On the anomalous adsorption of [Pd(edta)](2-) at the water/goethite interface: Spectroscopic evidence for two types of surface complexes
(2008) In Langmuir 24. p.483-489- Abstract
- The structure of palladium(II) ethylenediaminetetraacetate (edta) in aqueous solutions and its adsorption on the surface of goethite (alpha-FeOOH) were studied using extended X-ray absorption fine structure spectroscopy and attenuated total reflection Fourier transform infrared spectroscopy. The obtained results show that in aqueous solutions, Pd-edta exists as a 1:1 complex, [P(edta)](2-), with edta acting as a quadridentate ligand. On the surface of goethite, [Pd(edta)](2-) forms two different types of complexes over a pH range of 3.40-8.12. At pH < 5, [Pd(edta)](2-) adsorbs as an outer-sphere species with possible hydrogen bonding. At higher pH values, the formation of inner-sphere complexes of the cation-type sets in after a... (More)
- The structure of palladium(II) ethylenediaminetetraacetate (edta) in aqueous solutions and its adsorption on the surface of goethite (alpha-FeOOH) were studied using extended X-ray absorption fine structure spectroscopy and attenuated total reflection Fourier transform infrared spectroscopy. The obtained results show that in aqueous solutions, Pd-edta exists as a 1:1 complex, [P(edta)](2-), with edta acting as a quadridentate ligand. On the surface of goethite, [Pd(edta)](2-) forms two different types of complexes over a pH range of 3.40-8.12. At pH < 5, [Pd(edta)](2-) adsorbs as an outer-sphere species with possible hydrogen bonding. At higher pH values, the formation of inner-sphere complexes of the cation-type sets in after a cleavage of one glycinate ring and the formation of an (edta)Pd-O-Fe linkage. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4332422
- author
- Kaplun, Marina ; Nordin, Agneta and Persson, Per LU
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Langmuir
- volume
- 24
- pages
- 483 - 489
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:38749142143
- ISSN
- 0743-7463
- DOI
- 10.1021/la702735y
- language
- English
- LU publication?
- no
- additional info
- 2
- id
- acbe28b2-3c68-48e8-a04d-0b5360578b12 (old id 4332422)
- date added to LUP
- 2016-04-01 12:03:01
- date last changed
- 2022-01-26 22:01:55
@article{acbe28b2-3c68-48e8-a04d-0b5360578b12, abstract = {{The structure of palladium(II) ethylenediaminetetraacetate (edta) in aqueous solutions and its adsorption on the surface of goethite (alpha-FeOOH) were studied using extended X-ray absorption fine structure spectroscopy and attenuated total reflection Fourier transform infrared spectroscopy. The obtained results show that in aqueous solutions, Pd-edta exists as a 1:1 complex, [P(edta)](2-), with edta acting as a quadridentate ligand. On the surface of goethite, [Pd(edta)](2-) forms two different types of complexes over a pH range of 3.40-8.12. At pH < 5, [Pd(edta)](2-) adsorbs as an outer-sphere species with possible hydrogen bonding. At higher pH values, the formation of inner-sphere complexes of the cation-type sets in after a cleavage of one glycinate ring and the formation of an (edta)Pd-O-Fe linkage.}}, author = {{Kaplun, Marina and Nordin, Agneta and Persson, Per}}, issn = {{0743-7463}}, language = {{eng}}, pages = {{483--489}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Langmuir}}, title = {{On the anomalous adsorption of [Pd(edta)](2-) at the water/goethite interface: Spectroscopic evidence for two types of surface complexes}}, url = {{http://dx.doi.org/10.1021/la702735y}}, doi = {{10.1021/la702735y}}, volume = {{24}}, year = {{2008}}, }