Results 181 to 190 of about 5,086 (222)

ZnO nanoparticles with tunable bandgap obtained by modified Pechini method

Applied Physics A, 2019
Zinc oxide nanoparticles (N–ZnO) obtained by the Pechini method and calcined using a closed clay container are the focus of the present work. The synthetic route includes a modification in the calcination process (modified Pechini method), that is, without the change in the calcination process.
E. S. Rodrigues, M. S. Silva, W. M. Azevedo, S. S. Feitosa, A. Stingl, P. M. A. Farias   +5 more
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Preparation of Pt thin film electrodes using the Pechini method

Materials Letters, 2006
Abstract This paper presents the preparation and characterization of Pt electrodes obtained using the polymeric precursor method on Ti substrates. In the present case, this route leads to the formation of metallic platinum rather than the formation of platinum oxide.
R.G. Freitas, R.T.S. Oliveira, M.C. Santos, L.O.S. Bulhões, E.C. Pereira   +4 more
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Lithium ionic conductivity of Li7-3xFexLa3Zr2O12 ceramics by the Pechini method

Ionics, 2020
Li7La3Zr2O12 (LLZO) with garnet structure has been acknowledged as a promising solid electrolyte for the next generation Li-ion batteries owing to its high chemical stability against Li metal and relatively high Li-ion conductivity. In this work, Li7-3xFexLa3Zr2O12 ceramics were prepared by the Pechini method.
Zhenzhu Cao, Weiwei Wu, Yue Li, Jiajia Zhao, Weiyan He, Jinrong Liu, Hong Zhang, Guorong Li   +7 more
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Modified Pechini's method to prepare LaAlO 3 :RE thermoluminescent materials

Radiation Physics and Chemistry, 2017
Abstract This work presents an alternative method to prepare rare-earth doped lanthanum aluminates materials for thermoluminescent (TL) dosimetry applications. Modified Pechini´s method was using to prepare praseodymium doped LaAlO 3 powders. LaAlO 3 :Pr 3+ powders were prepared using La(NO 3 ) 3 ·6H 2 O, Al(NO 3 ) 3 ·6H 2 O, Pr(NO 3 ) 3 ·6H 2 O ...
T. Rivera-Montalvo, A. Morales-Hernandez, A.A. Barrera-Angeles, R. Alvarez-Romero, C. Falcony, J. Zarate-Medina   +5 more
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Synthesis and characterization of nanocrystalline Yb:Lu2O3 by modified Pechini method

Materials Science and Engineering: B, 2008
Abstract Cubic nanocrystalline Yb:Lu 2 O 3 in the size range of 50–100 nm were synthesized by modified Pechini sol–gel method. Differential thermal analysis and thermogravimetric analysis (DTA–TG) were used to study the thermal evolution of the precursor powder. Moreover, together with the results of X-ray powder diffraction (XRD) indicated that the
M. Galceran, M.C. Pujol, M. Aguiló, F. Díaz   +3 more
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Chemical Synthesis by Pechini Method for Obtation of ZnO Varistors

Materials Science Forum, 2005
The zinc oxide varistors are ceramic semiconductor devices doped with some metallic oxides such as: bismuth, nickel, manganese, cobalt, and others. The aim of this work is to characterize the varistors, obtained by the Pechini’s method, regarding their microstructure and electrical features.
P.C. Ribeiro, E.G. da Costa, L. Gama, Ana Cristina F.M. Costa, Ruth H.G.A. Kiminami   +4 more
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Synthesis and luminescent properties of YGG:Tb phosphors by Pechini method

Journal of Luminescence, 2007
Abstract A novel green phosphor Y 3 Ga 5 O 12 :Tb (YGG) was successfully synthesized by Pechini method. The differential scanning calorimetric (TG-DSC) analysis and X-ray powder diffraction were used to determine the crystallization temperature and the pure phase phosphors were obtained by calcining the gel at 800 °C.
Nanfei Zhu, Yongxiang Li, Xiaofeng Yu, Wanyin Ge   +3 more
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Structural Characterization of Li-MN Doped Powders Prepared by Pechini's Method

Key Engineering Materials, 2001
Pechini's method has been successfully used to prepare Li-doped MgNb2O6(MN) at short time and low temperature. It consists in the preparation of metal citrate solution, which is polymerized at 250°C to form a high viscous resin. This resin was burned in a box type furnace at 400°C/2h and ground in a mortar.
Cavalheiro, A. A., Zaghete, M. A., Paiva-Santos, C. O., Silva Giotto, M. T., Cilense, M., Varela, José Arana, Mascarenhas, Y. P.   +6 more
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XAFS characterization of La1−xSrxMnO3±δ catalysts prepared by Pechini’s method

Chemical Physics, 2006
Abstract XAFS experiments at the Mn and Sr K-edges were carried out in order to investigate the short-range arrangement of Mn and Sr sites on La1−xSrxMnO3±δ highly doped perovskites (x = 0, 0.2, 0.4 and 0.6). The Mn K-edge EXAFS spectra show a static Jahn–Teller distortion of the MnO6 for x = 0 and 0.2, which is drastically reduced as x increases ...
Melo, Dulce Maria de Araújo, Borges, Filipe Martel de Magalhães, Ambrósio, Renato Canha, Pimentel, Patricia Mendonça, Silva Júnior, Carlos Neco da, Melo, Marcus Antônio de Freitas   +5 more
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Reaction Mechanism of LiNiO2 Synthesized in Oxygen Atmosphere by Pechini Method.

Journal of the Ceramic Society of Japan, 2002
Pechini process was known as an excellent method for the synthesis of LiNiO2 powder. Compared with the result of solid state reaction using NiO and Li2CO3 as reactants, Ni2O3 was the new compound found in Pechini-processed powder. In the present work, the role of Ni2O3 and the reaction mechanism for the synthesis of Pechini-processed LiNiO2 were ...
Shih-Pin LIN, Kuan-Zong FUNG, Yi-Ming HON, Min-Hsiung HON   +3 more
openaire   +1 more source