Synthesis and electrochemistry study for La doped RuO2-TiO2/Ti coatings

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Published: Sep 24, 2018
DOI: https://doi.org/10.2298/JSC170831033J
Keywords:
La-doped RuO2-TiO2/Ti coating synthesis thermal decomposition cyclic voltammetry (CV) polarization measurements

Main Article Content

Xiaoyu Jiang
College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou
Shuai Li
College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou
Zhigang Zhang
College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou
Hang Xiao
College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou
Weiqing Wu
College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou
Lang Lin
College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou
Xiaoyuan Wu
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian
Wei Li
College of the Material Science and Technology, Fujian University of Technology, Fuzhou
Lei Zhang
College of Materials Science and Engineering, Fujian University of Technology, Fuzhou
Wenzhe Chen
College of Materials Science and Engineering, Fujian University of Technology, Fuzhou

Abstract

La-doped RuO2–TiO2/Ti coating (TRL) and RuO2–TiO2/Ti coating (TR) were prepared by the sol–gel method and thermal treatment. The products were characterized by X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM). The electrochemical properties were investigated by cyclic voltammetry and polarization measurements in O2 and Cl2 evolution in H2SO4 and NaCl solution. The XRD analysis showed that in both TRL and TR, the particles of the synthesized coatings were of low crystallinity, and that they were mainly formed of two phases, rutile TiO2 and RuO2. SEM confirmed that the surface of TRL and TR coatings had a cracked mud appearance con­sisting of blocks separated by cracks. The morphology of the TRL coating shows irregular crack blocks, which increased the specific area greatly and pro­vides more active sites. Polarization measurements indicate that the onset pot­ential of chlorine evolution reaction for TRL coating was 1.08 VSCE, which is lower than the value of 1.12 VSCE registered for the TR coating. The onset poten­tials for oxygen evolution for the two coatings were similar. Cyclic voltam­metry shows an improvement of the electrochemical capacity for the La-doped coatings.

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How to Cite
[1]
X. Jiang, “Synthesis and electrochemistry study for La doped RuO2-TiO2/Ti coatings”, J. Serb. Chem. Soc., vol. 83, no. 9, pp. 995–1003, Sep. 2018.
Issue
Vol. 83 No. 9 (2018)
Section
Electrochemistry

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Author Biography

Xiaoyu Jiang, College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou

Dr. Xiao-Yu Jiang, female, is a professor and majored in chemistry and materials science. She teaches in College of the Ecology and Environment Engineering, Fujian University of  Technology, Fuzhou, Fujian, China.

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