【摘要】 通过水热法制备了氟掺杂A-TiO₂粉末，以甲基橙溶液为污染物，探讨甲基橙的初始浓度C₀、掺氟A-TiO₂用量m、掺氟量χ（摩尔分数）等因素在可见光照下对甲基橙催化降解反应的动力学影响。结果表明：在最佳条件(60 W白炽灯照射、C₀ =0.02 g/L、pH=6、m=0.3 g/L,χ=5%、21℃、t=40 min)下，光催化降解甲基橙的过程为动力学一级反应。更多还原

【Abstract】 F-doped A-TiO₂ powders were prepared by a hydrothermal method. Methyl orange solution was used as the contaminated liquid to investigate the kinetic effects of the initial concentration of methyl orange, C0, the amount of fluorine-doped A-TiO2, m, and the amount of fluorine doping, χ（mole fraction）, on the catalytic degradation reaction of methyl orange under visible light. Experimental results show that under the optimal conditions（methyl orange’s initial concentration C₀=0.02 g/L, pH=6, m=0.3 g/L, χ =5%, 60 W incandescent lamp irradiation, reaction time t =40 min at 21 ℃）, the photo-catalytic degradation of methyl orange is the first-order kinetics reaction.更多还原