recently, the al2o3–tio2–zro2 system has found valuable applications, particularly, as a support for nox storage–reduction (nsr) catalysts. nanocomposite powders were prepared from the co-precipitation method in inorganic precursors. the behaviors of mixed oxide nanoparticles under ultrasonic irradiation, such as dispersion, and crushing were studied. phase transformations, crystallite size, an...

The growing demand of energy needs the search for alternative sources different to fossil fuels. use biomass as source is one most studied, because there are high value products that can be produced from biomass. One these ?-valerolactone, obtained furfural, which a derived product. To transform furfural into ?-valerolactone necessary bifunctional catalyst and hydrogen source. In this work, was...

Ultrathin (∼3 Å) zirconium oxide films were grown on a single-crystalline Pt3Zr(0001) substrate by oxidation in 1 × 10-7 mbar of O2 at 673 K, followed by annealing at temperatures up to 1023 K. The ZrO2 films are intended to serve as model supports for reforming catalysts and fuel cell anodes. The atomic and electronic structure and composition of the ZrO2 films were determined by synchrotron-b...

Objective: Periodontal disease is an essential phenomenon in human health. Oral pathogens can cause severe break which may show the way to serious issues like chronic obstructive pulmonary and cardiovascular diseases. Therefore, aim of this study evaluate antibacterial effect a series nanoparticles on oral pathogens.Methods: In study, activity such as MWCNT, CuO2, CaCO3, SiO2, Al2O3, MgO ZrO2 a...

This clinical report describes a treatment for the replacement of a missing mandibular anterior tooth using a cantilever single-retainer resin-bonded fixed partial denture (RBFPD), fabricated from zirconium dioxide (ZrO2) ceramic. No clinical complications were observed at the 2-year 6-month follow-up examination after placement of the ZrO2 ceramic RBFPD, and satisfactory functional and estheti...

The green synthesis of metal oxide nanoparticles is an efficient, simple, and chemical-free method producing nanoparticles. present work reports the Murraya koenigii-mediated ZrO2 (ZrO2 NPs) their applications as a photocatalyst antibacterial agent. Capping stabilization were achieved by using koenigii leaf extract. optical, structural, morphological valance NPs characterized UV-DRS, FTIR, XRD,...

A facile sol–gel coating procedure has been successfully applied for the ZrO2 coating of eggshell membranes (ESM), resulting in hierarchically ordered thin films with a macroporous network structure comprising crystalline ZrO2 tubes. This hierarchical material, which was obtained through sol–gel mineralization of the ESM template and subsequent calcination at 600 uC, was characterized by XRD, S...

This paper reports the synthesis of CeO2/ZrO2 nanocomposite by wet chemical method using cationic surfactant (CTAB). The properties of the obtained nanocomposites were analysed by X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscoy (SEM), transmission electron microscopy (TEM), UV-Diffuse Reflectance Spectroscopy (UV-DRS) and photoluminescence (PL) spectrosco...

Abstract In this project, nano-ZrO2 particles were dispersed in aluminum powder by a Y-shape mixer. The particle size of ZrO2 powder was < 40 nm and the amount of ZrO2 reinforcement varies from 3 to 15%.The mixed powders were compacted .Subsequently the compacted discs were sintered both in the microwave oven and in the conventional muffle furnace .Using microwave –assisted sintering method led...

Single-Atom Sites Catalysts In article number 2300673, Dongmok Whang, Sung Jong Yoo, Namgee Jung, Joseph T. Hupp, and co-workers present a strategy to enhance the efficiency durability of sub-nanometer catalysts for electrochemical reactions. The cover art depicts strong interaction between single-atom site Ru chemically stable ZrO2-x nanoparticles, enabling superior stability improved activity...