Synthesis and characterization of WO3 nanostructures prepared by an aged-hydrothermal method

Huirache–Acuña, R.; Paraguay‐Delgado, F.; Albiter, Manuel A.; Lara‐Romero, Javier; Martínez-Sánchez, R.

doi:10.1016/j.matchar.2009.03.006

Cited by 85 publications

(31 citation statements)

References 30 publications

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“…The effect of additives on the formed phase and its morphology has been studied by the Ti-H 2 O 2 oxidation-hydrothermal combination method at room temperature [25]. Tungsten trioxide nanostructures can also be prepared by a low temperature hydrothermal route [26][27]. The recently developed microwave-assisted hydrothermal (M-H) technique [28][29], which is superior to conventional hydrothermal process due to (i) fast heating to the temperature of treatment and (ii) extremely rapid kinetics of crystallization, was successfully used for the TiO 2 synthesis [29][30].…”

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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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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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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“…However, considering the metal loading for the catalysts studied (W:Mo molar ratio of 1:1 (18 wt.%)), it could be expected that the major contribution to this band intensity might came from the W species; for this reason the band around 960 cm À1 can be assigned to the W@O symmetric stretching vibration mode of W 7 O 6À 24 species in an octahedral coordination [49,50], moreover, the small shoulder at 715 cm À1 could correspond to WO 3 [50][51][52]. Respect to the Mo species, Raman spectra exhibit a small shoulder at 983 cm À1 , which is characteristic region for the MoAOAMo stretching of various irregular formed polymolybdates [53].…”

Section: Raman Spectroscopymentioning

confidence: 99%

Synthesis, characterization and catalytic activity during hydrodesulphurization of dibenzothiophene of NiMoW catalysts supported on AlTi mixed oxides modified with MgO

Cervantes-Gaxiola¹,

Arroyo-Albiter²,

Maya-Yescas³

et al. 2012

Fuel

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“…Among many wet chemical syntheses, hydrothermal treatment was selected to synthesize WO X NPs as it seems to be the most facile, cost-effective, and well-studied technique, which additionally offers flexibility in possible nanomorphologies [6,[16][17][18][74][75][76][77]. An aqueous solution of peroxopolytungstic acid (PTA) [78,79] with controlled acidity [2] (addition of HCl) was used as a source of tungsten.…”

Section: Structure and Morphology Of Synthesized Productsmentioning

confidence: 99%

Metal Oxide Nanoparticle Engineering for Printed Electrochemical Applications

Wójcik

Pereira

Martins

et al. 2015

Handbook of Nanoelectrochemistry

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Engineering procedures governing the selection or development of printable nanostructured metal oxide nanoparticles for chromic, photovoltaic, photocatalytic, sensing, electrolyte-gated TFTs, and power storage applications are established in this chapter. The main focus is given on how to perform the material selection and formulation of printable dispersion in order to develop functional films for electrochemical applications.This chapter is divided into four main parts. Firstly, a brief introduction on electrochemically active nanocrystalline metal oxide films developed via printing techniques is given. This is followed by the description of the film morphology, structure, and required functionality. A theoretical approach to understand the impact of size and shape of nanoparticles on an ink formulation and electrochemical performance being the subject of the third section provides a greater control over the material selection. We attempt to describe these properties and show that for a given material, geometry and size of the nanoparticles have a major influence on the electrochemical reactivity and response time. This gives the ability to tune the performance of the film simply by varying the morphology of incorporated nanostructures. This section is completed by the recommendations on each major step of an ink formulation, together with imposed critical constraints concerning the fluid control. Finally, the performance of the ink-jet-printed dual-phase electrochromic films is discussed as a case study.By providing such a rather systematic survey, we aim to stress the importance of proper design strategy that would result in both improved physicochemical properties of nanoparticle-loaded inks and enhanced electrochemical performance of printed functional films.

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Synthesis and characterization of WO3 nanostructures prepared by an aged-hydrothermal method

Cited by 85 publications

References 30 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

Synthesis, characterization and catalytic activity during hydrodesulphurization of dibenzothiophene of NiMoW catalysts supported on AlTi mixed oxides modified with MgO

Metal Oxide Nanoparticle Engineering for Printed Electrochemical Applications

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