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Fabrication of Hollow CoP/TiO x Heterostructures for Enhanced Oxygen Evolution Reaction
Author(s) -
Liang Zibin,
Zhou Wenyang,
Gao Song,
Zhao Ruo,
Zhang Hao,
Tang Yanqun,
Cheng Jinqian,
Qiu Tianjie,
Zhu Bingjun,
Qu Chong,
Guo Wenhan,
Wang Qian,
Zou Ruqiang
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201905075
Subject(s) - oxygen evolution , heterojunction , electrocatalyst , materials science , nanotechnology , nanocrystal , water splitting , chemical engineering , nanoparticle , fabrication , transition metal , catalysis , photocatalysis , electrode , electrochemistry , chemistry , optoelectronics , medicine , biochemistry , alternative medicine , pathology , engineering
Transition‐metal phosphides have flourished as promising candidates for oxygen evolution reaction (OER) electrocatalysts. Herein, it is demonstrated that the electrocatalytic OER performance of CoP can be greatly improved by constructing a hybrid CoP/TiO x heterostructure. The CoP/TiO x heterostructure is fabricated using metal–organic framework nanocrystals as templates, which leads to unique hollow structures and uniformly distributed CoP nanoparticles on TiO x . The strong interactions between CoP and TiO x in the CoP/TiO x heterostructure and the conductive nature of TiO x with Ti 3+ sites endow the CoP–TiO x hybrid material with high OER activity comparable to the state‐of‐the‐art IrO 2 or RuO 2 OER electrocatalysts. In combination with theoretical calculations, this work reveals that the formation of CoP/TiO x heterostructure can generate a pathway for facile electron transport and optimize the water adsorption energy, thus promoting the OER electrocatalysis.