PdO/TiO2 and Pd/TiO2 Heterostructured Nanobelts with Enhanced Photocatalytic Activity

被引：64

作者：

Zhou, Weijia ^{[1
,2
]}

Guan, Yu ^{[1
]}

Wang, Dongzhou ^{[1
]}

Zhang, Xinhai ^{[3
]}

Liu, Duo ^{[1
]}

Jiang, Huaidong ^{[1
]}

Wang, Jiyang ^{[1
]}

Liu, Xiaogang ^{[4
]}

Liu, Hong ^{[1
]}

Chen, Shaowei ^{[2
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Ctr Bio & Micro Nano Funct Mat, Jinan 250100, Peoples R China

[2] S China Univ Technol, Sch Environm & Energy, New Energy Res Ctr, Guangzhou 510006, Guangdong, Peoples R China

[3] South Univ Sci & Technol China, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

[4] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2014年 / 9卷 / 06期

基金：

中国国家自然科学基金;

关键词：

heterostructures; palladium; photochemistry; nanostructures; titanium; ENERGY-TRANSFER; TIO2; NANOPARTICLES; NANOWIRES; METAL; NANOSHEETS; REDUCTION; HYBRID;

D O I：

10.1002/asia.201301638

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Heterostructures play an important role not only in the manufacture of semiconductor devices, but also in the field of catalysis. Herein, we report the synthesis of PdO/TiO2 and Pd/TiO2 heterostructured nanobelts by means of a simple co-precipitation method, followed by a reduction process using surface-modified TiO2 nanobelts as templates. The as-obtained heterostructures were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, and UV/Vis diffuse reflectance spectroscopy. PdO and Pd nanoparticles with a size of about 1.3 and 1.6nm were assembled uniformly on the surface of TiO2 nanobelts, respectively. Compared with TiO2 nanobelts, PdO/TiO2 and Pd/TiO2 hybrid nanobelts exhibit enhanced photocatalytic activity upon UV and visible-light irradiation. Photoelectrochemical technology was used to study the heterostructure effect on enhanced photocatalytic activity. Our mechanistic investigation revealed that energy-band matching is the major factor in the observed enhancement of photocatalytic activity.

引用

页码：1648 / 1654

页数：7

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