Fabrication of macroporous polystyrene/graphene oxide composite monolith and its adsorption property for tetracycline  

作　　者：Le-Chen Chen Shan Lei Mo-Zhen Wang Jun Yang Xue-Wu Ge 

机构地区：[1]The USTC-Anhui Tobacco Joint Laboratory of Tobacco Chemistry, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China [2]The USTC-Anhui Tobacco Joint Laboratory of Tobacco Chemistry, Research Center of Tobacco and Health, University of Science and Technology of China

出　　处：《Chinese Chemical Letters》2016年第4期511-517,共7页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 51073146, 51103143, 51173175, 51473152, and 51573174);the Fundamental Research Funds for the Central Universities (Nos. WK2060200012 and WK3450000001);the Foundation of Anhui Key Laboratory of Tobacco Chemistry (China Tobacco Anhui Industrial Co., Ltd.) (No. 2014126)

摘　　要：Macroporous polystyrene microsphere/graphene oxide（PS/GO） composite monolith was first prepared using Pickering emulsion droplets as the soft template. The Pickering emulsion was stabilized by PS/GO composite particles in-situ formed in an acidic water phase. With the evaporation of water and the oil phase（octane）, the Pickering emulsion droplets agglomerated and combined with each other, forming a three-dimensional macroporous PS/GO composite matrix with excellent mechanical strength. The size of the macrospores ranged from 4 mm to 20 mm. The macroporous PS/GO composite monolith exhibited high adsorption capacity for tetracycline（TC） in an aqueous solution at p H 4–6. The maximum adsorption capacity reached 197.9 mg g 1at p H 6. The adsorption behaviour of TC fitted well with the Langmuir model and pseudo-second-order kinetic model. This work offers a simple and efficient approach to fabricate macroporous GO-based monolith with high strength and adsorption ability for organic pollutants.Macroporous polystyrene microsphere/graphene oxide（PS/GO） composite monolith was first prepared using Pickering emulsion droplets as the soft template. The Pickering emulsion was stabilized by PS/GO composite particles in-situ formed in an acidic water phase. With the evaporation of water and the oil phase（octane）, the Pickering emulsion droplets agglomerated and combined with each other, forming a three-dimensional macroporous PS/GO composite matrix with excellent mechanical strength. The size of the macrospores ranged from 4 mm to 20 mm. The macroporous PS/GO composite monolith exhibited high adsorption capacity for tetracycline（TC） in an aqueous solution at p H 4–6. The maximum adsorption capacity reached 197.9 mg g 1at p H 6. The adsorption behaviour of TC fitted well with the Langmuir model and pseudo-second-order kinetic model. This work offers a simple and efficient approach to fabricate macroporous GO-based monolith with high strength and adsorption ability for organic pollutants.

关 键 词：Graphene oxide Polystyrene microsphere Macroporousm ADSORPTION TETRACYCLINE 

分 类 号：TB332[一般工业技术—材料科学与工程] O647.3[理学—物理化学]