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Microwave-electrochemical formation of colloidal zinc oxide at fluorine doped tin oxide electrodes


Reference:

Rassaei, L., Jaber, R., Flower, S. E., Edler, K. J., Compton, R. G., James, T. D. and Marken, F., 2010. Microwave-electrochemical formation of colloidal zinc oxide at fluorine doped tin oxide electrodes. Electrochimica Acta, 55 (27), pp. 7909-7915.

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http://dx.doi.org/10.1016/j.electacta.2010.01.068

Abstract

Colloidal ZnO is obtained during microwave-enhanced electrochemical deposition experiments from an aqueous solution containing 0 1 M Zn(NO3)(2) and 0 02 M H2O2 via repetitive negative going potential cycles from 03 to 0 8 V vs SCE The effects of temperature and temperature gradients on ZnO electro formation at fluorine doped tin oxide (FTO) electrodes are investigated with both a con ventional thermostated bath system (isothermal) and an in situ microwave electrochemistry system (non-isothermal) Mainly electrodeposition of ZnO is observed in uniformly heated stagnant solution and predominantly the electro-formation of ZnO colloid is observed in the presence of microwave-induced temperature gradients in a flowing solution For the ZnO colloid prepared via microwave activation SAXS data suggests an average particle radius of ca 18 nm The increase of ZnO nanoparticle concentration during repetitive potential scans is followed by photoluminescence spectroscopy A possible mechanism for ZnO colloid formation during electrochemical reduction of H2O2 is suggested

Details

Item Type Articles
CreatorsRassaei, L., Jaber, R., Flower, S. E., Edler, K. J., Compton, R. G., James, T. D. and Marken, F.
DOI10.1016/j.electacta.2010.01.068
Uncontrolled Keywordscontrolled colloidal synthesis, electrodeposition, microwave synthesis, voltammetry, fto, zinc oxide nanoparticles, electrosynthesis, saxs, zinc oxide film
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code22180
Additional Information60th Annual Meeting of ISE. 16-21 August 2009. Beijing, China.

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