Enabling efficient visible light photocatalytic water splitting over SrTaO2N by incorporating Sr in its B site

doi:10.1039/c8ta06934d

IMR OpenIR

	Enabling efficient visible light photocatalytic water splitting over SrTaO2N by incorporating Sr in its B site
	Sun, Xiaoqin 1; Wu, Fangfang 1; Liu, Gang 2; Xu, Xiaoxiang 1
通讯作者	Xu, Xiaoxiang(xxxu@tongji.edu.cn)
	2018-11-14
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A
ISSN	2050-7488
卷号	6 期号:42 页码:20760-20768
摘要	The perovskite oxynitride SrTaO2N is a promising compound for solar energy conversion because it has strong visible light absorption at wavelengths as long as 650 nm. However, its photocatalytic activity is generally very poor, primarily because of the high defect concentration induced during its synthetic procedures as well as photocatalytic self-decomposition events. In this work, we introduce Sr into the B site of SrTaO2N to form a complex perovskite oxynitride, Sr-3(Sr1/3Ta2/3)(3)O9-xNy (i.e. Sr4Ta2O9-xNy). The new compound has a much lower defect concentration compared to SrTaO2N and much higher stability against photocatalytic self-decomposition. More importantly, Sr4Ta2O9-xNy demonstrates significantly improved photocatalytic activity for water oxidation and reduction reactions under visible light irradiation (lambda >= 400 nm) than SrTaO2N, approaching an apparent quantum efficiency as high as 3.4% at 420 +/- 20 nm.
资助者	Young Scientists Fund of the National Natural Science Foundation of China ; Recruitment Program of Global Youth Experts (1000 plan) ; Shanghai Science and Technology Commission ; Fundamental Research Funds for the Central Universities
DOI	10.1039/c8ta06934d
收录类别	SCI
语种	英语
资助项目	Young Scientists Fund of the National Natural Science Foundation of China[21401142] ; Recruitment Program of Global Youth Experts (1000 plan) ; Shanghai Science and Technology Commission[14DZ2261100] ; Fundamental Research Funds for the Central Universities
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000451600200018
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：35[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/321006/130509
专题	中国科学院金属研究所
通讯作者	Xu, Xiaoxiang
作者单位	1.Tongji Univ, Shanghai Key Lab Chem Assessment & Sustainabil, Sch Chem Sci & Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xiaoqin,Wu, Fangfang,Liu, Gang,et al. Enabling efficient visible light photocatalytic water splitting over SrTaO2N by incorporating Sr in its B site[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(42):20760-20768.
APA	Sun, Xiaoqin,Wu, Fangfang,Liu, Gang,&Xu, Xiaoxiang.(2018).Enabling efficient visible light photocatalytic water splitting over SrTaO2N by incorporating Sr in its B site.JOURNAL OF MATERIALS CHEMISTRY A,6(42),20760-20768.
MLA	Sun, Xiaoqin,et al."Enabling efficient visible light photocatalytic water splitting over SrTaO2N by incorporating Sr in its B site".JOURNAL OF MATERIALS CHEMISTRY A 6.42(2018):20760-20768.