Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (5): 385-390. Previous Articles     Next Articles

Original Articles

钙钛矿型LaxSr1-xNi1-yCoyO3光电催化活性研究

林生岭1 2,徐绍芬2,王俊德*1,谢春生2,袁爱华2,韩光范2,张琳1,张黎明1,李燕1,严豸明2   

  1. (1南京理工大学化工学院 南京 210014)
    (2江苏科技大学材料科学与工程学院 镇江 212003)
  • 投稿日期:2004-04-16 修回日期:2004-11-08 发布日期:2010-12-10
  • 通讯作者: 王俊德

Study on Photo-Electro Catalytic Activity of Perovskite Type Oxides LaxSr1-xNi1-yCoyO3

LIN Sheng-Ling1,2, XU Shao-Fen2, WANG Jun-De*1, XIE Chun-Sheng2, YUAN Ai-Hua2, HAN Guang-Fan2, ZHANG Lin1, ZHANG Li-Ming1,LI Yan1,YAN Zhi   

  1. (1 School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210014)
    (2 School of Material Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003)
  • Received:2004-04-16 Revised:2004-11-08 Published:2010-12-10
  • Contact: WANG Jun-De

A new combustion synthesis method, the glycine-nitrate process, has been used to prepare complex oxide ceramic powders of LaxSr1-xNi1-yCoyO3. A series of perovskite oxides were characterized by XRD. The cyclic voltammetry curves of oxygen reduction and oxygen release were obtained with and without flowing oxygen. The result shows that oxygen electrodes have bifunctional catalysis activity but it is not completely reversible. The degradation experiment of various water-soluble dyestuff and five-component mixed dyestuff was performed by photo catalytic methods. A fluorescent Hg lamp was used as irradiation source. The catalytic activity of LaxSr1-xNi1-yCoyO3 was studied with UV-Vis, IR and artificial nerve network and spectrophotometry. The results show that the complex oxides of LaxSr1-xNi1-yCoyO3 (x=0.7, 0.9; y=0.3, 0.75) presented evident photo catalytic activity. The LaxSr1-xNi1-yCoyO3 showed stronger activities than La0.7Sr0.3NiO3, and this is attributed to the unique electronic structure of the ion B (Ni3+, Co3+). The results showed that adding Co2+ can sharply improve the photo-electro catalytic activity of LaxSr1-x- Ni1-yCoyO3.

Key words: LaxSr1-xNi1-yCoyO3, bifunctional oxygen electrode, photo catalytic activity, water-soluble dyestuff, artificial neural network