纳米二氧化钛与Fenton试剂光催化降解直接耐酸大红的研究

采用高压汞灯为光源,分别考察了纳米TiO2和Fenton试剂对4BS的降解效率。结果表明:纳米TiO2体系光催化降解4BS的效率好于Fenton试剂体系。同时,研究了影响纳米TiO2光催化降解4BS的主要影响因素。实验结果表明:初始pH=4时,光催化效率最佳;4BS脱色率随时间的变化呈现先快后慢的趋势;TiO2的最佳用量为1g/L。

The comparative studies of the degradation of 4BS with the nanometer TiO2 and with the Fenton reagent

Using the high pressure mercury lamp as the light resource,the degradation of 4BS has been studied with the nanometer TiO2 as the photochemical catalysis or with the Fenton reagent as the photochemical catalysis separately.The result indicated that the nanometer TiO2 system photochemical catalysis has better degradation efficiency than the Fenton reagent system.At the same time,the influence factors of the degradation with the nanometer TiO2 photochemical catalysis has also been studied.The result showed that: when the original PH is 4,the degradation efficiency is the best one;when the amount of TiO2 is 1g/L,the degradation efficiency is the best one;the rate of decolorization of 4BS is greater at the beginning than at the late time.