Electroactivity of titanium-supported nanoporous Pd–Pt catalysts towards formic acid oxidation

Yi, Qingfeng; Huang, Wu; Liu, Xiaoping; Xu, Guiyin; Zhou, Zhi‐Hua; Chen, Aicheng

doi:10.1016/j.jelechem.2008.03.012

Cited by 73 publications

(46 citation statements)

References 21 publications

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“…For practical application, the Pd-Pt catalysts have to be prepared as highly dispersed, uniform nanoparticles. Only a few literature reports exist describing the synthesis as well as characterization of bimetallic Pd-Pt nanoparticles for DFAFCs [22,[32][33][34]36]. Pt/Pd nanoparticles have been prepared by the spontaneous deposition of Pd onto carbon supported Pt nanoparticles [34,35].…”

Section: Introductionmentioning

confidence: 99%

Formic acid electro-oxidation on carbon supported PdxPt1−x (0≥x≥1) nanoparticles synthesized via modified polyol method

Baranova

Miles

Mercier

et al. 2010

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Formic acid electro-oxidation on carbon supported PdxPt1−x (0≥x≥1) nanoparticles synthesized via modified polyol method

Baranova

Miles

Mercier

et al. 2010

Electrochimica Acta

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“…All Nyquist plots exhibit semicircles except for 0, 0.2 and 0.4 mM formaldehyde which develop arcs with approaching lines. And with the increase of formaldehyde concentrations, the impedance values shift from the first quadrant at high frequencies to the second quadrant at lower frequencies, which may be related to the rate-determining step [18]. …”

Section: Resultsmentioning

confidence: 96%

A novel nanoporous palladium catalyst for formaldehyde electro-oxidation in alkaline media

Niu

2011

Rare Metals

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In this work palladium nanoparticles (nanoPd) were successfully fabricated using a hydrothermal method from the solution of PdCl 2 + EDTA + HCHO. SEM image of the nanoPd exhibits a novel three-dimensional porous texture, presenting high stability and significantly large real surface area. Electrocatalytic activity of the nanoPd towards formaldehyde oxidation in alkaline media was evaluated by cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). Electrooxidation of formaldehyde on the nanoPd electrode takes place at a low onset potential of ca. -0.85 V (vs SCE) and large anodic current densities. Chronoamperometric data of the nanoPd electrode shows high and stable anodic currents for formaldehyde oxidation. It was also observed that the steady-state current density shows a well linear increment with formaldehyde concentration in the range of 0 to 20 mM formaldehyde. EIS investigation at different formaldehyde concentrations presents very low values of charge transfer resistances for formaldehyde oxidation on the nanoPd. Results show that prepared nanoPd electrode is a highly efficient catalyst for formaldehyde oxidation in alkaline media.

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“…The experimental results indicate that flower-like Pd-graphene possesses the requisite surface structure and electronic properties to support rapid electron transfer in [Fe(CN) 6 ] 3-/4-. We calculated the electroactive surface area of the Pd-graphene/GCE, based on following equation [33]:…”

Section: Results and Discussion Characterizationmentioning

confidence: 99%

Preparation of flower-like Pd–graphene composites for simultaneous determination of catechol and hydroquinone

2015

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Substrate-selective flower-like Pd nanoparticles were prepared using a simple electrodeposition method. The flower-like Pd-graphene nanocomposites showed excellent electrochemical properties, as proven by electrochemical impedance and cyclic voltammetry. Developed to serve as a sensor for simultaneous determination of catechol (CT) and hydroquinone (HQ), the Pd-graphene nanocomposite-modified glassy carbon electrode (Pd-graphene/GCE) displayed good electrochemical catalytic activity toward CT and HQ, which was attributed to the flower-like composite structure, i.e. high electrical conductivity and larger surface area of Pd-graphene nanocomposites. Several kinetic parameters were calculated, including the electron transfer number (n), proton transfer number (m), charge transfer coefficient (c), and apparent heterogeneous electron transfer rate constant (ks). Under optimized conditions, the oxidation peak current was linear over a range from 0.075 to 5 mM. The detection limits were 1.25 9 10 -6 mol/L for HQ and 1.0 9 10 -6 mol/L for CT (S/N = 3). The proposed Pd-graphene/GCE was applied to the simultaneous determination of HQ and CT in Songshan Lake water samples.

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Electroactivity of titanium-supported nanoporous Pd–Pt catalysts towards formic acid oxidation

Cited by 73 publications

References 21 publications

Formic acid electro-oxidation on carbon supported PdxPt1−x (0≥x≥1) nanoparticles synthesized via modified polyol method

Formic acid electro-oxidation on carbon supported PdxPt1−x (0≥x≥1) nanoparticles synthesized via modified polyol method

A novel nanoporous palladium catalyst for formaldehyde electro-oxidation in alkaline media

Preparation of flower-like Pd–graphene composites for simultaneous determination of catechol and hydroquinone

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