TiO2-carbon nanotube composites for visible photocatalysts - Influence of TiO2 crystal structure

Guo, Mu Yao1; Liu, Fangzhou1; Leung, Yu Hang1; Ng, Alan Man Ching1,2; Djurisic, Aleksandra B.1; Chan, Wai Kin3

2013-09

10.1016/j.cap.2013.03.022

CURRENT APPLIED PHYSICS   影响因子和分区

1567-1739

1878-1675

We investigated the influence of the crystal structure of TiO2 and the use of different TiO2 precursors on the properties and photocatalytic activity of carbon nanotube (CNTs)-titania composites. We found that the crystal structure and properties of starting TiO2 nanomaterial significantly affected the effect of CNTs incorporation on the photocatalytic activity under simulated solar and visible light illumination (simulated solar illumination with UV-blocking filter). In case of significant photocatalytic activity under visible light illumination (anatase TiO2), likely due to the presence of native defects, composites exhibited lower activity under visible illumination only, but higher activity under simulated solar illumination. The opposite trends were observed for P25 (anatase + rutile) and rutile TiO2, where incorporation of CNTs resulted in a significant increase of photocatalytic activity under visible illumination. Thus, control over crystal structure and native defects is essential for the development of efficient visible light activated photocatalysts. (C) 2013 Elsevier B. V. All rights reserved.

Photocatalysis TiO2 Carbon nanotube composites

SCI ; EI

英语

其他

project RGC CRF[CityU6/CRF/08]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000322631400020

ELSEVIER SCIENCE BV

20134316880853

Carbon nanotubes ; Complexation ; Defects ; Light ; Oxide minerals ; Photocatalysis ; Photocatalytic activity ; Titanium dioxide

Minerals:482.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Crystal Lattice:933.1.1 ; Materials Science:951

PHYSICS

Web of Science

1.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
2.South Univ Sci & Technol China, Dept Phys, Shenzhen, Peoples R China
3.Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

Guo, Mu Yao,Liu, Fangzhou,Leung, Yu Hang,et al. TiO2-carbon nanotube composites for visible photocatalysts - Influence of TiO2 crystal structure[J]. CURRENT APPLIED PHYSICS,2013,13(7):1280-1287.

Guo, Mu Yao,Liu, Fangzhou,Leung, Yu Hang,Ng, Alan Man Ching,Djurisic, Aleksandra B.,&Chan, Wai Kin.(2013).TiO2-carbon nanotube composites for visible photocatalysts - Influence of TiO2 crystal structure.CURRENT APPLIED PHYSICS,13(7),1280-1287.

Guo, Mu Yao,et al."TiO2-carbon nanotube composites for visible photocatalysts - Influence of TiO2 crystal structure".CURRENT APPLIED PHYSICS 13.7(2013):1280-1287.