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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received January 9, 2016
Accepted July 5, 2016

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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

Younghun Sung^{1 2} Jaehoon Lim³ Jai Hyun Koh⁴ Byoung Koun Min⁴ Jeffrey Pyun^{2 5†} Kookheon Char^{1 2†}

¹The National Creative Research Initiative (CRI) Center for Intelligent Hybrids, Seoul National University, Seoul 08826, Korea ²The WCU Program of Chemical Convergence for Energy & Environment, School of Chemical & Biological Engineering, Seoul National University, Seoul 08826, Korea ³Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A., USA ⁴Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea ⁵Department of Chemistry & Biochemistry, University of Arizona, Tucson, AZ 85721, U.S.A., Korea

Korean Journal of Chemical Engineering, August 2016, 33(8), 2287-2290(4), 10.1007/s11814-016-0200-9

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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.

Keywords

Colloidal Heterostructured Nanocrystal CdSe Tetrapod Photocatalytic Hydrogen Generation