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用溶胶-凝胶法制备了钒-氮共掺杂TiO2/凹凸棒复合光催化材料,采用TEM、XRD、BET及UV-Vis漫反射吸收光谱对其性能进行了表征。在模拟太阳光条件下,以亚甲基蓝溶液为目标降解物,对复合光催化材料光催化性能进行评价,复合光催化材料投入到亚甲基蓝溶液中饱和吸附,在40mg/L的亚甲基蓝溶液中,复合光催化材料投加量为1g/L,在800W氙灯下反应6h后,对亚甲基蓝的降解率为84%;重复反应4次,光催化降解变化不大;静置40min后,完成沉降,实现回收。
Vanadium-nitrogen co-doped TiO2 / attapulgite composite photocatalysts were prepared by sol-gel method. Their properties were characterized by TEM, XRD, BET and UV-Vis diffuse reflectance spectroscopy. The photocatalytic performance of the composite photocatalytic material was evaluated with methylene blue solution as the target degradation under simulated sunlight conditions. The composite photocatalytic material was loaded into methylene blue solution for saturation adsorption. In a 40 mg / L methylene blue solution, the composite photocatalyst The material dosage was 1g / L, and the degradation rate of methylene blue was 84% after reacted for 6h under 800W xenon lamp. The reaction was repeated 4 times, and the photocatalytic degradation did not change much. After standing for 40min, the sedimentation was completed and recovery was achieved.