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用溶胶-凝胶法合成了一种纳米钛复合光催化剂并用XRD、SEM、FTIR技术进行了表征分析。以中压汞灯为光源、以胺类阳离子捕收剂十二胺废水为降解对象,详细研究了纳米钛晶体膜复合次数、捕收剂十二胺废水初始浓度和pH值对光催化降解率的影响。结果表明:对浓度为30 mg/L、初始pH值为6.12的十二胺捕收剂废水,光催化降解3 h,降解率高达99.67%。复合光催化剂循环使用10次后,降解率为97.49%。十二胺分子中主要的N-H基团已被完全破坏,中间产物及小分子产物也被有效分解矿化。
A nano-titanium composite photocatalyst was synthesized by sol-gel method and characterized by XRD, SEM and FTIR. Using medium-pressure mercury lamp as light source and amines cationic collector dodecylamine wastewater as degradation targets, the effects of nano-titanium crystal film composite times, initial concentration of collector dodecylamine wastewater and pH value on photocatalytic degradation rate Impact. The results showed that the degradation rate of dodecylamine collector wastewater with the concentration of 30 mg / L and the initial pH value of 6.12 was 99.67% after being photocatalytically degraded for 3 h. After the composite photocatalyst was recycled 10 times, the degradation rate was 97.49%. Dodecylamine molecules in the main N-H groups have been completely destroyed, intermediate products and small molecule products are also effectively decomposed mineralization.