机构地区: 浙江大学机械与能源工程学院能源清洁利用国家重点实验室
出 处: 《工程热物理学报》 2013年第12期2409-2412,共4页
摘 要: 本文以500 W高压汞灯作为紫外光源,通过连续照射纳米TiO_2催化剂薄膜催化降解气相1,2-二氯苯(1,2-DCBz),评价纳米TiO_2催化剂的光催化氧化活性,考察包括反应气氛、反应时间、1,2-DCBz初始浓度以及单位面积镀膜量在内的主要参数对光催化降解过程的影响。通过动力学拟合计算,在纳米TiO_2薄膜表面光催化降解气相1,2-DCBz符合一级反应动力学规律。 In order to evaluate the photocatalytic activity of the nano-TiO2, gaseous 1,2- dichlorobenzene (1,2-DCBz) was photocatalytically decomposed over nano-TiO2 films under con- tinuous UV light irradiation. The effects of numerous experimental parameters, including reaction atmosphere, reaction duration, inlet concentration of 1,2-DCBz and catalyst coating weight unit area, were studied in this paper. Besides, the kinetic calculation results suggested that photocatalytic decomposition of gaseous 1,2-DCBz on nano-TiO2 accords with the first-order reaction kinetics rule.
领 域: [环境科学与工程]