光催化降解甲基蓝溶液

来源期刊：中南大学学报(自然科学版)2004年第6期

论文作者：关鲁雄 秦旭阳 丁萍 唐炜 唐红娟

文章页码：970 - 973

关键词：二氧化钛;甲基蓝;光催化;降解

Key words：titania dioxide; methyl blueness; photocatalysis; degradation

摘    要：用TiO₂粉末作催化剂,用甲基蓝溶液模拟有机废水,用高压汞灯模拟日光光照条件,研究了甲基蓝溶液的光催化降解过程。研究结果表明,对质量浓度为8 mg/L和pH=5的甲基蓝溶液,加入粒度为20~30 nm的锐钛型TiO₂粉末使其质量浓度为0.4 g/L,并加入30%的H₂O₂使其体积分数达到4%,经250 W高压汞灯光照120 min,会产生TiO₂/H₂O₂协同催化效应,甲基蓝的降解率达到91%。

Abstract: Using titania dioxide as activator, methyl blueness simulatingwaste water, and high voltage mercury lamp simulating sunlight, the degradation of methyl blueness by photocatalysis was studied. The results show that adding TiO₂ power and 30% H₂O₂ to 500 ml, pH=5 and 8 mg/Lmethyl blueness liquor, until the mass concentration and ratio by volume reach to 0.4 g/L and 4%, respectively. Lighting for 120 min, the max degradation rate reach to 91% because of the cooperate catalysis of TiO₂ and H₂O₂.