纳米CdS/壳聚糖复合粒子的制备及光催化性能研究

Preparation and photocatalytic performance of the nano-CdS/chitosan composite particles

用原位生成法成功制备了纳米Cd S/壳聚糖复合粒子,并用于染料废水中甲基橙的可见光催化降解,研究了相关因素对甲基橙光降解率的影响。结果表明,该光催化降解反应为一级反应;酸性媒介更有利于甲基橙光催化降解;适量的复合粒子在第6次重复使用时,反应60 min甲基橙的降解率仍可达81.51%,显示出好的抗光腐蚀能力和重复使用寿命。

The nano-Cd S / chitosan composite particles were prepared successfully by using in-situ synthesis method,the photocatalytic degradation of methyl orange wastewater using the catalyst was investigated under visible light,the influences of correlative factors on methyl orange degradation rate were investigated. The experimental results indicated that oxidation reaction of photocatalytic degradation was first order reaction,the methyl orange wastewater could be more efficiently degradated in an acid media,when the proper dosage of composite particles were used for the sixth times,the degradation rate of methyl orange was still 81. 51% after 60 min,indicating the composite particles had a good ability to inhibit light corrosion and long reusage life.