Photocatalytic H2 production activity of TiO2 modified by inexpensive Cu(OH)2 cocatalyst

被引:34
作者
She, Houde [2 ,4 ]
Ma, Xiong [2 ]
Chen, Kaiyi [1 ]
Liu, Hui [3 ]
Huang, Jingwei [2 ]
Wang, Lei [2 ]
Wang, Qizhao [1 ,2 ,4 ]
机构
[1] Changan Univ, Sch Environm Sci & Engn, Xian 710064, Peoples R China
[2] Northwest Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China
[3] Cent South Univ, Sch Met & Environm, Chinese Natl Engn Res Ctr Control & Treatment Hea, Changsha 410083, Peoples R China
[4] Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China
基金
中国国家自然科学基金;
关键词
Photocatalysis; Nanosheets; Hydrogen production; Cu(OH)(2); TiO2; HYDROGEN-PRODUCTION; PERFORMANCE; CO2; DEGRADATION; COMPOSITE; EVOLUTION; CDS; NANOSTRUCTURES; NANOCOMPOSITES; INTEGRATION;
D O I
10.1016/j.jallcom.2019.153239
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Uniformly dispersed TiO2 nanosheets were synthesized and thereafter modified by Cu(OH)(2) as a cocatalyst. The successful preparation of the composite catalyst was confirmed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The composite catalyst was applied to the photocatalytic hydrogen production. When the content of Cu(OH)(2) reaches to 2%, the composite catalyst 2Cu-TiO2 (2%Cu(OH)(2) -TiO2) has the best photocatalytic hydrogen production activity, in which hydrogen production rate is 8.3 times that of pure TiO2. Due to the electron transfer from TiO2 nanosheets to the cocatalyst, Cu(OH)(2), the severe recombination of photoinduced carriers can be greatly reduced, giving the impressive enhancement in photocatalytic hydrogen evolution. (C) 2019 Elsevier B.V. All rights reserved.
引用
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页数:8
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