Now showing items 1-10 of 15
A theoretical approach of the ethanol adsorption on Au(100), Au(110) and Au(111) surfaces
The adsorption of ethanol on Au(100), Au(110) and Au(111) surfaces was studied using electronic structure calculations under the scheme of the density functional theory (DFT) with van der Waals corrections, vdW-DF2 and PBE ...
Nanostructured Sensors for Determination of 3-(3,4-Dichlorophenyl)-1,1-Dimethylurea Based in Molecularly Imprinted Polymers (MIPs) Deposited in Screen Printed Carbon Nanotubes
(The Electrochemical Society, 2015)
A sensor based on molecularly imprinted polymers (MIP) was developed for determination of 3-(3,4-Dichlorophenyl)-1,1- dimethylurea (diuron). The MIP were synthesized by free radical polymerization in wich diuron acted ...
Espectrómetro para radiación visible hecho en casa, de bajo costo y altas prestaciones
(Sociedad Química del Perú, 2013)
Un problema de la enseñanza – aprendizaje del análisis químico instrumental es el alto costo de la instrumentación comercial, incluyendo aspectos de mantenimiento y servicio. Esto limita el acceso de los estudiantes a la ...
Adsorption of antipyrine by activated carbons from FeCl3-activation of Tara gum
(Elsevier BV, 2018)
Activated carbons were synthesized by FeCl3-activation of Tara gum at different temperatures (400–1000 °C). The activating agent and the precursor were physically mixed at different ratios (r= FeCl3:precursor, 0.5–3.0 ...
In vitro antiproliferative activity of palladium(II) thiosemicarbazone complexes and the corresponding functionalized chitosan coated magnetite nanoparticles
(The Royal Society of Chemistry and the Centre National de la Recherche Scientifique, 2016)
This work reports the synthesis and characterization of palladium(II) complexes Pd(L1)2 (1), Pd(L2)2 (2), Pd(L3)2 (3) and Pd(L4)2 (4), where L1H: 1-naphthaldehyde thiosemicarbazone; L2H: 4-phenyl-(1-naphthaldehyde)thiose ...
Effect of y-irradiation on the growth of ZnO nanorod films for photocatalytic disinfection of contaminated water
(Academic Press, 2011)
The growth of ZnO nanorods on a flat substrate containing c-irradiated seeds and their ability to photocatalytically eliminate bacteria in water were studied. The seed layer was obtained, by the spray pyrolysis technique, ...
The role of seeding in the morphology and wettability of ZnO nanorods films on different substrates
(Elsevier BV, 2013)
Spray pyrolysis (SP) and spray-gel (SG) techniques were used to deposit ZnO seeds on Fluor doped tin oxide glasses (FTO), heated at 350 ¿C or 130 ¿C, and PET heated at 90 ¿C. The effect of seeding on the morphology and ...
Design and construction of a fresnel linear distiller
(Allerton Press, Inc., 2014)
It was designed a Fresnel linear distiller based on optical calculations obtained from taking into account Lima's latitude value, Earth inclination angle and heat absorber cavity's dimensions. The 5.6 m^sup 2^ reflective ...
Synthesis and Characterization of ZnO Nanorod Films on PET for Photocatalytic Disinfection of Water
(Science & Technology Network, Inc., 2015)
ZnO nanorods (ZnO NRs) were grown on ZnO seeded polyethylene tert-phtalate (PET) substrates obtained from recycled soda bottles at low temperatures (90 °C) from Zn2+ precursors in alkaline aqueous solution. The ZnO seeds ...
Desalination using a parabolic-trough concentrator
(Allerton Press Inc., 2012)
There are presented desalination results by using a parabolic-trough concentrator (PTC) device of 5.5 m2, 0.7 m of line focal distance and aligned in the East—West direction. The length of the PTC is 2.5 m and its rectangular ...