Influence of organic species on surface area of bismuth molybdate catalysts in complexation and spray drying methods

Le, Minh-Tuan; Well, Willy J.M. van; Driessche, Isabel Van; Hoste, Serge

doi:10.1016/j.apcata.2004.03.007

Cited by 55 publications

(39 citation statements)

References 19 publications

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“…6c, d). The morphology at this temperature was similar to that observed by Le et al [23] when the three phases of bismuth molybdates were prepared by a complexation method with citric acid. In contrast with the samples obtained at lower temperatures (BM400 and BM450), the BM500 particles were well syntherized because of the higher temperature used during its formation.…”

Section: Sample Characterizationsupporting

confidence: 74%

Photocatalytic behavior of α-Bi2Mo3O12 prepared by the Pechini method: degradation of organic dyes under visible-light irradiation

2010

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Nanoparticles of a-Bi 2 Mo 3 O 12 were prepared by the Pechini method. The process of formation of the bismuth molybdate was followed by simultaneous thermogravimetric and differential thermal analysis (TGA/DTA). Different samples of a-Bi 2 Mo 3 O 12 were obtained at 400, 450, and 500°C, and characterized by X-ray powder diffraction (XRD), nitrogen physisorption (BET), and scanning electron microscopy (SEM). When observed by SEM, the morphology of the sample obtained at the lowest temperature consisted of semi-spherical particles with an average diameter of 150 nm. On the other hand, the highest calcination temperature led to the formation of sintered particles of 500-600 nm. The photocatalytic activity of a-Bi 2 Mo 3 O 12 was tested by photodegradation of the organic dyes rhodamine B (rhB) and indigo carmine (IC) under visible-light irradiation. The bismuth molybdate nanoparticles were able to bleach aqueous solutions of both organic dyes. The sample obtained at 400°C was the best photocatalyst with half-lives, t 1/2 , of 108 and 154 min for rhB and IC, respectively.

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Section: Sample Characterizationsupporting

confidence: 74%

Photocatalytic behavior of α-Bi2Mo3O12 prepared by the Pechini method: degradation of organic dyes under visible-light irradiation

2010

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“…Co-precipitation, high temperature solid-state reactions, spray drying or sol-gel syntheses are the most common methods used to prepare mixed oxide catalysts [1][2][3][4][5][6][7][8]. These routes require severe conditions and long calcination treatments at high temperatures to prepare crystalline materials.…”

Section: Introductionmentioning

confidence: 99%

Bismuth molybdates prepared by solution combustion synthesis for the partial oxidation of propene

Farin

Monteverde²,

Specchia³

et al. 2015

Catalysis Today

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“…The Bi 0.85 V 0.55 Mo 0.45 O 4 catalyst was synthesized by a sol-gel method, which allowed more homogeneous mixing of the components [20][21][22][23][24][25]. Thus, solution B was dropwise added to a suitable volume of solution A and concentrated HNO 3 was continuously added in order to preserve the high acidity of the medium and to prevent precipitation.…”

Section: Methodsmentioning

confidence: 99%

Synergy effects in mixed Bi2O3, MoO3 and V2O5 catalysts for selective oxidation of propylene

Truong

Fehrmann

et al. 2011

Res Chem Intermed

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In this work, the possible synergy effects between Bi2O3, MoO3 and V2O5, and between Bi2Mo3O12 and BiVO4, were investigated. The catalytic activity of the "mechanical mixture" of these compounds was measured. The mixture containing 36.96 mol% Bi2O3, 39.13 mol% MoO3 and 23.91 mol% V2O5 (21.43 mol% Bi2Mo3O12 and 78.57 mol% BiVO4), corresponding to the compound Bi1-x/3V1-xMoxO4 with x = 0.45 (Bi0.85V0.55Mo0.45O4), exhibited the highest activity for the selective oxidation of propylene to acrolein. The mixed sample prepared chemically by a sol-gel method possessed higher activity than that of mechanical mixtures

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Influence of organic species on surface area of bismuth molybdate catalysts in complexation and spray drying methods

Cited by 55 publications

References 19 publications

Photocatalytic behavior of α-Bi2Mo3O12 prepared by the Pechini method: degradation of organic dyes under visible-light irradiation

Photocatalytic behavior of α-Bi2Mo3O12 prepared by the Pechini method: degradation of organic dyes under visible-light irradiation

Bismuth molybdates prepared by solution combustion synthesis for the partial oxidation of propene

Synergy effects in mixed Bi2O3, MoO3 and V2O5 catalysts for selective oxidation of propylene

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