三维立体介孔结构的海藻酸钠/氧化石墨烯复合气凝胶的制备及其对亚甲基蓝的吸附  

Preparation of 3-dimensional mesoporous sodium alginate/graphene oxide composite aerogel for adsorption of methylene blue

作　　者：朱薇[1,2] 江坤[1,3] 游峰 姚楚[1,3] 王昆[2] 江学良[1,3] ZHU Wei;JIANG Kun;YOU Feng;YAO Chu;WANG Kun;JIANG Xueliang(School of Material Science and Engineering,Wuhan Institute of Technology,Wuhan 430073,China;College of Post and Telecommunication of WIT,Wuhan 430073,China;Hubei Key Laboratory of Plasma Chemistry and New Materials,Wuhan Institute of Technology,Wuhan 430073,China)

机构地区：[1]武汉工程大学材料科学与工程学院,武汉430074 [2]武汉工程大学邮电与信息工程学院,武汉430073 [3]武汉工程大学湖北省等离子化学与新材料重点实验室,武汉430073

出　　处：《复合材料学报》2022年第5期2215-2225,共11页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51273154);湖北省自然科学基金(2017CFB289);湖北省教育厅科研项目(B2016483);等离子体化学与新材料湖北省重点实验室创新基金(2020CX03)。

摘　　要：为了有效去除废水中的染料,本论文以海藻酸钠(SA)和氧化石墨烯(GO)为原料,采用一步水热法制备海藻酸钠/氧化石墨烯(SA/GO)复合水凝胶,并通过冷冻干燥法得SA/GO复合气凝胶。利用FT-IR、XRD、SEM、TEM、N_(2)等温吸附-脱附、接触角来表征SA/GO复合气凝胶并研究其吸附性能。结果表明,SA/GO复合气凝胶是具有三维立体结构的多孔材料,BET比表面积约为580.54 m^(2)·g^(−1)。讨论了SA/GO复合气凝胶对亚甲基蓝(MB)溶液吸附过程的影响因素,在碱性条件下,吸附效果最好,吸附率可达99.41%,吸附量可达248.53 mg·g^(−1),并表现出优异的循环再生性。In order to effectively remove dye from wastewater,sodium alginate/graphene oxide(SA/GO)composite hydrogel was prepared by one-step hydrothermal method using sodium alginate(SA)and graphene oxide(GO)as raw materials,and SA/GO composite aerogel was prepared by freeze drying.The synthesized products were characterized by FT-IR,XRD,SEM,TEM,N_(2) adsorption-desorption and contact angel.The results show that the SA/GO composite aerogel is a porous material with three-dimensional structure,the specific surface area is about 580.54 m^(2)·g^(−1).The influence factors of SA/GO composite aerogel on the adsorption process of methylene blue(MB)solution are discussed.Under alkaline conditions,the adsorption effect is the best,the adsorption rate can reach 99.41%,the adsorption capacity can reach 248.53 mg·g^(−1),and show excellent cyclic regeneration.

关 键 词：氧化石墨烯 海藻酸钠 亚甲基蓝 吸附 循环 复合气凝胶 

分 类 号：TB3333[一般工业技术—材料科学与工程]