Plasma-induced synthesis of Pt nanoparticles supported on TiO                         2                          nanotubes for enhanced methanol electro-oxidation

Nan Su; Xiulan Hu; Jianbo Zhang; Huihong Huang; Jiexu Cheng; Jinchen Yu; Chao Ge

doi:10.1016/j.apsusc.2016.12.095

Plasma-induced synthesis of Pt nanoparticles supported on TiO ₂ nanotubes for enhanced methanol electro-oxidation

Nan Su, Xiulan Hu, Jianbo Zhang, Huihong Huang, Jiexu Cheng, Jinchen Yu, Chao Ge

College of Materials Science and Engineering

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

54 Scopus citations

Abstract

A Pt/C/TiO ₂ nanotube composite catalyst was successfully prepared for enhanced methanol electro-oxidation. Pt nanoparticles with a particle size of 2 nm were synthesized by plasma sputtering in water, and anatase TiO ₂ nanotubes with an inner diameter of approximately 100 nm were prepared by a simple two-step anodization method and annealing process. Field-emission scanning electron microscopy images indicated that the different morphologies of TiO ₂ synthesized on the surface of Ti foils were dependent on the different anodization parameters. The electrochemical performance of Pt/C/TiO ₂ catalysts for methanol oxidation showed that TiO ₂ nanotubes were more suitable for use as Pt nanoparticle support materials than irregular TiO ₂ short nanorods due to their tubular morphology and better electronic conductivity. X-ray photoelectron spectroscopy characterization showed that the binding energies of the Pt 4f of the Pt/C/TiO ₂ nanotubes exhibited a slightly positive shift caused by the relatively strong interaction between Pt and the TiO ₂ nanotubes, which could mitigate the poisoning of the Pt catalyst by CO _ads , and further enhance the electrocatalytic performance. Thus, the as-obtained Pt/C/TiO ₂ nanotubes composites may become a promising catalyst for methanol electro-oxidation.

Original language	English
Pages (from-to)	403-410
Number of pages	8
Journal	Applied Surface Science
Volume	399
DOIs	https://doi.org/10.1016/j.apsusc.2016.12.095
State	Published - 31 Mar 2017

Keywords

Direct methanol fuel cells
Methanol electro-oxidation
Nanocomposites
Solution plasma
TiO nanotubes

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10.1016/j.apsusc.2016.12.095

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title = " Plasma-induced synthesis of Pt nanoparticles supported on TiO 2 nanotubes for enhanced methanol electro-oxidation ",

abstract = " A Pt/C/TiO 2 nanotube composite catalyst was successfully prepared for enhanced methanol electro-oxidation. Pt nanoparticles with a particle size of 2 nm were synthesized by plasma sputtering in water, and anatase TiO 2 nanotubes with an inner diameter of approximately 100 nm were prepared by a simple two-step anodization method and annealing process. Field-emission scanning electron microscopy images indicated that the different morphologies of TiO 2 synthesized on the surface of Ti foils were dependent on the different anodization parameters. The electrochemical performance of Pt/C/TiO 2 catalysts for methanol oxidation showed that TiO 2 nanotubes were more suitable for use as Pt nanoparticle support materials than irregular TiO 2 short nanorods due to their tubular morphology and better electronic conductivity. X-ray photoelectron spectroscopy characterization showed that the binding energies of the Pt 4f of the Pt/C/TiO 2 nanotubes exhibited a slightly positive shift caused by the relatively strong interaction between Pt and the TiO 2 nanotubes, which could mitigate the poisoning of the Pt catalyst by CO ads , and further enhance the electrocatalytic performance. Thus, the as-obtained Pt/C/TiO 2 nanotubes composites may become a promising catalyst for methanol electro-oxidation.",

keywords = "Direct methanol fuel cells, Methanol electro-oxidation, Nanocomposites, Solution plasma, TiO nanotubes",

author = "Nan Su and Xiulan Hu and Jianbo Zhang and Huihong Huang and Jiexu Cheng and Jinchen Yu and Chao Ge",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

month = mar,

day = "31",

doi = "10.1016/j.apsusc.2016.12.095",

language = "英语",

volume = "399",

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journal = "Applied Surface Science",

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Plasma-induced synthesis of Pt nanoparticles supported on TiO ₂ nanotubes for enhanced methanol electro-oxidation . / Su, Nan; Hu, Xiulan; Zhang, Jianbo et al.
In: Applied Surface Science, Vol. 399, 31.03.2017, p. 403-410.

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

TY - JOUR

T1 - Plasma-induced synthesis of Pt nanoparticles supported on TiO 2 nanotubes for enhanced methanol electro-oxidation

AU - Su, Nan

AU - Hu, Xiulan

AU - Zhang, Jianbo

AU - Huang, Huihong

AU - Cheng, Jiexu

AU - Yu, Jinchen

AU - Ge, Chao

PY - 2017/3/31

Y1 - 2017/3/31

N2 - A Pt/C/TiO 2 nanotube composite catalyst was successfully prepared for enhanced methanol electro-oxidation. Pt nanoparticles with a particle size of 2 nm were synthesized by plasma sputtering in water, and anatase TiO 2 nanotubes with an inner diameter of approximately 100 nm were prepared by a simple two-step anodization method and annealing process. Field-emission scanning electron microscopy images indicated that the different morphologies of TiO 2 synthesized on the surface of Ti foils were dependent on the different anodization parameters. The electrochemical performance of Pt/C/TiO 2 catalysts for methanol oxidation showed that TiO 2 nanotubes were more suitable for use as Pt nanoparticle support materials than irregular TiO 2 short nanorods due to their tubular morphology and better electronic conductivity. X-ray photoelectron spectroscopy characterization showed that the binding energies of the Pt 4f of the Pt/C/TiO 2 nanotubes exhibited a slightly positive shift caused by the relatively strong interaction between Pt and the TiO 2 nanotubes, which could mitigate the poisoning of the Pt catalyst by CO ads , and further enhance the electrocatalytic performance. Thus, the as-obtained Pt/C/TiO 2 nanotubes composites may become a promising catalyst for methanol electro-oxidation.

AB - A Pt/C/TiO 2 nanotube composite catalyst was successfully prepared for enhanced methanol electro-oxidation. Pt nanoparticles with a particle size of 2 nm were synthesized by plasma sputtering in water, and anatase TiO 2 nanotubes with an inner diameter of approximately 100 nm were prepared by a simple two-step anodization method and annealing process. Field-emission scanning electron microscopy images indicated that the different morphologies of TiO 2 synthesized on the surface of Ti foils were dependent on the different anodization parameters. The electrochemical performance of Pt/C/TiO 2 catalysts for methanol oxidation showed that TiO 2 nanotubes were more suitable for use as Pt nanoparticle support materials than irregular TiO 2 short nanorods due to their tubular morphology and better electronic conductivity. X-ray photoelectron spectroscopy characterization showed that the binding energies of the Pt 4f of the Pt/C/TiO 2 nanotubes exhibited a slightly positive shift caused by the relatively strong interaction between Pt and the TiO 2 nanotubes, which could mitigate the poisoning of the Pt catalyst by CO ads , and further enhance the electrocatalytic performance. Thus, the as-obtained Pt/C/TiO 2 nanotubes composites may become a promising catalyst for methanol electro-oxidation.

KW - Direct methanol fuel cells

KW - Methanol electro-oxidation

KW - Nanocomposites

KW - Solution plasma

KW - TiO nanotubes

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JO - Applied Surface Science

JF - Applied Surface Science

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Plasma-induced synthesis of Pt nanoparticles supported on TiO ₂ nanotubes for enhanced methanol electro-oxidation

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