TiO2 nanofibers heterogeneously wrapped with reduced graphene oxide as efficient Pt electrocatalyst supports for methanol oxidation

Wei Zhuang; Linjiao He; Jiahua Zhu; Rong An; Xinbing Wu; Liwen Mu; Xiaohua Lu; Linghong Lu; Xiaojing Liu; Hanjie Ying

doi:10.1016/j.ijhydene.2015.01.042

TiO₂ nanofibers heterogeneously wrapped with reduced graphene oxide as efficient Pt electrocatalyst supports for methanol oxidation

Wei Zhuang, Linjiao He, Jiahua Zhu, Rong An, Xinbing Wu, Liwen Mu, Xiaohua Lu, Linghong Lu, Xiaojing Liu, Hanjie Ying

COLLEGE OF BIOTECHNOLOGY AND PHARMACEUTICAL ENGINEERING

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

47 Scopus citations

Abstract

The exploration of advanced catalyst supports is a promising route to obtain electrocatalysts with high activity and durability. Herein, TiO₂ nanofibers heterogeneously wrapped with reduced graphene oxide (rGO) designated as h-rGO@TiO₂-rGO were synthesized by a facile deposition and hydrothermal method and served as support for Pt nanoparticles (Pt NPs) used for methanol oxidation. The morphology and electrocatalytic properties of the catalysts were investigated by transmission electron microscopy, X-ray diffraction, Raman spectroscopy, cyclic voltammetry, and chronoamperometry. Pt NPs supported on h-rGO@TiO₂-rGO showed uniform dispersion with a mean particle size of 3.4 nm. The electrocatalytic activity and stability of Pt/h-rGO@TiO₂-rGO both improved remarkably compared with Pt/rGO and Pt/TiO₂. This enhancement originated from the porous structure that promoted the homogeneous dispersion and enlarged the electrochemical active surface area (ECSA) of Pt NPs (ECSA_CO = 30.95 m² g^-1). Thus, the h-rGO@TiO₂-rGO hybrid could be developed as a promising electrocatalyst support material in fuel cells.

Original language	English
Pages (from-to)	3679-3688
Number of pages	10
Journal	International Journal of Hydrogen Energy
Volume	40
Issue number	9
DOIs	https://doi.org/10.1016/j.ijhydene.2015.01.042
State	Published - 9 Mar 2015

Keywords

Electrocatalyst support
Methanol oxidation
Reduced graphene oxide
TiO nanofiber

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2015.01.042

Cite this

@article{23c1d3a501f34f9abeaac98a5f0a760d,

title = "TiO2 nanofibers heterogeneously wrapped with reduced graphene oxide as efficient Pt electrocatalyst supports for methanol oxidation",

abstract = "The exploration of advanced catalyst supports is a promising route to obtain electrocatalysts with high activity and durability. Herein, TiO2 nanofibers heterogeneously wrapped with reduced graphene oxide (rGO) designated as h-rGO@TiO2-rGO were synthesized by a facile deposition and hydrothermal method and served as support for Pt nanoparticles (Pt NPs) used for methanol oxidation. The morphology and electrocatalytic properties of the catalysts were investigated by transmission electron microscopy, X-ray diffraction, Raman spectroscopy, cyclic voltammetry, and chronoamperometry. Pt NPs supported on h-rGO@TiO2-rGO showed uniform dispersion with a mean particle size of 3.4 nm. The electrocatalytic activity and stability of Pt/h-rGO@TiO2-rGO both improved remarkably compared with Pt/rGO and Pt/TiO2. This enhancement originated from the porous structure that promoted the homogeneous dispersion and enlarged the electrochemical active surface area (ECSA) of Pt NPs (ECSACO = 30.95 m2 g-1). Thus, the h-rGO@TiO2-rGO hybrid could be developed as a promising electrocatalyst support material in fuel cells.",

keywords = "Electrocatalyst support, Methanol oxidation, Reduced graphene oxide, TiO nanofiber",

author = "Wei Zhuang and Linjiao He and Jiahua Zhu and Rong An and Xinbing Wu and Liwen Mu and Xiaohua Lu and Linghong Lu and Xiaojing Liu and Hanjie Ying",

year = "2015",

month = mar,

day = "9",

doi = "10.1016/j.ijhydene.2015.01.042",

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TY - JOUR

T1 - TiO2 nanofibers heterogeneously wrapped with reduced graphene oxide as efficient Pt electrocatalyst supports for methanol oxidation

AU - Zhuang, Wei

AU - He, Linjiao

AU - Zhu, Jiahua

AU - An, Rong

AU - Wu, Xinbing

AU - Mu, Liwen

AU - Lu, Xiaohua

AU - Lu, Linghong

AU - Liu, Xiaojing

AU - Ying, Hanjie

PY - 2015/3/9

Y1 - 2015/3/9

N2 - The exploration of advanced catalyst supports is a promising route to obtain electrocatalysts with high activity and durability. Herein, TiO2 nanofibers heterogeneously wrapped with reduced graphene oxide (rGO) designated as h-rGO@TiO2-rGO were synthesized by a facile deposition and hydrothermal method and served as support for Pt nanoparticles (Pt NPs) used for methanol oxidation. The morphology and electrocatalytic properties of the catalysts were investigated by transmission electron microscopy, X-ray diffraction, Raman spectroscopy, cyclic voltammetry, and chronoamperometry. Pt NPs supported on h-rGO@TiO2-rGO showed uniform dispersion with a mean particle size of 3.4 nm. The electrocatalytic activity and stability of Pt/h-rGO@TiO2-rGO both improved remarkably compared with Pt/rGO and Pt/TiO2. This enhancement originated from the porous structure that promoted the homogeneous dispersion and enlarged the electrochemical active surface area (ECSA) of Pt NPs (ECSACO = 30.95 m2 g-1). Thus, the h-rGO@TiO2-rGO hybrid could be developed as a promising electrocatalyst support material in fuel cells.

AB - The exploration of advanced catalyst supports is a promising route to obtain electrocatalysts with high activity and durability. Herein, TiO2 nanofibers heterogeneously wrapped with reduced graphene oxide (rGO) designated as h-rGO@TiO2-rGO were synthesized by a facile deposition and hydrothermal method and served as support for Pt nanoparticles (Pt NPs) used for methanol oxidation. The morphology and electrocatalytic properties of the catalysts were investigated by transmission electron microscopy, X-ray diffraction, Raman spectroscopy, cyclic voltammetry, and chronoamperometry. Pt NPs supported on h-rGO@TiO2-rGO showed uniform dispersion with a mean particle size of 3.4 nm. The electrocatalytic activity and stability of Pt/h-rGO@TiO2-rGO both improved remarkably compared with Pt/rGO and Pt/TiO2. This enhancement originated from the porous structure that promoted the homogeneous dispersion and enlarged the electrochemical active surface area (ECSA) of Pt NPs (ECSACO = 30.95 m2 g-1). Thus, the h-rGO@TiO2-rGO hybrid could be developed as a promising electrocatalyst support material in fuel cells.

KW - Electrocatalyst support

KW - Methanol oxidation

KW - Reduced graphene oxide

KW - TiO nanofiber

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