Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (1): 90-97.DOI: 10.11944/j.issn.1000-0518.2017.01.160447

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Preparation of Thiol/Oxidized Cellulose Adsorbent and Selective Adsorption of Ag(Ⅰ) in Chlorination System

ZHANG Yingying,LI Xinyu,WAN Li,ZHANG Peng,LOU Zhenning,SHAN Weijun,XIONG Ying()   

  1. Key Laboratory of Rare-scattered Elements of Liaoning Province,College of Chemistry,Liaoning University,Shenyang 110036,China
  • Received:2016-11-07 Accepted:2016-11-11 Published:2017-01-03 Online:2017-01-03
  • Contact: XIONG Ying
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51674131, No.21171080, No.21201094), National Science & Technology Pillar Program(No.2015BAB02B03), Program for Liaoning Excellent Talents in University(No.LR2015026), Liaoning Provincial Department of Education Innovation Team Projects(No.LT2015012), Liaoning BaiQianWan Talents Program(No.2014)

Abstract:

A series of adsorbents based on waste paper cellulose was prepared by oxidative ring-opening, amination and sulfhydrylation reaction. The adsorption capacity of the cellulose modified by amino thiourea/glutaraldehyde on coordination anion AgCl43- is the best in both the single system and the mixed system containing high levels of Cu(Ⅱ) and Ni(Ⅱ) chlorides. The maximum adsorption capacity of Ag(Ⅰ) can reach 171.16 mg/g. Reasons for different adsorption effects and the electrostatic adsorption mechanism of coordination anion Ag(Ⅰ) on the adsorbent were discussed based on IR, XPS and thermodynamics and so on, which can be ascribed to the electrostatic interaction between AgCl43- and the protonated thiol group of thiolmide group.

Key words: Ag(Ⅰ) chloride anion, cellulose, chlorination liquid, selective adsorption