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Cited by 27Adsorption and biosorption for pollutant removalIron oxide chemistry and applicationsEnvironmental remediation with nanomaterials

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

Interaction of Zn(II) with Hematite Nanoparticles and Microparticles: Part 2. ATR-FTIR and EXAFS Study of the Aqueous Zn(II)/Oxalate/Hematite Ternary System

Ha, Juyoung, Trainor, Thomas P., Farges, François, Brown, Gordon E.·2009·Langmuir
DOI 10.1021/la802895a
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Abstract

Sorption of Zn(II) to hematite nanoparticles (HN) (av diam=10.5 nm) and microparticles (HM) (av diam=550 nm) was studied in the presence of oxalate anions (Ox2-(aq)) in aqueous solutions as a function of total Zn(II)(aq) to total Ox2-(aq) concentration ratio (R=[Zn(II)(aq)]tot/[Ox2-(aq)]tot) at pH 5.5. Zn(II) uptake is similar in extent for both the Zn(II)/Ox/HN and Zn(II)/Ox/HM ternary systems and the Zn(II)/HN binary system at [Zn(II)(aq)](tot)<4 mM, whereas it is 50-100% higher for the Zn(II)/Ox/HN system than for the Zn(II)/Ox/HM ternary and the Zn(II)/HN and Zn(II)/HM binary systems at [Zn(II)(aq)]tot>4 mM. In contrast, Zn(II) uptake for the Zn(II)/HM binary system is a factor of 2 greater than that for the Zn(II)/Ox/HM and Zn(II)/Ox/HN ternary systems and the Zn(II)/HN binary system at [Zn(II)(aq)]tot<4 mM. In the Zn(II)/Ox/HM ternary system at both R values examined (0.16 and 0.68), attenuated total reflectance Fourier transform infrared (ATR-FTIR) results are consistent with the presence of inner-sphere oxalate complexes and outer-sphere ZnOx(aq) complexes, and/or type A ternary complexes. In addition, extended X-ray absorption fine structure (EXAFS) spectroscopic results suggest that type A ternary surface complexes (i.e., >O2-Zn-Ox) are present. In the Zn(II)/Ox/HN ternary system at R=0.15, ATR-FTIR results indicate the presence of inner-sphere oxalate and outer-sphere ZnOx(aq) complexes; the EXAFS results provide no evidence for inner-sphere Zn(II) complexes or type A ternary complexes. In contrast, ATR-FTIR results for the Zn/Ox/HN sample with R = 0.68 are consistent with a ZnOx(s)-like surface precipitate and possibly type B ternary surface complexes (i.e., >O2-Ox-Zn). EXAFS results are also consistent with the presence of ZnOx(s)-like precipitates. We ascribe the observed increase of Zn(II)(aq) uptake in the Zn(II)/Ox/HN ternary system at [Zn(II)(aq)]tot>or=4 mM relative to the Zn(II)/Ox/HM ternary system to formation of a ZnOx(s)-like precipitate at the hematite nanoparticle/water interface.

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Citations

Cites

Research works printed but not linked: 6

  1. Ha J., Langmuir
  2. Webb S., 2004, Phys. Scr., 115, 1011
  3. Kondrashev Yu. D., 1985, Zh. Strukt. Khim., 26, 90
  4. Lenhart J. J., 2001, J. Colloid Interface Sci., 234, 448, 10.1006/jcis.2000.7345 · DOI
  5. Stumm W., 1983, Croat. Chem. Acta, 56, 593
  6. Blake R. L., 1966, Am. Mineral., 51, 123

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Metadata

Authors
Ha, J., Trainor, T. P., Farges, F., & Brown, G. E.
Affiliations
  • Stanford University (US)
  • University of Alaska Fairbanks (US)
  • Centre National de la Recherche Scientifique (FR)
  • SLAC National Accelerator Laboratory (US)
Corresponding author
Ha, Juyoung
ORCID
Ha, Juyoung
Venue
Langmuir
Publisher
American Chemical Society (ACS)
Published
2009-03-30
Volume
25
Issue
10
Pages
5586-5593
ISSN
  • 0743-7463 (ISSN-L)
  • 1520-5827
DOI
10.1021/la802895a
OpenAlex
W1989284934
Cited by
26
References
38
Citations by year
2026: 1 · 2023: 1 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 1 · 2018: 5 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 1 · 2012: 3
FWCI
2.40
Type
journal article
Language
en
Open access
closed
Locations
  • Langmuir (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Materials Science › Materials Chemistry › Iron oxide chemistry and applications
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
Keywords
hematite nanoparticles, oxalate, ternary surface complexes, inner-sphere complexes, outer-sphere complexes, zinc adsorption, surface complexation, EXAFS, ATR-FTIR spectroscopy, pH 5.5, ternary systems, iron oxide, adsorption selectivity, particle size

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