燃烧法制备铁酸镍复合氧化物及光催化研究

Preparation of Nickel Ferrite Composite Oxide with Combustion and Its Photocatalytic Application

李秀萍 袁 哲 宫晓杰 夏宝森 张轩瑞 赵荣祥

Li Xiuping Yuan Zhe Gong Xiaojie Xia Baosen Zhang Xuanrui Zhao Rongxiang

(辽宁石油化工大学,辽宁抚顺113001)

Liaoning Shihua University, Fushun Liaoning 113001, China

关键词: 铁酸镍, 光催化, 燃烧法

In this paper, ascorbic acid as combustion agent, composite oxides of nickel ferrite were prepared by combustion method. The optimal molar ratio of ferric nitrate to nickel nitrate was determined by XRD. The UV absorbance properties of composite were analyzed by UV spectra. The morphology of composites was characterized by scanning electron microscopy. The photocatalytic properties were studied using methylene blue as the degradation substrate and composite as catalyst. The experiment showed important effect of amount of catalyst, the pH value of the solution, the amount of hydrogen peroxide and irradiation time of the photocatalyst. The optimal photocatalytic condition is: dose of catalyst 20 mg, pH at 6, and hydrogen peroxide 6 mL. The results indicate that the nickel ferrite with molar ratio of nickel nitrate, ferric nitrateand ascorbic acid of 1:2:1 is photocatalytic effective under UV and visible light. Moreover, the nickel ferrite with molar ratio of nickel nitrate, ferric nitrateand ascorbic acid of 2:1:1 and 1:3:1 are photocatalytic effective under UV light.

辽宁省博士科研启动基金(2015020142)。

10.3696/j.issn.1672-6952.2016.02.003