Zr doped mesoporous LaTaON2 for efficient photocatalytic water splitting

doi:10.1039/c8ta11561c

CORC > 金属研究所 > 中国科学院金属研究所

	Zr doped mesoporous LaTaON2 for efficient photocatalytic water splitting
	Wang, Yawei 3,5; Jin, Shu 3; Pan, Guoxiang 4; Li, Zuxin 4; Chen, Long 5; Liu, Gang 1,2; Xu, Xiaoxiang 3,4,5
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2019-03-14
卷号	7 期号:10 页码:5702-5711
ISSN号	2050-7488
DOI	10.1039/c8ta11561c
通讯作者	Liu, Gang(gangliu@imr.ac.cn) ; Xu, Xiaoxiang(xxxu@tongji.edu.cn)
英文摘要	In spite of strong visible light absorption and ideal band edge positions, LaTaON2 normally has very poor photocatalytic activity under ordinary conditions. Previous modifications of LaTaON2 such as aliovalent doping generally lead to strong reduction of its visible light absorption, being unfavorable for solar energy harvesting. Here, we introduce Zr into the structure of LaTaON2 (i.e. LaTa1-xZrxO1+yN2-y (0 x 0.15)) and successfully improve its photocatalytic activities without sacrificing its light absorption capability. More importantly, Zr doping helps to reduce Ta4+ defect concentration, improve surface hydrophilicity and induce mesoporous microstructures in LaTaON2, all of which contribute to the superior photocatalytic activities for water splitting reactions. Apparent quantum efficiency as high as 0.93% at 420 +/- 20 nm has been achieved on LaTa0.9Zr0.1O1+yN2-y (x = 0.10) for photocatalytic water oxidation reactions, being the highest AQE reported for LaTaON2 to date. Further photoelectrochemical analysis suggests that Zr doped LaTaON2 has better charge separation conditions, smaller interfacial charge transfer resistance and longer electron lifetime compared to pristine LaTaON2. This simple method using Zr as a dopant can be well extended to other perovskite oxynitrides.
资助项目	National Natural Science Foundation of China[21401142] ; National Natural Science Foundation of China[51825204] ; Shanghai Science and Technology Commission[14DZ2261100] ; Fundamental Research Funds for Central Universities
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000463824300061
资助机构	National Natural Science Foundation of China ; Shanghai Science and Technology Commission ; Fundamental Research Funds for Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132828]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Gang; Xu, Xiaoxiang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Tongji Univ, Putuo Peoples Hosp, Clin & Cent Lab, 1291 Jiangning Rd, Shanghai 200060, Peoples R China 4.Huzhou Univ, Dept Mat Engn, Huzhou 313000, Peoples R China 5.Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, 1239 Siping Rd, Shanghai 200092, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yawei,Jin, Shu,Pan, Guoxiang,et al. Zr doped mesoporous LaTaON2 for efficient photocatalytic water splitting[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(10):5702-5711.
APA	Wang, Yawei.,Jin, Shu.,Pan, Guoxiang.,Li, Zuxin.,Chen, Long.,...&Xu, Xiaoxiang.(2019).Zr doped mesoporous LaTaON2 for efficient photocatalytic water splitting.JOURNAL OF MATERIALS CHEMISTRY A,7(10),5702-5711.
MLA	Wang, Yawei,et al."Zr doped mesoporous LaTaON2 for efficient photocatalytic water splitting".JOURNAL OF MATERIALS CHEMISTRY A 7.10(2019):5702-5711.