Electrochemical generation of ozone at PbO2-loaded platinum screens

被引：37
作者：
Awad, Mohamed I. [1 ]
Saleh, Mahmoud M. [1 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Chem, Cairo, Egypt
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2010年 / 14卷 / 10期
关键词：
Ozone; Oxygen; Electrolysis; Pt screen; Pb; OXYGEN EVOLUTION REACTION; ACID; ELECTRODES; OZONATION; OXIDATION; KINETICS; ELECTROLYSIS; WATER; ELECTROGENERATION; BEHAVIOR;
D O I：
10.1007/s10008-010-1030-z
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Ozone (O-3) has been electrochemically generated on PbO2-loaded Pt screens (PbO2/Pts) at 25 A degrees C from H2SO4 solutions. The PbO2/Pts electrodes were electrochemically and morphologically characterized by cyclic voltammetry and scanning electron microscopy (SEM), respectively. Different loadings of PbO2 and different acid concentrations (C (acid)) were used in this study. Higher efficiency (8%) for O-3 electrogeneration was obtained at an applied potential of 1.8 V, higher C (acid), and loading density of PbO2 a parts per thousand yenaEuro parts per thousand 9.3 mu mol cm(-2) (of Pt screen) at room temperature. The stability of the prepared electrode was examined under the present experimental conditions. SEM images and current transients showed reasonable electrochemical and mechanical stability of the PbO2/Pts. The data were discussed in the light of results obtained on planar Pt electrode at similar conditions.
引用
收藏
页码：1877 / 1883
页数：7
相关论文
共 38 条
[1]   Oxygen and ozone evolution at fluoride modified lead dioxide electrodes [J].
Amadelli, R ;
Armelao, L ;
Velichenko, AB ;
Nikolenko, NV ;
Girenko, DV ;
Kovalyov, SV ;
Danilov, FI .
ELECTROCHIMICA ACTA, 1999, 45 (4-5) :713-720
[2]   HETEROGENEOUS ACID-BASE EQUILIBRIA AND REACTION ORDER OF OXYGEN EVOLUTION ON OXIDE ELECTRODES [J].
ANGELINETTA, C ;
FALCIOLA, M ;
TRASATTI, S .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 205 (1-2) :347-353
[3]   Electroanalysis of peroxone [J].
Awad, MI ;
Ohsaka, T .
ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (11) :1135-1140
[4]   Simultaneous potentiometric determination of peracetic acid and hydrogen peroxide [J].
Awad, MI ;
Oritani, T ;
Ohsaka, T .
ANALYTICAL CHEMISTRY, 2003, 75 (11) :2688-2693
[5]   Ozone electrogeneration on pt-loaded reticulated vitreous carbon using flooded and flow-through assembly [J].
Awad, Mohamed Ismail ;
Saleh, Mahmoud M. ;
Ohsaka, Takeo .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (12) :D207-D212
[6]   Ozone electrogeneration at a high current efficiency using a tantalum oxide-platinum composite electrode [J].
Awad, Mohamed Ismail ;
Sata, Shunsuke ;
Kaneda, Kazuhiro ;
Ikematsu, Mineo ;
Okajima, Takeoshi ;
Ohsaka, Takeo .
ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (08) :1263-1269
[7]  
Babak AA, 1998, RUSS J ELECTROCHEM+, V34, P149
[8]  
Beaufils Y, 1998, ELEC SOC S, V97, P171
[9]   Electrochemical behavior of lead dioxide deposited on reticulated vitreous carbon (RVC) [J].
Czerwinski, A ;
Zelazowska, M .
JOURNAL OF POWER SOURCES, 1997, 64 (1-2) :29-34
[10]   Characterisation of a laboratory electrochemical ozonation system and its application in advanced oxidation processes [J].
Da Silva, LM ;
Franco, DV ;
Forti, JC ;
Jardim, WF ;
Boodts, JFC .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 2006, 36 (05) :523-530
1234