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Synthesis and structural analysis of visible light photocatalyst, ZnBiGaO 4 for photocatalytic solar hydrogen production
Author(s) -
Kale Bharat. B.,
Baeg JinOok,
Kong Kijeong,
Moon SangJin,
Lee Sang Mi,
So WonWook
Publication year - 2010
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.1645
Subject(s) - photocatalysis , spinel , hydrogen production , materials science , visible spectrum , hydrogen , diffuse reflection , diffuse reflectance infrared fourier transform , microstructure , band gap , chemical engineering , photochemistry , chemistry , optics , catalysis , optoelectronics , metallurgy , physics , biochemistry , organic chemistry , engineering
In this paper, we are reporting a novel spinel metal oxide photocatalyst, ZnBiGaO 4 for the photocatalytic decomposition of hydrogen sulfide (H 2 S) to generate hydrogen. ZnBiGaO 4 was prepared by two different methods. One is usual solid‐state route and another is hydrothermal route, and this is the first time we are reporting ZnBiGaO 4 synthesized by this route. The newly prepared ZnBiGaO 4 was characterized for its crystal structure and microstructure by using XRD and Field Emission Scanning Electron Microscopy (FESEM), respectively. XRD analysis revealed that the structure of ZnBiGaO 4 is cubic spinel structure. The photocatalyst was also characterized by using UV–Visible diffuse reflectance spectroscopy to determine its band gap and was estimated to be 2.8 eV. Our prima facie observations revealed that the formation of single‐phase cubic spinel ZnBiGaO 4 with significant photocatalytic activity under visible‐light irradiations for solar hydrogen generation from H 2 S. Copyright © 2009 John Wiley & Sons, Ltd.