羟基磷灰石负载磷酸银光催化降解染料的研究

Photocatalytic Degradation of Dyes Using Hydroxyapatite Supported Ag_3PO_4 Nanoparticles

采用溶液离子交换法成功制备了羟基磷灰石负载的Ag3PO4复合光催化剂(Ag3PO4/HA).采用XRD、TEM对制备出的催化剂进行表征,研究了有光和无光条件下对亚甲基蓝的降解性能,结果表明,Ag3PO4/HA降解性能良好,对银离子的利用效率较纯Ag3PO4高,Ag3PO4/HA的投加剂量、银负载量以及亚甲基蓝溶液的质量浓度对光催化降解效果有影响.

The hydroxyapatite supported Ag3PO4 （Ag3POJHA） was prepared by the ion exchange process and characterized by XRD and TEM. The photocatalytic activity was evaluated by methylene blue （MB） degradation under dark and under UV light irradiation. The results indicated that Ag3PO4/HA is an excellent photocatalyst un- der UV light irradiation. The silver ion utilization efficiency of Ag3PO4/HA is higher than that of pure Ag3PO4. The photocatalytic degradation efficiency is dependant on the dose of Ag3PO4/HA, the loadings of silver ion on HA sup- port and the concentration of MB solution.