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采用Sol-gel法合成的TiO2粉体制备了复合催化剂SO24-/TiO2/NCF。利用太阳光和250W自镇流荧光高压汞灯作为光源,采用悬浆体系,通过对照实验,研究了复合催化剂SO42-/TiO2/NCF与纯TiO2、SO42-/TiO2和TiO2/NCF对甲基橙水溶液的光催化脱色效果,初步考察了复合催化剂投加量、光源对脱色效果的影响。在实验条件下,太阳光激发的2g/L的复合催化剂的脱色速率最高,达0.1112min,其次为250W自镇流荧光高压汞灯激发的4g/L的复合催化剂的脱色速率,达0.04547min-1。
The composite catalyst SO24- / TiO2 / NCF was prepared by sol-gel method. Using sunlight and 250W self-ballasted fluorescent high-pressure mercury lamp as light source, the suspension system was used to study the effect of composite SO42- / TiO2 / NCF and pure TiO2, SO42- / TiO2 and TiO2 / NCF on methyl orange Aqueous solution of the photocatalytic decolorization effect of a preliminary study of the composite catalyst dosage, light source on the decolorization effect. Under the experimental conditions, the decolorization rate of 2g / L composite catalyst excited by sunlight was the highest, reaching 0.1112min, followed by the bleaching rate of 4g / L composite catalyst excited by 250W self-ballasted high pressure mercury lamp, reaching 0.04547min- 1.