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Preparation of Bi2O3 with plate-like and its photocatalytic property |
ZHANG Wen-wen, CHEN Dong-hui |
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China |
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Abstract Bi2O3 photocatalyst with plate-like morphology was successfully prepared by the method of chemical precipitation which using Bi(NO3)3·5H2O as the source of bismuth, HNO3 as solvent and HTMA as precipitants, respectively. The morphology, thickness, crystal form and specific surface area of the as-prepared Bi2O3 were characterized by SEM, XRD and BET respectively. Furthermore, the photocatalytic performance of the materials was tested by UV-Vis diffuse reflection and photochemical reaction apparatus. The results showed that the obtained Bi2O3 photocatalyst with plate-like morphology has good morphology, uniform thickness, a-Bi2O3, stronger absorbent for visible-light and exhibits good photocatalytic property. Under the simulated visible light of 300W, the degradation rate of tetracycline wastewater can be reached to 82.6% after 3.0h, which is much higher than that of commercially nanoparticles Bi2O3.
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Received: 06 September 2018
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