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Facile Synthesis of Porous Zn2Ti3O8 Nanorods for Photocatalytic Overall Water Splitting

Authors

  • Dr. Yang Qu,

    1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P.R. China)
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  • Wei Zhou,

    1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P.R. China)
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  • Zhiyu Ren,

    1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P.R. China)
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  • Guofeng Wang,

    1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P.R. China)
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  • Baojiang Jiang,

    1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P.R. China)
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  • Prof. Honggang Fu

    Corresponding author
    1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P.R. China)
    • Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (P.R. China)

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Abstract

Metastable-phase porous Zn2Ti3O8 nanorods as photocatalysts for overall water splitting, coupled with RuO2 as co-catalysts, were synthesized by using ethylene glycol as a phase-stabilizing and 1 D structure-directing agent. The typical electronic energy band gap of Zn2Ti3O8 was confirmed to be excellent for overall water splitting photocatalysts by theoretical calculations and experimental results. Steady and stoichiometric H2 and O2 evolutions were observed, which increased with time. The yields of H2 and O2 were near to 4 and 2 μmol h−1 (0.1 g), respectively. The excellent overall water-splitting activities could be attributed to the pure metastable phase of Zn2Ti3O8 possessing a suitable band gap and the porous 1 D structure favoring acceleration of the photogenerated charge transportation and separation.

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