期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 11, 期 2, 页码 434-437出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.12.012
关键词
Cathodic deposition; Anatase TiO2; EQCM; NO2-; Post-deposition annealing
资金
- National Science Council of ROC [NSC 97-2221-E-007-078-MY3]
- NTHU
The redox reaction between TiCl3 and NaNO3 to form Ti(IV) and NO2- prior to deposition in a specially designed TiCl3 + NaNO3 solution is the key step effectively promoting the cathodic deposition of porous TiO2 films. The continuous reduction of NO2- to N-2 and NH3 generates extensive OH-, enhancing the deposition rate of TiO2. The linear sweep voltammetric (LSV) and electrochemical quartz crystal microbalance (EQCM) studies reveal the electrocatalytic effect of oxy-hydroxyl-titanium already deposited onto the substrate for the NO2- and N-2 reduction. The porous and crystalline structures of as-deposited and annealed TiO2 films are examined by field-emission scanning electron microscopic (FE-SEM), transmission electron microscopic (TEM) and selected area electron diffraction (SAED) analyses. (C) 2008 Elsevier B.V. All rights reserved.
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