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Quinary wurtzite Zn-Ga-GeN-O solid solutions and their photocatalytic properties under visible light irradiation
Xie, Yinghao; Wu, Fangfang; Sun, Xiaoqin; Chen, Hongmei; Lv, Meilin; Ni, Shuang; Liu, Gang; Xu, Xiaoxiang; xxxu@tongji.edu.cn
2016
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume6Pages:-
AbstractWurtzite solid solutions between GaN and ZnO highlight an intriguing paradigm for water splitting into hydrogen and oxygen using solar energy. However, large composition discrepancy often occurs inside the compound owing to the volatile nature of Zn, thereby prescribing rigorous terms on synthetic conditions. Here we demonstrate the merits of constituting quinary Zn-Ga-Ge-N-O solid solutions by introducing Ge into the wurtzite framework. The presence of Ge not only mitigates the vaporization of Zn but also strongly promotes particle crystallization. Synthetic details for these quinary compounds were systematically explored and their photocatalytic properties were thoroughly investigated. Proper starting molar ratios of Zn/Ga/Ge are of primary importance for single phase formation, high particle crystallinity and good photocatalytic performance. Efficient photocatalytic hydrogen and oxygen production from water were achieved for these quinary solid solutions which is strongly correlated with Ge content in the structure. Apparent quantum efficiency for optimized sample approaches 1.01% for hydrogen production and 1.14% for oxygen production. Theoretical calculation reveals the critical role of Zn for the band gap reduction in these solid solutions and their superior photocatalytic acitivity can be understood by the preservation of Zn in the structure as well as a good crystallinity after introducing Ge.
description.department[xie, yinghao ; wu, fangfang ; sun, xiaoqin ; chen, hongmei ; lv, meilin ; xu, xiaoxiang] tongji univ, shanghai key lab chem assessment & sustainabil, dept chem, shanghai 200092, peoples r china ; [ni, shuang] china acad engn phys, laser fus res ctr, sci & technol plasma phys lab, mianyang 621900, peoples r china ; [liu, gang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
Funding OrganizationNational Natural Science Foundation of China [21401142]; Shanghai Science and Technology Commission [14DZ2261100]; Fundamental Research Funds for the Central Universities
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75087
Collection中国科学院金属研究所
Corresponding Authorxxxu@tongji.edu.cn
Recommended Citation
GB/T 7714
Xie, Yinghao,Wu, Fangfang,Sun, Xiaoqin,et al. Quinary wurtzite Zn-Ga-GeN-O solid solutions and their photocatalytic properties under visible light irradiation[J]. SCIENTIFIC REPORTS,2016,6:-.
APA Xie, Yinghao.,Wu, Fangfang.,Sun, Xiaoqin.,Chen, Hongmei.,Lv, Meilin.,...&xxxu@tongji.edu.cn.(2016).Quinary wurtzite Zn-Ga-GeN-O solid solutions and their photocatalytic properties under visible light irradiation.SCIENTIFIC REPORTS,6,-.
MLA Xie, Yinghao,et al."Quinary wurtzite Zn-Ga-GeN-O solid solutions and their photocatalytic properties under visible light irradiation".SCIENTIFIC REPORTS 6(2016):-.
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