中文摘要：

研究了天然闪锌矿可见光催化还原降解四氯化碳（CCl4）的能力,并系统探讨了光源、闪锌矿用量、电子供体和溶解氧对N,N-二甲基甲酰胺有机体系中CCl4降解效果的影响,获得了该光催化反应体系的最佳实验条件。在可见光下,闪锌矿用量为1g/L,电子供体为甲酸0.5mol/L,溶解氧含量为空气平衡时,经8h光照反应,CCl4降解率达91.48%。通过GC-MS对降解产物进行分析,提出了天然闪锌矿在改有机体系中可见光催化还原降解CCl4的机理。

英文摘要：

The photocatalytic reduction of CCl4 in natural sphalerite suspension under visible light irradiation was examined.The effects of sphalerite dosage,electron donors and dissolved oxygen on CCl4 degradation rate were discussed in N,N-dimethylformamide（DMF） organic solvent system.And the optimum experiment condition was obtained based on series trials,namely sphalerite dosage was 1 g/L,electron donor was formic acid with concentration of 0.5 mol/L,and dissolved oxygen condition is air equipment.Under the best experiment condition,CCl4 was degraded 91.48% after being illuminated for h8h with visible light.The degradation mechanism was discussed based on the analysis of degradation products.