ICCAS OpenIR
gamma-ray radiation-induced synthesis and Fe(III) ion adsorption of carboxymethylated chitosan hydrogels
Wang, Min1; Xu, Ling1,2; Zhai, Maolin1; Peng, Jing1; Li, Jiuqiang1; Wei, Genshuan1
2008-11-04
Source PublicationCARBOHYDRATE POLYMERS
ISSN0144-8617
Volume74Issue:3Pages:498-503
AbstractThe carboxymethylated chitosan (CMCts) hydrogels were synthesized by gamma-ray radiation-induced cross-linking at paste-like state with the concentration of CMCts from 12% to 22%. The gel fraction firstly increased with adsorbed dose and leveled off at ca. 20 kGy. The diffusion behavior of water in CMCts gels was Fickian diffusion, and the swelling of CMCts gels was affected by pH and ionic strength. Preliminary crosslinking mechanism of CMCts with gamma-ray irradiation was discussed based on the FTIR. and sol-gel analysis. The adsorption kinetics study showed that the adsorption of Fe(III) ions onto CMCts gels was very fast (ca. 20 min) due to the coordination of Fe(III) ions with amino, hydroxyl and carboxyl groups of CMCts molecules. pH 4.7 was the optimum for the adsorption of Fe(III) ions onto CMCts gels. The maximum uptake of Fe(III) ions, based on Langmuir equation, was determined to be 18.5 mg/g gel. (c) 2008 Elsevier Ltd. All rights reserved.
KeywordCarboxymethylated Chitosan Gamma-ray Radiation Hydrogel Fe(Iii) Ion adsorptIon
DOI10.1016/j.carbpol.2008.04.008
Indexed BySCI
Language英语
WOS IDWOS:000259708200025
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64568
Collection中国科学院化学研究所
Corresponding AuthorZhai, Maolin
Affiliation1.Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, BNLMS, Beijing 100871, Peoples R China
2.Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Wang, Min,Xu, Ling,Zhai, Maolin,et al. gamma-ray radiation-induced synthesis and Fe(III) ion adsorption of carboxymethylated chitosan hydrogels[J]. CARBOHYDRATE POLYMERS,2008,74(3):498-503.
APA Wang, Min,Xu, Ling,Zhai, Maolin,Peng, Jing,Li, Jiuqiang,&Wei, Genshuan.(2008).gamma-ray radiation-induced synthesis and Fe(III) ion adsorption of carboxymethylated chitosan hydrogels.CARBOHYDRATE POLYMERS,74(3),498-503.
MLA Wang, Min,et al."gamma-ray radiation-induced synthesis and Fe(III) ion adsorption of carboxymethylated chitosan hydrogels".CARBOHYDRATE POLYMERS 74.3(2008):498-503.
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