Ho-TiO2催化剂光催化降解性能

Photocatalytic Degradation of Ho-TiO2 Catalyst

采用水热法和溶胶凝胶法制备出稀土钬掺杂二氧化钛(Ho-TiO2)光催化剂,研究催化剂在不同煅烧温度、不同投加量、不同初始浓度条件下降解碱性品红(FB)的光催化性能。结果表明:钬钛摩尔比为0.6%,煅烧温度为600℃制备出的Ho-TiO2催化剂具有良好的降解性;碱性品红(FB)溶液的初始浓度为15 mg/L,Ho-TiO2催化剂投加量为0.2g时,FB的降解率可达到97%以上。UV-Vis DRS显示催化剂最大吸收波长约为475nm。

Ho-TiO2 photocatalysts doped with rare earth holmium were prepared by hydrothermal method and sol-gel method.The photocatalytic properties of the catalysts for degradation of basic fuchsin(FB)under different calcination temperature,different dosage and initial concentration were studied.The results showed that the Ho-TiO2 catalyst prepared at 600℃with the molar ratio of holmium to titanium of 0.6%had good degradability.When the initial concentration of FB solution is 15 mg/L and the dosage of Ho-titanium dioxide catalyst is 0.2 g,the degradation rate of FB can reach over 97%.UV-Vis DRS showed that the maximum absorption wavelength of the catalyst was about 475 nm.