Modification of the diamond film electrode with photochemistry for phenol degradation

Abstract

The degradation of phenols has become urgent issues. In this paper, the diamond film electrode modified by photochemistry is chosen as the research object for phenol degradation. The boron-doped diamond films, which are modified and unmodified, are characterized by the X-ray photoelectron spectroscopy (XPS). Cyclic voltammograms are used to test the electrochemical window. It is found that the current value of tantalum/boron-doped diamond (Ta/BDD) electrode with amino modification increases two orders of magnitude in degrading the nitro-phenol, when the amino-modified rate is only 1.9%. The current value is enhanced from −4.0 × 10⁻⁴A-4.0 × 10⁻⁴ A to −4.0 × 10⁻²A-4.0 × 10⁻²A. In addition, in order to understand the excellent characteristics of Ta/BDD electrode modified by photochemistry for phenol degradation, the efficiency of degradation is also discussed.

Keywords

Cyclic Voltammograms / Diamond Film / Phenol Degradation / Electrochemical Window / Wide Electrochemical Window

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