a series of cuo-zno-al2o3 nanoparticles over hzsm-5 were successfully prepared using different methods of batch co-precipitation, semibatch co-precipitation and combined co-precipitation-ultrasound. nitrates of copper, zinc and aluminum were used as precursors, while na-zsm-5 was employed as composite support and sodium carbonate was used as precipitant agent. the effects of preparation methods...

Background and Objectives: Antimicrobial active packaging with metallic nanoparticles is used as antimicrobial agent in the packaging of food. This study considers the coliform retarding ability of antimicrobial packaging in ultra-filtrated (UF) cheese. Materials and Methods: Plastic films based on low-density polyethylene containing organoclay (cloisite 30B) and different percentages of Ag an...

The solution casting method was utilized to synthesize nanocomposite films of chitosan (Cs)/CuO, Cs/graphene oxide (GO), carboxymethyl cellulose (CMC)/TiO2, CMC/GO, sodium alginate (Na-Alg)/TiO2, and Na-Alg/GO owing their various applications. influence CuO, TiO2 GO concentration on the optical properties Cs, CMC Na-Alg studied by UV-Vis Spectroscopy. absorbance increased with increasing filler...

In this work different variables that can affect the catalytic behavior of CuO-CeO2 supported on mesoporous silica (SBA-15 and SBA-16) were studied. The influence COPrOx activity relative concentration CuO CeO2 active phase impregnation methods in support was analyzed. physicochemical characterization performed EDS-SEM TEM-STEM, N2 isotherms, X-ray Diffraction (XRD) Photoelectron Spectroscopy (...

CuO/ZnO nanocomposites were greenly prepared and tested for the catalytic degradation of methyl orange. The XRD analysis confirmed existence CuO ZnO with crystallite sizes within range 15–30 nm. TEM SEM images showed different morphological properties. TGA revealed a good thermal stability nanocomposite, total loss less than 18% at temperature 700 °C. orange under mild conditions catalyst mass/...

The photoactive features of the least common polymorph TiO2, i.e. brookite, were combined with thermocatalytic redox ones cerium oxide, focusing on effects addition small amounts Co-Cu oxides for solar CO2 conversion. By considering characterization data, a surface segregation hosted metal TiO2-CeO2 composite was evidenced, and their presence increased amount oxygen vacancies improved charge ca...

This study investigated the photo-degradation of methyl orange (MO) as a type of azo dye using a CuO/α-Fe2O3 nanocomposite. A CuO/α-Fe2O3 powder with a crystalline size in the range of 27-49 nm was successfully prepared using simple co-precipitation along with a sonication method. The characterization of the synthesized sample was done via XRD, FE-SEM, EDS, FTIR and DRS analyses. The Tauc equat...