Synthesis and structural characterization of thermally stable Pt/SnO 2 nanocomposite particles

Shinobu Fujihara; Yuka Ogino; Hiroaki Imai; Sae Hoon Kim

doi:10.1088/0957-4484/16/8/070

Synthesis and structural characterization of thermally stable Pt/SnO ₂ nanocomposite particles

Shinobu Fujihara, Yuka Ogino, Hiroaki Imai, Sae Hoon Kim

Department of Applied Chemistry

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

5 Citations (Scopus)

Abstract

Thermally stable (not sinterable) Pt/SnO₂ (metal/semiconductor) nanocomposite particles were successfully prepared by chemical methods consisting of thermohydrolysis of SnCl₄, hydrothermal processes of resultant SnO₂ nanoparticles and subsequent photo-deposition of Pt using H₂PtCl₆. XRD, HRTEM, EDS and XPS examinations revealed that platinum nanodomains (about 2 nm in size) could be deposited on the surface of nanocrystalline SnO₂ particles (about 8 nm). After annealing the Pt/SnO₂ nanopowders at 500 °C, their specific surface area was found to be still higher than 100 m² g^-1, thereby indicating high thermal stability against particle growth and sintering. These results show an important aspect in loading nanomaterials in practical devices without losing the nanocrystalline nature.

Original language	English
Pages (from-to)	1396-1399
Number of pages	4
Journal	Nanotechnology
Volume	16
Issue number	8
DOIs	https://doi.org/10.1088/0957-4484/16/8/070
Publication status	Published - 2005 Aug 1

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0957-4484/16/8/070

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abstract = "Thermally stable (not sinterable) Pt/SnO2 (metal/semiconductor) nanocomposite particles were successfully prepared by chemical methods consisting of thermohydrolysis of SnCl4, hydrothermal processes of resultant SnO2 nanoparticles and subsequent photo-deposition of Pt using H2PtCl6. XRD, HRTEM, EDS and XPS examinations revealed that platinum nanodomains (about 2 nm in size) could be deposited on the surface of nanocrystalline SnO2 particles (about 8 nm). After annealing the Pt/SnO2 nanopowders at 500 °C, their specific surface area was found to be still higher than 100 m2 g-1, thereby indicating high thermal stability against particle growth and sintering. These results show an important aspect in loading nanomaterials in practical devices without losing the nanocrystalline nature.",

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T1 - Synthesis and structural characterization of thermally stable Pt/SnO 2 nanocomposite particles

AU - Fujihara, Shinobu

AU - Ogino, Yuka

AU - Imai, Hiroaki

AU - Kim, Sae Hoon

PY - 2005/8/1

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AB - Thermally stable (not sinterable) Pt/SnO2 (metal/semiconductor) nanocomposite particles were successfully prepared by chemical methods consisting of thermohydrolysis of SnCl4, hydrothermal processes of resultant SnO2 nanoparticles and subsequent photo-deposition of Pt using H2PtCl6. XRD, HRTEM, EDS and XPS examinations revealed that platinum nanodomains (about 2 nm in size) could be deposited on the surface of nanocrystalline SnO2 particles (about 8 nm). After annealing the Pt/SnO2 nanopowders at 500 °C, their specific surface area was found to be still higher than 100 m2 g-1, thereby indicating high thermal stability against particle growth and sintering. These results show an important aspect in loading nanomaterials in practical devices without losing the nanocrystalline nature.

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Synthesis and structural characterization of thermally stable Pt/SnO ₂ nanocomposite particles

Abstract

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