Quinary wurtzite Zn-Ga-GeN-O solid solutions and their photocatalytic properties under visible light irradiation

IMR OpenIR

	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
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	6 页码:-
摘要	Wurtzite 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.
部门归属	[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
资助者	National Natural Science Foundation of China [21401142]; Shanghai Science and Technology Commission [14DZ2261100]; Fundamental Research Funds for the Central Universities
收录类别	sci
语种	英语
WOS记录号	WOS:000368108900001
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75087
专题	中国科学院金属研究所
通讯作者	xxxu@tongji.edu.cn
推荐引用方式 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):-.