• 文献标题:   Anchoring DTPA grafted PEI onto carboxylated graphene oxide to effectively remove both heavy metal ions and dyes from wastewater with robust stability
  • 文献类型:   Article
  • 作  者:   XI JF, ZHANG LY, ZHENG WT, ZENG QL, HE Y, HE Z, CHEN JY
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS SCIENCE
  • ISSN:   0022-2461 EI 1573-4803
  • 通讯作者地址:  
  • 被引频次:   9
  • DOI:   10.1007/s10853-021-06397-w EA AUG 2021
  • 出版年:   2021

▎ 摘  要

Highly efficient adsorbents, which can effectively remove both metal ions and dyes from wastewater with robust stability, are strongly required for the remediation of current polluted aqueous system, but still a challenge to be realized. Herein, a new adsorbent has been designed to solve this problem by anchoring diethylene triamine pentaacetic acid (DTPA) grafted polyethyleneimine (PEI) onto carboxylated GO (GOC-g-PD). Given the amino and carboxyl active groups from PEI and GOC/DTPA, our GOC-g-PD displays good adsorption capacity against not only inorganic metal ions (Cu2+ and Pb2+) but also organic dye (methylene blue: MB). The maximum adsorption capacity of GOC-g-PD for Cu2+, Pb2+ and MB reached 309.60 mg.g(-1), 316.17 mg.g(-1) and 262.10 mg.g(-1), respectively. Furthermore, our GOC-g-PD also exhibits good cycling stability and chemical stability against wide pH values. These outstanding properties revealed our GOC-g-PD held great potential in purifying the sewage discharged from industries.