Effects of sonication on electrode surfaces and metal particles

被引:28
作者
Madigan, NA [1 ]
Hagan, CRS [1 ]
Zhang, HH [1 ]
Coury, LA [1 ]
机构
[1] DUKE UNIV, DEPT CHEM, DURHAM, NC 27708 USA
关键词
ultrasound; electrode surfaces; metal particles;
D O I
10.1016/S1350-4177(96)00032-6
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Ultrasonic irradiation at a frequency of 20 kHz has varying effects on electrode surfaces. Non-metals such as glassy carbon and Ebonex(TM) are severely pitted after only a few minutes of sonication in aqueous media. By contrast, metals such as Pt, Au, W and Pd remain largely undamaged after 120 s, as observed by scanning electron microscopy. The extent of damage does not appear to be related to the melting point of the material. By contrast, when electrodes are sonicated in suspensions of metal powders, particles are deposited onto electrode surfaces. The deposits were subsequently observed by scanning electron microscopy and by voltammetry. It is concluded that the ability to deposit particles on an electrode depends on both the melting point of the particles and the electrode, whereas surface damage is more closely related to the hardness of the material.
引用
收藏
页码:S239 / S247
页数:9
相关论文
共 38 条
  • [1] Bard A.J, 1980, Electrochemical methods: Fundamentals and applications
  • [2] HIGH SPEED CONTROLLED POTENTIAL COULOMETRY
    BARD, AJ
    [J]. ANALYTICAL CHEMISTRY, 1963, 35 (09) : 1125 - &
  • [3] EFFECTS OF ULTRASOUND ON THE YIELD OF HYDROGEN AND CHLORINE DURING ELECTROLYSIS OF AQUEOUS-SOLUTIONS OF NACL OR HCL
    CATALDO, F
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1992, 332 (1-2): : 325 - 331
  • [4] MODIFYING EFFECT OF ULTRASOUND UPON THE ELECTROCHEMICAL OXIDATION OF CYCLOHEXANECARBOXYLATE
    CHYLA, A
    LORIMER, JP
    MASON, TJ
    SMITH, G
    WALTON, DJ
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1989, (09) : 603 - 604
  • [5] CLARKE RL, 1993, TECH B
  • [6] VOLTAMMETRY IN THE PRESENCE OF ULTRASOUND - SONOVOLTAMMETRY AND SURFACE EFFECTS
    COMPTON, RG
    EKLUND, JC
    PAGE, SD
    SANDERS, GHW
    BOOTH, J
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (47) : 12410 - 12414
  • [7] ULTRASONICALLY-ASSISTED ELECTROCATALYTIC DECHLORINATION OF POLYCHLORINATED-BIPHENYLS
    CONNORS, TF
    RUSLING, JF
    [J]. CHEMOSPHERE, 1984, 13 (03) : 415 - 420
  • [8] ELECTROCHEMICAL EXAMINATION OF UNUSUAL PROPERTIES OF SPECTROSCOPIC GRAPHITE-ELECTRODES
    COURY, LA
    HEINEMAN, WR
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1988, 256 (02): : 327 - 341
  • [9] ULTRASONIC HYDRODYNAMIC MODULATION VOLTAMMETRY
    DEWALD, HD
    PETERSON, BA
    [J]. ANALYTICAL CHEMISTRY, 1990, 62 (07) : 779 - 782
  • [10] INTERPARTICLE COLLISIONS DRIVEN BY ULTRASOUND
    DOKTYCZ, SJ
    SUSLICK, KS
    [J]. SCIENCE, 1990, 247 (4946) : 1067 - 1069