Influence of oxytetracycline antibiotic on the surface complexation mechanism of boron on Tennessee soil: A macroscopic and in situ ATR-FTIR study

The environmental mobility of antimony (Sb) is largely unexplored in geochemical environments. Iron oxide minerals are considered major sinks for Sb. Among the different oxidation states of Sb, (+) V is found more commonly in a wide redox range. Despite many adsorption studies of Sb (V) with various iron oxide minerals, detailed research on the adsorption mechanism of Sb (V) on hematite using macroscopic, spectroscopic, and surface complexation modeling is rare. Thus, the main objective of our study is to evaluate the surface complexation mechanism of Sb (V) on hematite under a range of solution properties using macroscopic, in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopic, and surface complexation modeling. The results indicate that the Sb (V) adsorption on hematite was highest at pH 4–6. After pH 6, the adsorption decreased sharply and became negligible above pH 9. The effect of ionic strength was negligible from pH 4 to 6. The spectroscopic results confirmed the presence of inner- and outer-sphere surface complexes at lower pH values, and only outer-sphere-type surface complex at pH 8. Surface complexation models successfully predicted the Sb (V) adsorption envelope. Our research will improve the understanding of Sb (V) mobility in iron-oxide-rich environments.

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In-situ FTIR study of ethyl xanthate adsorption on sulfide minerals under conditions of controlled potential

International Journal of Mineral Processing ◽

10.1016/0301-7516(89)90032-x ◽

1989 ◽

Vol 26 (3-4) ◽

pp. 259-274 ◽

Cited By ~ 104

Author(s):

J.O. Leppinen ◽

C.I. Basilio ◽

R.H. Yoon

Keyword(s):

Sulfide Minerals ◽

In Situ Ftir ◽

Ftir Study ◽

Ethyl Xanthate ◽

Controlled Potential

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In Situ Fourier Transform Infrared (FTIR) Study of Nonthermal-Plasma-Assisted Methane Oxidative Conversion

Industrial & Engineering Chemistry Research ◽

10.1021/ie0606688 ◽

2007 ◽

Vol 46 (11) ◽

pp. 3486-3496 ◽

Cited By ~ 17

Author(s):

S. A. Nair ◽

Tomohiro Nozaki ◽

Ken Okazaki

Keyword(s):

Fourier Transform ◽

Nonthermal Plasma ◽

Fourier Transform Infrared ◽

Oxidative Conversion ◽

Ftir Study

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In situ ATR-FTIR study of H2O and D2O adsorption on TiO2 under UV irradiation

Physical Chemistry Chemical Physics ◽

10.1039/c5cp03947a ◽

2015 ◽

Vol 17 (35) ◽

pp. 22940-22946 ◽

Cited By ~ 35

Author(s):

Hamza Belhadj ◽

Amer Hakki ◽

Peter K. J. Robertson ◽

Detlef W. Bahnemann

Keyword(s):

Ftir Spectroscopy ◽

Uv Irradiation ◽

Deuterium Oxide ◽

Ftir Study ◽

Adsorption Of Water

The adsorption of water and deuterium oxide on TiO2 surfaces was investigated in the dark as well as under UV(A) irradiation using in situ ATR-FTIR spectroscopy under oxygen and oxygen free conditions.

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