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Citation: LOU Xiang-Dong, ZHAO Xiao-Hua, CHENG Qing-Tang, LU Yan. Preparation of La-Ni Mixed Oxide and Photocatalytic Property[J]. Chinese Journal of Applied Chemistry, ;2004, 21(2): 144-149. shu

Preparation of La-Ni Mixed Oxide and Photocatalytic Property

1.
College of Chemistry and Environmental Sciences, He'nan Normal University, Key Laboratory of Environmental Engineering of He'nan Province, Xinxiang 453002

Corresponding author: LOU Xiang-Dong,
Received Date: 26 April 2003
Available Online: 14 November 2003
Fund Project: 河南省自然科学基金资助项目(0211062500) (0211062500)

The lanthanum-nickel mixed oxides were prepared by chemical coprecipitation, sol-gel method and solid state reaction method. Their thermal stability and microstructure were analyzed by TG-DTA, XRD and TEM. The effects of preparation method, illumination, aging time and dosage of photocatalyst on the efficiency of photo degradation of reactive dyes were investigated. The results revealed that 90.0% reactive turquoise KGL(20 mg/L) could be degraded with 150 mg mixed oxides prepared by three methods after illumination for 120 min, and it was above 79.6% without illumination; above 83.1% reactive brilliant blue KNR(reactive dark GR and reactive brilliant red K2G) could be degraded with 100 mg mixed oxides prepared by chemical coprecipitation and solid state reaction methods after illumination for 20 min, and it was above 38.1% without illumination; the degradation degrees of KNR, GR, K2G were above 38.1% with 100 mg mixed oxides prepared by sol-gel method after illumination. The dyes didn't degradate by mixed oxides without illumination. The aged photocatalyst showed a higher photocatalytic activity.
- La-Ni mixed oxide,
- preparation,
- reactive dye,
- photocatalytic property
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