Premium
PdO/TiO 2 and Pd/TiO 2 Heterostructured Nanobelts with Enhanced Photocatalytic Activity
Author(s) -
Zhou Weijia,
Guan Yu,
Wang Dongzhou,
Zhang Xinhai,
Liu Duo,
Jiang Huaidong,
Wang Jiyang,
Liu Xiaogang,
Liu Hong,
Chen Shaowei
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201301638
Subject(s) - photocatalysis , x ray photoelectron spectroscopy , heterojunction , materials science , transmission electron microscopy , diffuse reflectance infrared fourier transform , chemical engineering , spectroscopy , nanotechnology , precipitation , visible spectrum , catalysis , semiconductor , optoelectronics , chemistry , biochemistry , physics , quantum mechanics , meteorology , engineering
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/TiO 2 and Pd/TiO 2 heterostructured nanobelts by means of a simple co‐precipitation method, followed by a reduction process using surface‐modified TiO 2 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 1.6 nm were assembled uniformly on the surface of TiO 2 nanobelts, respectively. Compared with TiO 2 nanobelts, PdO/TiO 2 and Pd/TiO 2 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.