ZIF-8复合羧基化氧化石墨烯的制备及其性能研究
Preparation and Properties of ZIF-8 Carboxylated Graphene Oxide Composite
苏瑞娟1
作者信息
- 1. 甘肃有色冶金职业技术学院,甘肃 金昌 737100
- 折叠
摘要
本实验采用热容剂法制取样品,样品的XRD图谱中2θ=7.3°,10.36°,12.7°,14.7°,16.42°,18.02°,22.1°,24.5°时,与ZIF-8 复合羧基化氧化石墨烯标准的图谱具有一致的特征衍射峰,也就是(011)、(002)、(112)、(022)、(013)、(222)、(114)、(233)等晶面.没有杂质峰,说明制得到的ZIF-8 复合羧基化氧化石墨烯材料的结晶度非常高.在440℃后ZIF-8复合羧基化氧化石墨烯的热稳定性比较好,石墨烯引入羧基使热稳定性增强.样品比表面积为 4.67 m2/g,ZIF-8 复合羧基化氧化石墨烯N2 吸附/脱附饱和吸附量在 13.52 cm3/g,因此可知ZIF-8 复合羧基化氧化石墨烯可以用来吸附分离N2,介孔的结构使得ZIF-8 复合羧基化氧化石墨烯适用于气体吸附和为离子运输提供良好的通道.
Abstract
In this experiment,samples were prepared using the hot agent method.The XRD patterns of the samples showed consistent characteristic diffraction peaks with the ZIF-8 composite carboxylated graphene oxide standard at 2θ=7.3 °,10.36 °,12.7 °,14.7 °,16.42 °,18.02 °,22.1 °,and 24.5 °,namely(011),(002),(112),(022),(013),(222),(114),(233)crystal planes.The absence of impurity peaks indicates that the crystallinity of the ZIF-8 composite carboxylated graphene oxide material obtained is very high.The thermal stability of ZIF-8 composite carboxylated graphene oxide is relatively good after 440℃,and the introduction of carboxyl groups into graphene enhances its thermal stability.The specific surface area of the sample is 4.67 m2/g,and the saturated adsorption capacity for N2 adsorption/desorption of ZIF-8 composite carboxylated graphene oxide is 13.52 cm3/g.Therefore,it can be concluded that ZIF-8 composite carboxylated graphene oxide can be used for adsorption and separation of N2.The mesoporous structure makes ZIF-8 composite carboxylated graphene oxide suitable for gas adsorption and provides a good channel for ion transport.
关键词
MOFs材料/ZIF-8复合羧基化氧化石墨烯/应用/气体吸附性能Key words
MOFs materials/ZIF-8 composite carboxylated graphene oxide/application/gas adsorption performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据