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The promoted photoelectrocatalytic degradation of rhodamine B over TiO2 thin film under the half-wave pulsed direct current

Paper ID Volume ID Publish Year Pages File Format Full-Text
47111 46459 2011 6 PDF Available
Title
The promoted photoelectrocatalytic degradation of rhodamine B over TiO2 thin film under the half-wave pulsed direct current
Abstract

The photoelectrocatalytic (PEC) degradation of rhodamine B (RhB) over nanosized titanium dioxide (TiO2) coated working electrode was investigated under the half-wave pulsed direct current (DC). It was found that the PEC degradation of RhB was greatly enhanced under the half-wave pulsed DC mode, compared to under the constant DC mode widely used in the photoelectrochemical cells. It was mostly ascribed to it that the electrons could be more efficiently conducted into the outer circuit under the half-wave pulsed DC, leading to the improved generation of the holes at the surface of TiO2 working electrode and thereby promoting the PEC oxidation of RhB, relative to under the constant DC. We provide a simple and promising way to improve the photocatalytic oxidation of organic dyes over TiO2 thin film.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ A PEC technique driven under half-wave pulsed direct current is provided. ▶ The PEC efficiency under half-wave pulsed DC is improved than conventional DC. ▶ The electric induced electron transfer from RhB to TiO2 is suggested.

Keywords
Photoelectrocatalysis; Constant DC; Half-wave pulsed DC; TiO2 thin film
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The promoted photoelectrocatalytic degradation of rhodamine B over TiO2 thin film under the half-wave pulsed direct current
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 102, Issues 3–4, 22 February 2011, Pages 464–469
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us