A Simple Approach to the Visible-Light Photoactivation of Molecular Metal Oxides
A Simple Approach to the Visible-Light Photoactivation of Molecular Metal Oxides
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DOI：
10.1021/acs.inorgchem.7b01499
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发表时间：
2017-10-16
影响因子：
4.6
通讯作者：
Oshio, Hiroki
中科院分区：
文献类型：
--
作者：
Fujimoto, Satomi;Cameron, Jamie M.;Oshio, Hiroki
本研究探索了一种新的方法，以最大限度地提高可见光驱动的光催化性能的有机-无机杂化聚氧乙烯酸盐（POM）。一个家庭的膦酸酯取代的POM的实验和理论研究表明，接枝的有机部分的改性可用于调整金属氧化物组分的电子结构和光活性。与完全无机的多钨酸盐不同，这些有机-无机杂化物种对可见光有响应，并在模型环境污染物的分解中起到光催化剂（λ> 420 nm）的作用。光活化的程度被证明是依赖于由共价接枝的取代基所施加的诱导效应的性质。这项研究强调了混合POM设计的轨道工程方法中尚未开发的潜力，并有助于支持下一代定制，坚固和具有成本效益的分子金属氧化物光活性材料和催化剂。
This study explores a new method to maximize the visible-light-driven photocatalytic performance of organic-inorganic hybrid polyoxometalates (POMs). Experimental and theoretical investigations of a family of phosphonate-substituted POMs show that modification of grafted organic moieties can be used to tune the electronic structure and photoactivity of the metal oxide component. Unlike fully inorganic polyoxotungstates, these organic-inorganic hybrid species are responsive to visible light and function as photocatalysts (lambda > 420 nm) in the decomposition of a model environmental pollutant. The degree of photoactivation is shown to be dependent on the nature of the inductive effect exerted by the covalently grafted substituent groups. This study emphasizes the untapped potential that lie's in an orbital engineering approach to hybrid-POM design and helps to underpin the next generation of bespoke, robust, and cost-effective molecular metal oxide photoactive materials and catalysts.