Cobalt-Modified Porous Single-Crystalline LaTiO2N for Highly Efficient Water Oxidation under Visible Light

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• 作者：Fuxiang Zhang ; Akira Yamakata ; Kazuhiko Maeda ; Yosuke Moriya ; Tsuyoshi Takata ; Jun Kubota ; Katsuya Teshima ; Shuji Oishi ; Kazunari Domen
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：May 23, 2012
• 年：2012
• 卷：134
• 期：20
• 页码：8348-8351
• 全文大小：222K
• 年卷期：v.134,no.20(May 23, 2012)
• ISSN：1520-5126

文摘

Highly efficient water oxidation utilizing visible photons of up to 600 nm is a crucial step in artifical photosynthesis. Here we present a highly active photocatalyst for visible-light-driven water oxidation, consisting of single-crystalline meso- and macroporous LaTiO₂N (LTON) with a band gap of 2.1 eV, and earth-abundasnt cobalt oxide (CoO_x) as a cocatalyst. The optimized CoO_x/LTON had a high quantum efficiency of 27.1 卤 2.6% at 440 nm, which substantially exceeds the values reported for previous particulate photocatalysts with a 600-nm absorption edge.