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Repercussion of Solid state vs. Liquid state synthesized p-n heterojunction RGO-copper phosphate on proton reduction potential in water

Samal, Alaka and Das, Dipti P and Madras, Giridhar (2018) Repercussion of Solid state vs. Liquid state synthesized p-n heterojunction RGO-copper phosphate on proton reduction potential in water. In: SCIENTIFIC REPORTS, 8 .

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Official URL: http://dx.doi.org/10.1038/s41598-018-21239-7

Abstract

The same copper phosphate catalysts were synthesized by obtaining the methods involving solid state as well as liquid state reactions in this work. And then the optimised p-n hybrid junction photocatalysts have been synthesized following the same solid/liquid reaction pathways. The synthesized copper phosphate photocatalyst has unique rod, flower, caramel-treat-like morphology. The Mott-Schottky behavior is in accordance with the expected behavior of n-type semiconductor and the carrier concentration was calculated using the M-S analysis for the photocatalyst. And for the p-n hybrid junction of 8RGO-Cu-3(PO4)(2)-PA (PA abbreviated for photoassisted synthesis method), 8RGO-Cu-3(PO4)(2)-EG(EG abbreviated for Ethylene Glycol based synthesis method), 8RGO-Cu-3(PO4)(2)-PEG (PEG abbreviated for Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol based synthesis method) the amount of H-2 synthesized was 7500, 6500 and 4500 mu mol/h/g, respectively. The excited electrons resulting after the irradiation of visible light on the CB of p-type reduced graphene oxide (RGO) migrate easily to n-type Cu-3(PO4)(2) via. the p-n junction interfaces and hence great charge carrier separation was achieved.

Item Type: Journal Article
Additional Information: Copy right for the article belong to NATURE PUBLISHING GROUP, MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLA
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 08 Mar 2018 19:08
Last Modified: 05 Mar 2019 06:26
URI: http://eprints.iisc.ac.in/id/eprint/59121

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