Effects of anatase TiO2 with different particle sizes and contents on the stability of supported Pt catalysts

Zheng Zhi Jiang; Da Ming Gu; Zhen Bo Wang; Wei Li Qu; Ge Ping Yin; Ke Jian Qian

doi:10.1016/j.jpowsour.2011.05.063

Effects of anatase TiO₂ with different particle sizes and contents on the stability of supported Pt catalysts

Zheng Zhi Jiang
, Da Ming Gu
, Zhen Bo Wang^*
, Wei Li Qu
, Ge Ping Yin
, Ke Jian Qian

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Harbin Institute of Technology
Zhejiang Province Green Electric Power Products Quality Inspection Center

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

30 Scopus citations

Abstract

Pt/TiO₂-C catalyst with TiO₂ and carbon black as the mixed support has been synthesized by the microwave-assisted polyol process (MAPP). Effects of anatase TiO₂ with different particle sizes and contents on the stability of supported Pt catalysts have been systematically studied. X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammograms (CV), and accelerated potential cycling tests (APCT) have been carried out to present the influence degree. The experimental results indicate that the original electrochemically active specific surface areas (ESA) of the catalysts decrease with the increase of mean particle sizes of TiO₂ and TiO₂ contents. However, the activity of Pt/TiO₂-C-20 is very close to that of Pt/TiO₂-C-5 and the stability of Pt/TiO ₂-C-20 is the best after 1000 cycles APCT, illustrating that the optimized particle size of TiO₂ in Pt/TiO₂-C catalyst is 20 nm. Furthermore, the stability of the catalysts increase with the increase of TiO₂ contents in the mixed support. Taking into account both the activity and stability of various Pt/TiO₂-C catalysts, the optimized particle size of TiO₂ is 20 nm and the optimal TiO₂ content existed in the mixed support is 40%.

Original language	English
Pages (from-to)	8207-8215
Number of pages	9
Journal	Journal of Power Sources
Volume	196
Issue number	20
DOIs	https://doi.org/10.1016/j.jpowsour.2011.05.063
State	Published - 15 Oct 2011
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Mixed support
Proton exchange membrane fuel cell
Titanium dioxide content
Titanium dioxide particle size

Access to Document

10.1016/j.jpowsour.2011.05.063

Cite this

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title = "Effects of anatase TiO2 with different particle sizes and contents on the stability of supported Pt catalysts",

abstract = "Pt/TiO2-C catalyst with TiO2 and carbon black as the mixed support has been synthesized by the microwave-assisted polyol process (MAPP). Effects of anatase TiO2 with different particle sizes and contents on the stability of supported Pt catalysts have been systematically studied. X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammograms (CV), and accelerated potential cycling tests (APCT) have been carried out to present the influence degree. The experimental results indicate that the original electrochemically active specific surface areas (ESA) of the catalysts decrease with the increase of mean particle sizes of TiO2 and TiO2 contents. However, the activity of Pt/TiO2-C-20 is very close to that of Pt/TiO2-C-5 and the stability of Pt/TiO 2-C-20 is the best after 1000 cycles APCT, illustrating that the optimized particle size of TiO2 in Pt/TiO2-C catalyst is 20 nm. Furthermore, the stability of the catalysts increase with the increase of TiO2 contents in the mixed support. Taking into account both the activity and stability of various Pt/TiO2-C catalysts, the optimized particle size of TiO2 is 20 nm and the optimal TiO2 content existed in the mixed support is 40\%.",

keywords = "Mixed support, Proton exchange membrane fuel cell, Titanium dioxide content, Titanium dioxide particle size",

author = "Jiang, \{Zheng Zhi\} and Gu, \{Da Ming\} and Wang, \{Zhen Bo\} and Qu, \{Wei Li\} and Yin, \{Ge Ping\} and Qian, \{Ke Jian\}",

year = "2011",

month = oct,

day = "15",

doi = "10.1016/j.jpowsour.2011.05.063",

language = "英语",

volume = "196",

pages = "8207--8215",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

number = "20",

}

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T1 - Effects of anatase TiO2 with different particle sizes and contents on the stability of supported Pt catalysts

AU - Jiang, Zheng Zhi

AU - Gu, Da Ming

AU - Wang, Zhen Bo

AU - Qu, Wei Li

AU - Yin, Ge Ping

AU - Qian, Ke Jian

PY - 2011/10/15

Y1 - 2011/10/15

N2 - Pt/TiO2-C catalyst with TiO2 and carbon black as the mixed support has been synthesized by the microwave-assisted polyol process (MAPP). Effects of anatase TiO2 with different particle sizes and contents on the stability of supported Pt catalysts have been systematically studied. X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammograms (CV), and accelerated potential cycling tests (APCT) have been carried out to present the influence degree. The experimental results indicate that the original electrochemically active specific surface areas (ESA) of the catalysts decrease with the increase of mean particle sizes of TiO2 and TiO2 contents. However, the activity of Pt/TiO2-C-20 is very close to that of Pt/TiO2-C-5 and the stability of Pt/TiO 2-C-20 is the best after 1000 cycles APCT, illustrating that the optimized particle size of TiO2 in Pt/TiO2-C catalyst is 20 nm. Furthermore, the stability of the catalysts increase with the increase of TiO2 contents in the mixed support. Taking into account both the activity and stability of various Pt/TiO2-C catalysts, the optimized particle size of TiO2 is 20 nm and the optimal TiO2 content existed in the mixed support is 40%.

AB - Pt/TiO2-C catalyst with TiO2 and carbon black as the mixed support has been synthesized by the microwave-assisted polyol process (MAPP). Effects of anatase TiO2 with different particle sizes and contents on the stability of supported Pt catalysts have been systematically studied. X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammograms (CV), and accelerated potential cycling tests (APCT) have been carried out to present the influence degree. The experimental results indicate that the original electrochemically active specific surface areas (ESA) of the catalysts decrease with the increase of mean particle sizes of TiO2 and TiO2 contents. However, the activity of Pt/TiO2-C-20 is very close to that of Pt/TiO2-C-5 and the stability of Pt/TiO 2-C-20 is the best after 1000 cycles APCT, illustrating that the optimized particle size of TiO2 in Pt/TiO2-C catalyst is 20 nm. Furthermore, the stability of the catalysts increase with the increase of TiO2 contents in the mixed support. Taking into account both the activity and stability of various Pt/TiO2-C catalysts, the optimized particle size of TiO2 is 20 nm and the optimal TiO2 content existed in the mixed support is 40%.

KW - Mixed support

KW - Proton exchange membrane fuel cell

KW - Titanium dioxide content

KW - Titanium dioxide particle size

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DO - 10.1016/j.jpowsour.2011.05.063

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