Chemical Journal of Chinese Universities ›› 2020, Vol. 41 ›› Issue (6): 1345-1351.doi: 10.7503/cjcu20190644

• Physical Chemistry • Previous Articles     Next Articles

Influential Factors of La-doped Calcium Titanate for Photocatalytic H2 Evolution Under Visible Light

CHENG Rongmin1,XU Hong2,SHAN Ruiping2,ZHAN Conghong1,*()   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, China
    2. College of Materials Science and Engineering, Jilin University, Changchun 130022, China
  • Received:2019-12-10 Online:2020-06-10 Published:2020-04-15
  • Contact: Conghong ZHAN E-mail:zhanch@jlu.edu.cn
  • Supported by:
    † Natural Science Foundation of Jilin Province, China(20170101103JC)

Abstract:

For photocatalytic H 2 evolution from water splitting, perovskite photocatalyst Ca 0.99La 0.01TiO 3 was prepared by sol-gel method with citric acid as complexing agent. The influence of N doping on photocatalytic activity was investigated. The hydrogen-producing capacity of Ca 0.99La 0.01TiO 3- xN x with different Pt loading and different kinds of sacrificial agents was also investigated under visible light irradiation. The photocatalytic materials were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), UV-Vis diffuse reflectance spectroscopy(UV-Vis DRS). The results show that under the irradiation of visible light, the perovskite photocatalyst Pt-Ca 0.99La 0.01TiO 3- xN x with 1% Pt-loading has the highest photocatalytic activity of hydrogen production from water when Na 2SO 3/Na 2S is used as the sacrificial agent. Pt-loading promotes photocatalytic reaction and improves photocatalytic activity.

Key words: Photocatalysis, Perovskite, Pt-loading, Sacrificial agent

CLC Number: