采用SEM、EDS对钛基亚氧化钛电极进行形貌和成分表征,用线性极化曲线法和循环伏安法测试电化学性能,通过降解模拟污水测试降解性能以及用荧光光谱法检测自由基.结果表明,钛基亚氧化钛电极上不能发生直接氧化反应,但是电极析氧电位可达2.18 V(vs.SCE),并且检测到生成大量·OH,是一种类似于Ti/SnO2的惰性电极,在NaCl和Na2SO4电解质溶液中电流效率分别达40.95%和22.52%,降解效果优于Ti/SnO2和Ti/RuIr电极.
参考文献
[1] | A.A. Gusev;E.G. Avvakumov;A.Zh. Medvedev.Ceramic Electrodes Based on Magneli Phases of Titanium Oxides[J].Science of sintering,20071(1):51-57. |
[2] | D. Regonini;A.C.E. Dent;C.R. Bowen;S.R. Pennock;J. Taylor.Impedance spectroscopy analysis of Ti_nO_(2n-1) Magneli phases[J].Materials Letters,201123/24(23/24):3590-3592. |
[3] | B. Babic;J.Gulicovski;Lj. Gajic-Krstajic;N. Elezovic;V.R. Radmilovic;N.V. Krstajic;Lj.M. Vracar.Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution[J].Journal of Power Sources,20091(1):99-106. |
[4] | F. C. Walsh;R. G. A. Wills.The continuing development of Magneli phase titanium sub-oxides and Ebonex electrodes[J].Electrochimica Acta,201022(22):6342-6351. |
[5] | Brian P. Chaplin.Critical review of electrochemical advanced oxidation processes for water treatment applications[J].Environmental Science: Processes & Impacts,20146(6):1182-1203. |
[6] | Dorin Bejan;John D. Malcolm;Lyndsay Morrison;Nigel J. Bunce.Mechanistic investigation of the conductive ceramic Ebonex as an anode material[J].Electrochimica Acta,200923(23):5548-5556. |
[7] | Dorin Bejan;Elena Guinea;Nigel J. Bunce.On the nature of the hydroxyl radicals produced at boron-doped diamond and Ebonex anodes[J].Electrochimica Acta,2012:275-281. |
[8] | 丁海洋;冯玉杰;吕江维;刘峻峰.钛基二氧化锡电极电解过程中羟基自由基检测及电催化机理[J].分析化学,2007(10):1395-1399. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%