Synthesis of CdSE quantum-dots-sensitized TiO2 nanocomposites with visible-light photocatalytic activity

Yong, S. and Ke, J. and Zhao, Q. and Li, X.Y. and Zheng, N. and Xue, F. 2014. Synthesis of CdSE quantum-dots-sensitized TiO2 nanocomposites with visible-light photocatalytic activity, in Cong, H. and Yu, B. and Lu, X. (ed), Advanced Materials Research. 924: pp. 3-9.

Source Title

Advanced Materials Research

DOI

10.4028/www.scientific.net/AMR.924.3

ISBN

9783038350569

School

Department of Chemical Engineering

URI

http://hdl.handle.net/20.500.11937/4616

Collection

Curtin Research Publications

Abstract

CdSe Quantum Dots (QDs) sensitized TiO2 photocatylysts were synthesized by a facile sol-gel method at room temperature. The effects of CdSe QDs concentration on the properties of the photocatalysts were studied by XRD, BET, SEM, UV/vis. The photocatalytic performance was investigated by degrading methylene blue (MB) under halogen-tungsten lamp irradiation. The results revealed that the catalysts doped with CdSe QDs show large surface area, small crystal size and narrow band gap. The catalysts doped with 0.05% CdSe QDs possessed the best activity, and the degradation efficiency of methylene blue (MB) is up to 99.2% within 180 min.