以四乙烯五胺(TEPA)为氮源和改性剂,对氧化石墨烯(GO)进行氨基化改性,通过一步水热法制备四乙烯五胺-石墨烯气凝胶(TEPA-GA),采用FT-IR、XRD、拉曼光谱、SEM、XPS、TG等方法对产品的化学结构与形貌进行表征及性能检测。结果表明,通过TEPA成功将GO进行氨基化改性,并制备出具有多孔互穿网络结构的 TEPA-GA,其具有超轻、密度小及热性能优异等特点。再将TEPA-GA用于对Cr(Ⅵ)的吸附研究,发现在最佳吸附条件下,吸附容量高达342.48mg/g。
Tetraethylene pentamine used as a nitrogen source and modifier to amino-functionalized graphene oxide,tetraethylene pentamine-graphene aerogel(TEPA-GA) was prepared by one-step hydrothermal method.The structure and morphology of the TEPA-GA were characterized by FT-IR,XRD,Raman,SEM,XPS and TG.The results showed that graphene aerogel was successfully modified by TEPA,and TEPA-GA with porous interpenetrating network structure were prepared,which had super light and good thermal properties.TEPA-GA was used to study the adsorption of Cr(Ⅵ).Under the optimum adsorption conditions,the adsorption capacity was up to 342.48mg·g-1.
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基金资助
国家重点研发计划项目(2017YFB0308500)
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