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Arm length dependency of Pt-decorated CdSe tetrapods on the performance of photocatalytic hydrogen generation

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Abstract

Pt-decorated CdSe tetrapods with different arm lengths were tested for the photocatalytic hydrogen generation reaction. Well-defined CdSe tetrapods with controlled wurtzite arm lengths were synthesized by the continuous precursor injection (CPI) approach. Pt nanocrystals with an extremely small size of ∼1 nm were directly decorated on the overall surfaces of CdSe tetrapods. Ligand-exchanged Pt-decorated CdSe tetrapods with different arm lengths were employed as photocatalysts for photocatalytic hydrogen generation reaction in the presence of hole scavengers. Pt-decorated CdSe tetrapods with shorter arm length showed the highest photocatalytic efficiency, which is due to higher probability of charge separation.

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Authors and Affiliations

  1. The National Creative Research Initiative (CRI) Center for Intelligent Hybrids, Seoul National University, Seoul, 08826, Korea

    Younghun Sung & Kookheon Char

  2. The WCU Program of Chemical Convergence for Energy & Environment, School of Chemical & Biological Engineering, Seoul National University, Seoul, 08826, Korea

    Younghun Sung, Jeffrey Pyun & Kookheon Char

  3. Department of Chemistry & Biochemistry, University of Arizona, Tucson, AZ, 85721, USA

    Jeffrey Pyun

  4. Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea

    Jai Hyun Koh & Byoung Koun Min

  5. Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA

    Jaehoon Lim

Authors
  1. Younghun Sung
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  2. Jaehoon Lim
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  3. Jai Hyun Koh
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  4. Byoung Koun Min
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  5. Jeffrey Pyun
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  6. Kookheon Char
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Correspondence to Jeffrey Pyun or Kookheon Char.

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Sung, Y., Lim, J., Koh, J.H. et al. Arm length dependency of Pt-decorated CdSe tetrapods on the performance of photocatalytic hydrogen generation. Korean J. Chem. Eng. 33, 2287–2290 (2016). https://doi.org/10.1007/s11814-016-0200-9

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  • DOI: https://doi.org/10.1007/s11814-016-0200-9

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