Imaging Science and Photochemistry ›› 2001, Vol. 19 ›› Issue (2): 109-115.DOI: 10.7517/j.issn.1674-0475.2001.02.109

Previous Articles     Next Articles

THE RELATION OF PHOTOCATALYTIC ACTIVITY OF PEROVSKTIE (ABO3) TYPE OXIDE AND D-ELECTRON STRUCTURE OF ION B

SANG Li-xia, FU Xi-xian, BAI Shu-lin, YANG Qiu-hua, WANG Jun-zhen, ZENG Shu-lan   

  1. Department of Chemistry, Tianjin University, Tianjin 300072, P.R. China
  • Received:2000-09-11 Revised:2000-12-01 Online:2001-05-20 Published:2001-05-20

Abstract: The d-electron structure of ion B in perovskite(ABO3) type oxide has the key role on the binding energy of B-O and the charge-transfer energy(ΔCT) between O2p and B3d, so it has an important influence on the photocatalytic activity of ABO3. In this paper, the species LaBO3(B=Ti-Co) were prepared by the mixed oxide method and the citrate complex method. By analyzing the photocatalytic degradation experiment and their photo acoustic spectra, the results show that photocatalytic activity of LaBO3 increases with the increasing of d-electron number of ion B.

Key words: perovskite type oxide, photocatalytic activity, d-electron structure, charge-transfer energy(ΔCT)

CLC Number: