壳聚糖固载纳米二氧化钛的制备及其应用

Preparation and Application of Chitosan Supported Nano Titanium Dioxide

纳米二氧化钛在实际应用中,由于极性强、易团聚,使其优异性能得不到发挥,严重影响了纳米二氧化钛的应用,纳米二氧化钛的各种修饰与改性已成为纳米材料科学的研究热点。制备了天然高分子材料壳聚糖固载纳米二氧化钛材料,并对其在降解废水中苯酚的光催化性能进行了研究,得出了溶液pH值为7~8,催化剂用量0.3~0.4 g/L、氧气流量为1.5 L/min时效果最好的结论。

Because of its strong polarity and easy aggregation of nano-titanium dioxide,its excellent properties can not be played fully,which seriously affects its application,and various modifications of nano-titanium dioxide have become the research hotspot of nanomaterials science.In this paper,the polymer material of chitosan supported nano-titanium dioxide was prepared,and its photocatalytic performance in the degradation of phenol in wastewater was studied.The conclusion was drawn that the best effect is achieved when the pH of the solution is 7~8,the amount of catalyst is 0.3~0.4 g/L and the oxygen flow rate is 1.5 L/min.