系列交联石墨烯海绵的制备及吸附性能研究

摘要为探究小分子与石墨烯交联材料的制备和吸附性能,通过水热法制备了氧化石墨烯水凝胶,将其分别与乙二胺、1,3-丙二胺、二乙烯三胺合成出3种交联石墨烯材料,并用微波膨化法制备交联石墨烯海绵。利用SEM、FTIR、BET等方式对其结构进行表征,考察膨化前后3种交联石墨烯海绵材料在吸附液体量的差异,进一步利用亚甲基蓝作为污水里的有机物进行吸附模拟实验。结果表明,此种材料具有优良的吸附性能,吸附过程符合二级动力学规律;随着交联小分子碳数的增加,吸附量增加了26%,吸附速率在一定程度上有所增加;膨化后的吸附性能明显优于膨化前,最高的提升了1.37倍。

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	林艳欣
	王鑫
	石睿杰
	蒋旭
	王宁
	王苹
	冯亚青
	孟舒献

关键词：石墨烯吸附材料污水处理吸附动力学

Abstract： In order to explore the preparation and adsorption properties of small molecules and graphene crosslinking materials, graphene hydrogels were prepared by hydrothermal method, and three cross-linked graphene sponge materials were synthesized from ethylenediamine, 1,3-Diaminopropane and Diethylenetriamine, respectively. The structure was characterized by SEM, FTIR and BET, and the difference of liquid adsorption capacity of three cross-linked graphene sponge materials before and after expansion was investigated. Methylene blue was further used as organics in sewage for adsorption simulation experiment. The results show that these series of graphene material have excellent adsorption properties, and the adsorption process conforms to the pseudo-second-order kinetic equation. With the increase of the number of carbons in cross-linked small molecular, the adsorption capacity increases by 26% and the adsorption rate increases to a certain extent. The adsorption performance after expansion is obviously better than that before expansion, which is raised by 1.37 times than before.

Keywords： graphene adsorption material sewage treatment adsorption kinetics

Received 2022-02-09;

Fund:国家自然科学基金资助项目(21676187)。

Corresponding Authors: 孟舒献,副教授,E-mail:msxmail@tju.edu.cn。 Email: msxmail@tju.edu.cn

About author: 林艳欣(1996-),女,硕士研究生,现从事石墨烯吸附性能方面的研究。

引用本文:

林艳欣, 王鑫, 石睿杰, 蒋旭, 王宁, 王苹, 冯亚青, 孟舒献.系列交联石墨烯海绵的制备及吸附性能研究[J]. 化学工业与工程, 2024,41(4): 28-37

LIN Yanxin, WANG Xin, SHI Ruijie, JIANG Xu, WANG Ning, WANG Ping, FENG Yaqing, MENG Shuxian.Preparation and adsorption properties of series of cross-linked graphene sponge[J]. Chemcial Industry and Engineering, 2024,41(4): 28-37

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