Investigation on microelectrodes III. The study of the electrodeposition processes of Hg^2^+ on carbon fiber microelectrode

Abstract

The morphol. structure of electrodeposited Hg on the surface of carbon fiber microelectrode in different Hg2+ concns., the mechanism of electrodeposition and the influence of experimental parameters on the features of mercury film are studied. The processes of nucleation and growth, as well as the d. of nuclei are discussed. By means of scanning electron microscope, mercury crystal pattern is observed In the concentration of 6 ?10-5 mol.L-1 Hg2+, the quasi-Hg-film composed of microdroplets in the type of d. distribution with the radius of about 0.03-0.2 mm can be formed. The d. of microdroplet is about 5.7 ?106 particles/cm2. The other experimental conditions are recommended.

Key words: MERCURY, MERCURY FILM ELECTRODES, ELECTRO-DEPOSITION, CARBON FIBERS, MICROELECTRODE, ION CONCENTRATION, ELECTROCHEMICAL METHOD

CLC Number:

O646

Cite this article

JU;CHEN HONGYUAN. Investigation on microelectrodes III. The study of the electrodeposition processes of Hg^2^+ on carbon fiber microelectrode[J]. Acta Chimica Sinica, 1991, 49(7): 694-699.

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微电极研究 III: Hg^2^+的电沉积过程的研究