2019
DOI: 10.1088/1742-6596/1292/1/012014
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Nanostructured Tungsten Trioxide (WO3): synthesis, structural and morphological investigations

Abstract: Tungsten trioxide (WO3) has attracted considerable attention due to its promising and remarkable properties. In this study, we have prepared WO3 nanostructures via a simple chemical method using tungsten carbide (WC) as a precursor. This novel approach has many advantages such as high yields, simple methodology and easy work up. The X-ray diffraction (XRD) pattern initially revealed the formation of the intermediate phase of tungsten trioxide hydrate (WO3.H2O), then the complete transformation to pure WO3 afte… Show more

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Cited by 28 publications
(15 citation statements)
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“…3 B) at different angles that interpreted according to the XRD database and also via comparison with previously published articles, pointed to the formation of almost WO 3 and WO 3 .xH 2 O with different lattices, shown in Fig. 3 B, as the product of the reaction, which agreed with those reported in the literature 37 , 38 .
Figure 3 XRD patterns including ( A ) W filament, ( B ) WO 3 generated after introduction of humidity and ( C ) W-filament after the elimination of the memory effect.
…”
Section: Resultssupporting
confidence: 90%
“…3 B) at different angles that interpreted according to the XRD database and also via comparison with previously published articles, pointed to the formation of almost WO 3 and WO 3 .xH 2 O with different lattices, shown in Fig. 3 B, as the product of the reaction, which agreed with those reported in the literature 37 , 38 .
Figure 3 XRD patterns including ( A ) W filament, ( B ) WO 3 generated after introduction of humidity and ( C ) W-filament after the elimination of the memory effect.
…”
Section: Resultssupporting
confidence: 90%
“…In Figure 3 the broad absorption peaks at <1000 cm −1 indicate the presence of pure tungsten oxide. The band at 619 cm −1 is attributed to W–O stretching vibration, while bands at 801 and 762 cm −1 are attributed to the inter-bridge stretching O-W-O and the corner-sharing mode W-O-W, respectively [ 44 , 45 ]. Tungsten oxide synthesized from PTA + EtOH sol-gel has much sharper peaks due to a more orderly structure with well-expressed W-O stretching vibration.…”
Section: Resultsmentioning
confidence: 99%
“…Whereas the band at approximately ~1050 cm −1 is assigned to the C-F stretching in the -CF2-CF(R)-CF3 group; ~974 cm −1 , C-O-C stretching; additionally, the bands at 625, 517 cm −1 are believed to be attributed to the stretching of the C-S group and symmetric O-S-O bending [2,51,66]). On the other hand, the spectrum of monoclinic WO 3 showed a broad band in the range of 400-1000 cm −1 attributed to the vibration modes of the W-O bond, which confirms the formation of tungsten oxide (600 cm −1 , O-W-O stretching; 755 cm −1 , W-O-W bending; 945 cm −1 , W=O stretching; 997 cm −1 , W-O stretching [67][68][69]). After the incorporation of the WO 3 , the bands at 1466 and 1410 cm −1 , related to the undissociated -SO 3 H groups, diminished.…”
Section: Morphology and Propertiesmentioning
confidence: 77%