REGULARITIES OF Na2MoO4 ONTO Se|SnO2|GLASS SURFACE

Authors

  • V. Sinkevičiūtė Kaunas University of Technology
  • N. Dukštienė Kaunas University of Technology
  • J. Baltrušaitis Centrinė mikroskopijos tyrimų laboratorija, Ajovos universitetas, 76 EMRB, Ajova IA 52242
  • A. Guobienė Kaunas University of Technology

Abstract

Na2MoO4 electrochemical reduction from 0.22 mol/dm3 sodium citrate supporting solution was investigated by the cyclic voltammetry, X-ray photoelectron spectroscopy and lateral force microscopy techniques. Experimental results have indicated that molybdenum oxide is initially deposited on the Se|SnO2|glass surface in a potential range from -0.20 V to -0.80 V. XPS analysis exhibited the molybdenum oxide stoichiometry of 2.9.

The nucleation mechanism of MoOx onto Se|SnO2|glass surface was investigated by the current transient technique. The deposition transients analyzed in the non-dimensional plots I2/I2m=f(t/tm) and I2/I2m=f(t/tm)2 have shown that MoOx nucleates according to a progressive mechanism. The nucleation rate depends on Na2MoO4 concentration in the supporting electrolyte and on the deposition potential.

Author Biographies

V. Sinkevičiūtė, Kaunas University of Technology

N. Dukštienė, Kaunas University of Technology

J. Baltrušaitis, Centrinė mikroskopijos tyrimų laboratorija, Ajovos universitetas, 76 EMRB, Ajova IA 52242

A. Guobienė, Kaunas University of Technology

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Published

2010-03-16

Issue

Section

TECHNOLOGY OF INORGANIC MATERIALS