Morphological control of carbon carrier in Pt-carbon nanocomposites derived from photocatalytic reactions on titanium(IV) oxide powders

Yun Hau Ng; Shigeru Ikeda; Sang-In Park; Yoshihiro Morita; Takashi Harada; Michio Matsumura

doi:10.1007/s11244-009-9197-1

Morphological control of carbon carrier in Pt-carbon nanocomposites derived from photocatalytic reactions on titanium(IV) oxide powders

Yun Hau Ng, Shigeru Ikeda^*, Sang-In Park, Yoshihiro Morita, Takashi Harada, Michio Matsumura

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

Photodeposition of Pt nanoparticle and phenolic polymer on TiO₂ in a deaerated aqueous system containing hexachloroplatinic acid and phenol were investigated. We observed that reductive deposition of Pt nanoparticles with electrons proceeded rapidly, while the oxidative deposition of a phenolic polymer with positive holes was relatively slow. The difference ensured the encapsulation of Pt nanoparticles between the polymer layer and TiO₂. Carbonization of the polymer components followed by removing TiO₂ resulted in the formation of two types of Pt-carbon nanocomposites with different morphologies of carbons, depending on photoirradiation duration. These composites exhibited high levels of catalytic activity and reusability for aqueous oxidation of 1-phenylethanol with molecular oxygen.

Original language	English
Pages (from-to)	627-633
Journal	Topics in Catalysis
Volume	52
Issue number	6-7
Online published	9 Apr 2009
DOIs	https://doi.org/10.1007/s11244-009-9197-1
Publication status	Published - Jun 2009
Externally published	Yes

Research Keywords

Aqueous oxidation
Heterogeneous catalysis
Molecular oxygen
Nanocomposite
Photocatalysis
Photodeposition
Porous carbon
Pt nanoparticle

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title = "Morphological control of carbon carrier in Pt-carbon nanocomposites derived from photocatalytic reactions on titanium(IV) oxide powders",

abstract = "Photodeposition of Pt nanoparticle and phenolic polymer on TiO2 in a deaerated aqueous system containing hexachloroplatinic acid and phenol were investigated. We observed that reductive deposition of Pt nanoparticles with electrons proceeded rapidly, while the oxidative deposition of a phenolic polymer with positive holes was relatively slow. The difference ensured the encapsulation of Pt nanoparticles between the polymer layer and TiO2. Carbonization of the polymer components followed by removing TiO2 resulted in the formation of two types of Pt-carbon nanocomposites with different morphologies of carbons, depending on photoirradiation duration. These composites exhibited high levels of catalytic activity and reusability for aqueous oxidation of 1-phenylethanol with molecular oxygen. ",

keywords = "Aqueous oxidation, Heterogeneous catalysis, Molecular oxygen, Nanocomposite, Photocatalysis, Photodeposition, Porous carbon, Pt nanoparticle",

author = "Ng, {Yun Hau} and Shigeru Ikeda and Sang-In Park and Yoshihiro Morita and Takashi Harada and Michio Matsumura",

year = "2009",

month = jun,

doi = "10.1007/s11244-009-9197-1",

language = "English",

volume = "52",

pages = "627--633",

journal = "Topics in Catalysis",

issn = "1022-5528",

publisher = "Springer",

number = "6-7",

}

TY - JOUR

T1 - Morphological control of carbon carrier in Pt-carbon nanocomposites derived from photocatalytic reactions on titanium(IV) oxide powders

AU - Ng, Yun Hau

AU - Ikeda, Shigeru

AU - Park, Sang-In

AU - Morita, Yoshihiro

AU - Harada, Takashi

AU - Matsumura, Michio

PY - 2009/6

Y1 - 2009/6

N2 - Photodeposition of Pt nanoparticle and phenolic polymer on TiO2 in a deaerated aqueous system containing hexachloroplatinic acid and phenol were investigated. We observed that reductive deposition of Pt nanoparticles with electrons proceeded rapidly, while the oxidative deposition of a phenolic polymer with positive holes was relatively slow. The difference ensured the encapsulation of Pt nanoparticles between the polymer layer and TiO2. Carbonization of the polymer components followed by removing TiO2 resulted in the formation of two types of Pt-carbon nanocomposites with different morphologies of carbons, depending on photoirradiation duration. These composites exhibited high levels of catalytic activity and reusability for aqueous oxidation of 1-phenylethanol with molecular oxygen.

AB - Photodeposition of Pt nanoparticle and phenolic polymer on TiO2 in a deaerated aqueous system containing hexachloroplatinic acid and phenol were investigated. We observed that reductive deposition of Pt nanoparticles with electrons proceeded rapidly, while the oxidative deposition of a phenolic polymer with positive holes was relatively slow. The difference ensured the encapsulation of Pt nanoparticles between the polymer layer and TiO2. Carbonization of the polymer components followed by removing TiO2 resulted in the formation of two types of Pt-carbon nanocomposites with different morphologies of carbons, depending on photoirradiation duration. These composites exhibited high levels of catalytic activity and reusability for aqueous oxidation of 1-phenylethanol with molecular oxygen.

KW - Aqueous oxidation

KW - Heterogeneous catalysis

KW - Molecular oxygen

KW - Nanocomposite

KW - Photocatalysis

KW - Photodeposition

KW - Porous carbon

KW - Pt nanoparticle

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-78149285764&origin=recordpage

U2 - 10.1007/s11244-009-9197-1

DO - 10.1007/s11244-009-9197-1

M3 - RGC 21 - Publication in refereed journal

SN - 1022-5528

VL - 52

SP - 627

EP - 633

JO - Topics in Catalysis

JF - Topics in Catalysis

IS - 6-7

ER -

Morphological control of carbon carrier in Pt-carbon nanocomposites derived from photocatalytic reactions on titanium(IV) oxide powders

Abstract

Research Keywords

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