水溶液中苯酚在阳光下催化氧化降解的初步研究

介绍了一种以加碳焙烧法改性的膨润土作载体，用溶胶－凝胶法制备的新型TiO2-Ag复合催化剂，研究了该催化剂在阳光下对水样中苯酚的催化氧化降解条件，影响因素和降解率，结果表明，该催化剂有较高的催化氧化活性，在通入空气的条件下，对PH＝4．0，浓度为5mg/L的苯酚水样处理3h，其苯酚去除率可达98％左右，该催化剂性能稳定，易于沉降分离，回收后经高温活化，可反复多次使用，为高效，经济地利用日光催化氧化含酚废水的进一步研究提供了实验依据。

Study on Photocatalytic Oxidation Degradation of Phenol in Aqueous Solution

A new TiO 2-Ag compound catalyst that is made by sol-gel method has been introduced. When treating water sample containing phenol by the catalyst, the conditions of the photocatalytic oxidation degradation, influential factors and degradation rate have been studied. Experimental results show that the catalyst has a fairly good activity of catalytic oxidation to phenol in aqueous solution under sunlight. Under the conditions of having air flow through, pH=4.0, concentration of phenol is 5-mg/L and treating time is 3 hours, the removal rate of phenol can reach about 98%. For the catalyst, its performance is stable, easy to settle down and separate and it is reusable by high temperature activation. So it is able to reduce costs of water treatment effectively.