Photocatalytic route for synthesis of hollow porous carbon/Pt nanocomposites with controllable density and porosity

Yun Hau Ng; Shigeru Ikeda; Takashi Harada; Sangin Park; Takao Sakata; Hirotaro Mori; Michio Matsumura

doi:10.1021/cm702034w

Photocatalytic route for synthesis of hollow porous carbon/Pt nanocomposites with controllable density and porosity

Yun Hau Ng, Shigeru Ikeda^*, Takashi Harada, Sangin Park, Takao Sakata, Hirotaro Mori, Michio Matsumura

^*Corresponding author for this work

Chemical Engineering

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

32 Scopus citations

Abstract

Simultaneous photoreduction of Pt(IV) ions and photooxidative polymerization of phenol on the surface of titanium(IV) oxide (TiO₂) under ultraviolet light irradiation induced the formation of a composite, Pt-loaded TiO₂ covered with a layer of phenolic polymer. Subsequent carbonization of the polymer layer and removal of TiO₂ core particles yielded hollow carbon incorporated with platinum nanoparticles (nPt@hC). By varying the photoirradiation time, appreciable changes in density and porosity of the polymer layer and the carbon shell in nPt@hC were observed: prolonged irradiation induced a densification of the carbon matrix, resulting in a decrease in pore volume. Mainly due to the modulation of active surface of Pt nanoparticles, the densification of carbon was found to influence catalytic activity for hydrogenation of normal olefins.

Original language	English (US)
Pages (from-to)	1154-1160
Number of pages	7
Journal	Chemistry of Materials
Volume	20
Issue number	3
DOIs	https://doi.org/10.1021/cm702034w
State	Published - Feb 12 2008

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm702034w

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title = "Photocatalytic route for synthesis of hollow porous carbon/Pt nanocomposites with controllable density and porosity",

abstract = "Simultaneous photoreduction of Pt(IV) ions and photooxidative polymerization of phenol on the surface of titanium(IV) oxide (TiO2) under ultraviolet light irradiation induced the formation of a composite, Pt-loaded TiO2 covered with a layer of phenolic polymer. Subsequent carbonization of the polymer layer and removal of TiO2 core particles yielded hollow carbon incorporated with platinum nanoparticles (nPt@hC). By varying the photoirradiation time, appreciable changes in density and porosity of the polymer layer and the carbon shell in nPt@hC were observed: prolonged irradiation induced a densification of the carbon matrix, resulting in a decrease in pore volume. Mainly due to the modulation of active surface of Pt nanoparticles, the densification of carbon was found to influence catalytic activity for hydrogenation of normal olefins.",

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T1 - Photocatalytic route for synthesis of hollow porous carbon/Pt nanocomposites with controllable density and porosity

AU - Ng, Yun Hau

AU - Ikeda, Shigeru

AU - Harada, Takashi

AU - Park, Sangin

AU - Sakata, Takao

AU - Mori, Hirotaro

AU - Matsumura, Michio

PY - 2008/2/12

Y1 - 2008/2/12

N2 - Simultaneous photoreduction of Pt(IV) ions and photooxidative polymerization of phenol on the surface of titanium(IV) oxide (TiO2) under ultraviolet light irradiation induced the formation of a composite, Pt-loaded TiO2 covered with a layer of phenolic polymer. Subsequent carbonization of the polymer layer and removal of TiO2 core particles yielded hollow carbon incorporated with platinum nanoparticles (nPt@hC). By varying the photoirradiation time, appreciable changes in density and porosity of the polymer layer and the carbon shell in nPt@hC were observed: prolonged irradiation induced a densification of the carbon matrix, resulting in a decrease in pore volume. Mainly due to the modulation of active surface of Pt nanoparticles, the densification of carbon was found to influence catalytic activity for hydrogenation of normal olefins.

AB - Simultaneous photoreduction of Pt(IV) ions and photooxidative polymerization of phenol on the surface of titanium(IV) oxide (TiO2) under ultraviolet light irradiation induced the formation of a composite, Pt-loaded TiO2 covered with a layer of phenolic polymer. Subsequent carbonization of the polymer layer and removal of TiO2 core particles yielded hollow carbon incorporated with platinum nanoparticles (nPt@hC). By varying the photoirradiation time, appreciable changes in density and porosity of the polymer layer and the carbon shell in nPt@hC were observed: prolonged irradiation induced a densification of the carbon matrix, resulting in a decrease in pore volume. Mainly due to the modulation of active surface of Pt nanoparticles, the densification of carbon was found to influence catalytic activity for hydrogenation of normal olefins.

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JO - Chemistry of Materials

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Photocatalytic route for synthesis of hollow porous carbon/Pt nanocomposites with controllable density and porosity

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