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Literature DB >> 22234656

Kinetics and mechanism of light-driven oxygen evolution at thin film α-Fe2O3 electrodes.

Charles Y Cummings¹, Frank Marken, Laurence M Peter, Asif A Tahir, K G Upul Wijayantha.

Abstract

Rate constants for recombination and hole transfer during oxygen evolution at illuminated α-Fe(2)O(3) electrodes were measured by intensity-modulated photocurrent spectroscopy and found to be remarkably low. Treatment of the electrode with a Co(II) solution suppressed surface recombination but did not catalyse hole transfer. Intermediates in the reaction were detected spectroscopically. This journal is © The Royal Society of Chemistry 2012

Entities: Chemical Gene

Year: 2012 PMID： 22234656 DOI： 10.1039/c2cc16382a

Source DB: PubMed Journal: Chem Commun (Camb) ISSN： 1359-7345 Impact factor: 6.222

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Kinetics and mechanism of light-driven oxygen evolution at thin film α-Fe2O3 electrodes.

1. Water splitting: An adaptive junction.

2. Time-resolved observations of water oxidation intermediates on a cobalt oxide nanoparticle catalyst.

3. Direct Z-scheme of n-type CuS/p-type ZnS@electrospun PVP nanofiber for the highly efficient catalytic reduction of 4-nitrophenol and mixed dyes.

4. Determination of photoelectrochemical water oxidation intermediates on haematite electrode surfaces using operando infrared spectroscopy.

5. Rate law analysis of water oxidation on a hematite surface.

6. Efficient suppression of back electron/hole recombination in cobalt phosphate surface-modified undoped bismuth vanadate photoanodes.

7. A Nanojunction Polymer Photoelectrode for Efficient Charge Transport and Separation.

8. Photocurrent of BiVO₄ is limited by surface recombination, not surface catalysis.

9. Empirical in operando analysis of the charge carrier dynamics in hematite photoanodes by PEIS, IMPS and IMVS.

10. Tin and Oxygen-Vacancy Co-doping into Hematite Photoanode for Improved Photoelectrochemical Performances.