Page 111 - 《精细化工》2022年第3期

第 39 卷第 3 期 精 细 化 工 Vol.39, No.3
2022 年 3 月 FINE CHEMICALS Mar. 2022

功能材料
g-C N /Bi MoO /Ag PO 复合材料制备
6
4
3
3
2
4
及其可见光催化性能
*
赵西连，卜鑫焱，范 辉，许胜华，樊宇顺，陈丛瑾
（广西大学 化学化工学院，广西石化资源加工及过程强化技术重点实验室，广西 南宁 530004）

摘要：以三聚氰胺、二水合钼酸钠和五水合硝酸铋为原料，采用溶剂热法制备了 g-C 3 N 4 /Bi 2 MoO 6 前驱体，然后
通过共沉淀法将 Ag 3 PO 4 纳米粒子负载在前驱体上，得到 g-C 3 N 4 /Bi 2 MoO 6 /Ag 3 PO 4 复合材料。以盐酸四环素（TC）
为目标降解物，分析复合材料光催化活性。通过 XRD、FTIR、XPS、SEM、UV-Vis DRS 对复合材料进行了表
征。结果表明，g-C 3 N 4 、Bi 2 MoO 6 和 Ag 3 PO 4 之间形成了异质结结构，促进光生电子-空穴对的有效分离。在可
见光照射下，30 mg g-C 3 N 4 /Bi 2 MoO 6 /Ag 3 PO 4 复合材料在 50 min 内对 40 mL 质量浓度 10 mg/L 的 TC 溶液的降解
–1
率达到 93%。降解速率常数为 0.046 min ，分别为 g-C 3 N 4 、Bi 2 MoO 6 和 Ag 3 PO 4 的 25.6、3.9 和 1.5 倍。复合材
料对 TC 进行降解循环利用 4 次后，对 TC 的降解率为 71%，说明复合材料具有较好的稳定性。自由基捕获实验
–
结果表明，g-C 3 N 4 /Bi 2 MoO 6 /Ag 3 PO 4 复合材料光催化降解 TC 的主要活性物种为•OH 和•O 2 。
关键词：光催化；盐酸四环素；降解；复合材料；g-C 3 N 4 /Bi 2 MoO 6 /Ag 3 PO 4 ；功能材料
中图分类号：X703；TQ426；O643.3 文献标识码：A 文章编号：1003-5214 (2022) 03-0533-08

Preparation of g-C 3N 4/Bi 2MoO 6/Ag 3PO 4 composite and
its visible light catalytic performance

*
ZHAO Xilian, BU Xinyan, FAN Hui, XU Shenghua, FAN Yushun, CHEN Congjin
（Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, College of
Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China）

Abstract: g-C 3N 4/Bi 2MoO 6 precursor was prepared by solvothermal method with melamine, sodium
molybdate dihydrate and bismuth nitrate pentahydrate as raw materials, then loaded Ag 3PO 4 nanoparticles
by coprecipitation method to obtain g-C 3N 4/Bi 2MoO 6/Ag 3PO 4 composite. Its photocatalytic activity of
tetracycline hydrochloride (TC) was analyzed. The composite was characterized by XRD, FTIR, XPS, SEM
and UV-Vis DRS. The results showed that heterojunction structures were formed between g-C 3N 4, Bi 2MoO 6
and Ag 3PO 4, which promoted the effective separation of photoelectron-hole pairs. The degradation rate of
30 mg g-C 3N 4/Bi 2MoO 6/Ag 3PO 4 composite to 40 mL 10 mg/L TC reached 93% within 50 min under visible
–1
light irradiation. The corresponding rate constant was 0.046 min , which was higher than g-C 3N 4, Bi 2MoO 6
and Ag 3PO 4 with 25.6 times, 3.9 times and 1.5 times, respectively. The degradation rate of TC was 71%
after four cycles of g-C 3N 4/Bi 2MoO 6/Ag 3PO 4, indicating that g-C 3N 4/Bi 2MoO 6/Ag 3PO 4 composite had
better stability. The experimental result of free radical capture suggested that the main active species in the
–
process of g-C 3N 4/Bi 2MoO 6/Ag 3PO 4 composite for TC degradation were •OH and •O 2 .
Key words: photocatalysis; tetracycline hydrochloride; degradation; composites; g-C 3N 4/Bi 2MoO 6/Ag 3PO 4;
functional materials

盐酸四环素（TC）是最早发现的广谱抗生素。 由于现在 TC 被广泛应用于家畜饲养，使得部分 TC

收稿日期：2021-08-01; 定用日期：2021-12-03; DOI: 10.13550/j.jxhg.20210775
基金项目：国家自然科学基金（31660183）；广西石化资源加工及过程强化技术重点实验室开放基金（2020k003）
作者简介：赵西连（1997—），女，硕士生。联系人：陈丛瑾（1970—），女，教授，E-mail：gxdxccj@163.com。