Dopamine crosslinked graphene oxide membrane for simultaneous removal of organic pollutants and trace heavy metals from aqueous solution
Dopamine crosslinked graphene oxide membrane for simultaneous removal of organic pollutants and trace heavy metals from aqueous solution
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DOI：
10.1080/09593330.2017.1371797
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发表时间：
2018-12-02
影响因子：
2.8
通讯作者：
Hou, Li'an
中科院分区：
文献类型：
--
作者：
Wang, Jing;Huang, Tiefan;Hou, Li'an
采用滴包法制备了氧化石墨烯-聚多巴胺- - -环糊精（GPC）超滤膜。用FTIR和XPS对制备的GPC膜进行了表征，并对其吸附有机分子（亚甲基蓝）和痕量重金属（Pb2+）的性能进行了评价。该膜对亚甲基蓝的截留系数为99.2%，在0.1 bar下的渗透通量为12 L m(-2) h（-1）。该膜对Pb2+也表现出快速的吸附动力学，在pH = 6时吸附量为101.6 mg g（-1）。经过简单的清洁和再生过程，膜的性能几乎可以完全恢复。这些结果表明，GPC膜在处理复杂的工业废水流方面具有潜在的应用前景。
A graphene oxide-polydopamine-(beta-cyclodextrin) (GPC) ultrafiltration membrane was fabricated by using the method of drop-coating combined with vacuum filtration. The prepared GPC membrane was characterized with FTIR and XPS spectrophotometry and evaluated for its performances for the rejection of organic molecules (methylene blue) and adsorption of trace heavy metals (Pb2+) from aqueous solutions. The membrane exhibited an excellent rejection coefficient of 99.2% for methylene blue and the permeation flux was 12 L m(-2) h(-1) at 0.1 bar. The membrane also exhibited fast adsorption kinetics for Pb2+ and the adsorption capacity was 101.6 mg g(-1) at a solution pH of 6. The performance of the membrane could almost be completely recovered after a simple clean and regeneration process. These results indicate that the GPC membrane has potential applications in treatment of complex industrial wastewater streams.[GRAPHICS].