Cobalt-Modified Porous Single-Crystalline LaTiO<sub>2</sub>N for Highly Efficient Water Oxidation under Visible Light
Fuxiang ZhangDepartment of Chemical System
Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanAkira YamakataGraduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku,
Nagoya 468-8511, JapanKazuhiko MaedaDepartment of Chemical System
Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanYosuke MoriyaDepartment of Chemical System
Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanTsuyoshi TakataDepartment of Chemical System
Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanJun KubotaDepartment of Chemical System
Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanKatsuya TeshimaDepartment of Environmental
Science and Technology, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanShuji OishiDepartment of Environmental
Science and Technology, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, JapanKazunari DomenDepartment of Chemical System
Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2012en
ABI
Аннотация
Highly efficient water oxidation utilizing visible photons of up to 600 nm is a crucial step in artificial photosynthesis. Here we present a highly active photocatalyst for visible-light-driven water oxidation, consisting of single-crystalline meso- and macroporous LaTiO(2)N (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 ± 2.6% at 440 nm, which substantially exceeds the values reported for previous particulate photocatalysts with a 600-nm absorption edge.
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