Adsorption mechanisms of cadmium on crosslinked chitosan templated under microwave irradiation

Hong Ying Hao; Zi Qiang Shao; Meng Chang He

Adsorption mechanisms of cadmium on crosslinked chitosan templated under microwave irradiation

Hong Ying Hao^*
, Zi Qiang Shao
, Meng Chang He

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Normal University

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

X-ray photoelectron spectroscopy, IR and chemical analysis were employe to study the adsorption mechanisms of crosslinked chitosan (CCTS_Cd) on cadmium. According to IR, it showed that -NH₂ groups of chitosan were protected by template method and others -NH₂ groups which didn't complex with cadmium ions took part in crosslinking reaction. Investigating the changes of element binding energy of O_1s, C_1s, N_1s and Cd_3d of XPS, there were chemical shifts of both N_1s and Cd_3d5/2 and Cd_3d3/2 of the sample of adsorption comparing with unadsorption, but O_1s and C_1s hadn't. At the same time, N_1s peak had a shoulder peak. The results indicate that -NH₂ groups on CCTS_Cd complexes with cadmium ions by N_1s fit spectra. The adsorption is a chemical adsorption and the experimental data fits Freundlich adsorption isotherm. The sorbent has selectivity and memory to metal ions.

Original language	English
Pages (from-to)	75-78
Number of pages	4
Journal	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
Volume	25
Issue number	1
Publication status	Published - Jan 2009

Keywords

Adsorption mechanism
Cadmium
Crosslinked chitosan
Microwave irradiation
Template method

Cite this

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title = "Adsorption mechanisms of cadmium on crosslinked chitosan templated under microwave irradiation",

abstract = "X-ray photoelectron spectroscopy, IR and chemical analysis were employe to study the adsorption mechanisms of crosslinked chitosan (CCTSCd) on cadmium. According to IR, it showed that -NH2 groups of chitosan were protected by template method and others -NH2 groups which didn't complex with cadmium ions took part in crosslinking reaction. Investigating the changes of element binding energy of O1s, C1s, N1s and Cd3d of XPS, there were chemical shifts of both N1s and Cd3d5/2 and Cd3d3/2 of the sample of adsorption comparing with unadsorption, but O1s and C1s hadn't. At the same time, N1s peak had a shoulder peak. The results indicate that -NH2 groups on CCTSCd complexes with cadmium ions by N1s fit spectra. The adsorption is a chemical adsorption and the experimental data fits Freundlich adsorption isotherm. The sorbent has selectivity and memory to metal ions.",

keywords = "Adsorption mechanism, Cadmium, Crosslinked chitosan, Microwave irradiation, Template method",

author = "Hao, \{Hong Ying\} and Shao, \{Zi Qiang\} and He, \{Meng Chang\}",

year = "2009",

month = jan,

language = "English",

volume = "25",

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journal = "Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering",

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TY - JOUR

T1 - Adsorption mechanisms of cadmium on crosslinked chitosan templated under microwave irradiation

AU - Hao, Hong Ying

AU - Shao, Zi Qiang

AU - He, Meng Chang

PY - 2009/1

Y1 - 2009/1

N2 - X-ray photoelectron spectroscopy, IR and chemical analysis were employe to study the adsorption mechanisms of crosslinked chitosan (CCTSCd) on cadmium. According to IR, it showed that -NH2 groups of chitosan were protected by template method and others -NH2 groups which didn't complex with cadmium ions took part in crosslinking reaction. Investigating the changes of element binding energy of O1s, C1s, N1s and Cd3d of XPS, there were chemical shifts of both N1s and Cd3d5/2 and Cd3d3/2 of the sample of adsorption comparing with unadsorption, but O1s and C1s hadn't. At the same time, N1s peak had a shoulder peak. The results indicate that -NH2 groups on CCTSCd complexes with cadmium ions by N1s fit spectra. The adsorption is a chemical adsorption and the experimental data fits Freundlich adsorption isotherm. The sorbent has selectivity and memory to metal ions.

AB - X-ray photoelectron spectroscopy, IR and chemical analysis were employe to study the adsorption mechanisms of crosslinked chitosan (CCTSCd) on cadmium. According to IR, it showed that -NH2 groups of chitosan were protected by template method and others -NH2 groups which didn't complex with cadmium ions took part in crosslinking reaction. Investigating the changes of element binding energy of O1s, C1s, N1s and Cd3d of XPS, there were chemical shifts of both N1s and Cd3d5/2 and Cd3d3/2 of the sample of adsorption comparing with unadsorption, but O1s and C1s hadn't. At the same time, N1s peak had a shoulder peak. The results indicate that -NH2 groups on CCTSCd complexes with cadmium ions by N1s fit spectra. The adsorption is a chemical adsorption and the experimental data fits Freundlich adsorption isotherm. The sorbent has selectivity and memory to metal ions.

KW - Adsorption mechanism

KW - Cadmium

KW - Crosslinked chitosan

KW - Microwave irradiation

KW - Template method

UR - https://www.scopus.com/pages/publications/61349195298

M3 - Article

AN - SCOPUS:61349195298

SN - 1000-7555

VL - 25

SP - 75

EP - 78

JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

IS - 1

ER -

Adsorption mechanisms of cadmium on crosslinked chitosan templated under microwave irradiation

Abstract

Keywords

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