| 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 Author | Xu, Xiaoxiang(xxxu@tongji.edu.cn) |
| 2018-11-14 | |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY A
 |
| ISSN | 2050-7488 |
| Volume | 6Issue:42Pages:20760-20768 |
| Abstract | 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. |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Energy & Fuels ; Materials Science |
| WOS Subject | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000451600200018 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/130504 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xu, Xiaoxiang |
| Affiliation | 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 |
| 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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