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Enabling efficient visible light photocatalytic water splitting over SrTaO2N by incorporating Sr in its B site
Sun, Xiaoqin1; Wu, Fangfang1; Liu, Gang2; Xu, Xiaoxiang1
Corresponding AuthorXu, Xiaoxiang(xxxu@tongji.edu.cn)
2018-11-14
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume6Issue:42Pages:20760-20768
AbstractThe 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.
Funding OrganizationYoung 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
DOI10.1039/c8ta06934d
Indexed BySCI
Language英语
Funding ProjectYoung 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 Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000451600200018
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/130509
Collection中国科学院金属研究所
Corresponding AuthorXu, Xiaoxiang
Affiliation1.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
Recommended Citation
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.
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