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Cu-SBA-15催化湿式过氧化氢氧化水溶液中罗丹明B

Keywords: Cu-SBA-15,罗丹明B,催化氧化,过氧化氢

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Abstract:

采用水热晶化法合成了不同含铜量的Cu-SBA-15介孔分子筛,并且用XRD、N2吸附、TEM以及UV-vis对所合成的样品进行表征。以Cu-SBA-15为催化剂,H2O2为氧化剂,催化湿式过氧化水溶液中的罗丹明B,主要考察H2O2浓度、催化剂用量、处理温度、初始pH等因素对罗丹明B氧化效果的影响。结果表明,在同样的处理条件下罗丹明的脱色率明显高于TOC去除率,处理温度、初始pH对罗丹明B的脱色与氧化有重要影响。在罗丹明B初始浓度100mg/L,H2O2初始浓度1.8g/L,催化剂量0.3g/L,温度60℃,pH为7.0,处理时间100min时,罗丹明B的脱色率为98.6%,TOC去除率为62.8%。

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