High-crystalline and high-aspect-ratio hematite nanotube photoanode for efficient solar water splitting | |
Department | OSSO国家重点实验室 |
Feng CC(冯晨晨)1,2; Fu SR(符淑瑢)1,2; Wang W(王薇)1,2; Zhang YJ(张亚军)1; Bi YP(毕迎普)1 | |
The second department | 能源与环境纳米催化材料 |
2019-06-22 | |
Source Publication | APPLIED CATALYSIS B-ENVIRONMENTAL |
Volume | 257Issue:-Pages:117900 |
Abstract | Hematite (ɑ-Fe2O3) nanotube arrays with high aspect ratio and well-defined crystalline structures are highly attractive for photoelectrochemical water splitting. However, their design and fabrication remain a great challenge resulted from the poor thermal stability. Herein, we demonstrate that the high-crystalline Fe2O3 nanotube arrays with average length of 2 μm and high density of 2.5×107 tubes/cm2 could survive extended calcination temperatures up to ∼800 °C without any sintering. Owing to the well-oriented tubular structure, high light absorption and rich surface defects, this Fe2O3 nanotube photoanode exhibits a significantly improved PEC activity for water oxidation, and the photocurrent could be achieved up to 1.2 mA cm−2 at 1.23 V (vs. reversible hydrogen electrode, RHE). The decoration of FeOOH/NiOOH dual-cocatalysts not only caused a negative shift on onset-potential (170 mV), but also increased the photocurrent density up to 2.0 mA cm−2 (1.23 VRHE), which is the highest value among the reported hematite nanotube photoanodes. |
Keyword | Hematite Nanotube arrays High-temperature High aspect ratio Water oxidation |
Subject Area | 化学 |
MOST Discipline Catalogue | 理学 ; 理学::化学 |
DOI | 10.1016/j.apcatb.2019.117900 |
URL | 查看原文 |
Indexed By | SCI |
If | 14.229 |
Language | 英语 |
Funding Project | 光催化剂原子间光生电荷迁移及化学价键变化研究 ; 半导体光催化反应过程中电荷迁移直接观测研究 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/26025 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Bi YP(毕迎普) |
Affiliation | 1.State Key Laboratory for Oxo Synthesis & Selective Oxidation, National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, CAS, Lanzhou 730000, China 2.University of Chinese Academy of Sciences, Beijing 100049, China |
Recommended Citation GB/T 7714 | Feng CC,Fu SR,Wang W,et al. High-crystalline and high-aspect-ratio hematite nanotube photoanode for efficient solar water splitting[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,257(-):117900. |
APA | Feng CC,Fu SR,Wang W,Zhang YJ,&Bi YP.(2019).High-crystalline and high-aspect-ratio hematite nanotube photoanode for efficient solar water splitting.APPLIED CATALYSIS B-ENVIRONMENTAL,257(-),117900. |
MLA | Feng CC,et al."High-crystalline and high-aspect-ratio hematite nanotube photoanode for efficient solar water splitting".APPLIED CATALYSIS B-ENVIRONMENTAL 257.-(2019):117900. |
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1-s2.0-S092633731930(2120KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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