Structure and chemical composition of supported Pt–Sn electrocatalysts for ethanol oxidation

Jiang, Luhua; Sun, Gongquan; Sun, Shi‐Gang; Liu, Jiangguo; Tang, Shuihua; Li, Huanqiao; Zhou, Bing; Xin, Qin

doi:10.1016/j.electacta.2005.03.018

Cited by 271 publications

(168 citation statements)

References 22 publications

(33 reference statements)

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“…LaB 6 standard was used as a reference to correct for instrument contribution to the width of the diffraction peaks. Microstructural investigations and evaluation of particles' size were done on transmission electron microscope (TEM) images acquired using Hitachi H7600 LaB 6 and FEI Tecnai G2 FEG TEMs. The TEM samples were prepared by dispersing the catalyst powder on carbon-coated 300 mesh grids.…”

Section: Physicochemical Characterizationmentioning

confidence: 99%

“…During the dissociative adsorption of ethanol on Pt sites, Sn or Ru supplies the O-species for the oxidation of CO-like species [2,[6][7][8][9][10][11][12]. Jiang et al [6] established a correlation between the structures of PtSn alloy and Pt-SnO 2 , prepared by the polyol method, which respectively inhibit and allowing the hydrogen adsorption/desorption process. It was deduced that SnO 2 in the vicinity of Pt has the ability to promote the oxidation of CO-like species resulting from ethanol oxidation.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Fatih

Neburchilov

Alzate

et al. 2010

Journal of Power Sources

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Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells Fatih, K.; Neburchilov, V.; Alzate, V.; Neagu, R.; Wang, H. 195 (2010) [7168][7169][7170][7171][7172][7173][7174][7175] Contents lists available at ScienceDirect /C electrocatalysts were prepared by a known impregnation-reduction (borohydride) method. The microstructure and chemical composition were determined by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and transmission electron microscopy (TEM). The activity of the electrocatalysts for EOR was compared to commercial Pt 67 Ru 33 /C (HISPEC5000) using linear sweep voltammetry (LSV) based on similar Pt loading. The results of this study show that electrocatalyst composition with 10 and 20% Ir (wt.%) exhibit higher electrocatalytic activity than the commercial PtRu electrocatalyst. 10 Sn 30 /C exhibited both a higher performance with a specific power density of 29 mW mg Pt −1 without O 2 backpressure at the cathode and an excellent long-term stability in a DEFC operating at 90 • C. Journal of Power Sources Journal of Power SourcesCrown

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Section: Physicochemical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Fatih

Neburchilov

Alzate

et al. 2010

Journal of Power Sources

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“…Nevertheless, the effect of Sn content was not clear. The group of Lamy et al, Zhou et al, and Kim et al have found the optimum composition of Sn in the range of 10-20 % [13,17], 33-40 % [2,18,19]. and 20-33 % [14], respectively.…”

Section: Introductionmentioning

confidence: 99%

Electro-oxidation of Ethanol on Carbon Supported PtSn and PtSnNi Catalysts

Hidayati

Scott

2016

Bull. Chem. React. Eng. Catal.

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Even though platinum is known as an active electro-catalyst for ethanol oxidation at low temperatures (< 100 o C), choosing the electrode material for ethanol electro-oxidation is a crucial issue. It is due to its property which easily poisoned by a strong adsorbed species such as CO. PtSn-based electro-catalysts have been identified as better catalysts for ethanol electro-oxidation. The third material is supposed to improve binary catalysts performance. This work presents a study of the ethanol electro-oxidation on carbon supported Pt-Sn and Pt-Sn-Ni catalysts. These catalysts were prepared by alcohol reduction. Nano-particles with diameters between 2.5-5.0 nm were obtained. The peak of (220) crystalline face centred cubic (fcc) Pt phase for PtSn and PtSnNi alloys was repositioned due to the presence of Sn and/or Ni in the alloy. Furthermore, the modification of Pt with Sn and SnNi improved ethanol and CO electro-oxidation.

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“…6,7 Recently, some investigators have reported that SnO 2 species can produce hydroxy radical species at lower potential than Pt. Thus, CO-like intermediate residues react with hydroxy radical species in the vicinity of Pt particles to free Pt active sites based on the bifunctional mechanism.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous PtSnO2/C Catalyst with Enhanced Catalytic Activity for Ethanol Electro-oxidation

2018

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In this paper, we report the synthesis, characterization, and electrochemical evaluation of a mesoporous PtSnO 2 /C catalyst, called PtSnO 2 (M)/C, with a nominal Pt : Sn ratio of 3 : 1. Brunauer-Emmett-Teller and transmission electron microscopy characterizations showed the obvious mesoporous structure of SnO 2 in PtSnO 2 (M)/C catalyst. X-ray photoelectron spectroscopy analysis exhibited the interaction between Pt and mesoporous SnO 2 . Compared with Pt/C and commercial PtSnO 2 /C catalysts, PtSnO 2 (M)/C catalyst has a lower active site, but higher catalytic activity for ethanol electro-oxidation reaction (EOR). The enhanced activity could be attributed to Pt nanoparticles deposited on mesoporous SnO 2 that could decrease the amount of poisonous intermediates produced during EOR by the interaction between Pt and mesoporous SnO 2 .

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Structure and chemical composition of supported Pt–Sn electrocatalysts for ethanol oxidation

Cited by 271 publications

References 22 publications

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Electro-oxidation of Ethanol on Carbon Supported PtSn and PtSnNi Catalysts

Mesoporous PtSnO2/C Catalyst with Enhanced Catalytic Activity for Ethanol Electro-oxidation

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