Page 193 - 《精细化工》2020年第6期

第 37 卷第 6 期 精 细 化 工 Vol.37, No.6
202 0 年 6 月 FINE CHEMICALS June 2020

水处理技术与环境保护
基于 MOF 制备铜碳复合材料及其

对甲基橙的降解

*
李鹏翔，蒋文伟 ，姚 佩，杨德华，毛 维，易正虎
（四川大学 化学工程学院，四川 成都 610000）

摘要：以对苯二甲酸和三水合硝酸铜为原料，采用溶剂热法合成金属骨架材料 Cu-MOF，以其作为前驱体，在
氮气氛围下经过不同温度焙烧得到了铜碳复合材料 Cu-MOF-θ（θ=700、800、900、1000 ℃）。通过 XPS、SEM
和 BET 分析了 Cu-MOF-θ 的微观结构和形貌；考察了 Cu-MOF-θ 作为类芬顿非均相催化剂催化降解甲基橙（MO）
模拟废水的特性，优化了 pH、初始 MO 质量浓度并探讨了 Cu-MOF-800 的循环使用性。结果表明，Cu-MOF-θ
样品为以 Cu、C、O 为主的多孔片层状结构，尺寸随焙烧温度升高而减小。其中，Cu-MOF-800 具有最大的比
+
2+
表面积、孔体积和 n(Cu )/n(Cu )；在 H 2 O 2 浓度 12 mmol/L、催化剂质量浓度 1 g/L、反应温度 50 ℃、溶液 pH=3、
MO 质量浓度 200 mg/L 的条件下，Cu-MOF-800 对 MO 降解效率最好，经过 60 min 反应，MO 的降解率达到 99%
以上；经过 4 次循环使用后，Cu-MOF-800 的降解率仍然保持在 96%以上。
关键词：非均相；芬顿；甲基橙；金属骨架材料；铜碳复合材料；水处理技术
中图分类号：X788；TB331 文献标识码：A 文章编号：1003-5214 (2020) 06-1259-06

Preparation of copper-carbon composites based on MOF and

its degradation for methyl orange

*
LI Pengxiang, JIANG Wenwei , YAO Pei, YANG Dehua, MAO Wei, YI ZhengHu
（School of Chemistry Engineering, Sichuan University, Chengdu 610000, Sichuan, China）

Abstract: Metal-organic framework material Cu-MOF was synthesized by solvent-thermal method from
terephthalic acid and copper nitrate hydrate, and then roasted at different temperature in nitrogen to obtain
copper-carbon composites, Cu-MOF-θ (θ=700, 800, 900 1000 ℃). The materials were characterized by
XPS, SEM and BET. The catalytic degradation performances of methyl orange (MO) simulated wastewater
by Cu-MOF-θ samples as Fenton like heterogeneous catalysts were investigated. The effects of initial pH,
initial mass concentration of MO, and the stability of catalyst were optimized to explore the application of
Cu-MOF-800. The results showed that Cu-MOF-θ samples exhibited porous lamellar structure with Cu, C
and O as the main components. The size of Cu-MOF-θ decreased with the increase of roasting temperature.
Among these samples, Cu-MOF-800 had the maximum specific surface area, pore volume and
2+
+
n(Cu )/n(Cu ). Under the conditions of concentration of H 2O 2 12 mmol/L, mass concentration of catalyst 1
g/L, reaction temperature 50 ℃, pH value of solution 3, and mass concentration of MO 200 mg/L,
Cu-MOF-800 showed the best performance for the degradation of MO, and after 60 min of reaction, the
degradation rate of MO could reach up to 99%. The degradation rate of Cu-MOF-800 for MO was still over
96% even after being for 4 cycles.
Key words: heterogeneous; Fenton; methyl orange; metal-organic framework materials; copper-carbon
composites; water treatment technology

收稿日期：2019-11-15; 定用日期：2020-02-17; DOI: 10.13550/j.jxhg.20191078
作者简介：李鹏翔（1995—），男，硕士生，E-mail：614072213@qq.com。联系人：蒋文伟（1968—），男，教授，E-mail：
jiangwenwei@scu.edu.cn。