Hydrogenated Cagelike Titania Hollow Spherical Photocatalysts for Hydrogen Evolution under Simulated Solar Light Irradiation

被引：77

作者：

Wang, Yating ^{[1
,2
]}

Cai, Jinmeng ^{[1
,2
]}

Wu, Moqing ^{[1
,2
]}

Zhang, Hao ^{[1
,2
]}

Meng, Ming ^{[1
,2
]}

Tian, Ye ^{[1
,2
]}

Ding, Tong ^{[1
,2
]}

Gong, Jinlong ^{[1
,3
]}

Jiang, Zheng ^{[4
]}

Li, Xingang ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, Tianjin Key Lab Appl Catalysis Sci & Engn, Tianjin 300072, Peoples R China

[3] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 35期

基金：

中国国家自然科学基金;

关键词：

cagelike hollow spheres; multiple reflection; hydrogenation; photocatalysis; hydrogen evolution; water splitting; OXYGEN VACANCY; BLACK TITANIA; TIO2; WATER; NANOCOMPOSITES; NANOCRYSTALS; ABSORPTION; REDUCTION; DISORDER; BI2MOO6;

D O I：

10.1021/acsami.6b05777

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We synthesized the hydrogenated cagelike TiO2 hollow spheres through a facile sacrificial template method. After the hydrogenation treatment, the disordered surface layer and cagelike pores were generated on the shell of the hollow spheres. The spheres exhibit a high hydrogen evolution rate of 212.7 +/- 10.6 mu mol h(-1) (20 mg) under the simulated solar light irradiation, which is similar to 12 times higher than the hydrogenated TiO2 solid spheres and is similar to 9 times higher than the original TiO2 hollow spheres. The high activity results from the unique architectures and hydrogenation. Both the multiple reflection that was improved by the cagelike hollow structures and the red shift of the absorption edge that was induced by hydrogenation can enhance the ultraviolet and visible light absorption. In addition, the high concentration of oxygen vacancies, as well as the hydrogenated disordered surface layer, can improve the efficiency for migration and separation of generated charge carriers.

引用

页码：23006 / 23014

页数：9

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