Results 71 to 80 of about 6,144 (227)

Síntesis y catálisis de las perovskitas MgTiO3 y CaTiO3 [PDF]

, 2017
Las Perovskitas son una especie de solidos cristalinos que catalizan reacciones de degradación en colorantes, en el siguiente artículo se expresa el proceso de obtención de dichas perovskitas( MgTiO3 Y CaTiO3,) por el método de Pechini con algunas ...
Benavides Benavides, Ana Milena, Chara Fory, Sindy Paola   +1 more
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Lead‐Free (K0.5Na0.5)NbO3 Unmodified Piezoceramics: A Reduction in the Energetic Budget of Solid State Synthesis and Sintering

Chemistry–Methods, Volume 5, Issue 12, November 2025.
The temperature of the solid‐state synthesis of pure (K0.5Na0.5)NbO3 piezo‐composition is reduced by using the niobium pentoxide reactant in the mixture of reagents after attrition milling for only 3h: a majoritarian (57 wt.% of the total Nb2O5 content) orthorhombic polymorph Pbam.
Maria Dore, José F. Bartolomé, Sonia Lopez‐Esteban, Marzia Mureddu, Costantino Cau, Stefano Enzo, Álvaro García, Sebastiano Garroni, Lorena Pardo   +8 more
wiley   +1 more source

Evaluación de la actividad fotocatalítica de los compuestos A2La2Ti3O10 (A= K, Na, H) a diferentes cargas de cocatalizador [PDF]

, 2016
En este artículo se presenta la evaluación de los compuestos A2La2Ti3O10 (A= K, Na y H) frente a la degradación del azul de metileno cuando dichos compuestos se impregnan con NiO, las impregnaciones se efectúan con 0.01%, 0.05% ,0.1% y 0.2% de carga de ...
Díaz Ocampo, Gerardo Obdulio, Osorio Vélez, Jefferson   +1 more
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Synthesis‐Driven Functionality in High‐Entropy Materials

Small, Volume 21, Issue 44, November 6, 2025.
This review explores how synthesis techniques shape the structure, morphology, and functional properties of high‐entropy materials for energy and electronic applications. By comparing diverse methods through nine key criteria and linking them to material performance, the work offers a practical framework to guide synthesis selection for targeted ...
Anurag Khandelwal, George Mathew, Subramshu Bhattacharya, Alexander Colsmann, Gabriel Cadilha Marques, Miriam Botros, Florian Strauss, Jiangyuan Xing, John Silvister Raju, Arivazhagan Ponnusamy, Jasmin Aghassi‐Hagmann, Torsten Brezesinski, Simon Schweidler, Ben Breitung   +13 more
wiley   +1 more source

Chemical Synthesis and Characterizations of SrSi2O2N2: Eu2+ Phosphors for White LEDs Applications [PDF]

, 2016
白光发光二极管(whitelight-emittingdiodes，WLEDs)具有寿命长、能耗低以及结构紧凑等优点，因此被广泛的关注。目前，基于蓝光LED的荧光粉转换WLEDs(phosphor-converted-WLEDs，PC-WLEDs)是市场的主流，该方案需要搭配荧光粉以产生白光。因此，荧光粉是PC-WLEDs的关键材料之一。 为了获得较高显色指数的PC-WLED，绿色荧光粉是必不可少的。SrSi2O2N2:Eu2+(SSON)是一种性能优异的绿色荧光粉，具有较高的量子效率，较宽的吸收带 ...
DHIA ABDULMUHSIN HASSAN AAL-MO
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Sonochemical activation for BaTiO3 synthesis: A rapid and efficient route to the tetragonal phase

International Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract Barium titanate is a highly promising ferroelectric material, but its synthesis is often based on lengthy and complex processes. This paper presents the development of an ultrafast synthesis route for producing high‐purity tetragonal BaTiO3. The method combines a brief sonochemical activation (15 min) with conventional calcination. Compared to
E. C. Silva, R. L. dos Santos, S. T. Monteiro, J. P. da Silva, Y. M. C. Pinto, L. Aguilera, F. X. Nobre, M. R. Morelli, A. P. Luz, Y. Leyet   +9 more
wiley   +1 more source

Structural and morphological characterization of rare earth modified lead titanate Caracterização estrutural e morfológica de titanatos de chumbo modificados por terras raras

Cerâmica, 2007
Rare earth modified lead titanate powders Pb1-xRExTiO3 (REPT), x = 0.01, 0.05, 0.07 and RE = Yb, Y, were prepared by the Pechini method. The materials were calcined under flowing oxygen at different temperatures from 300 to 700 ºC.
F. C. D. Lemos, D. M. A. Melo, P. S. de Lima, C. A. Paskocimas, E. Longo, J. E.C. da Silva   +5 more
doaj   +1 more source

Síntese e caracterização de materiais termoelétricos baseados no sistema CA-Co-O [PDF]

, 2014
Mestrado em Engenharia FísicaOs óxidos de metais, como é o caso dos óxidos de cálcio e cobalto, são materiais de elevado interesse tecnológico atendendo às suas propriedades termoelétricas, o que poderá favorecer a sua utilização como conversor de ...
Miyazawa, Keiji
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Sol–gel synthesis and sintering of submicronic copper molybdate (α-CuMoO4) powders [PDF]

, 2014
A sol–gel method was proposed to prepare copper II molybdate α-CuMoO4 powders. A gel was first obtained via the polymerizable complex method, using citric acid as complexing and polymerizing agent, dried at 120 °C and decomposed at 300 °C.
Benchikhi, Mohamed, Chane-Ching, Jean-Yves, Durand, Bernard, El Ouatib, Rachida, Er-Rakho, Lahcen, Guillemet-Fritsch, Sophie   +5 more
core   +2 more sources

Highly Active Air Electrode with Enhanced Proton Conduction via Isovalent Doping in a Layered Perovskite for Reversible Protonic Ceramic Cells

Advanced Functional Materials, Volume 35, Issue 41, October 8, 2025.
A Ni‐doped PBSCN20 air electrode is proposed as a promising air electrode material for reversible protonic ceramic cells. An isovalent doping significantly facilitates oxygen vacancy formation and proton uptake while simultaneously reducing the energy barrier for proton migration.
Jiwon Yun, Hyeongsik Shin, Seungchan Kim, Boseok Seong, Seongjae Lee, Kyeounghak Kim, Sun Hee Choi, Sihyuk Choi   +7 more
wiley   +1 more source