Formation of nanocrystalline tetragonal oxide tungsten bronzes on platinum
Abstract
Cyclic voltammetry is used to study the formation of tetragonal oxide tungsten bronze of the composition K x Na y WO3 on a Pt(110) substrate during electrodeposition from a K2WO4-Na2WO4-WO3 melt. The potential ranges in which cathode products of various compositions and morphologies form are found. K x Na(0.66- x)WO3 crystals are shown to form according to the nucleation/growth mechanism. A general scheme is proposed and used to write equations for cathode reactions.
- Publication:
-
Russian Metallurgy
- Pub Date:
- February 2017
- DOI:
- 10.1134/S0036029517020070
- Bibcode:
- 2017RuMet2017..158K
- Keywords:
-
- electrolysis of melts;
- oxide tungsten bronze;
- tetragonal structure;
- nanocrystals;
- nanofilms;
- cyclic voltammetry