Browsing by Author "Díaz Droguett, Donovan Enrique"
Now showing items 1-11 of 11
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Mosquera Vargas, Edgar; Díaz Droguett, Donovan Enrique; Carvajal, Nicolás; Roble, Martín; Morel, Mauricio; Espinoza González, Rodrigo (Elsevier, 2014)The characterization and hydrogen storage capacity of multi-walled carbon nanotubes (MWCNTs) have been studied in the present work. MWCNTs with high purity and bulk yield were achieved from a mixture of camphor/ alcohol ...
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Díaz Droguett, Donovan Enrique; Espinoza, R.; Fuenzalida, V. M. (Elsevier, 2011)Copper nanoparticles with sizes between 10nm and 50nm were grown by condensation in hydrogen at pressures from 10 Pa to 1200 Pa. The crystallite size ranged from 10nm to 25nm using the Scherrer method. X-ray diffraction ...
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Electron beam effects on amorphous molybdenum oxide nanostructures grown by condensation in hydrogen Díaz Droguett, Donovan Enrique; Fuenzalida Escobar, Víctor; Díaz Espinoza, Marcela S.; Solorzano, Guillermo (2008)Molybdenum trioxide (MoO3) was evaporated from a tungsten resistive source in presence of hydrogen as carrier gas at pressures from 100 Pa to 600 Pa. Crystalline samples of molybdenum oxide were obtained at source temperatures ...
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Díaz Droguett, Donovan Enrique; Zúñiga Páez, Alejandro; Solorzano, G.; Fuenzalida, V. M. (Springer, 2012)Electron beam-induced damage and structural changes in MoO3 and MoO3-x single crystalline nanostructures were revealed by in situ transmission electron microscopy (TEM) examination (at 200 kV) after few minutes of ...
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Fuentes, S.; Zárate Aliaga, Ramón; Muñoz, P.; Díaz Droguett, Donovan Enrique (2010)CuO nanowires were successfully made through a simple wet chemical method at room temperature by immersing on copper sheets in a 4 M ammonia solution for 4 days and then subjecting it to heat treatment. Immersion time and ...
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Espinoza González, Rodrigo; Díaz Droguett, Donovan Enrique; Avila, J. I.; González Fuentes, Claudio A.; Fuenzalida, V. M. (2001)Zirconia nanorods and nanoparticles were grown hydrothermally starting from zirconium monoxide powder. The process was performed in an autoclave using NaOH as a mineralizer at nominal concentrations 15 M, 20 Mand 25 M, ...
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Díaz Droguett, Donovan Enrique; El Far, R.; Fuenzalida, V. M.; Cabrera, A. I. (2012)The structural transformations induced by heating on MoO3 mesoporous samples grown in vapor-phase under helium and hydrogen were studied by in situ Raman spectroscopy. The samples were continuously irradiated by a HeeNe ...
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Morel, Mauricio; Mosquera, Edgar; Díaz Droguett, Donovan Enrique; Carvajal, Nicolás; Roble, Martín; Rojas, Vania; Espinoza González, Rodrigo (Elsevier, 2015)Mineral magnetite was used as metallic oxide catalysts in the synthesis of Multi-Walled Carbon Nanotubes (MWCNTs) by Aerosol Assisted Chemical Vapor Deposition (AACVD). The structural and morphological information of MWCNTs ...
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Araya, M.; Díaz Droguett, Donovan Enrique; Ribeiro, M.; Albertin, K. F.; Avila, J.; Fuenzalida, V. M.; Espinoza, R.; Criado, D. (Elsevier, 2012)In this work we report studies of the photoluminescence emission in samples based on Si/SiOx films deposited by the Pulsed Electron Beam Ablation (PEBA) technique. The samples were prepared at room temperature using ...
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Removal of arsenic and iron from acidic water using zeolite and limestone: batch and column studies Lizama Allende, Katherine Eugenia; Henry Pinilla, Daniela Alejandra; Díaz Droguett, Donovan Enrique (Springer, 2017)Zeolite and limestone were tested for their capability of removing As and Fe from acidic water in batch and column experiments. Synthetic acidic water with 3 mg/L As and 50 or 100 mg/L Fe at pH = 2 was used in the column ...
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Fuenzalida Escobar, Víctor; Gálvez Arancibia, D. G.; Olavarría Contreras, Ignacio José; Salinger Basterrica, M. A.; Díaz Droguett, Donovan Enrique (2011)We report on the preparation of WO3 nanostructures using tungsten wire and iron wool in a domestic microwave oven. Pure WO3 nanoparticles were octahedral or rhombohedral while iron containing nanoparticles were spheroidal. ...