Preparation and Properties of ZIF-8 Carboxylated Graphene Oxide Composite
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.
NETL
NSTL
万方数据
