TY - JOUR
T1 - Bi 2WO 6/SiO 2 photonic crystal film with high photocatalytic activity under visible light irradiation
AU - Sun, Songmei
AU - Wang, Wenzhong
AU - Zhang, Ling
AU - Xu, Jiehui
N1 - Funding Information:
This work is financially supported by the National Natural Science Foundation of China ( 51102262 , 50972155 ), National Basic Research Program of China (2010CB933503) and the Innovation Research of the Shanghai Institute of Ceramics ( Y11ZCE1E0G ).
PY - 2012/8/21
Y1 - 2012/8/21
N2 - Immobilized Bi 2WO 6 thin films were successfully synthesized by direct chemical deposition on SiO 2 photonic crystals. The as-prepared Bi 2WO 6/SiO 2 photonic crystal films exhibited excellent photocatalytic decomposition of RhB and phenol under visible light irradiation. Almost 99% of the RhB molecules were degraded within 60min and 64% of the phenol molecules were degraded within 2h along with the sharp decrease of total organic carbon (TOC) under visible light irradiation. Comparative studies indicated that the photocatalytic activity of the Bi 2WO 6/SiO 2 films is about 3 times higher than that of ordinary Bi 2WO 6 films under the same conditions. The transmission spectrum of the Bi 2WO 6/SiO 2 photonic crystal films exhibited an apparent transmission dip around 550nm originated from its photonic crystal structure. The different photocatalytic performance between the ordinary Bi 2WO 6 film and the Bi 2WO 6/SiO 2 photonic crystal film may be ascribed to their different film structures.
AB - Immobilized Bi 2WO 6 thin films were successfully synthesized by direct chemical deposition on SiO 2 photonic crystals. The as-prepared Bi 2WO 6/SiO 2 photonic crystal films exhibited excellent photocatalytic decomposition of RhB and phenol under visible light irradiation. Almost 99% of the RhB molecules were degraded within 60min and 64% of the phenol molecules were degraded within 2h along with the sharp decrease of total organic carbon (TOC) under visible light irradiation. Comparative studies indicated that the photocatalytic activity of the Bi 2WO 6/SiO 2 films is about 3 times higher than that of ordinary Bi 2WO 6 films under the same conditions. The transmission spectrum of the Bi 2WO 6/SiO 2 photonic crystal films exhibited an apparent transmission dip around 550nm originated from its photonic crystal structure. The different photocatalytic performance between the ordinary Bi 2WO 6 film and the Bi 2WO 6/SiO 2 photonic crystal film may be ascribed to their different film structures.
UR - http://www.scopus.com/inward/record.url?scp=84862640572&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84862640572&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2012.05.039
DO - 10.1016/j.apcatb.2012.05.039
M3 - Article
AN - SCOPUS:84862640572
SN - 0926-3373
VL - 125
SP - 144
EP - 148
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -