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In this abstract, a significantly efficient modification method for Sm2Ti2S2O5 was introduced by employing both reduction and oxidation cocatalysts to improve the H2 activity from water. The modified photocatalyst Sm2Ti2S2O5 is loaded with Ag2S and Rh.The preparation of Ag2S/Sm2Ti2S2O5 involves a one-pot synthesis of by sulfurizing a mixed oxide consisting of Ag, Sm, and Ti, followed by deposition...
Due to the potential environmental applications, photocatalytic reactions occurring on the surface of photoirradiated titanium (IV) oxide (TiO2) have garnered a wide interest. Despite displaying high photocatalytic activity, the utilization of TiO2 is limited by its lack of selectivity. This paper presents the synthesis of platinized TiO2 core and hollow silica shell (SiO2/void/Pt-TiO2), with the...
In the present work, the photochemical oxidation of phenol and chlorophenol aqueous solutions in a batch recycle photochemical reactor using ultraviolet irradiation, hydrogen peroxide and TiO2 (as photocatalyst) was studied. The study showed that the combined treatment process was the most effective process under acidic conditions and showed a higher rate of degradation of phenol and chlorophenol...
The functionalized gold nanoparticles capped with polyoxometalates were prepared by a simple photoreduction technique in the presence of phosphododecamolybdate (PMo12) to serve as reducing reagents, photocatalysts, and stabilizers. Monolayer and multilayer structures of the negatively charged PMo12-capped gold nanoparticles (PMo12-NGs) were constructed on a polyvinylpyridine-derivatized indium-doped...
This work was conducted to study the changing characteristics of the oxidation-reduction potentials (ORP) during the processes of the biological decolorization of azo dyes, knowledge of which would be useful for prediction of the decolorization capacity of oxidative and reductive biocatalysts. Reduction of these azo dyes did not occur under aeration conditions, and azo dyes were reduced by microorganisms...
CuO/gamma-Al2O3 granular catalysts were synthesized by the sol-gel method. Performance of the CuO/gamma-Al2O3 catalysts for the selective catalytic reduction (SCR) was explored in a fixed bed adsorption system. The optimum temperature ranges for SCR of NO over the fresh CuO/gamma-Al2O3 catalyst are 250~450degC. The maximum activity maintains near to 99% at 350degC. The operating temperature range...
Carbon nanotubes currently attract intense attention for various biomedical applications due to their large surface areas, high electrical conductivity, and excellent strength. However, these attractive properties of nanomaterials are also the main factors for their potential toxicity. The present study was undertaken to determine the toxicity exhibited by multi- walled carbon nanotubes (MWCNT) in...
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