生物形态α-MoO(3)对甲基紫染料降解的催化活性
Catalytic Activity of Biomorphic α-MoO(3) in the Degradation of Methyl Violet Dye.
作者信息
Diao Zhenyu, Kwong Fung-Luen, Li Jia, Lian Jiabiao, Lai Kwing-To, Ng Dickon H L
机构信息
Department of Physics, The Chinese University of Hong Kong , Shatin, Hong Kong, China .
出版信息
Environ Eng Sci. 2012 Sep;29(9):860-865. doi: 10.1089/ees.2011.0184.
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.
采用生物形态法，以纸张为模板合成了由正交晶系三氧化钼（α-MoO₃）晶体组成的纤维网络。通过在600°C下对样品进行5分钟退火，模板被完全去除。形成了单斜晶系的MoO₃，经过长时间退火后最终转变为正交晶系的α-MoO₃。三毫克的生物形态α-MoO₃在正常可见光下可降解浓度为20毫克/升的甲基紫水溶液达90%。α-MoO₃晶粒的尺寸和生物形态样品的孔隙率影响催化性能。
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