焦杰明 赵维娜 程有亮x 朱嘉

摘要：本文以石墨烯量子点为基体，在边缘接枝甲基咪唑，再与锌离子络合形成含石墨烯量子点的类沸石咪唑骨架ZIF-8复合材料。其中，柠檬酸为碳源，组氨酸提供甲基咪唑为配体。利用扫描电镜、透射电镜、X射线衍射、红外光谱、吸附等手段研究复合材料的微观结构和对VOCs的监测效果。制备的类ZIF-8复合材料具有三维多孔结构，将其作为荧光探针，二甲苯、丙酮和甲醛三种VOCs作为监测目标，吸附结果表明复合材料对二甲苯、丙酮和甲醛均具有良好的监测灵敏度，其中对二甲苯的监测灵敏度更高，检测极限达到0.014 μg/mL。

关键词：石墨烯量子点；沸石咪唑酯骨架材料；复合材料；挥发性有机物；吸附

中图分类号：TB48；TB33；TQ424 文献标识码：A 文章编号：1400 （2021） 06-0043-04

Preparation of Like Zeolite Imidazole Framework ZIF-8 Composites and Their Applications

— For monitoring and Treating VOCs in Packaging Industry

JIAO Jie-ming1，2， ZHAO Wei-na2， CHENG You-liang2*， ZHU Jia2（1. Shenzhen Glareway Science and Technology Co Ltd， Shenzhen 518110， China； 2. Xian University of Technology， Xian 710048， China）

Abstract： This work aims to prepare like zeolite imidazole framework ZIF-8 composites using graphene quantum dots GQDs as the matrix， and methylimidazole was grafted on the edges， and then complexed with zinc ions. For preparing the composites， citric acid was used as carbon source， histidine as methylimidazole and zinc chloride as the source of zinc ions. The analysis methods including SEM， TEM， XRD， FT-IR and adsorption experiments were used to study the microstructure of composite materials and the monitoring effect on VOCs. These results showed that as-prepared composites had a threedimensional porous structure. When they were used as fluorescence probes， three VOCs， including xylene， acetone and formaldehyde， were used as monitoring targets. The results showed that the composites had a good sensitivity for the detection of xylene， acetone and formaldehyde. The sensitivity of xylene was highest， and the detection limit reached 0.014 μg/mL.

Key words： graphene quantum dots； zeolite imidazole framework； composite materials； volatile organic compounds； adsorption

VOCs（Volatile Organic Compounds，挥发性有机化合物）广泛存在于生活和工业生产环境中，其在大气中形成的光化学烟雾，大多具有致癌、致畸、致突变性，对环境和人体健康危害很大[1]。2019年国家发展改革委等部门首次将VOCs综合治理列入《绿色产业指导目录（2019年版）》的主要内容[2]。目前，VOCs还广泛存在于印刷包装领域，而印刷包装企业控制VOCs排放最绿色环保经济的方法，是从材料及工艺过程进行源头治理，但从现实的工业过程和技术角度，仍不可避免的有很多VOCs排放，故末端治理仍是必需措施[3]。

1 背景

我国印刷包装业不断向绿色环保方向发展，这就要求不仅要有绿色环保意识，更要有实际行动，因此对VOCs进行检测、监测、治理去除已迫在眉睫[4]。在末端治理措施中，吸附回收技术无论从绿色环保还是经济效益，都是值得提倡的[5]。……