Studies of ternary surface complexes at liquid-solid interfaces in seawater. 3: Comparative studies of the E(%)-pH curves and the diffuse reflectance IR spectra of the {alpha}-FeOOH-Cu(II)-tryptophan system

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Journal of Colloid and Interface Science

DOI:https://doi.org/10.1006/jcis.1997.4827· OSTI ID:514738

Zhengbin, Zhang; Wei, Wang; Liansheng, Liu; Youjun, Fu; Zhijian, Wu ^[1]

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1. Ocean Univ. of Qingdao (China). Inst. of Marine Chemistry

The E(%)-pH curves of the ternary surface complexes at liquid-solid interfaces in the simulated seawater system of {alpha}-FeOOH-Cu(II)-tryptophan were determined. The diffuse reflectance IR spectra of the species at the solid surfaces in the above ternary equilibration system were examined. The above two results were comparatively studied. It is shown that the coadsorption of Cu(II) and tryptophan on {alpha}0FeOOH surface results in the formation of the ternary surface complex. Cu(II) can promote the exchange adsorption of tryptophan on {alpha}-FeOOH surface. The diffuse reflectance IR spectra can give one some evidence for the structure of the ternary surface complex, and these results are in accordance with the results of the E(%)-pH curves.

• OSTI ID: 514738
• Journal Information: Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 1 Vol. 190; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ADSORPTION
CATALYTIC EFFECTS
COPPER
ENVIRONMENTAL TRANSPORT
INTERFACES
IRON HYDROXIDES
PH VALUE
SEAWATER
SORPTIVE PROPERTIES
TRYPTOPHAN