Open AccessPreparation and Electrochemical Properties of TiO2/BDD Composite Film Materials
Author(s) -
Yuxiang Ma,
Hailong Wang,
Yanjun Zhao,
Ning Yan
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/678/1/012165
Subject(s) - materials science , raman spectroscopy , scanning electron microscope , electrochemistry , titanium , deposition (geology) , diamond , chemical engineering , electrode , analytical chemistry (journal) , composite material , metallurgy , chemistry , optics , paleontology , physics , chromatography , sediment , biology , engineering
Boron-doped diamond (BDD) has important applications in the catalytic degradation of wastewater. In this paper, the TiO 2 was electro-phoretically deposited onto the silicon-based BDD film by anelectrophoretic deposition method using a butyl titanate (TBOT) as the titanium source. The effect of the deposition time on the electrochemical properties of the TiO 2 /BDD composites was investigated. The phase and morphology were characterized by X-ray diffraction, laser Raman spectroscopy, and scanning electron microscopy. The electrical and electrochemical properties were characterized by Hall measurement system and electrochemical analyzer. The results showed that the performance of TiO 2 /BDD composites was significantly higher than that of single BDD electrode materials. The morphology of TiO 2 films obtained by TiO 2 deposition three times was better.The Hall mobility of most samples has been improved, and the Hall mobility of sample 4 increased to 213 cm 2 /V·s, which is 3.5 times of the single BDD materials. The electrochemical potential window of sample 4 in alkaline, acidic and neutral electrolyte are 4.6 V, 4.3 V, 4.6 V.