Photocatalytic Properties of Mechanochemically Synthesized Nanocrystalline ZnAl_2O_4 and CdSe

• Authors: N. Kostova , Al. Eliyas , M. Fabián , M. Achimovičová , P. Baláž
• Languages of publication: EN

Abstracts

EN

Nanocrystalline powders of ZnAl_2O_4 and CdSe were prepared via mechanochemical synthesis. Powder slurries were coated as thin films on SiO_2 thin layer chromatography (TLC) sheet by capillary method. The photocatalytic activity of the film coating was tested in a self-made gas-phase flat-plate continuous-flow photocatalytic reactor with toluene as model air contaminant. The tested nanocrystalline ZnAl_2O_4 turned out to be poor oxidation photocatalyst under UV irradiation. CdSe displays considerable photocatalytic activity under visible light, where TiO_2 is inactive. The nonconventional one-step mechanochemical route to ZnAl_2O_4 and CdSe synthesis offers several advantages compared to traditional processing routes, including low-temperature solid state reactions at ambient temperature, absence of organic templates contamination and low expenses.

Keywords

EN

81.20.-n; 61.05.cp; 61.46.-w; 61.66.Fn

Discipline

• 61.66.Fn: Inorganic compounds
• 81.20.-n: Methods of materials synthesis and materials processing(see also 61.72.U- Doping and impurity implantation; for crystal growth, see 81.10.-h; for film growth, deposition and epitaxy, see 81.15.-z)
• 61.05.cp: X-ray diffraction
• 61.46.-w: Structure of nanoscale materials(for thermal properties of nanocrystals and nanotubes, see 65.80.-g; for mechanical properties of nanoscale systems, see 62.25.-g; for electronic transport in nanoscale materials, see 73.63.-b; see also 62.23.-c Structural classes of nanoscale systems; 64.70.Nd Structural transitions in nanoscale materials; for magnetic properties of nanostructures, see 75.75.-c)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 4
• Pages: 967-970

Dates

published

2014-10

Contributors

author

N. Kostova

• Institute of Catalysis, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

author

Al. Eliyas

• Institute of Catalysis, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

author

M. Fabián

• Institute of Geotechnics, Slovak Academy of Sciences, Košice, Slovakia

author

M. Achimovičová

• Institute of Geotechnics, Slovak Academy of Sciences, Košice, Slovakia

author

P. Baláž

• Institute of Geotechnics, Slovak Academy of Sciences, Košice, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.126.967