Nanoparticles can catalyze many important chemical transformations in organic synthesis, pollutant removal, and energy production. Characterizing their catalytic properties is essential for understanding the fundamental principles governing their activities, but is challenging in ensemble measurements due to their intrinsic heterogeneity from their structural dispersions, heterogeneous surface ...

pure and zno-doped ni0.1co0.9fe2o4 catalyst were prepared by co-precipitation method and thermal decomposition in air calcinated at 400-700°c and that treated with different amounts of zinc nitrate (0.46-2.25 w% zno). x-ray powder diffractometry, scanning electron microscopy (sem) and bet analysis of nitrogen adsorption isotherms investigated the crystalline bulk structure and the surface area ...

the antimicrobial effect of metal nanoparticles such as zinc oxide and silver nanoparticles has been taken into great consideration separately during recent years. the useful application of these nanoparticles in the areas of medicine, biotechnology, and professional prevention of microbes motivated us. the aim of this study was to evaluate antibacterial activity properties of silver doped zinc...

conclusions: the results showed that silver nanoparticles have an antimicrobial effect against intramacrophage b. abortus 544. results: the well diffusion agar study showed that silver nanoparticles have an antimicrobial effect on b. abortus 544. the mic and mbc of silver nanoparticles against b. abortus 544 were; 6 ppm and 8 ppm, respectively. the silver nanoparticles showed antibacterial effe...

Enzyme engineering via immobilization techniques is a suitable approach for improving enzyme function and stability and is superior to the other chemical or biological methods. In this study chitosan nanoparticles were synthesized using the Ionic Gelation method and were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Transmission Electron...

introduction: lactate dehydrogenase is one of the cardiac enzyme markers, studied in vivo. in the present study, activity and kinetic properties of enzyme extracted from cardiomycytes derived from mouse embyronic stem cell in vitro were compared with enzyme extracted mouse neonatal from cardiomyocytes in vivo. material and methods: mouse embryonic stem cells were cultured and differentiated and...

Rhodamine B (RB) is a toxic dye used extensively in textile industry, which must be remediated before its drainage to environment. In the present study, supported gold nanoparticles on commercially available titania and zincite were successfully prepared and then their activity on the photodegradation of RB under UV A light irradiation were evaluated. The synthesized photocatalysts were charact...

This work presents the synthesis and use of surface-modified iron oxide nanoparticles for the covalent immobilization of Bacillus licheniformis γ-glutamyl transpeptidase (BlGGT). Magnetic nanoparticles were prepared by an alkaline solution of divalent and trivalent iron ions, and they were subsequently treated with 3-aminopropyltriethoxysilane (APES) to obtain the aminosilane-coated nanoparticl...