Black Phosphorus/Platinum Heterostructure: A Highly Efficient Photocatalyst for Solar-Driven Chemical Reactions

被引：123

作者：

Bai, Licheng ^{[1
]}

Wang, Xin ^{[1
]}

Tang, Shaobin ^{[2
,3
]}

Kang, Yihong ^{[1
]}

Wang, Jiahong ^{[1
]}

Yu, Ying ^{[4
]}

Zhou, Zhang-Kai ^{[4
]}

Ma, Chao ^{[5
]}

Zhang, Xue ^{[1
]}

Jiang, Jun ^{[2
]}

Chu, Paul K. ^{[6
,7
]}

Yu, Xue-Feng ^{[1
]}

机构：

[1] Chinese Acad Sci, Shenzhen Inst Adv Technol, Ctr Biomed Mat & Interfaces, Shenzhen 518055, Peoples R China

[2] Univ Sci & Technol China, Sch Chem & Mat Sci, CAS Ctr Excellence Nanosci, Hefei Natl Lab Phys Sci,Microscale Collaborat Inn, Hefei 230026, Anhui, Peoples R China

[3] Gannan Normal Univ, Key Lab Organopharmaceut Chem Jiangxi Prov, Ganzhou 341000, Peoples R China

[4] Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[5] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[6] City Univ Hong Kong, Dept Phys, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China

[7] City Univ Hong Kong, Dept Mat Sci & Engn, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China

来源：

ADVANCED MATERIALS | 2018年 / 30卷 / 40期

基金：

中国博士后科学基金;

关键词：

2D materials; black phosphorus; heterostructures; photocatalysis; ultrasmall platinum nanoparticles; OXIDATION; HYDROGENATION; SIZE; PHOTODETECTOR; NANOPARTICLES; MECHANISMS; OXYGEN;

D O I：

10.1002/adma.201803641

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A 2D black phosphorus/platinum heterostructure (Pt/BP) is developed as a highly efficient photocatalyst for solar-driven chemical reactions. The heterostructure, synthesized by depositing BP nanosheets with ultrasmall (approximate to 1.1 nm) Pt nanoparticles, shows strong Pt-P interactions and excellent stability. The Pt/BP heterostructure exhibits obvious P-type semiconducting characteristics and efficient absorption of solar energy extending into the infrared region. Furthermore, during light illumination, accelerated charge separation is observed from Pt/BP as manifested by the ultrafast electron migration (0.11 ps) detected by a femtosecond pump-probe microscopic optical system as well as efficient electron accumulation on Pt revealed by in situ X-ray photoelectron spectroscopy. These unique properties result in remarkable performance of Pt/BP in typical hydrogenation and oxidation reactions under simulated solar light illumination, and its efficiency is much higher than that of other common Pt catalysts and even much superior to that of conventional thermal catalysis. The 2D Pt/BP heterostructure has enormous potential in photochemical reactions involving solar light and the results of this study provide insights into the design of next-generation high-efficiency photocatalysts.

引用

页数：7

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