Pt–WO3 supported on carbon nanotubes as possible anodes for direct methanol fuel cells☆

Ti-based electroconductive mixed oxides were deposited onto activated carbon by using three different sol-gel-based multistep synthesis routes. As demonstrated by X-ray diffraction, high crystallinity of the tungsten-loaded rutile was achieved by a sequence of annealing in inert atmosphere at 750°C and a short reductive treatment at 650°C.Formation of the rutile phase on the carbon support before the high temperature treatment has been proved to be the prerequisite for complete W incorporation into the rutile lattice. The structural and compositional properties of the mixed oxides were explored by transmission electron microscopy, temperature programmed reduction and X-ray photoelectron spectroscopy. Anode electrocatalysts were formulated by loading the composite of the activated carbon and the Ti-based electroconductive mixed oxides with 40 wt% Pt. Enhanced CO tolerance along with considerable stability was demonstrated for the electrocatalyst prepared using the Ti 0.7 W 0.3 O 2 -C composite material with high degree of W incorporation.

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“…Moreover, in the literature a variety of synthesis procedures of different carbonsupported Pt-WO x composite materials are available [9,13].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of novel Ti0.7W0.3O2–C composite materials for Pt-based anode electrocatalysts with enhanced CO tolerance

Gubán

Borbáth

Pászti

et al. 2015

Applied Catalysis B: Environmental

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“…Behavior of the prepared CMEs was stable and reproducible allowing to determine DA and AA simultaneously. CNTs, synthesized by the template carbonization of poly(pyrrole), were deposited on an alumina membrane and used as a support for the Pt-WO 3 , Pt-Ru, or Pt catalyst [222]. The resulting solids have been used as electrode materials for methanol oxidation in more acidic solutions than those used in case of other electrodes.…”

Section: Carbon Nanotubes As Catalyst Supports In Heterogeneous Catalmentioning

confidence: 99%

Electrocatalytic Properties and Sensor Applications of Fullerenes and Carbon Nanotubes

2003

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The electrochemical behavior of fullerene and fullerene derivatives are reviewed with special reference to their catalytic and sensor applications. Recent work on carbon nanotubes, used as catalyst supports in heterogeneous catalysis and sensor development is also presented. An overview of recent progress in the area of fullerene electrochemistry is included. Several cases of electrocatalytic dehalogenation of alkyl halides, assisted by the electrode charge transfer to fullerenes, are discussed. Research work on the electrocatalysis of biomolecules, such as hemin, cytochrome c, DNA, coenzymes, glucose, ascorbic acid, dopamine, etc. have also been considered. Based on the studies of the interaction of fullerenes, fullerene derivatives, and carbon nanotubes with other molecules and biomolecules in particular, the possibilities for the preparation of electrochemical sensors and their application in electroanalytical chemistry are highlighted.

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“…18 Many papers have reported that CNTsupported Pt or Pt-Ru nanoparticles displayed excellent electrocatalytic activity for methanol oxidation. 19,20 Tang et al 21 also reported the high dispersion of Pt nanoparticles on well-aligned carbon nanotubes and good electrocatalytical property for oxygen reduction.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Pt‐MoO_x/CNT Electrode and Its Electrocatalytic Property for Ethanol Electrooxidation

Wang

Cui

2006

Chin. J. Chem.

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MoO x , a non-noble secondary catalyst instead of noble metal Ru, was dispersed on carbon nanotubes (CNT) and then the primary catalyst Pt was electrodeposited on MoO x /CNT/graphite electrode by potential-step method. CNT used was grown directly on graphite disk by chemical vapor deposition. The Pt-MoO x /CNT/graphite electrode was characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy. The electrocatalytic property and the long-term cyclic stability of Pt-MoO x /CNT/graphite electrode for ethanol oxidation have been investigated in 1.0 mol/L CH 3 CH 2 OH＋0.1 mol/L H 2 SO 4 by cyclic voltammetry. On the other hand, the effect of the loading mass of MoO x on specific activity of Pt-MoO x /CNT/graphite electrode and the activation energy of ethanol oxidation were investigated. The Pt-MoO x /CNT/graphite electrode shows good long-term cyclic stability. 82% value of peak current density at the oxidation peak around 0.69 V (vs. SCE) remains after 500 cycles, which is higher than those of Pt/CNT/graphite and Pt-Ru/CNT/graphite electrodes with the corresponding values of 55% and 72%, respectively.

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Pt–WO3 supported on carbon nanotubes as possible anodes for direct methanol fuel cells☆

Cited by 148 publications

References 18 publications

Preparation and characterization of novel Ti0.7W0.3O2–C composite materials for Pt-based anode electrocatalysts with enhanced CO tolerance

Preparation and characterization of novel Ti0.7W0.3O2–C composite materials for Pt-based anode electrocatalysts with enhanced CO tolerance

Electrocatalytic Properties and Sensor Applications of Fullerenes and Carbon Nanotubes

Preparation of Pt‐MoO_x/CNT Electrode and Its Electrocatalytic Property for Ethanol Electrooxidation

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Pt–WO3 supported on carbon nanotubes as possible anodes for direct methanol fuel cells☆

Cited by 148 publications

References 18 publications

Preparation and characterization of novel Ti0.7W0.3O2–C composite materials for Pt-based anode electrocatalysts with enhanced CO tolerance

Preparation and characterization of novel Ti0.7W0.3O2–C composite materials for Pt-based anode electrocatalysts with enhanced CO tolerance

Electrocatalytic Properties and Sensor Applications of Fullerenes and Carbon Nanotubes

Preparation of Pt‐MoOx/CNT Electrode and Its Electrocatalytic Property for Ethanol Electrooxidation

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Preparation of Pt‐MoO_x/CNT Electrode and Its Electrocatalytic Property for Ethanol Electrooxidation