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Tópicos Sugeridos dentro de su búsqueda.
1
artículo
Publicado 2020
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The preparation in the formation of self-assembled monolayers on silicon surfaces has allowed us the technological advancement of new organic semiconductor materials, obtaining devices that stand out for their electrical properties at the nanometric scale1. For this investigation, the reaction between alkenes and hydrogenated surface of Si (100) was considered to form self-assembled organic monolayers2. The organic molecules of alkenes used were 1-dodecene, 1-tetradecene, 1-hexadecene and 1-octadecene, which stand out for the functionalization process of these organic films. For the treatment of the silicon surface, a previous hydrogenation3,4 reaction was considered, obtaining Si-H functional groups on the surface. Regarding, the formation reaction of the organic monolayer, the silicon substrate of the hydrogenated surface reacted with each of the alkenes5 at 220°C for 2 hours. The exp...
2
artículo
Publicado 2018
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La preparación en la formación de monocapas auto-ensambladas en las superficies de silicio nos ha permitido el avance tecnológico de nuevos materiales semiconductores orgánicos, obteniéndose dispositivos que sobresalen por sus propiedades eléctricas a escala nanométrica1. Para esta investigación, se consideró la reacción entre alquenos y la superficie hidrogenada de Si (100) para formar monocapas orgánicas auto-ensambladas2. Las moléculas orgánicas de alquenos que se utilizaron fueron 1-dodeceno, 1-tetradeceno, 1-hexadeceno y 1-octadeceno, los cuales resaltan para el proceso de funcionalización de estas películas orgánicas. Para el tratamiento de la superficie de silicio se tomó en cuenta una previa reacción de hidrogenación3,4,obteniéndose grupos funcionales Si-H en la superficie. Respecto a la reacción de formación de la monocapa orgánica, el sustrato de silicio ...
3
tesis doctoral
Publicado 2022
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Enlace
Photoelectrochemical (PEC) processes have become an efficient and viable method for solar energy conversion into zero-emission fuels by harnessing and storage the power of the sun, which offers an environment-friendly approach. Hydrogen is considered as a sustainable and suitable energy alternative in comparison to energy systems based on the consumption of conventional hydrocarbon fuels. In particular, hydrogen production by PEC water splitting represents an attractive alternative to enhance the efficiency of water splitting process using sun light. Current research in this field is devoted to the fabrication and evaluation of new photoactive materials that upon sunlight absorption enable water-splitting PEC reactions with high efficiency and durability. Silicon based compounds offer a good opportunity as photoactive material due to its high abundance and current scalable technologies. ...
4
tesis doctoral
Publicado 2022
Enlace
Enlace
Photoelectrochemical (PEC) processes have become an efficient and viable method for solar energy conversion into zero-emission fuels by harnessing and storage the power of the sun, which offers an environment-friendly approach. Hydrogen is considered as a sustainable and suitable energy alternative in comparison to energy systems based on the consumption of conventional hydrocarbon fuels. In particular, hydrogen production by PEC water splitting represents an attractive alternative to enhance the efficiency of water splitting process using sun light. Current research in this field is devoted to the fabrication and evaluation of new photoactive materials that upon sunlight absorption enable water-splitting PEC reactions with high efficiency and durability. Silicon based compounds offer a good opportunity as photoactive material due to its high abundance and current scalable technologies. ...
5
tesis doctoral
Large amounts of pectin-rich biomass are produced mainly from juice and sugar industries. Pectinases represent an economical and eco-friendly alternative to depolymerise it in comparison with chemical treatments, for both obtaining bio-based chemicals and improving industrial bioprocess. This thesis aimed to identify novel thermophilic pectinases, carry out their functional characterisation, and explore the synergistic activity between pectin methylesterases (PMEs) and exo-polygalacturonases (exo-PGs) for pectin bioconversion into galacturonic acid (GalA). Also, the work was focused on the co-expression of genes encoding a PME and exo-PG in a single host for a cost-effective pectin bioconversion into GalA. Finally, the synergistic activity between PMEs and pectate lyases (PGLs) for improving pectin depolymerisation, useful in several industrial processes, was also explored. A total of se...
