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Journal ArticleDOI

Magnetite nano-spherical quantum dots decorated graphene oxide nano sheet (GO@Fe3O4): Electrochemical properties and applications for removal heavy metals, pesticide and solar cell

TL;DR: In this paper, the performance of synthesized ferrous ferric oxide QDs based on graphene oxide (GO@Fe3O4) nanocomposite were studied by Cyclic Voltammetry, current-voltage (I-V) and Photolumencence (PL) analysis.
About: This article is published in Applied Surface Science.The article was published on 2020-03-15. It has received 68 citations till now. The article focuses on the topics: Oxide & Graphene.
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Journal ArticleDOI
TL;DR: In this paper, a novel cationic polyelectrolyte microsphere (CCQM) has been successfully fabricated via facile chemical crosslinking and emulsification method.

67 citations

Journal ArticleDOI
TL;DR: In this paper, the performance of a single basin solar still using two different augmentation approaches was investigated, namely, reduced graphene oxide (RGO) coated absorber plate in solar still and RGO coated absorbber plate along with activated carbon pellet as sensible heat energy storage medium.

66 citations

Journal ArticleDOI
TL;DR: In this article, the performance of a modified double slope still (MDSSS) was evaluated compared to conventional single slope one (CSS), and the modifications depended on different additives, namely: copper chips, copper oxide nanoparticles/fluid, and paraffin wax as phase change material (PCM).

54 citations

Journal ArticleDOI
08 Feb 2021
TL;DR: The composite material graphene oxide (GO)/MIL-101(Fe) was prepared by a simple one-pot reaction method as mentioned in this paper, which was confirmed by scanning electron microscopy.
Abstract: The composite material graphene oxide (GO)/MIL-101(Fe) was prepared by a simple one-pot reaction method. MIL-101(Fe) grown on the surface of a GO layer was confirmed by scanning electron microscopy...

45 citations

Journal ArticleDOI
02 Jul 2020
TL;DR: Strategically designed straightforward synthetic protocol, low cost, high uptake capacity, and sustainable use render NONPs an ideal alternative for future dye treatment.
Abstract: Dye-containing industrial effluents create major concern nowadays. To address the problem, magnetic nickel oxide nanoparticles (NONPs) were synthesized using the autopropagator combustion technique...

37 citations

References
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Journal ArticleDOI
TL;DR: A review with 156 refs on interfacial electron transfer reactions in colloidal semiconductor solns and thin films and their application for solar light energy conversion and photocatalytic water purifn is presented in this paper.
Abstract: A review with 156 refs. on interfacial electron transfer reactions in colloidal semiconductor solns. and thin films and their application for solar light energy conversion and photocatalytic water purifn. Some of the topics discussed include; optical and electronic properties of colloidal semiconductor particles, quantum size effects in the photoluminescence of colloidal semiconductors, light-induced charge sepn., dynamics of interfacial charge transfer processes, properties and prepn. of nanocryst. semiconductor electrodes, energetics and operations of the nanoporous solar cell.

5,065 citations

Journal ArticleDOI
TL;DR: In this article, various nanomaterials have been reviewed which have been used for water decontamination and a review has been given on adsorption, photocatalytic and antibacterial activity of nanommaterials.

910 citations

Journal ArticleDOI
Yan-Jun Hu1, Yi Liu1, Li-Xia Zhang1, Ru-Ming Zhao1, Song-Sheng Qu1 
TL;DR: In this article, the interaction between colchicine and bovine serum albumin (BSA) was investigated by fluorescence and UV-Vis absorption spectroscopy, and the modified Stern-Volmer quenching constant K a and corresponding thermodynamic parameters Δ H, Δ G, Δ S at different temperatures were calculated.

438 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provide updated information regarding the developments and innovative approaches in the use of zero-valent iron (ZVI) for the treatment of Cr(VI)-polluted waters.
Abstract: Hexavalent chromium is a heavy metal used in a variety of industrial applications which is highly toxic to humans, animals, plants and microorganisms. Moreover, it is a well-established human carcinogen by the inhalation route of exposure and a possible human carcinogen by the oral route of exposure. Therefore, it should be removed from contaminated waters. Its reduction to trivalent chromium can be beneficial because a more mobile and more toxic chromium species is converted to a less mobile and less toxic form. During the last two decades, there has been important interest in using zero-valent iron (ZVI) as a Cr(VI)-reducing agent. A considerable volume of research has been carried out in order to investigate the mechanism and kinetics of Cr(VI) reduction with ZVI, as well as the influence of various parameters controlling the reduction efficiency. Therefore, the purpose of this review was to provide updated information regarding the developments and innovative approaches in the use of ZVI for the treatment of Cr(VI)-polluted waters.

314 citations

Journal ArticleDOI
01 Aug 1998-Langmuir
TL;DR: In this paper, the influence of free carrier scavengers (CH3OH and O2) on the photophysics at solid/liquid interfaces was explored to explore the correlation between surface chemistry and the nature of preexisting or photogenerated defect centers (e.g., F-type and V-type color centers).
Abstract: Powdered zirconia and colloidal zirconia aqueous sols have been examined by diffuse reflectance and absorption spectroscopies and by photoluminescence methods in solid/gas and solid/liquid systems. The former system was examined following high-temperature treatment in vacuo and under reducing and oxidizing atmospheres. Studies of the influence of H2 and O2 on the photophysics of microparticles (powder) and nanoparticles (colloidal sols) of zirconia at solid/gas interfaces and the effects of free carrier scavengers (CH3OH and O2) on the photophysics at solid/liquid interfaces were undertaken to explore the correlation between surface chemistry and the nature of preexisting or photogenerated defect centers (e.g., F-type and V-type color centers). ZrO2 is an insulating, direct wide-gap metal oxide with an optical band gap of ∼5.0 eV; another optical transition occurs at 5.85 eV. The optical behavior depends on whether zirconia is preirradiated in the intrinsic (hν > 5.0 eV) or extrinsic (hν < 5.0 eV) absorpt...

260 citations

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