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

共 41 条

[11] Enhancement of Ethanol Vapor Sensing of TiO2 Nanobelts by Surface Engineering [J].

Hu, Peiguang ;

Du, Guojun ;

Zhou, Weijia ;

Cui, Jingjie ;

Lin, Jianjian ;

Liu, Hong ;

Liu, Duo ;

Wang, Jiyang ;

Chen, Shaowei .

ACS APPLIED MATERIALS & INTERFACES, 2010, 2 (11) :3263-3269

[12]

Huang XQ, 2011, NAT NANOTECHNOL, V6, P28, DOI [10.1038/nnano.2010.235, 10.1038/NNANO.2010.235]

[13] Nanocontact-induced catalytic activation in palladium nanoparticles [J].

Jiang, Changlong ;

Ranjit, Sadananda ;

Duan, Zhongyu ;

Zhong, Yu Lin ;

Loh, Kian Ping ;

Zhang, Chun ;

Liu, Xiaogang .

NANOSCALE, 2009, 1 (03) :391-394

[14] Fabrication of Highly-Ordered TiO2 Nanotube Arrays and Their Use in Dye-Sensitized Solar Cells [J].

Kang, Tae-Sik ;

Smith, Adam P. ;

Taylor, Barney E. ;

Durstock, Michael F. .

NANO LETTERS, 2009, 9 (02) :601-606

[15] Enhanced gas sensing by individual SnO2 nanowires and nanobelts functionalized with Pd catalyst particles [J].

Kolmakov, A ;

Klenov, DO ;

Lilach, Y ;

Stemmer, S ;

Moskovits, M .

NANO LETTERS, 2005, 5 (04) :667-673

[16] Palladium Oxide Nanoparticles on Nitrogen-Doped Titanium Oxide: Accelerated Photocatalytic Disinfection and Post-Illumination Catalytic "Memory" [J].

Li, Qi ;

Li, Yin Wai ;

Wu, Pinggui ;

Xie, Rongcai ;

Shang, Jian Ku .

ADVANCED MATERIALS, 2008, 20 (19) :3717-+

[17] Enhanced visible-light absorption from PdO nanoparticles in nitrogen-doped titanium oxide thin films [J].

Li, Qi ;

Liang, Wei ;

Shang, Jian Ku .

APPLIED PHYSICS LETTERS, 2007, 90 (06)

[18] Mesoporous CO3O4 nanowire arrays for lithium ion batteries with high capacity and rate capability [J].

Li, Yanguang ;

Tan, Bing ;

Wu, Yiying .

NANO LETTERS, 2008, 8 (01) :265-270

[19] Growth of Oriented Single-Crystalline Rutile TiO2 Nanorods on Transparent Conducting Substrates for Dye-Sensitized Solar Cells [J].

Liu, Bin ;

Aydil, Eray S. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (11) :3985-3990

[20] In situ loading of ultra-small Cu2O particles on TiO2 nanosheets to enhance the visible-light photoactivity [J].

Liu, Lichen ;

Gu, Xianrui ;

Sun, Chuanzhi ;

Li, Hao ;

Deng, Yu ;

Gao, Fei ;

Dong, Lin .

NANOSCALE, 2012, 4 (20) :6351-6359

← 1 2 3 4 5 →