二氧化钛光催化降解硝基苯废水

用紫外灯作为光源,以锐钛型TiO2为催化剂降解硝基苯。探讨了光照时间、初始pH值、初始浓度、催化剂用量和载铜TiO2复合催化剂对光催化降解的影响。结果表明,TiO2用量为3.0 g/L,pH为3,硝基苯初始浓度为40.6 mg/L,室温条件下,光照6 h硝基苯降解率为80.6%;掺杂1%Cu2+(摩尔分数)的TiO2复合催化剂,光催化活性高于纯TiO2,其光催化降解率较TiO2提高14.5%。

Photocatalytic degradation of nitrobenzene-containing wastewater by TiO2

TiO2(anatase) is applied to photocatalytically degrade nitrobenzene with ultraviolet lamp as light source.The effects of some factors,such as dosage of TiO2,pH value,the light perdurability,initial concentration of nitrobenzene and Cu2 /TiO2 photocatalyst are studied.The results show that under the following condition:dosage of TiO2 3.0 g/L,pH=3,initial concentration 40 mg/L,room temperature,nitrobenzene degradation rate is 80.6% after 6 h.The photocatalytic activity of the 1%(in mole percent)Cu2 composite particles is higher than that of TiO2,the degradation rate increases 14.5% compared with that of TiO2.