Direct growth of ultra-long platinum nanolawns on a semiconductor photocatalyst

Yu Lin Shen, Shih Yun Chen, Jenn Ming Song, Tzu Kang Chin, Chu Hsuan Lin, In-Gann Chen

研究成果: Article

8 引文 (Scopus)

摘要

A template- and surfactant-free process, thermally assisted photoreduction, is developed to prepare vertically grown ultra-long Pt nanowires (NWs) (about 30-40 nm in diameter, 5-6 μm in length, and up to 80 NWs/100 μm 2 in the wire density) on TiO 2 coated substrates, including Si wafers and carbon fibers, with the assistance of the photocatalytic ability and semiconductor characteristics of TiO 2. A remarkable aspect ratio of up to 200 can be achieved. TEM analytical results suggest that the Pt NWs are single-crystalline with a preferred 〈111〉growth direction. The precursor adopted and the heat treatment conditions are crucial for the yield of NWs. The photoelectrons supplied by TiO 2 gives rise to the formation of nano-sized Pt nuclei from salt melt or solution. The subsequent growth of NWs is supported by the thermal electrons which also generated from TiO 2 during the post thermal treatment. The interactions between the ions and the electrons in the Pt/TiO 2 junction are discussed in this study.

原文English
文章編號380
頁(從 - 到)1-7
頁數7
期刊Nanoscale Research Letters
6
DOIs
出版狀態Published - 2011 十二月 1

指紋

Photocatalysts
Platinum
Nanowires
platinum
nanowires
Semiconductor materials
Heat treatment
Electrons
Photoelectrons
carbon fibers
Surface-Active Agents
photochemical reactions
Carbon fibers
aspect ratio
Aspect ratio
photoelectrons
Surface active agents
heat treatment
electrons
templates

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

引用此文

Shen, Yu Lin ; Chen, Shih Yun ; Song, Jenn Ming ; Chin, Tzu Kang ; Lin, Chu Hsuan ; Chen, In-Gann. / Direct growth of ultra-long platinum nanolawns on a semiconductor photocatalyst. 於: Nanoscale Research Letters. 2011 ; 卷 6. 頁 1-7.
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abstract = "A template- and surfactant-free process, thermally assisted photoreduction, is developed to prepare vertically grown ultra-long Pt nanowires (NWs) (about 30-40 nm in diameter, 5-6 μm in length, and up to 80 NWs/100 μm 2 in the wire density) on TiO 2 coated substrates, including Si wafers and carbon fibers, with the assistance of the photocatalytic ability and semiconductor characteristics of TiO 2. A remarkable aspect ratio of up to 200 can be achieved. TEM analytical results suggest that the Pt NWs are single-crystalline with a preferred 〈111〉growth direction. The precursor adopted and the heat treatment conditions are crucial for the yield of NWs. The photoelectrons supplied by TiO 2 gives rise to the formation of nano-sized Pt nuclei from salt melt or solution. The subsequent growth of NWs is supported by the thermal electrons which also generated from TiO 2 during the post thermal treatment. The interactions between the ions and the electrons in the Pt/TiO 2 junction are discussed in this study.",
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Direct growth of ultra-long platinum nanolawns on a semiconductor photocatalyst. / Shen, Yu Lin; Chen, Shih Yun; Song, Jenn Ming; Chin, Tzu Kang; Lin, Chu Hsuan; Chen, In-Gann.

於: Nanoscale Research Letters, 卷 6, 380, 01.12.2011, p. 1-7.

研究成果: Article

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AU - Shen, Yu Lin

AU - Chen, Shih Yun

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AU - Chin, Tzu Kang

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AU - Chen, In-Gann

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AB - A template- and surfactant-free process, thermally assisted photoreduction, is developed to prepare vertically grown ultra-long Pt nanowires (NWs) (about 30-40 nm in diameter, 5-6 μm in length, and up to 80 NWs/100 μm 2 in the wire density) on TiO 2 coated substrates, including Si wafers and carbon fibers, with the assistance of the photocatalytic ability and semiconductor characteristics of TiO 2. A remarkable aspect ratio of up to 200 can be achieved. TEM analytical results suggest that the Pt NWs are single-crystalline with a preferred 〈111〉growth direction. The precursor adopted and the heat treatment conditions are crucial for the yield of NWs. The photoelectrons supplied by TiO 2 gives rise to the formation of nano-sized Pt nuclei from salt melt or solution. The subsequent growth of NWs is supported by the thermal electrons which also generated from TiO 2 during the post thermal treatment. The interactions between the ions and the electrons in the Pt/TiO 2 junction are discussed in this study.

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