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  • 文献标题:   Construction of chitosan/polyacrylate/graphene oxide composite physical hydrogel by semi-dissolution/acidification/sol-gel transition method and its simultaneous cationic and anionic dye adsorption properties
  • 文献类型:   Article
  • 作　　者:   CHANG ZT, CHEN YJ, TANG SX, YANG JY, CHEN Y, CHEN SS, LI PW, YANG ZM
  • 作者关键词:   polyampholyte physical hydrogel, swelling property, mechanical property, simultaneous adsorption, wastewater treatment
  • 出版物名称:   CARBOHYDRATE POLYMERS
  • ISSN:   0144-8617 EI 1879-1344
  • 通讯作者地址:   Beijing Inst Technol
  • 被引频次:   10
  • DOI:   10.1016/j.carbpol.2019.115431
  • 出版年:   2020

▎ 摘　　要

In the current study, a novel CTS/PAA/GO composite polyampholyte physical hydrogel was prepared by the SD-A-SGT method to achieve desired adsorption properties for printing and dyeing wastewater treatment. The hydrogels exhibited controllable and stable structure. The linear PAA significantly improved the swelling and adsorption properties of the hydrogel, and the composition of GO enhanced its mechanical and adsorption properties. The batch adsorption experiments revealed the ability to simultaneously absorb the cationic model dye, MB, and anionic model dye, FY3, with the similar equilibrium adsorption capacities of 296.5 +/- 31.7 mg.g(-1) and 280.3 +/- 23.9 mg.g(-1), respectively. The factors affecting the dye adsorption performance, including the hydrogel composition, initial dye concentration and dye solution pH, were investigated. The dye adsorption kinetics was studied and the adsorption mechanisms were proposed. The unique structure and properties of the hydrogel make it a great candidate adsorbent for wastewater treatments.