薄膜 α-Fe2O3 电极光驱动氧气析出的动力学和机理。
Kinetics and mechanism of light-driven oxygen evolution at thin film α-Fe2O3 electrodes.
机构信息
Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
出版信息
Chem Commun (Camb). 2012 Feb 14;48(14):2027-9. doi: 10.1039/c2cc16382a. Epub 2012 Jan 11.
PMID:22234656
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.
摘要
通过强度调制光电流谱法测量了受光照射的α-Fe(2)O(3)电极上氧析出反应中的复合和空穴转移的速率常数，发现其值显著较低。用 Co(II)溶液处理电极可以抑制表面复合，但不能催化空穴转移。反应中的中间体可以通过光谱法检测到。
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