Fabrication and properties of flower-shaped Pt@TiO2 core-shell nanoparticles

Xiao Feng Wu; Yun Fa Chen; Jeong Mo Yoon; Yeon Tae Yu

doi:10.1016/j.matlet.2010.07.027

Fabrication and properties of flower-shaped Pt@TiO₂ core-shell nanoparticles

Xiao Feng Wu
, Yun Fa Chen
, Jeong Mo Yoon
, Yeon Tae Yu^*

^*Corresponding author for this work

Information Materials Engineering

CAS - Institute of Process Engineering
Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

47 Scopus citations

Abstract

Flower-shaped core-shell Pt@TiO₂ nanoparticles have been synthesized successfully by a simple hydrothermal route using TiF₄ as precursor. Morphology of the product was investigated by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction technique. It has been revealed that the TiO₂ shells of core-shell Pt@TiO₂ nanoparticles are constructed by multiple wedge-shaped petals of TiO₂ crystals with anatase-type crystalline phase. The SAED pattern of TiO₂ shells reflecting the formation of wedge-shaped TiO₂ petals is because of the preferential growth of (004) crystal planes surrounded by (101) facets of TiO₂ crystal planes. The high phototocatalytic performance of flower-shaped core-shell Pt@TiO₂ nanoparticles is also largely attributed to the high Schottky energical barrier within Pt-TiO₂ hetero-interface and the interaction between synchronously vibrated electrons within Pt and electrons in valence band of TiO₂ crystals.

Original language	English
Pages (from-to)	2208-2210
Number of pages	3
Journal	Materials Letters
Volume	64
Issue number	20
DOIs	https://doi.org/10.1016/j.matlet.2010.07.027
State	Published - 2010.10.31

Keywords

Core-shell particles
Crystal growth
Hetero-interface
Microstructure

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Mechanical
Physics & Astronomy

Access to Document

10.1016/j.matlet.2010.07.027

Cite this

@article{d4bef8548a43455da2f294f1118c860f,

title = "Fabrication and properties of flower-shaped Pt@TiO2 core-shell nanoparticles",

abstract = "Flower-shaped core-shell Pt@TiO2 nanoparticles have been synthesized successfully by a simple hydrothermal route using TiF4 as precursor. Morphology of the product was investigated by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction technique. It has been revealed that the TiO2 shells of core-shell Pt@TiO2 nanoparticles are constructed by multiple wedge-shaped petals of TiO2 crystals with anatase-type crystalline phase. The SAED pattern of TiO2 shells reflecting the formation of wedge-shaped TiO2 petals is because of the preferential growth of (004) crystal planes surrounded by (101) facets of TiO2 crystal planes. The high phototocatalytic performance of flower-shaped core-shell Pt@TiO2 nanoparticles is also largely attributed to the high Schottky energical barrier within Pt-TiO2 hetero-interface and the interaction between synchronously vibrated electrons within Pt and electrons in valence band of TiO2 crystals.",

keywords = "Core-shell particles, Crystal growth, Hetero-interface, Microstructure",

author = "Wu, \{Xiao Feng\} and Chen, \{Yun Fa\} and Yoon, \{Jeong Mo\} and Yu, \{Yeon Tae\}",

year = "2010",

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doi = "10.1016/j.matlet.2010.07.027",

language = "English",

volume = "64",

pages = "2208--2210",

journal = "Materials Letters",

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T1 - Fabrication and properties of flower-shaped Pt@TiO2 core-shell nanoparticles

AU - Wu, Xiao Feng

AU - Chen, Yun Fa

AU - Yoon, Jeong Mo

AU - Yu, Yeon Tae

PY - 2010/10/31

Y1 - 2010/10/31

N2 - Flower-shaped core-shell Pt@TiO2 nanoparticles have been synthesized successfully by a simple hydrothermal route using TiF4 as precursor. Morphology of the product was investigated by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction technique. It has been revealed that the TiO2 shells of core-shell Pt@TiO2 nanoparticles are constructed by multiple wedge-shaped petals of TiO2 crystals with anatase-type crystalline phase. The SAED pattern of TiO2 shells reflecting the formation of wedge-shaped TiO2 petals is because of the preferential growth of (004) crystal planes surrounded by (101) facets of TiO2 crystal planes. The high phototocatalytic performance of flower-shaped core-shell Pt@TiO2 nanoparticles is also largely attributed to the high Schottky energical barrier within Pt-TiO2 hetero-interface and the interaction between synchronously vibrated electrons within Pt and electrons in valence band of TiO2 crystals.

AB - Flower-shaped core-shell Pt@TiO2 nanoparticles have been synthesized successfully by a simple hydrothermal route using TiF4 as precursor. Morphology of the product was investigated by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction technique. It has been revealed that the TiO2 shells of core-shell Pt@TiO2 nanoparticles are constructed by multiple wedge-shaped petals of TiO2 crystals with anatase-type crystalline phase. The SAED pattern of TiO2 shells reflecting the formation of wedge-shaped TiO2 petals is because of the preferential growth of (004) crystal planes surrounded by (101) facets of TiO2 crystal planes. The high phototocatalytic performance of flower-shaped core-shell Pt@TiO2 nanoparticles is also largely attributed to the high Schottky energical barrier within Pt-TiO2 hetero-interface and the interaction between synchronously vibrated electrons within Pt and electrons in valence band of TiO2 crystals.

KW - Core-shell particles

KW - Crystal growth

KW - Hetero-interface

KW - Microstructure

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