TiO2光催化降解8-苯胺-1-萘磺酸

Degradation of 8-anilin-1-Naphthalene sulfonic acid by TiO_2 photo catalytic

采用TiO2作为光催化剂，对水中的8-苯胺-1-萘磺酸进行光催化降解。探讨了TiO2对8-苯胺-1-萘磺酸吸附平衡时间及吸附量、TiO2投放量、8-苯胺-1-萘磺酸浓度、溶液的pH值以及光照时间等因素对降解效果的影响。试验结果表明，无光照条件下，TiO2对8-苯胺-1-萘磺酸几乎不发生催化效应，而是以表面吸附作用为主，30min左右表面吸附达到平衡；紫外灯管照射时，10mg／L的8-苯胺-1-萘磺酸溶液，反应时间为5—7h，TiO2光催化剂投放量为2．5—3g／L，在pH为4—6时，比较合适，出现最大降解率，降解率可达95％以上。

The photo catalytic degradation of 8 - anilin - 1 - Naphthalene sulfonic acid in water is earried out with TiO2photocatalyst. The influencing factors such as adsorption amount of 8 - anilin - 1 - Naphthalene sulfonic acid by TiO2 in some time, amount of TiO2 catalyst used, 8 - anilin - 1 - Naphthalene sulfonic acid concentration, pH value, illumination time etc on the effect of the degradation are studied. The test shows that 8 - anilin - 1 - Naphthalene sulfonic acid hardly catalyze reaction condition no ultraviolet radiation, but the surface adsorption reaction is central about 30 minute,8- anilin- 1 -Naphthalene sulfonic acidl is degraded for about 95% after 5 to 7 hours,10mg/ L, pH value for 4 to 6, amount of TiO2 catalyst for 2.5 - 3.0 g/L.