TY - JOUR
T1 - Coverage of carbon nanotubes with titania nanoparticles for the preparation of active titania-based photocatalysts
AU - Takenaka, Sakae
AU - Arike, Takafumi
AU - Matsune, Hideki
AU - Kishida, Masahiro
N1 - Funding Information:
The present work was supported by a Grant-in-Aid of Scientific Research (B) (No. 23360359 ) from the Ministry of Education, Culture, Science, Sports and Technology of Japan .
PY - 2012/8/21
Y1 - 2012/8/21
N2 - TiO 2 nanoparticles were deposited on carbon nanotubes (CNTs) to improve their photocatalytic activity. The outer surface of the CNTs could be uniformly covered with TiO 2 nanoparticles using the hydrolysis of titanium tetraisopropoxide (Ti(O iPr) 4) in the presence of urea or glycine amide. The urea and glycine amide acted as linker molecules between the TiO 2 nanoparticles and the CNT surfaces. The TiO 2-coated CNTs showed a higher catalytic activity for the photodegradation of organic molecules than TiO 2 alone. The addition of the CNTs to the TiO 2 photocatalytic system retarded the recombination of the electron-hole pairs generated in the photo-irradiated TiO 2. When Pt metal particles were inserted in the cavities of the CNTs in the TiO 2-coated CNT catalyst system, further improvements in the photocatalytic activity were observed. The TiO 2-coated CNTs with Pt metal particles displayed a unique catalytic performance in the photocatalytic degradation of organic impurities in water.
AB - TiO 2 nanoparticles were deposited on carbon nanotubes (CNTs) to improve their photocatalytic activity. The outer surface of the CNTs could be uniformly covered with TiO 2 nanoparticles using the hydrolysis of titanium tetraisopropoxide (Ti(O iPr) 4) in the presence of urea or glycine amide. The urea and glycine amide acted as linker molecules between the TiO 2 nanoparticles and the CNT surfaces. The TiO 2-coated CNTs showed a higher catalytic activity for the photodegradation of organic molecules than TiO 2 alone. The addition of the CNTs to the TiO 2 photocatalytic system retarded the recombination of the electron-hole pairs generated in the photo-irradiated TiO 2. When Pt metal particles were inserted in the cavities of the CNTs in the TiO 2-coated CNT catalyst system, further improvements in the photocatalytic activity were observed. The TiO 2-coated CNTs with Pt metal particles displayed a unique catalytic performance in the photocatalytic degradation of organic impurities in water.
UR - http://www.scopus.com/inward/record.url?scp=84863487802&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863487802&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2012.06.013
DO - 10.1016/j.apcatb.2012.06.013
M3 - Article
AN - SCOPUS:84863487802
SN - 0926-3373
VL - 125
SP - 358
EP - 366
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -