Institute of Inorganic Chemistry II, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstr. 1, 91058, Erlangen, Germany.
Dalton Trans. 2012 Feb 14;41(6):1651-9. doi: 10.1039/c1dt11220a. Epub 2011 Dec 20.
Molecular metal oxide clusters, so-called polyoxometalates (POM) have been extensively used as homogeneous photocatalysts in various photoredox reactions such as the oxidation of alkanes, alkenes and alcohols as well as the light-induced mineralisation of various organic and inorganic pollutants. The more general application of POMs as photoactive compounds, in particular in solar energy harnessing, has been hampered as the clusters typically absorb light in the UV-region only. Over the past decade, concepts have been put forward on how the reactivity of this class of compounds can be optimised to improve their overall photoactivity, and a particular focus has been on the design of photocatalytic processes which allow the conversion of solar light into useful chemical reactivity. This perspective gives a brief overview of general aspects of POM photochemistry and critically discusses the advantages and challenges of a range of POM-based systems for photooxidations and photoreductions with a focus on the development of sustainable solar light conversion systems.
分子金属氧化物簇，即多金属氧酸盐（POM），已被广泛用作各种光氧化还原反应中的均相光催化剂，如烷烃、烯烃和醇的氧化以及各种有机和无机污染物的光诱导矿化。多金属氧酸盐作为光活性化合物的更广泛应用受到阻碍，因为这些簇通常仅在 UV 区域吸收光。在过去的十年中，人们提出了如何优化这类化合物的反应性以提高其整体光活性的概念，并且特别关注设计允许将太阳能转化为有用化学反应性的光催化过程。本文简要概述了 POM 光化学的一般方面，并批判性地讨论了一系列基于 POM 的系统在光氧化和光还原方面的优缺点，重点是开发可持续的太阳能转换系统。
