Results 161 to 170 of about 33,146,546 (216)

Optical studies of Y3(Al,Ga)5O12:Ce3+,Cr3+,Nd3+ nano-phosphors obtained by the Pechini method

Journal of Rare Earths, 2019
The Y3(Al,Ga)5O12:Ce3+,Cr3+,Nd3+ (YAGG) nano-phosphors with homogeneous particle-size distribution, low aggregation and average crystalline size of about 65 nm were obtained using a modified Pechini method.
Zhengfa Dai, V. Boiko, Marta Markowska, A. Gerus, K. Grzeszkiewicz, J. Hölsä, M. Saladino, D. Hreniak   +7 more
semanticscholar   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Effective ternary copper-cerium-cobalt catalysts synthesized via a modified pechini method for selective oxidation of ethylbenzene

Materials Chemistry and Physics, 2018
A series of ternary Cu-Ce-Co catalysts were synthesized via a modified pechini method, in which the metal complexes annealed at 650 °C under nitrogen atmosphere and then heated at air.
Shanshan Jie, Xiu Lin, Z. Chao, Zhigang Liu   +3 more
semanticscholar   +1 more source

Nanosilica synthesized by the Pechini method for potential application as a catalytic support

Ceramics International, 2014
Abstract The purpose of this work was to synthesize and characterize silicon oxide (SiO2) using TEOS as the source of silica to obtain a nano-ceramic material with potential for application as a catalytic support. The material, which was prepared by the Pechini method, was calcined at temperatures of 600, 700, 800 and 900 °C for 1 h.
P.C. Ribeiro, R.H.G.A. Kiminami, A.C.F.M. Costa   +2 more
openaire   +1 more source

Mass production of nitrogen and oxygen codoped carbon nanotubes by a delicately-designed Pechini method for supercapacitors and electrocatalysis.

Nanoscale, 2019
Heteroatom-doped carbon nanotubes (CNTs) have great potential in various fields owing to their extraordinary electronic, structural, and mechanical properties.
Shuai Qi, Dong Wang, Weijiang Li, Rui Zhang, Feng Liu, Junting Zhang, Zhiyuan Liu, Yan Guo, Fagang Wang, G. Wen   +9 more
semanticscholar   +1 more source

Ethanothermal reduction to MoO2 microspheres via modified Pechini method

Journal of Crystal Growth, 2006
Abstract The Pechini process was modified to provide an ethanothermal reduction route to molybdenum dioxide microspheres at ambient temperature. The effects of citric acid (CA), ethylene glycol (EG), and H2SO4 environment on the formation of molybdenum oxide (MoO2) were studied.
Shutao Wang, Changhua An, Yange Zhang, Zude Zhang, Yitai Qian   +4 more
openaire   +1 more source

Preparation of CuO/CeO2 composites by the Pechini method and investigation of their structural and electrical properties

Ceramics International, 2019
In this study, unary CuO and CuO/CeO2 composites with various contents of CeO2 were synthesized by the Pechini process. Transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction were used ...
M. Zarei, M. B. Zarandi, M. Alizadeh
semanticscholar   +1 more source

Study of the Optical and Dielectric Properties of TiO₂ Nanocrystals Prepared by the Pechini Method

Journal of Nanoscience and Nanotechnology, 2012
Titanium oxide nanocrystals synthesized by the Pechini method were calcinated at temperatures between 300 and 1000 degrees C. The crystalline structure was analysed by X-ray diffraction, scanning electron microscopy (SEM) and Raman spectroscopy. A phase transition from the anatase to rutile crystalline phase was found to occur at temperatures near 500 ...
Graça, M. P. F., Nico, C., Peres, M., Valente, M. A., Monteiro, T.   +4 more
openaire   +3 more sources

TiO₂ Synthesis by the Pechini’s Method and Application for Diclofenac Photodegradation^†

Photochemistry and Photobiology, 2020
AbstractIn this work, the effect of the calcination temperature on the TiO2 synthesis using Pechini’s method was reported. The adopted calcination temperatures were 500, 600, and 700°C. XRD measurements indicated the composition of crystalline phases, and from there, the conversion of the anatase phase to rutile.
Danilo R. Souza, João Vitor S. Neves, Yago K.S. França, Wellington C. Malheiro   +3 more
openaire   +2 more sources