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; Jeffrey Pyun; Kookheon Char

doi:10.1039/c5ce01502b

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, Jeffrey Pyun, Kookheon Char

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	8423-8427
Number of pages	5
Journal	CrystEngComm
Volume	17
Issue number	44
DOIs	https://doi.org/10.1039/c5ce01502b
State	Published - 2015

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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

abstract = "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.",

author = "Younghun Sung and Jaehoon Lim and Koh, {Jai Hyun} and Hill, {Lawrence J.} and Min, {Byoung Koun} and Jeffrey Pyun and Kookheon Char",

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T1 - Uniform decoration of Pt nanoparticles on well-defined CdSe tetrapods and the effect of their Pt cluster size on photocatalytic H2 generation

AU - Sung, Younghun

AU - Lim, Jaehoon

AU - Koh, Jai Hyun

AU - Hill, Lawrence J.

AU - Min, Byoung Koun

AU - Pyun, Jeffrey

AU - Char, Kookheon

N1 - Publisher Copyright: © The Royal Society of Chemistry.

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

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

Abstract

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