Page 118 - 《精细化工》2020年第7期

第 37 卷第 7 期 精 细 化 工 Vol.37, No.7
202 0 年 7 月 FINE CHEMICALS July 2020

功能材料
介孔 Ag/AgCl/CeO 的制备及其 photo-CWPO
2

体系的催化性能

2
3
赵国峥 1,2 ，李长波 ，张洪林
（1. 辽宁工程技术大学 矿业学院，辽宁 阜新 123000；2. 辽宁石油化工大学 环境与安全工程学院，
辽宁 抚顺 113001；3. 辽宁奥克化学股份有限公司，辽宁 辽阳 111003）

摘要：以六水合硝酸铈、硝酸银和嵌段共聚物 F127 为原料，采用微波辅助软模板法、沉积-沉淀法和光还原法
制备了有序介孔 Ag/AgCl/CeO 2 催化剂。通过 XRD、SEM、EDS、TEM、N 2 吸附-脱附和 UV-vis DRS 对该催化
剂的形貌、结构及化学组成进行了表征与测试。建立了光-催化湿式过氧化反应体系（photo-CWPO），考察了
Ag/AgCl/CeO 2 在可见光照射下对丙烯腈废水的催化湿式过氧化（CWPO）降解性能。结果表明：制备的
Ag/AgCl/CeO 2 具有有序的介孔结构，Ag 和 AgCl 在 CeO 2 表面形成，最佳 Ag 负载量为 2 mmol 时获得样品的比
2
表面积为 317.5 m /g，在可见光区有较强的吸收，禁带宽度 2.9 eV。微波辅助快速制备的 Ag/AgCl/CeO 2 催化剂
在 photo-CWPO 体系比单独 CWPO 体系具有更高的催化性能。Ag 负载量、催化剂及 H 2 O 2 投加量、pH 可影响
化学需氧量（COD）的去除率。当丙烯腈废水 COD 质量浓度为 500 mg/L，催化剂用量为 200 mg，H 2 O 2 （质量
分数 30%）投加量为 8 mL，反应 60 min 时，COD 去除率可达 90%。
关键词：有序介孔；Ag/AgCl/CeO 2 ；丙烯腈；photo-CWPO；微波辅助；功能材料
中图分类号：X506；O643.36 文献标识码：A 文章编号：1003-5214 (2020) 07-1400-08

Preparation of Ag/AgCl/CeO 2 with mesoporous and its

catalytic performance in photo-CWPO system

3
2
1,2
ZHAO Guozheng , LI Changbo , ZHANG Honglin
（1. Liaoning Technical University, College of Mining, Fuxin 123000, Liaoning, China; 2. Liaoning Shihua University,
College of environment and safety engineering, Fushun 113001, Liaoning, China; 3. Liao Ning Oxiranchem, Inc.,
Liaoyang 111003, Liaoning, China）

Abstract: Ag/AgCl/CeO 2 was prepared by soft template method assisted by microwave, sedimentation
and photoreduction, Ce(NO 3) 3·6H 2O, AgNO 3 and block copolymer F127 as raw materials. The structure,
morphology and composition of the prepared catalysts were investigated by XRD、SEM、EDS、TEM、
N 2-Adsorption desorption and UV-vis DRS. Meanwhile, a photo-CWPO (Catalytic wet peroxide oxidation)
system was established. The catalytic degradation of acrylonitrile wastewater by Ag/AgCl/CeO 2 under
UV-Vis irradiation was studied. The results showed that the Ag/AgCl/CeO 2 prepared with best Ag dosage（2
2
mmol） has ordered mesoporous structure, specific surface area was 317.5 m /g and the band gap was 2.9 eV
with strong absorption in visible light region. The Ag/AgCl/CeO 2 Prepared by microwave-assisted method
had higher catalytic performance in photo-CWPO system than in CWPO system alone. The removal rate of
COD was affected by Ag loading, catalyst and H 2O 2 dosage, pH value. When the COD concentration of
acrylonitrile wastewater was 500 mg/L, the dosage of catalyst was 200 mg with 30 mg Ag loaded, the
amount of H 2O 2 (mass fraction 30%) was 8 mL, and the reaction time was 60 min, COD removal rate can
reach more than 90%.
Key words: ordered mesoporous; Ag/AgCl/CeO 2; acrylonitrile; photo-CWPO; microwave assisted;

收稿日期：2020-01-12; 定用日期：2020-04-09; DOI: 10.13550/j.jxhg.20200035
基金项目：国家水体污染控制与治理科技重大专项课题（2012ZX07202-002）
作者简介：赵国峥（1980—），女，博士生，E-mail：478972510@qq.com。