Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production
文献类型：期刊论文
| 作者 | Cai, Xiaoyan1,2; Yang, Songqiu3; Han, Keli3; Zhang, Junying2; Mao, Liang1,2 |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 242页码:441-448 |
| 关键词 | Black phosphorus Noble metal-free Near-Infrared light Photocatalytic hydrogen production Charge transfer dynamics |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2018.10.007 |
| 通讯作者 | Zhang, Junying(zjy@buaa.edu.cn) |
| 英文摘要 | Wide-bandgap semiconductor photocatalysts such as La2Ti2O7 (LTO) are stable but can only work under ultraviolet (UV) light, while narrow-bandgap semiconductor photocatalysts such as CdS and black phosphorus (BP) with broad-wavelength range absorption generally have low stability and high electron-hole pairs recombination rate. In this work, ternary heterostructure composing of BP quantum dots (QDs), CdS nanoparticles (NPs) and LTO nanosteps (NSP) is developed for the first time to make full use of their respective advantages, which offers a promising approach to achieving desired stability and solar energy harvesting. As an effective noble metal-free photocatalyst, BP-CdS-LTO composite generates H-2 from Na2S/Na2SO3 aqueous solution with a rate of 0.96 mmol g(-1) h(-1) under solar light irradiation, and 0.26 mmol g(-1) h(-1) in the near-infrared (NIR) range. In this system, BP serves as a NIR photosensitizer; CdS not only contributes to visible light absorption but also bonds with BP to promote the transmission of photogenerated charge carriers; LTO absorbs UV light as well as provides reaction sites for photoinduced electrons. Femtosecond transient absorption spectroscopy is used to elucidate the kinetics of the injection of photogenerated electrons from BP QDs to CdS NPs and finally to LTO. This work provides deep insight into charge transfer between semiconductors with different band alignments, which can open a new avenue for more rationally designing heterostuctured photocatalysts for H-2 production. |
| WOS关键词 | HYDROGEN-PRODUCTION ; ELECTRON-TRANSFER ; PHOSPHORUS ; GENERATION ; PHOTOANODE ; SEPARATION ; NANOWIRES ; GAP |
| 资助项目 | National Natural Science Foundation of China[51472013] ; National Natural Science Foundation of China[51672106] ; National Natural Science Foundation of China[21533010] ; National Key Research and Development Program of China[2017YFA0204800] |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000450135000046 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/166530]  |
| 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 | Zhang, Junying |
| 作者单位 | 1.China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Jiangsu, Peoples R China 2.Beihang Univ, Dept Phys, Minist Educ, Key Lab Micronano Measurement Manipulat & Phys, Beijing 100191, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Xiaoyan,Yang, Songqiu,Han, Keli,et al. Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,242:441-448. |
| APA | Cai, Xiaoyan,Yang, Songqiu,Han, Keli,Zhang, Junying,&Mao, Liang.(2019).Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production.APPLIED CATALYSIS B-ENVIRONMENTAL,242,441-448. |
| MLA | Cai, Xiaoyan,et al."Black phosphorus-CdS-La2Ti2O7 ternary composite: Effective noble metal-free photocatalyst for full solar spectrum activated H-2 production".APPLIED CATALYSIS B-ENVIRONMENTAL 242(2019):441-448. |
入库方式： OAI收割
来源：大连化学物理研究所
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