Catalytic Activity of Biomorphic α-MoO(3) in the Degradation of Methyl Violet Dye |
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Authors: | Zhenyu Diao Fung-Luen Kwong Jia Li Jiabiao Lian Kwing-To Lai Dickon H L Ng |
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Institution: | Department of Physics, The Chinese University of Hong Kong , Shatin, Hong Kong, China . |
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Abstract: | A network of fibers comprising orthorhombic molybdenum trioxide (α-MoO(3)) crystals were synthesized using paper as template via a biomorphic approach. The template was completely removed by annealing the sample at 600°C for 5?min. Monoclinic MoO(3) was formed and consequently converted into orthorhombic α-MoO(3) after prolonged annealing. Three milligrams of the biomorphic α-MoO(3) could degrade up to 90% of a methyl violet aqueous solution with a concentration of 20?mg/L under normal visible light. The size of the α-MoO(3) grains and the porosity of the biomorphic sample affected catalytic performance. |
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