Uniform decoration of Pt nanoparticles on well-defined CdSe tetrapods and the effect of their Pt cluster size on photocatalytic H2 generation

Younghun Sung, Jaehoon Lim, Jai Hyun Koh, Lawrence J. Hill, Byoung Koun Min, Dong-Chul Pyun, Kookheon Char

Research output: Contribution to journalArticle

11 Scopus citations


Colloidal metal-semiconductor hybrid nanocrystals are of great interest due to their synergistic effect originating from multifunctionalities within a single nanocrystal for various applications. Among them, platinum-incorporated cadmium chalcogenide hybrid nanocrystals have been studied in the field of photocatalytic water splitting. Here, we present the direct decoration of Pt nanoparticles on CdSe tetrapod sidewalls synthesized by the continuous precursor injection (CPI) method. Pt-decorated CdSe tetrapods with different Pt nanoparticle sizes were synthesized and characterized by TEM, HR-TEM, XRD and HAADF-STEM. These tetrapods were employed as photocatalysts for the photocatalytic hydrogen generation reaction. The Pt-decorated CdSe tetrapods prepared with an extremely low amount of the Pt precursor showed the highest photocatalytic H2 generation efficiency, which is believed to be attributed to the size effect of the Pt nanoparticles decorated on the CdSe tetrapod sidewalls.

Original languageEnglish (US)
Pages (from-to)8423-8427
Number of pages5
Issue number44
StatePublished - 2015


ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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