Insight into the charge transfer in particulate Ta3N5 photoanode with high photoelectrochemical performance
文献类型：期刊论文
| 作者 | Wang, Zhiliang1,2; Qi, Yu1,2; Ding, Chunmei1; Fan, Dayong1,2; Liu, Guiji1,2; Zhao, Yongle1,2; Li, Can1 |
| 刊名 | CHEMICAL SCIENCE
 |
| 出版日期 | 2016 |
| 卷号 | 7期号:7页码:4391-4399 |
| ISSN号 | 2041-6520 |
| DOI | 10.1039/c6sc00245e |
| 文献子类 | Article |
| 英文摘要 | Charge separation is one of the most critical factors for generating solar fuels via photoelectrochemical water splitting, but it is still not well understood. This work reveals the fundamental role of charge transfer in photoanodes for achieving high charge separation efficiency. Specifically, we fabricated a particulate Ta3N5 photoanode by a bottom-up method. By improving the charge separation with refined necking treatment, the photocurrent is increased by two orders of magnitude. The charge separation efficiency (eta(sep)) is analyzed by dividing it into charge generation efficiency (Phi(gene)) and transportation efficiency (Phi(trans)). Necking treatment is found to substantially improve the electron transfer. Transient photovoltage (TPV) measurements based on the Dember effect is used to confirm the benefit of necking treatment in improving the charge transportation. The superior electron transfer in the necked-Ta3N5 electrode is further evidenced by the facile electron exchange reaction with the ferri/ferrocyanide redox couple. Moreover, cobalt phosphate is found to promote both charge separation and surface reaction, resulting in a photocurrent of 6.1 mA cm(-2) at 1.23 V vs. RHE, which is the highest response for a particulate photoanode. |
| WOS关键词 | VISIBLE-LIGHT-IRRADIATION ; OXYNITRIDE TAON PHOTOANODE ; WATER OXIDATION ; TANTALUM NITRIDE ; THIN-FILMS ; HYDROGEN-PRODUCTION ; TRANSPORT ; HEMATITE ; PHOTOCATALYST ; SEMICONDUCTORS |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000378715000053 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168298]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Li, Can |
| 作者单位 | 1.Chinese Acad Sci, Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian Natl Lab Clean Energy, State Key Lab Catalysis,Dalian Inst Chem Phys, Zhongshan Rd 457, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhiliang,Qi, Yu,Ding, Chunmei,et al. Insight into the charge transfer in particulate Ta3N5 photoanode with high photoelectrochemical performance[J]. CHEMICAL SCIENCE,2016,7(7):4391-4399. |
| APA | Wang, Zhiliang.,Qi, Yu.,Ding, Chunmei.,Fan, Dayong.,Liu, Guiji.,...&Li, Can.(2016).Insight into the charge transfer in particulate Ta3N5 photoanode with high photoelectrochemical performance.CHEMICAL SCIENCE,7(7),4391-4399. |
| MLA | Wang, Zhiliang,et al."Insight into the charge transfer in particulate Ta3N5 photoanode with high photoelectrochemical performance".CHEMICAL SCIENCE 7.7(2016):4391-4399. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。