Synthesis, characterization and adsorption behavior of Mo(VI) and W(VI) ions on titanium dioxide nanoparticles containing anatase modification

Demina, Polina A.; Kuz’michev, Alexey N.; Tsybinsky, A. M.; Obolenskaya, L. N.; Кузьмичева, Г. М.; Domoroshchina, E. N.; Савинкина, Е. В.

doi:10.1007/s13204-013-0279-9

Cited by 4 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanosized titanium dioxides (NTD) are photostable and environmentally safe, have high quantum yield for the UV photocatalytic oxidation, and exhibit adsorption properties due to the formation of highly reactive surface hydroxyl groups (Demina et al 2014;Dadachov 2006). In addition, NTD show a bactericidal effect against pathogenic microorganisms (Ismagilov et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Changing the characteristics and properties of zeolite Y and nano-anatase in the formation of a nano-anatase/Y composite with improved photocatalytic and adsorption properties

et al. 2018

View full text Add to dashboard Cite

Zeolite Y and the NTD/Y nanocomposite, which were synthesized in situ (the addition of zeolite Y to the reaction mixture in the course of the synthesis of NTD by the sulfate method), were studied by a variety of methods. The decrease in the particle size (scanning electron microscopy) and the water content in pores (X-ray powder diffraction study, the full-profile Rietveld method, IR spectroscopy, differential scanning calorimetry), the increase in OH groups content and the decrease in the water content on the surface of zeolite (X-ray photoelectron spectroscopy) in the composition of NTD/Y compared to the initial zeolite Y were all established. A larger specific surface area of NTD/Y (Brunauer-Emmet-Teller method) compared to the initial zeolite Y is due to the fact that zeolite Y in the nanocomposite contains a smaller amount of water because of the synthesis conditions and the presence of nanocrystalline NTD on the surface of zeolite particles. It was found that NTD/Y nanocomposite exhibits a higher photocatalytic activity in the model decomposition reaction of methyl orange under UV and adsorption capacity for the extraction of P(V) and As(V) ions from aqueous media compared to the initial zeolite and pure NTD obtained under the same conditions, which differs from NTD/Y by the larger particle size, the smaller specific surface and the smaller content of OH groups and water on the surface. The role of Bronsted and Lewis centers in the realization of properties is discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Changing the characteristics and properties of zeolite Y and nano-anatase in the formation of a nano-anatase/Y composite with improved photocatalytic and adsorption properties

et al. 2018

View full text Add to dashboard Cite

show abstract

“…These groups are self-generated upon contact with electrolytes on semiconductors with a large bandgap (ΔЕ = 3.1-3.4 eV for nano-scaled titanium dioxide), resulting in high adsorbing capacity of the surface of titanium dioxide nanoparticles [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Nanocomposites based on silicon dioxide of different nature with functional titanium dioxide nanoparticles

Obolenskaya¹,

Gaynanova²,

Kravchenko³

et al. 2016

Nanotechnol Russia

View full text Add to dashboard Cite

Nanocomposites TiO 2 /SiO 2 with photocatalytic and adsorptive properties were prepared by codispersing of η-modification and anatase (commercial Hombifine N) and SiO 2 (opal, granules, ultrafine) in ethanol (or ethanol-water mixture in the presence of chlorophylls or porphyrins) with ultrasonic treatments of the mixture (method 1) and an aqueous solution of KOH with a microwave treatment (method 2), as well as the introduction of SiO 2 in the reaction mixture during the synthesis of TiO 2 by brief hydrolysis of sulfate titanyl (method 3). It was found that the state of titania in the sample (X-ray amorphous or nanocrystalline) and its deposition on SiO 2 nanocomposites depend on the method and the conditions of obtaining. It was established that the photocatalytic activity of nanocomposite TiO 2 /SiO 2 (granules) (method 1) photosensitized by coproporphyrin I in the visible range and the photocatalytic activity of nanocomposite TiO 2 /SiO 2 (opal) (method 3) in the near UV range exceed activity of the commercial sample of TiSiO 4 by more than 20-fold and ~7-fold, respectively. It was shown that the nanocomposite TiO 2 /SiO 2 (opal) significantly reduces the concentration of cations (in particular, Be, Ni, Bi) in the model water systems.

show abstract

Nanocomposites of zeolite–titanium(IV) oxides: Preparation, characterization, adsorption, photocatalytic and bactericidal properties

Domoroshchina

Kravchenko

Кузьмичева

2017

Journal of Crystal Growth

View full text Add to dashboard Cite

Synthesis, characterization and adsorption behavior of Mo(VI) and W(VI) ions on titanium dioxide nanoparticles containing anatase modification

Cited by 4 publications

References 11 publications

Changing the characteristics and properties of zeolite Y and nano-anatase in the formation of a nano-anatase/Y composite with improved photocatalytic and adsorption properties

Changing the characteristics and properties of zeolite Y and nano-anatase in the formation of a nano-anatase/Y composite with improved photocatalytic and adsorption properties

Nanocomposites based on silicon dioxide of different nature with functional titanium dioxide nanoparticles

Nanocomposites of zeolite–titanium(IV) oxides: Preparation, characterization, adsorption, photocatalytic and bactericidal properties

Contact Info

Product

Resources

About