Results 31 to 40 of about 2,931 (212)

Synthesis and properties of ZnO nanorods by modified Pechini process [PDF]

Applied Nanoscience, 2012
Zinc oxide (ZnO) nanorods have been successfully synthesized by modified Pechini process. The as-synthesized ZnO nanorods were characterized by X-ray diffraction, scanning electron microscope, Raman spectrum, ultraviolet–visible (UV–vis) spectrum. X-ray diffraction result shows that the ZnO nanorods are oriented in wurtzite phase.
Devaraj, Ramasamy, Karthikeyan, Krishnamoorthy, Jeyasubramanian, Kadarkaraithangam   +2 more
openaire   +1 more source

Obtención y caracterización de recubrimientos de TiO2 por el método de complejo polimerizable (PECHINI)

, 2015
Películas de titania, sobre sustratos de vidrio, fueron preparadas por el método de complejo polimerizable “Pechini” en medio ácido, pH=3. El método llevó a preparar una resina polimérica como producto de la reacción del ácido cítrico y el etilenglicol ...
Bautista-Ruíz, Jorge H., Franco, Yeimi M., Ortiz, Cesar, Rodríguez-Paez, Jorge E.   +3 more
core   +1 more source

Influencia de parámetros de síntesis sobre las características de los polvos cerámicos nanométricos del compuesto Sr_xBa_1-xNb₂O₆ (SBN)

Boletín de la Sociedad Española de Cerámica y Vidrio, 2013
Results on the synthesis process of nanometric ceramic powders of the SrxBa1-xNb2O6 compound (SBN) for two values of x (0.33 and 0.50), and two synthesis methods (Pechini and controlled coprecipitation) are presented.
Gaona J, S. , Muñoz, J. R., Raigoza, C.F.V. , Ramirez S., A. , Caneiro, A.   +4 more
doaj   +1 more source

Photocatalytic activity of visible light active Sr-hexaferrite prepared by solid-state reaction and the pechini methods

Materials Research Express, 2023
In this work, strontium hexaferrite (SrFe _12 O _19 ) was prepared using two different methods, the solid-state reaction and the sol–gel pechini methods.
M F Ramírez Ayala, A M Herrera-González, T J Pérez-Juache, V E Salazar-Muñoz, D Espericueta, J G Cabal-Velarde, J H García-Gallegos, A Lobo-Guerrero   +7 more
doaj   +1 more source

Síntese e caracterização de espinélios à base de ferritas com gelatina como agente direcionador Synthesis and characterization of ferrite-base spinels with gelatin as directing agent

Cerâmica, 2011
As ferritas com estrutura tipo espinélio compreendem um grupo de materiais magnéticos muito bem estabelecidos. Contudo, melhoramentos e inovações continuam acontecendo visando novas aplicações e otimização das técnicas de preparação.
A. F. Costa, P. M. Pimentel, D. M. A. Melo, M. A. F. Melo, F. M. Aquino   +4 more
doaj   +1 more source

Using the design experiment RSM for the preparation of nanoparticles containing pyrazinamide, ethambutol and rifampin [PDF]

شیمی کاربردی روز, 2018
In this study, three-component nanoparticles of iron, nickel and lithium were synthesized with two methods of combined technique (co-precipitation, hydrothermal) and pechini sol-gel.
Fariba Tadayon, reza jamshidi, parisa Jamshidpoor   +2 more
doaj   +1 more source

Bridging Boltzmann and Non‐Boltzmann Optical Thermometry Enabled by Multimodal Perovskite Nanocrystals

Advanced Optical Materials, EarlyView.
Multimodal perovskite nanocrystals enable optical thermometry across multiple excitation and emission regimes, spanning the UV–Vis–NIR spectral range. By combining upconversion, downshifting, and persistent luminescence, the platform bridges conventional Boltzmann and non‐Boltzmann thermometric approaches.
Adrian Drozdowski, Kevin Soler‐Carracedo, Tomasz Grzyb   +2 more
wiley   +1 more source

Rheological properties of gels for Pechini syntheses

, 2009
This work deals with preparation of layers of ceramic materials – perovskites. The introductory part includes general characteristics concerning structure, properties and use of this materials.
Wirthová, Michaela
core   +2 more sources

Carbon Coking‐Tolerant Perovskite Catalyst Nd0.9Mg0.1Fe0.4Ni0.6O3 for Efficient Methane Dry Reforming

Carbon and Hydrogen, EarlyView.
A new perovskite‐type catalyst Nd0.9Mg0.1Fe0.4Ni0.6O3 was developed for methane dry reforming, which exhibited 93.1% CH4 and 94.7% CO2 conversion with 100 h stability run and excellent anti‐coking capability, benefited from in situ exsolved Fe‐Ni alloy nanoparticles. ABSTRACT Perovskite with high temperature stability and tunability is a very promising
Zhenjie Wang, Xingchao Dai, Xinjiang Cui
wiley   +1 more source

Influência do tipo de solvente na síntese de mulita pelo método Pechini

Cerâmica
Resumo Mulita é um aluminossilicato com grande importância na tecnologia cerâmica. Sua síntese através de métodos químicos tem sido extensivamente estudada, no entanto, não se observam estudos da sua obtenção pelo método Pechini.
A. N. S. Braga, V. N. Simões, H. L. Lira, G. A. Neves, R. R. Menezes   +4 more
doaj   +1 more source