g-C3N4/TiO2复合材料的制备及其光催化性能研究

Preparation and Photocatalytic Properties of g-C3N4/TiO2 Composites

采用高温煅烧和溶胶-凝胶法结合的方法制备得到不同复合比的g-C3N4/TiO2复合纳米材料,通过FT-IR和SEM表征手段分析了样品的结构和形貌。同时研究了g-C3N4/TiO2复合催化剂在可见光下降解罗丹明B的催化活性。实验结果表明,质量比为30%的g-C3N4/TiO2复合催化剂的催化效果最佳,当光催化反应时间为210 min时,其降解率达到59.4%。

g-C3N4/TiO2 composite nanomaterials with different mass ratios were prepared by high-temperature calcination and sol-gel methods.The structure,morphology and element composition of the samples were analyzed by FT-IR and SEM.Meanwhile,the catalytic activity of g-C3N4/TiO2 composite catalyst in Rhodamine B was studied.The experimental results showed that the g-C3N4/TiO2 composite catalyst with a mass ratio of 30%had the best catalytic effect.When the photocatalytic reaction time was 210 min,the degradation rate reached 59.4%.