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Citation: CHU Dao-Bao, SHEN Guang-Xia, ZHU Qiong-Xia, ZHOU Xing-Fu, LIN Chang-Jian. Electrochemical Behavior of the Nano-TiO₂ Electrode in Different Solutions[J]. Chinese Journal of Applied Chemistry, ;2002, 19(7): 633-636. shu

Electrochemical Behavior of the Nano-TiO₂ Electrode in Different Solutions

1.
a College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000;
2.
b State Key Laboratory for Physical Chemical of Solid Surface, Department of Chemistry, Xiamen University, Xiamen

Corresponding author: CHU Dao-Bao,
Received Date: 27 November 2001
Available Online: 4 February 2002
Fund Project:

The electrochemical behavior of the nano-TiO₂ electrode in different solutions were investigated by electrochemically transient methods, such as cyclic voltammetry, cyclic Osteryoung square wave voltammetry and linear potential sweep techniques as function of acid species, acidity, potential and temperature. The results showed that there were two pairs of reversible redox peaks, which were hardly affected by the acidity and anions of acids, and E_1/2^r in non-oxidative acid solutions(H₂SO₄,HCl) was -0.52 V and -0.86 V, respectively. However, in oxidative acid solutions(H₂C₂O₄,HNO₃), there appeared a surface heterogeneous electrocatalytic behavior, but electrochemically half reversible behavior, in alkaline and neutral solutions(KOH,KCl). The nano-TiO₂ electrode behaved sluggishly in anode scan range of -0.5~1.5 V.
- nano-TiO₂ electrode,
- electrochemical behavior,
- electrocatalysis,
- cyclic voltammetry,
- cyclic Osteryoung voltammetry
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Electrochemical Behavior of the Nano-TiO₂ Electrode in Different Solutions