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A Unique Ternary Semiconductor–(Semiconductor/Metal) Nano‐Architecture for Efficient Photocatalytic Hydrogen Evolution
Author(s) -
Zhuang TaoTao,
Liu Yan,
Sun Meng,
Jiang ShenLong,
Zhang MingWen,
Wang XinChen,
Zhang Qun,
Jiang Jun,
Yu ShuHong
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201505442
Subject(s) - nanorod , photocatalysis , ternary operation , materials science , semiconductor , heterojunction , nanotechnology , photoelectric effect , nanoparticle , nanostructure , hydrogen production , hydrogen , optoelectronics , catalysis , chemistry , computer science , biochemistry , organic chemistry , programming language
It has been a long‐standing demand to design hetero‐nanostructures for charge‐flow steering in semiconductor systems. Multi‐component nanocrystals exhibit multifunctional properties or synergistic performance, and are thus attractive materials for energy conversion, medical therapy, and photoelectric catalysis applications. Herein we report the design and synthesis of binary and ternary multi‐node sheath hetero‐nanorods in a sequential chemical transformation procedure. As verified by first‐principles simulations, the conversion from type‐I ZnS‐CdS heterojunction into type‐II ZnS‐(CdS/metal) ensures well‐steered collections of photo‐generated electrons at the exposed ZnS nanorod stem and metal nanoparticles while holes at the CdS node sheaths, leading to substantially improved photocatalytic hydrogen‐evolution performance.