制备还原氧化石墨烯(RGO)和Cu-BTC,并进一步通过水热反应将两者结合制备高性能吸附剂用于吸附挥发性有机物(VOCs)。通过对水热过程中反应温度和反应时间的调整,实现对复合吸附剂中RGO材料形貌的控制,进而实现对不同气体吸附能力的调控。结果表明:优化后的复合材料对甲醇和乙醇的吸附量分别达到13.6mmol/g和9.68mmol/g。复合材料中RGO的形貌对其在高温下的稳定性具有重要的影响,当RGO为纳米片状时,复合吸附剂的高温稳定性最好。此外,所制备的复合材料具有较大的比表面积和溶液中的高稳定性,复合RGO后其吸附溶液中的罗丹明B量比纯Cu-BTC高18.9%,表明其在污水净化领域也具有潜在的应用。
Reduced graphene oxide (RGO) and Cu-BTC composites were prepared and further combined together by hydrothermal reaction to obtain high-performance adsorbent for the adsorption of volatile organic compounds (VOCs) for the adsorption of VOCs.By adjusting the reaction temperature and reaction time in the hydrothermal process,the morphology of RGO could be controlled,which further determined the adsorption ability for different gas molecules.After optimizing,the adsorption amounts of methanol and ethanol by the composite were 13.6mmol/g and 9.68mmol/g,respectively.The morphology of RGO in the prepared composite exerted a remarkably influence on its stability at high temperature,and the sample displayed the best stability when the RGO nanosheets were formed.In addition,the large specific surface area and high stability in solution of the prepared samples endowed them a potential application in the field of wastewater purification,and the adsorption amount of rhodamine-B was 18.9% higher than that of pure Cu-BTC.
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