Studies on the structural, morphological and optical properties of HCl assisted vanadium oxide/tin oxide nanocomposites prepared by sol-gel method

Subramaniam, Mohana Priya; Arunachalam, Geetha; Ramamurthi, K.

doi:10.1016/j.apsusc.2018.02.214

Cited by 10 publications

(2 citation statements)

References 40 publications

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“…The highly intense peak at 20.16 ° shows well-ordered and regular crystal growth along c-direction (001). [15][16] The lattice parameters calculated from the patterns are a = 11.53 Å, b = 3.57 Å, c = 4.375 Å and these parameters well match the JCPDS data.…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 63%

Hydrothermally Prepared Vanadium Oxide Nanostructures for Photocatalytic Application

Babar¹,

Pisal²,

Sutar³

et al. 2022

ES Energy Environ.

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In the present work, vanadium pentoxide (V 2 O 5 ) nanoparticles have been successfully prepared by a simple hydrothermal method. The effect of annealing on the photocatalytic degradation of methylene blue (MB) dye is studied. Structure of V 2 O 5 is confirmed by X-ray diffraction (XRD) and Raman spectroscopy, while Fourier transform infrared (FTIR) spectroscopy is used for functional group detection. Agglomerated nanoparticle morphology is observed via scanning electron microscopy (SEM). The direct band gap of V 2 O 5 is 2.63-2.81 eV calculated using ultraviolet-visible (UV) spectra. Finally, the photocatalytic degradation of MB dye by V 2 O 5 is studied. The results indicate a promising and enhanced degradation property of calcinated V 2 O 5 . Very small quantity calcinated V 2 O 5 shows about 68% degradation of MB within 80 min, and the rate constant for calcinated product is 9.9 × 10 -5 s -1 .

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Section: X-ray Diffraction (Xrd)supporting

confidence: 63%

Hydrothermally Prepared Vanadium Oxide Nanostructures for Photocatalytic Application

Babar¹,

Pisal²,

Sutar³

et al. 2022

ES Energy Environ.

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show abstract

“…22), 23) Compared with HNO 3 , HCl additives have been used to improve the structures, morphologies, and properties of gel-derived materials. 24),25) Subramaniam et al 24) showed that gel-derived V 2 O 5 /SnO 2 nanocompos-ites exhibited improved crystallinity, remarkably different surface morphologies, and an increased transmittance range owing to the addition of HCl during the sol-gel process. Subramaniam et al 25) also reported that HCl additives significantly modified the crystalline size, morphology, and optical properties of SnO 2 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Crystallization behavior, chemical microstructure and surface morphology of a little HCl assisted lithium disilicate powders prepared by sol–gel method

Lyu,

Seo,

Park

et al. 2024

J. Ceram. Soc. Japan

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The effects of HCl additives (HCl/Si molar ratio = 0.1) on the crystallization behavior, chemical microstructure, and surface morphology of gel-derived lithium disilicate (Li 2 Si 2 O 5 , LD) powders were investigated using sol-gel and heat treatment processes. With HCl additives, the lithium metasilicate (Li 2 SiO 3 , LM) phase preferentially crystallized even at 200 °C for post-heat treated gel-derived LD powders. Moreover, several Li + ions might not be attached to the [SiO 4 ] network but could be located in the residual pores and surfaces in the form of Li(H 2 O) n + ions for pre-heat treated gel-derived LD powders. Meanwhile, Cl ¹ ions could occupy residual pores and surfaces, and be located in the [SiO 4 ] network by forming Si-Cl bonds. In contrast, without HCl additives, only simultaneous crystallization of LM and LD phases appeared at 600 °C. Correspondingly, fewer Li(H 2 O) n + ions were estimated to be located in the residual pores and surfaces, and more Li + ions were located in the [SiO 4 ] network. With HCl additives, the surface morphology of pre-heat treated gel-derived LD powders was characterized by larger particles and smaller voids, in contrast to those without HCl additives, which comprised smaller particles and larger voids. The unique crystallization behavior might be caused by the interactions that occurred between Li(H 2 O) n + ions and Si-OH groups, as well as Cl ¹ ions and Si-Cl bonds in the chemical microstructure of pre-heat treated gel-derived LD powders. These results indicate that HCl additives could effectively modify crystallization behaviors, chemical microstructure, and surface morphologies of gel-derived LD powders, by reacting with LiOH•H 2 O precursors during the sol-gel process.

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Electrospun SnO2 and its composite V2O5 nanofibers for thermoelectric power generator

Subramaniam

Veluswamy

Satheesh

et al. 2021

J Sol-Gel Sci Technol

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Studies on the structural, morphological and optical properties of HCl assisted vanadium oxide/tin oxide nanocomposites prepared by sol-gel method

Cited by 10 publications

References 40 publications

Hydrothermally Prepared Vanadium Oxide Nanostructures for Photocatalytic Application

Hydrothermally Prepared Vanadium Oxide Nanostructures for Photocatalytic Application

Crystallization behavior, chemical microstructure and surface morphology of a little HCl assisted lithium disilicate powders prepared by sol–gel method

Electrospun SnO2 and its composite V2O5 nanofibers for thermoelectric power generator

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