula E ; Chetty, Avashnee S ; Chauke, Vangane P Date: May 2019 One pot synthesis of a polypyrrole, polyaniline and Fe(sup0) nano-composite (Fe0-PPY/PANI) was achieved by polymerizing aniline and pyrrole with FeCl(sub3) followed by the reduction of Fe(sup3)+ to Fe(sup0) with NaBH(sub4). PPY/ PANI was ... Read more
Synthesis methods of borophene, graphene-loaded polypyrrole nanocomposites and their benefits for energy storage applications: A brief overview

Author: Oladipo, Folorunso ; Hamam, Y ; Sadiku, R ; Ray, Suprakas S ; Adekoya, GJ Date: Mar 2021 The bane of energy sufficiency lies in the inability to harness and store the plethora of the world's renewable energies. Although many materials have been used in the development of electrochemical storage devices: low energy density, low ... Read more

Now showing items 1-15 of 15

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