Authors: Jiang Yanyan Li Jinggang Sui Xiaotao Ning Guiling Wang Chengyu Gu Xiumei
Publish Date: 2007/02/01
Volume: 42, Issue: 1, Pages: 41-45
Abstract
Nanocrystalline spinel CuAl2O4 powders were prepared by solgel method from nitrate CuNO32·3H2O AlNO33·9H2O and complex C6H8O7·H2O Sintering was carried out at 400 500 600 700 800°C respectively for 2 h in air The XRD patterns started to appear CuAl2O4 peaks after sintering of 500°C and consist of only CuAl2O4 peaks as spinel crystal after sintering of 700°C The powders were analyzed by TEM and UVvis diffuse reflectance spectrum to be round about 10–30 nm in size and Eg=177 eV Photodegradation property of nanocrystalline CuAl2O4 powders was investigated by using methyl orange as model pollutant and mercury lamp λ400 nm as energy source The results indicated that CuAl2O4 powders sintered at 700°C had the excellent visible photocatalytic property Under the irradiation of visible light methyl orange could be degraded 97 in 120 min
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