Comparison study of electrocatalytic activity of reduced graphene oxide supported Pt–Cu bimetallic or Pt nanoparticles for the electrooxidation of methanol and ethanol

Li, Feihui; Guo, Yongqin; Chen, Mingxi; Qiu, H.; Sun, Xiying; Wang, Wei; Liu, Yu; Gao, Jianping

doi:10.1016/j.ijhydene.2013.08.093

Cited by 56 publications

(24 citation statements)

References 46 publications

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“…An important factor that has been using in the evaluation of the electrocatalyst is the tolerance to CO poison species formed during the MOR [14]. To determine the tolerance to the accumulation of carbonaceous species, were used the criterion of the ratio of the peak current in the forward sweep (If) and the peak current in the reverse sweep (Ib) [15], [16]. A higher value of the If/Ib ratio better oxidation of methanol and less poisoning of the electrocatalysts by the CO species are obtained [17].…”

Section: Resultsmentioning

confidence: 99%

Characterization Microstructural and Electrochemical of AgPd Alloy Bimetallic Nanoparticles

et al. 2017

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Bimetallic nanoparticles are of special interest for their potential applications to fuel cells, among the bimetallic systems, AuPd bimetallic nanoparticles have received great interest as they can be widely used as effective catalysts for various electrochemical reactions. Monodisperse AgPd alloy nanoparticles were synthesized by polyol method using silver nitrate and potassium tetrachloropalladate(II) in ethylene glycol as the reducing agent at 160°C. Structural, compositional and electrochemical characterizations of synthesized bimetallic nanoparticles were investigated. High-angle annular dark field scanning/transmission electron microscopy (HAADF-STEM) images and parallel beam X-ray diffraction (XRD) of the bimetallic nanoparticles were obtained. XRD and the contrast of the HAADF-STEM images show that the bimetallic nanoparticles have an alloy structure. Cyclic voltammetry was carried out in order to confirm the electrochemical responses of the AgPd/C electrocatalysts for methanol oxidation. Thanks to the narrow size distribution of the AgPd alloy bimetallic nanoparticles (9.15 nm) the supported AgPd/C electrocatalysts have high catalytic activity toward methanol electro-oxidation.

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Section: Resultsmentioning

confidence: 99%

Characterization Microstructural and Electrochemical of AgPd Alloy Bimetallic Nanoparticles

et al. 2017

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“…The current for methanol electrooxidation showed a rapid decay in the initial period for Pt/Cu-ZEA/RGO, Pt/ZEA/RGO and Pt/RGO electrodes, which was due to the formation of intermediate species during the methanol oxidation reaction, such as CO ads , CHO ads , etc. [55] The result showed that the current of Pt/Cu-ZEA/RGO, Pt/ZEA/RGO and Pt/RGO electrodes was reduced to 47.18%, 26.00% and 7.89% of the initial current after 2000 s, respectively. Furthermore, the Pt/Cu-ZEA/RGO electrode maintained a higher current, and its final current was around 40.67 mA/mg after 2000 s for methanol oxidation, which was about 2.9 and 13.56 times higher than that of Pt/ZEA/RGO and Pt/RGO electrodes, respectively.…”

Section: Electrochemical Performances Of As-prepared Electrodesmentioning

confidence: 95%

Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

Wang

et al. 2017

Chin. J. Chem.

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Cite this paper: Wang, S.; He, P.; He, M.; Dong, F.; Liu, H.; Lei, H.;Zhang, X.; He, S. Chin. J. Chem. 2018, 36, 37- ABSTRACT A novel Pt/Cu-zeolite A/graphene based electrocatalyst was successfully prepared by chemical reduction method for methanol electrooxidation. Graphite oxide and Cu functionalized zeolite A were simultaneously reduced by NaBH 4 to prepare Cu-zeolite A/graphene support which was used to deposit Pt nanoparticles. The nanostructure and composition of as-prepared Pt/Cu-zeolite A/graphene composites were characterized by X-ray diffractometer, X-ray fluorescence, Fourier transform infrared spectrometer and scanning electron microscopy. The electrocatalytic properties of Pt/Cu-zeolite A/graphene modified electrode for methanol oxidation were investigated by cyclic voltammetry and chronoamperometry in 0.10 mol/L H 2 SO 4 ＋0.50 mol/L CH 3 OH solution. Compared with Pt/zeolite A/graphene electrode and Pt/graphene electrode, Pt/Cu-zeolite A/graphene based electrode exhibited obviously enhanced current and higher electrocatalytic activity for methanol electrooxidation. The increased electrocatalytic activity was attributed to the presence of zeolite A and reduced graphene oxide based dual template, which significantly increased the effective electrode surface and facilitated the diffusion of analytes into the electroactive catalyst.

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“…2a, the XRD pattern for the Pt/C electrocatalyst exhibited peaks at 2h = 39.5, 45.9, 67.34, and 81.34°, which are characteristic of a face-centered cubic structure for Pt and corresponds to its (1 1 1), (2 0 0), (2 2 0), and (3 1 1) planes, respectively [24][25][26]. But for the XRD pattern of the Cu@Pt/C electrocatalyst, the characteristic peaks of a face-centered cubic structure for Pt show a shifting toward higher 2h values, being 2h = 40.87, 47.22, 69.54, and 83.98°, which correspond to its (1 1 1), (2 0 0), (2 2 0), and (3 1 1) planes, respectively [27,28]. The same behavior appeared in the XRD pattern of Cu@Pd when it was compared with commercial Pd/C.…”

Section: Physicochemical Characterization Of Cu@pd/c and Cu@pt C Elecmentioning

confidence: 99%

Electrooxidation of crude glycerol as waste from biodiesel in a nanofluidic fuel cell using Cu@Pd/C and Cu@Pt/C

Maya-Cornejo

Guerra‒Balcázar

Arjona

et al. 2016

Fuel

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Comparison study of electrocatalytic activity of reduced graphene oxide supported Pt–Cu bimetallic or Pt nanoparticles for the electrooxidation of methanol and ethanol

Cited by 56 publications

References 46 publications

Characterization Microstructural and Electrochemical of AgPd Alloy Bimetallic Nanoparticles

Characterization Microstructural and Electrochemical of AgPd Alloy Bimetallic Nanoparticles

Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

Electrooxidation of crude glycerol as waste from biodiesel in a nanofluidic fuel cell using Cu@Pd/C and Cu@Pt/C

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