期刊论文

Synthesis of PPy /g-C_3 N_4 photocatalytic materials and its degradation properties towards uranium

中文

应用化工

1671-3206

2021

50

01

35-38

10.16581/j.cnki.issn1671-3206.2021.01.009

国家自然科学基金（11475080）； 南华大学博士科研启动基金项目（2016XQD06）； 湖南省研究生创新项目（CX20190742）；

本校为第一机构

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%。

In order to improve the photocatalytic performance of g-C_3N_4, PPy /g-C_3N_4 composites were prepared by in-situ polymerization. SEM,XRD,BET and FTIR were used to study the PPy /g-C_3N_4 micromorphology, c hemical composition and photocatalytic degradation of uranium. The results show that PPy inhibits the growth of g-C_3N_4 grains and increases the specific surface area of g-C_3N_4. 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-C_3N_4 and PPy /g-C_3N_4 composites on the degradation rates of U(VI) w...