Characterization of metal ion interactions with chitosan by X-ray photoelectron spectroscopy

Dambies, Laurent; Guímon, C.; Yiacoumi, Sotira; Guibal, Eric

doi:10.1016/s0927-7757(00)00678-6

Cited by 319 publications

(156 citation statements)

References 33 publications

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“…The copper sorption is followed by a charge transfer from nitrogen to copper, resulting in a higher binding energy peak of N 1s. A similar finding was reported on the adsorption of copper onto a chitosan [28]. The binding energy of the N 1s peak assigned to -NH 2 and/or -NH groups decreases in the tetracycline-loaded chitosan, while it increases significantly in Cu-or tetracycline/Cu-loaded chitosans.…”

Section: X-ray Photoelectron Spectroscopysupporting

confidence: 87%

“…This indicates the existence of copper on the chitosan after the adsorption. Similar findings were reported for such copper compounds as Cu 2 O (932.1 eV), CuO (933.5 eV), and CuSO 4 Á5H 2 O (935.1 eV) [28,32]. The binding energies are 934.89 ± 0.3 and 933.6 eV for CuCO 3 and Cu(OH) 2 , respectively [33].…”

Section: X-ray Photoelectron Spectroscopysupporting

confidence: 80%

“…11 could be deconvoluted into three individual component peaks: 284.8 eV (C-C and/or C-H groups), 286.3-286.5 eV (C-N and/or C-O bonds), and 287.9-288.2 eV (O-C-O and/or C@O groups existing in residual chitin-like rings) [28]. The relative contents of the different groups in the absorbent were calculated and summarized in Table 3.…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

“…At neutral pH, there is only one single N 1s peak located at 399.5 eV for virgin chitosan. After being exposed to Cu(II) and/or tetracycline, the chitosan exhibits two peaks: 399.3-400.0 eV assigned to the nitrogen atoms in the forms of -NH 2 and/or -NH groups, and 401.4-401.9 eV assigned to the protonated nitrogen (ÀNH þ 3 ) (under acidic conditions) [28]. Under acidic conditions, the protonated chitosan is ineffective in the removal of such cations as copper ions.…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

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Systematic study of synergistic and antagonistic effects on adsorption of tetracycline and copper onto a chitosan

Kang

Liu

Zheng

et al. 2010

Journal of Colloid and Interface Science

245

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a b s t r a c tSorption of tetracycline and copper onto chitosan is systematically investigated in this study. The sorption of tetracycline and copper occurs rapidly in the first few hours and 90% of completed uptake occurs in the first 11-12 and 6 h, respectively. The sorption equilibrium of both contaminants is established in 24 h. The solution pH largely affects the sorption of both contaminants. The tetracycline uptake increases as pH is increased from 2.8 to 5.6, and 2.5 to 7 in the absence and the presence of copper, respectively. The presence of copper significantly improves the tetracycline adsorption likely due to the formation of cationic bridging of copper between tetracycline and chitosan. The maximum adsorption capacity and the adsorption affinity constant for tetracycline dramatically increase from 53.82 to 93.04 mmol kg À1 and from 1.22 to 10.20 L mmol À1 as the copper concentration is increased from 0 to 0.5 mmol L À1. The uptake of copper increases with an increase in pH from around 3.5-6.0 in the absence and the presence of tetracycline. The presence of tetracycline decreases the copper adsorption, which may be ascribed to the competition of tetracycline with copper ions for the adsorption sites at the chitosan surface. The adsorption isothermal data of both tetracycline and copper are fit well by the Langmuir equation. The maximum adsorption capacity and adsorption affinity constant of copper ions decrease from 1856.06 to 1486.20 mmol kg À1 and from 1.80 to 1.68 L mmol À1 in the absence and the presence of tetracycline. FTIR and XPS studies reveal that amino, hydroxyl, and ether groups in the chitosan are involved in the adsorption of tetracycline and copper.

show abstract

Section: X-ray Photoelectron Spectroscopysupporting

confidence: 87%

Section: X-ray Photoelectron Spectroscopysupporting

confidence: 80%

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

See 2 more Smart Citations

Systematic study of synergistic and antagonistic effects on adsorption of tetracycline and copper onto a chitosan

Kang

Liu

Zheng

et al. 2010

Journal of Colloid and Interface Science

245

View full text Add to dashboard Cite

show abstract

“…However, the binding ability of chitosan for copper ions was mainly due to the amine groups which were served as coordination sites for the sequestration of copper ion. [27] At lower pH, most of the amine groups in the chitosan segments was protonated and not available for copper uptaking by chelation. Thus, the values of the adsorption capacity decreased with decreasing pH.…”

Section: Adsorption Capability For Copper Ionmentioning

confidence: 99%

Infrared Analysis of Electrostatic Layer-By-Layer Polymer Membranes Having Characteristics of Heavy Metal Ion Desalination

Zhou¹,

Fu²,

Kobayashi³

2012

Infrared Spectroscopy - Materials Science, Engineering and Technology

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Biosorption, Metals

Naja¹,

Murphy²,

Volesky³

2010

Encyclopedia of Industrial Biotechnology

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Biosorption is a property of certain types of inactive, dead, microbial biomass to bind certain chemical components and thus also to concentrate heavy metals from even very dilute aqueous solutions. Certain types of biomass exhibit this property, acting just as chemical substances, as ion exchangers of biological origin. It is particularly the cell wall structure of certain algae, fungi and bacteria which was found responsible for this phenomenon. Some biomass types, serving as a basis for metal biosorption processes, can accumulate in excess of 25% of their dry weight in deposited heavy metals such as Pb, Cd, U, Cu, Zn, even Cr and others. Research on biosorption is revealing that it is sometimes a complex phenomenon where the metallic species could be deposited in the solid biosorbent through different sorption processes of ion exchange, complexation, chelation, microprecipitation, etc. A whole new family of suitably “formulated” biosorbents can be used in the process of metal removal and detoxification of industrial metal‐bearing effluents. The sorption packed‐column configuration is the most effective mode of application for the purpose. Recovery of the deposited metals from saturated biosorbent can be accomplished because they can often be easily released from the biosorbent in a concentrated wash solution which also regenerates the biosorbent for subsequent multiple reuse. This and extremely low cost of biosorbents makes the process highly economical and competitive particularly for environmental applications in detoxifying industrial metal‐bearing effluents.

show abstract

Characterization of metal ion interactions with chitosan by X-ray photoelectron spectroscopy

Cited by 319 publications

References 33 publications

Systematic study of synergistic and antagonistic effects on adsorption of tetracycline and copper onto a chitosan

Systematic study of synergistic and antagonistic effects on adsorption of tetracycline and copper onto a chitosan

Infrared Analysis of Electrostatic Layer-By-Layer Polymer Membranes Having Characteristics of Heavy Metal Ion Desalination

Biosorption, Metals

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