Abstract
Ce-doped titania nanoparticles, which prepared at low temperature, were deposited onto a boron-doped diamond (BDD) film via a dip-coating method. The sample was characterized by X-ray diffraction analysis, scanning electron microscopy and UV–vis diffusion reflection spectrum. The photoelectrochemical measurement of the as-prepared composite electrode showed a clear improvement in the photocurrent under visible light irradiation. Furthermore, the composite electrode was applied in the degradation of a typical azo dye X-3B via photocatalysis, electro-oxidation and photoelectrocatalysis processes. Results showed that the degradation rate in the photoelectrocatalysis process was larger than the sum of photocatalysis and electro-oxidation processes, and the synergetic factor reached 1.5.
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