Preparation of SnO2-CNTs supported Pt catalysts and their electrocatalytic properties for ethanol oxidation

Pang, Haili; Lu, Jie; Chen, J.H.; Huang, Can; Liu, B.; Zhang, X.H.

doi:10.1016/j.electacta.2008.10.058

Cited by 75 publications

(45 citation statements)

References 33 publications

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“…Among these novel carbon materials, CNTs have intriguing features such as large active surface area, excellent electronic conductivity and high chemical stability, hence they are considered to be one of the promising candidates for Pt nanoparticles (NPs) support [7][8][9][10]14]. Since the pristine CNTs are chemically inert and hydrophobic, a majority of the research has been dedicated to modifying their surface in order to promote better dispersion of Pt NPs.…”

Section: Introductionmentioning

confidence: 99%

“…It is well recognized that the catalytic activity and stability of electrocatalysts are strongly dependent on the particle size and dispersion of the noble metal on the carbon support. In the pursuit of improving Pt utilization, a variety of nanostructured carbon materials including carbon nanotubes (CNTs) [3,[7][8][9][10], carbon nano fibers (CNFs) [11], carbon aerogel [12], and mesoporous carbon [13] have been investigated as potential catalyst supports.…”

Section: Introductionmentioning

confidence: 99%

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An Effective Approach towards the Immobilization of PtSn Nanoparticles on Noncovalent Modified Multi-Walled Carbon Nanotubes for Ethanol Electrooxidation

et al. 2016

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Abstract:In this article, we describe an effective method to tether Pt and PtSn nanoparticles (NPs) on polyelectrolyte modified multi-walled carbon nanotubes (MWCNTs) for ethanol electrooxidation. By using a polymer wrapping technique, positively charged polyethyleneimine (PEI) was attached onto carbon nanotubes (CNTs) to provide preferential linking sites for metal precursors. Well-dispersed Pt and PtSn nanocrystals (2-5 nm) were subsequently decorated on PEI-functionalized MWCNTs through the polyol reduction method. The successful non-covalent modification of MWCNTs was confirmed by Fourier transform infrared spectroscopy (FTIR) and Zeta potential measurements. Energy dispersive X-ray (EDX) spectrum indicates approximately 20 wt % Pt loading and a desirable Pt:Sn atomic ratio of 1:1. Electrochemical analysis demonstrated that the as-synthesized PtSn/PEI-MWCNTs nanocomposite exhibited improved catalytic activity and higher poison tolerance for ethanol oxidation as compared to Pt/PEI-MWCNTs and commercial Pt/XC-72 catalysts. The enhanced electrochemical performance may be attributed to the uniform dispersion of NPs as well as the mitigating of CO self-poisoning effect by the alloying of Sn element. This modification and synthetic strategy will be studied further to develop a diversity of carbon supported Pt-based hybrid nanomaterials for electrocatalysis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Effective Approach towards the Immobilization of PtSn Nanoparticles on Noncovalent Modified Multi-Walled Carbon Nanotubes for Ethanol Electrooxidation

et al. 2016

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“…Recently, a series of Pt/metal-oxide/C catalysts with excellent electrocatalytic activity such as Pt/CeO 2 /C [7][8][9][10], Pt/TiO 2 /C [11][12][13], Pt/RuO 2 /C [14] and Pt/SnO 2 /C [15,16] have been synthesized for methanol electrooxidation. Among various metal oxide co-catalysts/support, CeO 2 has received widespread attention for its abundant O-vacancy defects, lower price, better redox (Ce 4+ /Ce 3 + ) property and anti-corrosion ability in acid media [7].…”

Section: Introductionmentioning

confidence: 99%

CeO2 nanorods with high energy surfaces as electrocatalytical supports for methanol electrooxidation

You

Tian

et al. 2015

Electrochimica Acta

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“…PtSnO 2 catalysts supported by carbon materials were prepared mainly through two ways. One was simultaneous synthesis of Pt-SnO 2 on the surface of carbon material through the reduction of Pt and the hydrolysis of tin-containing precursors [25], and the other was preparing SnO 2 -C composite as a support [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Molten salts synthesis of tin dioxide/nitrogen-doped carbon composite as Pt catalyst support for methanol electro-oxidation

Wei

Guo

et al. 2015

J Mater Sci

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Tin dioxide/nitrogen-doped carbon composite was prepared from tin oxide/polyaniline composite by using LiCl-KCl molten salt and used as Pt catalyst support for methanol electro-oxidation. Transmission electron microscope showed that tin dioxide was uniformly distributed on the surface of nitrogen-doped carbon without obvious agglomeration. Compared with Pt catalysts supported by commercial carbon black Vulcan XC-72 and EC300J, the current density of Pt catalysts supported by the as-prepared support was more than 2 times higher after polarizing 1000 s at a fixed potential of 0.15 V (vs. Hg/Hg 2 SO 4 ), exhibiting increased activity and stability for methanol electro-oxidation. Moreover, onset potential of Pt catalyst supported by the as-prepared support was nearly 0.1 V lower than that of Pt catalyst supported by EC300J.

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Preparation of SnO2-CNTs supported Pt catalysts and their electrocatalytic properties for ethanol oxidation

Cited by 75 publications

References 33 publications

An Effective Approach towards the Immobilization of PtSn Nanoparticles on Noncovalent Modified Multi-Walled Carbon Nanotubes for Ethanol Electrooxidation

An Effective Approach towards the Immobilization of PtSn Nanoparticles on Noncovalent Modified Multi-Walled Carbon Nanotubes for Ethanol Electrooxidation

CeO2 nanorods with high energy surfaces as electrocatalytical supports for methanol electrooxidation

Molten salts synthesis of tin dioxide/nitrogen-doped carbon composite as Pt catalyst support for methanol electro-oxidation

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