【摘要】 为了提高g-C₃N₄的光催化性能,通过原位聚合法制备了PPy/g-C₃N₄复合材料。通过SEM、XRD、BET和FTIR等表征手段研究PPy/g-C₃N₄的微观形貌、化学组成以及光催化降解铀的性能。结果表明,PPy抑制了g-C₃N₄晶粒的生长,提高了g-C₃N₄的比表面积。在降解时间60 min,pH=5,U（VI）初始浓度5 mg/L,光催化剂投加量200 mg/L的条件下,g-C₃N₄和PPy/g-C₃N₄复合材料对U（VI）的降解率分别为83.11%和96.20%。重复使用3次后,PPy/g-C₃N₄对U（VI）的降解率仍达92.4%。更多还原

【Abstract】 In order to improve the photocatalytic performance of g-C₃N₄,PPy/g-C₃N₄ composites were prepared by in-situ polymerization.SEM,XRD,BET and FTIR were used to study the PPy/g-C₃N₄ micromorphology,chemical composition and photocatalytic degradation of uranium.The results show that PPy inhibits the growth of g-C₃N₄ grains and increases the specific surface area of g-C₃N₄.When the degradation time was 60 min,pH=5,the initial concentration of U（VI） was 5 mg/L,and the amount of photocatalyst was 200 mg/L.g-C₃N₄ and PPy/g-C₃N₄ composites on the degradation rates of U（VI） were 83.11% and 96.20%,respectively.After repeated use 3 times,the degradation rate of U（VI） by PPy/g-C₃N₄ still reached 92.4%.更多还原