27.04.2017 02:39
Pure titanium and cerium oxides and their composites were prepared by the modified method of homogeneous hydrolysis with urea as the precipitating agent. The as-synthesized nanostructured oxides were examined by XRD, XPS, microscopic techniques (SEM, HRTEM), nitrogen...
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27.04.2017 02:33
Here we report a novel method of intercalation of a quaternary ammonium salt bearing a polymerizable group in between graphite galleries. By the exfoliation of the intercalate during its subsequent polymerization with n-butyl methacrylate, a polymer membrane with homogenously dispersed graphene...
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27.04.2017 02:24
Two series TiO2-CeO2 samples were synthesized using homogeneous precipitation with urea and template-assisted hydrothermal procedures. The samples were characterized by nitrogen physisorption, XRD, UV-Vis, Raman and TPR techniques. The catalytic properties of the obtained materials were studied in...
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27.04.2017 02:17
Four different synthetic routes were used to prepare active forms of cerium oxide that are capable of destroying toxic organophosphates: a sol-gel process (via a citrate precursor), homogeneous hydrolysis and a precipitation/calcination procedure (via carbonate and oxalate precursors). The samples...
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27.04.2017 02:09
Multicomponent iron-titanium-hafnium oxide materials with different compositions were prepared by combination of homogeneous precipitation with urea and incipient wetness impregnation techniques and tested as catalysts for ethyl acetate oxidation as representative VOCs. Nitrogen physisorption, XRD,...
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27.04.2017 02:02
Iron-titanium binary oxides were synthesized by template-assisted hydrothermal method. The effect of the variation in the Fe/Ti ratio and the temperature of hydrothermal treatment on the phase composition, structural, textural and redox characteristics of thus obtained materials was studied by...
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27.04.2017 01:44
Manganese(IV) oxide used for degradation of toxic organophosphorus compounds was prepared by homogeneous hydrolysis of potassium permanganate (KMnO4) with 2-chloroacetamide. The prepared sample was characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission...
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27.04.2017 01:36
New composite nanomaterials of cellulose, chitin, and chitosan modified with titanium or nickel nanoparticles were developed and tested for removal of Cs-137, Sr-85, Co-60, and Eu152+154 from aqueous solutions. The composite nanomaterials were characterized by X-ray diffraction, high-resolution...
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07.12.2016 11:56
Abstract
Direct titration with NaOH was used to quantify the acidic functional group content in graphene oxide (Go). Three different methods were used to evaluate the experimental data: the first derivation of the titration curve, Gran linearization and an empirical approach suggested by...
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07.12.2016 11:32
Abstract
The aim of the current investigation is to follow the formation of iron phase in mesoporous nanocrystalline titania and Hf-doped titania powders and its influence on the physicochemical and catalytic properties of the obtained materials. The parent host matrices were synthesized by...
