A new photocatalyst based on Co(CO3)0.5(OH)•0.11H2O/Bi2WO6 nanocomposites for high-efficiency cocatalyst-free O2 evolution

被引：64
作者：
He, Bin [1 ]
Liu, Huanhuan [1 ]
Lin, Zheng [2 ]
Yan, Lei [1 ]
Ning, Jiqiang [3 ]
Zhong, Yijun [1 ]
Zheng, Changcheng [4 ]
Zhang, Ziyang [3 ]
Hu, Yong [1 ]
机构：
[1] Zhejiang Normal Univ, Dept Chem, Minist Educ Adv Catalysis Mat, Key Lab, Jinhua 321004, Peoples R China
[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[3] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Vacuum Interconnected Nanotech Workstn, Suzhou 215123, Peoples R China
[4] Xian Jiaotong Liverpool Univ, Dept Math Sci, Math & Phys Ctr, Suzhou 215123, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2019年 / 359卷
关键词：
Co(CO3)(0.5)(OH)center dot 0.11H(2)O; Bi2WO6; Nanocomposite; Photocatalytic O-2 evolution; Cocatalyst-free; LAYERED DOUBLE HYDROXIDE; OXYGEN EVOLUTION; HYDROGEN-PRODUCTION; WATER OXIDATION; NANOSHEETS; MECHANISM; CO3O4; ELECTROCATALYST; HETEROJUNCTION; CONSTRUCTION;
D O I：
10.1016/j.cej.2018.11.094
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The practical application of photocatalytic water splitting is essentially limited by the slow kinetic nature of the water oxidation process. Therefore, it is highly desirable but challenging to explore a low-cost and high-efficiency water oxidation catalyst for the aim of commercialization and industrialization. We herein report the first-time synthesis of a novel and high-efficiency visible-light-driven photocatalyst composed of flower-like Co (CO3)(0.5)(OH)center dot 0.11H(2)O (CCO) nanowires and Bi2WO6 (BWO) nanosheets, i.e. CCO/BWO nanocomposite, via a facile hydrothermal method. Without utilizing any additional cocatalyst, the composite of CCO/ BWO in 30% weight ratio exhibits extraordinarily high photoactivity and photostability towards O-2 evolution, achieving an average O-2 generation rate of 953 mu mol h(-1) g(-1) under visible-light irradiation (lambda > 420 nm).
引用
收藏
页码：924 / 932
页数：9
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