Light-driven water oxidation for solar fuels.
Light-driven water oxidation for solar fuels.
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DOI：
10.1016/j.ccr.2012.03.031
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发表时间：
2012-11-01
影响因子：
20.6
通讯作者：
Brudvig GW
中科院分区：
文献类型：
--
作者：
Young KJ;Martini LA;Milot RL;Snoeberger RC III;Batista VS;Schmuttenmaer CA;Crabtree RH;Brudvig GW
光驱动的水氧化是将阳光转化为可储存化学燃料的重要步骤。 Fujishima 和 Honda 于 1972 年报道了第一个光电化学水氧化的例子。在他们的系统中，TiO2 受到紫外线照射，在阳极产生氧气，在铂阴极产生氢气。受该系统的启发，最近的工作集中在用分子吸附物功能化纳米多孔 TiO2 或其他半导体表面，包括吸收可见光并发电的发色团和催化剂（即染料敏化太阳能电池）或在低过电势下触发水氧化（即光催化电池）。根据四电子水氧化过程的需要，利用多个光化学事件进行多电子反应的物理学一直是许多实验和计算研究的主题。尽管在各个组件方面取得了重大进展，但开发用于太阳能水分解的高效光催化电池仍然是一个突出的挑战。本文回顾了该领域的最新进展，重点是受典型染料敏化太阳能电池功能化薄膜半导体设计启发的水氧化光阳极。
Light-driven water oxidation is an essential step for conversion of sunlight into storable chemical fuels. Fujishima and Honda reported the first example of photoelectrochemical water oxidation in 1972. In their system, TiO2 was irradiated with ultraviolet light, producing oxygen at the anode and hydrogen at a platinum cathode. Inspired by this system, more recent work has focused on functionalizing nanoporous TiO2 or other semiconductor surfaces with molecular adsorbates, including chromophores and catalysts that absorb visible light and generate electricity (i.e., dye-sensitized solar cells) or trigger water oxidation at low overpotentials (i.e., photocatalytic cells). The physics involved in harnessing multiple photochemical events for multielectron reactions, as required in the four-electron water oxidation process, has been the subject of much experimental and computational study. In spite of significant advances with regard to individual components, the development of highly efficient photocatalytic cells for solar water splitting remains an outstanding challenge. This article reviews recent progress in the field with emphasis on water-oxidation photoanodes inspired by the design of functionalized thin film semiconductors of typical dye-sensitized solar cells.
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