Skip to main content Accessibility help
×
Home

X-ray absorption spectroscopy studies for the determination of adsorption binding modes of selenium oxoanions onto iron and manganese based nanomaterials

  • Christina M. Gonzalez (a1), Jason G. Parsons (a2), Jeffrey Hernandez (a1) and Jorge L. Gardea-Torresdey (a1) (a3)

Abstract

Increasing concentrations of selenium oxoanions in the environment are placing many animals at risk for reproduction failure and deformities. The understanding of binding mechanisms of selenium oxoanions to iron and manganese based oxide minerals could lead to enhanced understanding of selenium mobility in the environment. In this study, the binding mechanisms of selenium oxoanions, selenite and selenate, to non microwave-assisted and microwave-assisted synthetic Fe3O4, Mn3O4, and MnFe2O4 nanomaterials were investigated through the use of X-ray absorption spectroscopy. The X-ray absorption near-edge structure (XANES) spectroscopy studies revealed the oxidation state of selenite and selenate remains the same after binding occurs to all nanomaterials in pH 2, 4, or 6 environments. The binding modes of selenite and selenate were determined to be bidentate binuclear through use of Extended x-ray absorption fine structure (EXAFS) and were independent of nanomaterials, synthetic technique, and pH.

Copyright

Corresponding author

References

Hide All
1. Dash, S. S. and Parida, K. M., J. Colloid Interface Sci. 307, 333 (2007).
2. Ippolito, J. A., Scheckel, K. G., and Barbarick, K. A., J. Colloid Interface Sci. 338, 48 (2009).
3. Lopez de Arroyabe Loyo, R., Nikitenko, S. I., Scheinost, A. C., and Simonoff, M., Environ. Sci. Technol. 42, 2451 (2008).
4. Peak, D., J. Colloid Interface Sci. 303, 337 (2006).
5. Wijnja, H. and Schulthess, C. P., J. Colloid Interface Sci. 229, 286 (2000).
6. Foster, A. L., Brown, G. E., and Parks, G. A., Geochim. Cosmochim. Acta 67, 1937 (2003).
7. Hayes, K. F., Roe, A. L., Brown, G. E., Hodgson, K. O., Leckie, J. O., and Parks, G. A., Science 238, 783 (1987).
8. Gonzalez, C. M., Hernandez, J., Parsons, J. G., and Gardea-Torresdey, J. L., Microchem. J. 96, 324 (2010).
9. Gonzalez, C. M., Hernandez, J., Peralta-Videa, J. R., Botez, C. E., Parsons, J. G., and Gardea-Torresdey, J. L., J. Hazard. Mater. 211212, 138 (2012).
10. Gonzalez, C. M., Hernandez, J., Parsons, J. G., and Gardea-Torresdey, J. L., Instrum. Sci. Techn. 39, 1, 1 (2011).
11. Ressler, T., J.Synchrotron Radiat. 5, 118 (1998).10.1107/S0909049597019298
12. Ankudinov, A.L., Ravel, B.J., Rehr, J.L., and Conradson, S.D., Phys. Rev. B, 58, 7565 (1998).
13. Bazin, D., Sayers, D., Rehr, J. J., and Mottet, C., J. Phys. Chem. B 101, 5332 (1997).10.1021/jp963949+
14. Christensen, C. R., Cutler, J. N., and Christensen, D. A., Can. J. Anim. Sci. 84, 171, (2004).
15. Webb, S. M., Gaillard, J., Ma, L. Q., and Tu, C., Environ. Sci. Technol. 37, 745 (2003).
16. Lopez De Arroyaboyo, R., Nikitenko, S. I., A. C. Environ. Sci. Technol. 42, 2451 (2008).
17. Charlet, L., Scheinost, A.C., Tournassat, C., Greneche, J.M., Ge´hin, A., Ferna´ndez-Martinez, A., Coudert, S., Tisserand, D., and Brendle, J.. Geochim. Cosmochim. Acta 71, 5731 (2007).
18. Waychunas, G. A., Kim, C. S. and Banfield, J.F.. J. Nanopart. Res. 7, 409 (2005.)
19. Missana, T., Alonso, U., Scheinost, A.C., Granizo, N., and Garcıia-Gutierrez, M., Geochim. Cosmochim. Acta 73, 6205 (2009).

Keywords

X-ray absorption spectroscopy studies for the determination of adsorption binding modes of selenium oxoanions onto iron and manganese based nanomaterials

  • Christina M. Gonzalez (a1), Jason G. Parsons (a2), Jeffrey Hernandez (a1) and Jorge L. Gardea-Torresdey (a1) (a3)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed