Sol–gel synthesis of mesoporous WO3–TiO2 composite thin films for photochromic devices

Djaoued, Yahia; Balaji, S.; Beaudoin, Normand

doi:10.1007/s10971-012-2948-7

Cited by 36 publications

(21 citation statements)

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“…This is attributed to the many benefits of this simple and cost effective method, which include the synthesis of nano-sized crystallized powder of high purity and homogeneity at relatively low temperature, possibility of tuning stoichiometry and morphology and easy preparation of composite materials [69,70]. Other photocatalysts such as ZrO 2 [71], ZnO [72], and WO 3 [73] have also been fabricated via the sol-gel process.…”

Section: Titanium Dioxide: Synthesis and Surface Modification Strategmentioning

confidence: 99%

Synthesis and Surface Modification of TiO2-Based Photocatalysts for the Conversion of CO2

2020

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Among all greenhouse gases, CO2 is considered the most potent and the largest contributor to global warming. In this review, photocatalysis is presented as a promising technology to address the current global concern of industrial CO2 emissions. Photocatalysis utilizes a semiconductor material under renewable solar energy to reduce CO2 into an array of high-value fuels including methane, methanol, formaldehyde and formic acid. Herein, the kinetic and thermodynamic principles of CO2 photoreduction are thoroughly discussed and the CO2 reduction mechanism and pathways are described. Methods to enhance the adsorption of CO2 on the surface of semiconductors are also presented. Due to its efficient photoactivity, high stability, low cost, and safety, the semiconductor TiO2 is currently being widely investigated for its photocatalytic ability in reducing CO2 when suitably modified. The recent TiO2 synthesis and modification strategies that may be employed to enhance the efficiency of the CO2 photoreduction process are described. These modification techniques, including metal deposition, metal/non-metal doping, carbon-based material loading, semiconductor heterostructures, and dispersion on high surface area supports, aim to improve the light absorption, charge separation, and active surface of TiO2 in addition to increasing product yield and selectivity.

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Section: Titanium Dioxide: Synthesis and Surface Modification Strategmentioning

confidence: 99%

Synthesis and Surface Modification of TiO2-Based Photocatalysts for the Conversion of CO2

2020

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“…Potentially, they can be used as self-cleaning [6][7][8], photochromic [9], and superhydrophobic/hydrophilic coatings [10,11], and just recently as matrices for bioencapsulation, drug delivery [12,13], andin tissue engineering [14].…”

Section: Introductionmentioning

confidence: 99%

The sol–gel synthesis of cotton/TiO2 composites and their antibacterial properties

Galkina

Sycheva

Blagodatskiy

et al. 2014

Surface and Coatings Technology

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Access to the published version may require journal subscription. Published with permission from: Elsevier.Standard set statement from the publisher: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT AbstractPresent work is devoted to investigation of structure and functional properties of hybrid nanomaterials based on the TiO 2 -modified cellulose fibers of cotton. The titania hydrosol was successfully prepared using the titanium tetraisopropoxide as precursor and the nitric acid as peptizing agent via the low-temperature sol-gel synthesis in aqueous medium and applied to cotton fabric. For cross-linking of titania nanoparticles to cotton the 1,2,3,4-butanetetracarboxylic acid (BTCA) was used as a spacer. The morphology and composition of the surface pure and TiO 2 modified cotton fibers were investigated by the Scanning Electron Microscopy (SEM). The cotton/TiO 2 composite was characterized by the dielectric permittivity.For the estimation of total titania concentration, all samples were calcined at 650°C. The antimicrobial activity of the treated TiO 2 cotton fibers was investigated against Escherichia coli as a model Gram -negative bacteria after exposure to UV-irradiation for 10 minutes.

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“…3b. Besides the modes at about 144 cm À1 (E g(1) ), 197 cm À1 (E g (2) ), 393 cm À1 (B 1g(1) ), 516 cm À1 (A 1g , B 1g(2) ) and 638 cm À1 (E g (3) ) which belong to anatase phase of TiO 2 [35], several modes characteristic for monoclinic WO 3 phase are present [22,36,37]. The broad band at $703 cm À1 and strong band at $793 cm À1 are assigned to the stretching (O-W-O) modes of the bridging oxygen of the WO 6 octahedra.…”

Section: Raman and Diffuse Reflectance Spectramentioning

confidence: 99%

WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties

DohL·eviL·-MitroviL·

StojadinoviL·

Lozzi

et al. 2016

Materials Research Bulletin

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Sol–gel synthesis of mesoporous WO3–TiO2 composite thin films for photochromic devices

Cited by 36 publications

References 50 publications

Synthesis and Surface Modification of TiO2-Based Photocatalysts for the Conversion of CO2

Synthesis and Surface Modification of TiO2-Based Photocatalysts for the Conversion of CO2

The sol–gel synthesis of cotton/TiO2 composites and their antibacterial properties

WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties

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