Fabrication of 3D Mesoporous Black TiO2/MoS2/TiO2 Nanosheets for Visible-Light-Driven Photocatalysis

被引:165
作者
Liu, Xuefeng [1 ]
Xing, Zipeng [1 ]
Zhang, Hang [1 ]
Wang, Wenmei [1 ]
Zhang, Yan [1 ]
Li, Zhenzi [2 ]
Wu, Xiaoyan [2 ]
Yu, Xiujuan [1 ]
Zhou, Wei [1 ]
机构
[1] Heilongjiang Univ, Minist Educ PR China, Key Lab Funct Inorgan Mat Chem, Dept Environm Sci,Sch Chem & Mat Sci, 74 Xuefu Rd, Harbin 150080, Heilongjiang Pr, Peoples R China
[2] Harbin Med Univ, Dept Epidemiol & Biostat, 194 Xuefu Rd, Harbin 150040, Heilongjiang Pr, Peoples R China
基金
中国国家自然科学基金;
关键词
heterojunction; hydrogen evolution; mesoporous black titania; photocatalysis; visible-light-driven; HYDROGEN EVOLUTION; ANATASE TIO2; H-2; EVOLUTION; MOS2; PERFORMANCE; TITANIA; WATER; COCATALYST; NANOTUBES; GRAPHENE;
D O I
10.1002/cssc.201600170
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A novel 3D mesoporous black TiO2 (MBT)/MoS2/MBT sandwich-like nanosheet was successfully fabricated using a facile mechanochemical process combined with an in situ solid-state chemical reduction approach, followed by mild calcination (350 degrees C) under an argon atmosphere. The MBT/MoS2/MBT exhibits a 3D sandwich-like nanosheet structure and heterojunctions are formed at the interfaces between MoS2 and black TiO2. The significantly narrowed band gap of MBT/MoS2/MBT is attributed to the introduction of MoS2 and the formed Ti3+ species in the frameworks. The visible-light photocatalytic degradation rate of methyl orange and the hydrogen production rate are as high as 89.86% and 0.56 mmol h(-1)g(-1), respectively. The introduction of MoS2 and Ti3+ in the frameworks favors the visible-light absorption and the separation of photogenerated charges, and the 3D sandwich-like heterojunction structure facilitates the transfer of photogenerated charges.
引用
收藏
页码:1118 / 1124
页数:7
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