| Zr doped mesoporous LaTaON2 for efficient photocatalytic water splitting | |
| Wang, Yawei1,3; Jin, Shu1; Pan, Guoxiang2; Li, Zuxin2; Chen, Long3; Liu, Gang4,5; Xu, Xiaoxiang1,2,3 | |
| Corresponding Author | Liu, Gang(gangliu@imr.ac.cn) ; Xu, Xiaoxiang(xxxu@tongji.edu.cn) |
| 2019-03-14 | |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY A
 |
| ISSN | 2050-7488 |
| Volume | 7Issue:10Pages:5702-5711 |
| Abstract | 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. |
| Funding Organization | National Natural Science Foundation of China ; Shanghai Science and Technology Commission ; Fundamental Research Funds for Central Universities |
| DOI | 10.1039/c8ta11561c |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Energy & Fuels ; Materials Science |
| WOS Subject | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000463824300061 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132829 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Gang; Xu, Xiaoxiang |
| Affiliation | 1.Tongji Univ, Putuo Peoples Hosp, Clin & Cent Lab, 1291 Jiangning Rd, Shanghai 200060, Peoples R China 2.Huzhou Univ, Dept Mat Engn, Huzhou 313000, Peoples R China 3.Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, 1239 Siping Rd, Shanghai 200092, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 5.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation 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. |
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