ZIF-8@GO复合材料的合成及其对CO2吸附性能

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (5): 17-22.

ZIF-8@GO复合材料的合成及其对CO₂吸附性能

王胜^*, 徐文涛, 崔佳铭, 徐月

兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050

收稿日期:2023-09-22 出版日期:2024-10-28 发布日期:2024-10-31
通讯作者: 王胜(1971-),男,甘肃白银人,副教授.Email:1425948089@qq.com
基金资助:
甘肃省联合科研基金(23JRRA1564)

Synthesis of ZIF-8@GO compositesand its adsorption properties to CO₂

WANG Sheng, XU Wen-tao, CUI Jia-ming, XU Yue

State Key Laboratory of Advanced Processing and recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2023-09-22 Online:2024-10-28 Published:2024-10-31

摘要/Abstract

摘要： 化石燃料燃烧排放的CO₂造成温室效应日趋严重,开发具有对CO₂高吸附性能的吸附剂至关重要.而金属-有机框架材料(MOFs)和氧化石墨烯(GO)作为新型吸附剂,仍存在对CO₂吸附性能低的问题.采用溶剂热法制备ZIF-8@GO材料,利用XRD、SEM、BET等表征手段,研究了ZIF-8@GO材料的微观结构及其对CO₂吸附性能.研究表明:ZIF-8@GO保持了ZIF-8的晶型结构,GO主要对ZIF-8起到尺寸调控和结构导向作用.气体吸附分离测试表明,ZIF-8@GO材料与ZIF-8材料相同,均是以微孔占据孔隙主导地位的材料;当GO参与复合比例为8%时,ZIF-8@GO(8%)材料的BET和Langmuir比表面积分别为1 037.18、1 115.90 m²/g,对CO₂吸附量为34.347 cm³/g,较母体ZIF-8材料对CO₂吸附量提高了32.3%.

关键词: 金属-有机骨架材料, 氧化石墨烯, CO₂的吸附

Abstract: The greenhouse effect caused by CO₂ emissions from fossil fuel combustion is becoming more and more serious, it is urgent to develop adsorbents with CO₂ adsorption properties. As new adsorbents, metal-organic frame materials (MOFs) and graphene oxide (GO) have the problem of low CO₂ adsorption performance. ZIF-8@GO was prepared by solvothermal method, and the microstructure and adsorption properties of ZIF-8@GO to CO₂ were studied by XRD, SEM and BET. The results showed that ZIF-8@GO maintains the crystal structure of ZIF-8, and GO mainly plays a role in size regulation and structure orientation of ZIF-8. The gas adsorption separation test showed that ZIF-8@GO is the same as ZIF-8, which is dominated by micropores. Notably, when the GO participation ratio is 8%, the BET and Langmuir specific surface areas of ZIF-8@GO(8%) materials are 1 037.18, 1 115.90 m²/g, respectively, and theadsorption capacity to CO₂ is 34.347 cm³/g. Compared with the parent ZIF-8 material, the CO₂adsorption capacity is increased by 32.3%.

Key words: metal-organic skeleton materials, graphene oxide, CO₂ adsorption

中图分类号:

TB34

王胜, 徐文涛, 崔佳铭, 徐月. ZIF-8@GO复合材料的合成及其对CO₂吸附性能[J]. 兰州理工大学学报, 2024, 50(5): 17-22.

WANG Sheng, XU Wen-tao, CUI Jia-ming, XU Yue. Synthesis of ZIF-8@GO compositesand its adsorption properties to CO₂[J]. Journal of Lanzhou University of Technology, 2024, 50(5): 17-22.

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ZIF-8@GO复合材料的合成及其对CO₂吸附性能

Synthesis of ZIF-8@GO compositesand its adsorption properties to CO₂

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