Results 111 to 120 of about 6,175 (227)

Morphology and luminescence of nanocrystalline Nb₂O₅ doped with Eu³⁺ [PDF]

, 2007
The synthesis of nanocrystalline Nb2O5:Eu3+ has been achieved by using a Pechini procedure. The obtained materials are single-phase niobia with the orthorhombic structure, average crystallite size around 25nm and average lattice strain of about 0.002 ...
Bettinelli, Marco, Cannas, Carla, Enzo, Stefano, Falcomer, Daniele, Ibba, Giulio, Musinu, Anna Maria, Speghini, Adolfo   +6 more
core  

AVALIAÇÃO ESTRUTURAL E MORFOLÓGICA DA HIDROXIAPATITA SINTETIZADA POR PECHINI/STRUCTURAL AND MORPHOLOGICAL EVALUATION OF HYDROXYAPATITE SYNTHESIZED BY PECHINI

Brazilian Journal of Development, 2020
Geysivana Késsya Garcia Carvalho, Ycaro Breno Alves de Almeida, Ketelly Estefane da Silva Alves, José Rosa de Souza Farias, Veruska do Nascimento Simões, Aluska do Nascimento Simões Braga   +5 more
openaire   +2 more sources

Métodos químicos para obtener varistores basados en SnO₂

Boletín de la Sociedad Española de Cerámica y Vidrio, 2006
Synthesis of SnO2 ceramic powders was made by coprecipitation method and polymeric precursor method (Pechini) to obtain Sn-Co-Nb-Ti-Al varistor systems.
Rodríguez-Páez, J. E., Varela, J. A., Mosquera, A.   +2 more
doaj  

Synthesis and Electrochemical Performance of High‐Entropy Spinel‐Type Oxides Derived from Multimetallic Polymeric Precursors

Advanced Energy & Sustainability Research
High‐entropy spinel‐type oxides are synthesized by a modified Pechini process, wet chemistry approach, and solid‐state synthesis method and characterized as anode materials for Li‐ion batteries.
Haotian Yang, Ge Chen, Jiaqi Ni, Sebastian Praetz, Delf Kober, Gabriel Cuello, Emiliano Dal Molin, Albert Gili, Christopher Schlesiger, Maged F. Bekheet, Dorian A. H. Hanaor, Aleksander Gurlo   +11 more
doaj   +1 more source

Preparação de membranas de quitosana/poli (vinil álcool) / poli (β- hidroxibutirato) e aditivos para aplicação na engenharia de tecidos [PDF]

, 2009
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.Uma alternativa viável para reparar a estrutura biológica de um de órgão ou tecido é a reposição deste com um implante preparado a partir
Cesconeto, Francielly Roussenq
core  

Síntesis y evaluación de la actividad fotocatalítica del Na2TiO3 dopado con Nd para su utilización en la región del espectro visible [PDF]

, 2016
En este trabajo se llevó a cabo la síntesis a través del método de Pechini de sólidos semiconductores tipo perovskita de la forma Na2-xNdxTiO3+Z dopados con diferentes fracciones de neodimio.
Casadiego Díaz, Oscar Felipe
core  

Experimental study of the main component of a technology for its use in space propulsion at cryogenic conditions [PDF]

, 2017
As the aerospace technology progresses, new challenges emerge which have to be managed and solved to make future space exploration missions possible.
Gallego Chacón, Guillermo
core  

Estudio de PMN cerámico dopado con KNbO₃ y LiNbO₃ sintetizado por Pechini

Boletín de la Sociedad Española de Cerámica y Vidrio, 2002
PMN belongs to a special class of materials named relaxor ferroelectrics. It has high volumetric efficiency due to its high dielectric constant, which makes it in a perfect material for application in multilayer capacitors.
Cilense, M., Paiva-Santos, C. O., Zaghete, M. A., Cavalheiro, A. A., Varela, J. A.   +4 more
doaj  

Synthesis of LiMn2O4 and LiCr0.2Mn1.8O4 powders by modified Pechini process

Semina: Ciências Exatas e Tecnológicas, 2009
LiMn2O4 and LiCr0.2Mn1.8O4 powders were synthesized by Pechini process, modified in order to reduce the number of steps and to work at temperatures below or equal to 400oC. Both phases crystallize in the same spinel structure with lattice constants of 8.
Alexandre Urbano, Jair Scarmínio, Antonio Alberto da Silva Alfaya, Reni Ventura da Silva Alfaya, Bernard Joseph Louis Gardes   +4 more
doaj  

Modified Pechini-derived Na₃V₂(PO₄)₃/C with superior low-temperature performance for sodium-ion batteries. [PDF]

RSC Adv
Mukushev I, Issatayev N, Mukanova A, Jakupova Z, Bakenov Z, Sung-Soo K, Nurpeissova A.   +6 more
europepmc   +1 more source