An ATR-FTIR spectroscopic study of the competitive adsorption between oxalate and malonate at the water-goethite interface
(2006) In Journal of Colloid and Interface Science 294. p.31-37- Abstract
- The competitive adsorption between oxalate and malonate at the water-goethite interface was studied as a function of pH and total ligand concentrations by means of quantitative adsorption measurements and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The results obtained show that ATR-FTIR spectroscopy resolves the individual spectroscopic features of oxalate and malonate when adsorbed simultaneously at the water-goethite interface. The characteristic peaks of all four types of predominating surface complexes existing in the single ligand systems were identified, namely one inner sphere and one outer sphere surface complex for each ligand. The quantitative adsorption data showed that oxalate partially... (More)
- The competitive adsorption between oxalate and malonate at the water-goethite interface was studied as a function of pH and total ligand concentrations by means of quantitative adsorption measurements and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The results obtained show that ATR-FTIR spectroscopy resolves the individual spectroscopic features of oxalate and malonate when adsorbed simultaneously at the water-goethite interface. The characteristic peaks of all four types of predominating surface complexes existing in the single ligand systems were identified, namely one inner sphere and one outer sphere surface complex for each ligand. The quantitative adsorption data showed that oxalate partially out-competes malonate at the water-goethite interface. Evaluation of the peak area variations as a function of pH indicated that the stronger oxalate adsorption can be ascribed to the more stable inner sphere surface complex of oxalate, which in turn is related to the oxalate five-member chelate ring structure yielding a more stable complex compared to the six-member ring of malonate. (c) 2005 Elsevier Inc. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4332490
- author
- Axe, K. ; Vejgarden, M. and Persson, Per LU
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Colloid and Interface Science
- volume
- 294
- pages
- 31 - 37
- publisher
- Elsevier
- external identifiers
-
- scopus:28244478049
- ISSN
- 1095-7103
- DOI
- 10.1016/j.jcis.2005.07.013
- language
- English
- LU publication?
- no
- additional info
- 1
- id
- 0e2397a7-f832-41c7-b076-7cb56fee92b0 (old id 4332490)
- date added to LUP
- 2016-04-01 12:04:11
- date last changed
- 2022-01-26 22:18:35
@article{0e2397a7-f832-41c7-b076-7cb56fee92b0, abstract = {{The competitive adsorption between oxalate and malonate at the water-goethite interface was studied as a function of pH and total ligand concentrations by means of quantitative adsorption measurements and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The results obtained show that ATR-FTIR spectroscopy resolves the individual spectroscopic features of oxalate and malonate when adsorbed simultaneously at the water-goethite interface. The characteristic peaks of all four types of predominating surface complexes existing in the single ligand systems were identified, namely one inner sphere and one outer sphere surface complex for each ligand. The quantitative adsorption data showed that oxalate partially out-competes malonate at the water-goethite interface. Evaluation of the peak area variations as a function of pH indicated that the stronger oxalate adsorption can be ascribed to the more stable inner sphere surface complex of oxalate, which in turn is related to the oxalate five-member chelate ring structure yielding a more stable complex compared to the six-member ring of malonate. (c) 2005 Elsevier Inc. All rights reserved.}}, author = {{Axe, K. and Vejgarden, M. and Persson, Per}}, issn = {{1095-7103}}, language = {{eng}}, pages = {{31--37}}, publisher = {{Elsevier}}, series = {{Journal of Colloid and Interface Science}}, title = {{An ATR-FTIR spectroscopic study of the competitive adsorption between oxalate and malonate at the water-goethite interface}}, url = {{http://dx.doi.org/10.1016/j.jcis.2005.07.013}}, doi = {{10.1016/j.jcis.2005.07.013}}, volume = {{294}}, year = {{2006}}, }