TiO_2纳米管阵列膜光催化降解苯胺

摘要

In this paper,the TiO2 nanotube arrays were successfully applied to photocatalytic degradation aniline.The factors that influence photocatalytic degradation aniline were also investigated.The results showed that the optimal reaction condition is UV wavelength irradiation of 254 nm,reaction time of 120 min and pH of 9,under which the ratio of degradation of aniline reached 87%.Furthermore,the TiO2 nanotube arrays＇ photocatalytic degradation activity was improved validly when Fe3＋,Cu2＋ and H2O2 oxides were added into the reaction system,and the degradation rate was improved by 42%,31% and 19%.Possible mechanisms for photocatalytic degradation aniline with TiO2 nanotube were proposed.%利用TiO2纳米管阵列光催化降解含苯胺水样,考察了影响苯胺降解率的各种因素。结果表明,在照射光源波长254 nm,反应时间120 min和苯胺水溶液pH=9时,TiO2纳米管阵列光催化氧化苯胺的效果最好,苯胺降解率达到87%;另外在苯胺水样中加入含Fe3＋、Cu2＋的金属盐和少量的H2O2氧化剂后,对TiO2纳米管阵列的催化活性具有促进作用,其苯胺降解率分别提高了42%、31%和19%。探讨了TiO2纳米管阵列光催化降解苯胺的反应机理。