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Citation: LOU Zhenning, REN Fuqiang, WANG Jing, LI Yexia, ZHANG Qing, SHAN Weijun, XIONG Ying. Re(Ⅶ) Adsorption by Magnetic Cross-linked Chitosan Microspheres Modified with Diiobutylamine[J]. Chinese Journal of Applied Chemistry, ;2014, 31(9): 1031-1036. doi: 10.3724/SP.J.1095.2014.30604 shu

Re(Ⅶ) Adsorption by Magnetic Cross-linked Chitosan Microspheres Modified with Diiobutylamine

1.
Key Laboratory of Rare-scattered Elements of Liaoning Province, School of Chemistry, Liaoning University, Shenyang 110036, China

Corresponding author: XIONG Ying,
Received Date: 29 November 2013
Available Online: 10 March 2014
Fund Project: 国家自然科学基金(21171080,21201094) (21171080,21201094)国家科技支撑计划(2012BAF03B00) (2012BAF03B00)辽宁省高等学校优秀人才支持计划(LJQ2012001)资助项目 (LJQ2012001)

The magnetic cross-linked chitosan microspheres were prepared using Fe₃O₄ nanoparticles as cores and chitosan(CS) as polymeric shell with diisobutylamine(FCS-DIBA) modification. For the Re(Ⅶ) species coexisting with Fe(Ⅲ), Zn(Ⅱ), Mn(Ⅶ) and Cu(Ⅱ), the FCS-DIBA adsorbent exhibits selectivity only for Re(Ⅶ) among coexisting heavy metals in pH=2. The maximum adsorption capacity for Re(Ⅶ) is up to 185 mg/g, The adsorption behavior fits the Langmuir isotherm model. The mechanism for these excellent adsorption characteristics was discussed.
- rhenium,
- crab shells chitosan,
- chemical modification,
- adsorption
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