Papers by Keyword: Nanozirconia

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Authors: Ping Hua Chen, Xue Zhen Zhou, Yong Xiu Li, Dong Ping Li, Jing Li, Yan Zhu Liu
Abstract: In present study, uniformed nanozirconia is obtained via precipitation, ball milling and spray drying. The characteristics of methylene blue adsorption by nanozirconia are studied in details. The morphology of nanozirconia is examined by SEM. The influence of temperature is studied to obtain the optimal adsorption conditions. The equilibrium adsorption isotherms and the kinetic properties of the adsorption process are investigated to study the mechanism. The thermodynamic properties of methylene blue adsorption is investigated, and the thermodynamic parameters of Gθ, Hθ and Sθ are calculated. The results show nanozirconia has high adsorption ability of 43.99 mg/g to methylene blue, and the adsorption reaction is a spontaneous and physic-sorption process.
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Authors: Nere Garmendia, Leire Bilbao, Roberto Muñoz, L. Goikoetxea, Ainara García, Izaskun Bustero, Beatriz Olalde, Nerea Garagorri, Isabel Obieta
Abstract: Carbon nanotubes could avoid the crack propagation and enhance the toughness of the ceramic material used for prostheses applications. So nanozirconia partially coated carbon nanotubes have been obtained via hydrothermal synthesis of zirconia nanoparticles in presence of multiwall carbon nanotubes. The as covered nanotubes should have a better wettability in the ceramic matrix and improve the dispersion of the CNTs in the nanocomposite, which results in a new ceramic biomaterial with a longer lifetime and better reliability. The obtained product has been structurally characterized by several techniques such as FTIR, XRD, SEM, AFM, EELS, XPS and TGA. The citotoxicity of the sintered product was studied by the change in the pH and ICP-AES in in-vitro biocompatibility tests.
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Authors: Jin Ping Yang, Jing Wang, Heng Yong Wei
Abstract: The glass frits were prepared via high temperature melting and water quenching method and nano zirconia powders were synthesized via coprecipitation method. XRD and SEM were utilized to analyze the phase composition and microstructures. The results revealed that when the additive amount of frits was 5%, the samples sintered at 1400 °C for 1 h had homogeneous microstructure.
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