| dc.contributor | Luis Armando Diaz-Torres | |
| dc.creator | Takawira Mumanga | |
| dc.date | 2021-05 | |
| dc.date.accessioned | 2023-07-21T15:15:52Z | |
| dc.date.available | 2023-07-21T15:15:52Z | |
| dc.identifier | http://cio.repositorioinstitucional.mx/jspui/handle/1002/1212 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7725966 | |
| dc.description | "This work presents the development, characterization, and evaluation of 2D materials and Alkaline Metal Aluminates, namely Graphitic Carbon Nitrides (g-C3N4) and Barium or Magnesium Aluminates (MAl2O4: M=Ba or Mg) for the purpose of hydrogen generation. Graphitic carbon nitrides were synthesized by calcinating nitrogen-rich precursors at 550 °C whilst the alkaline metal aluminates were prepared by a combustion synthesis and were annealed in different gas atmospheres. The characterization of these photocatalysts was carried out through techniques such as X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Diffuse Reflectance Spectroscopy (DRS), Energy Dispersive Spectroscopy (EDS), Raman Spectroscopy (RS), Brunauer-Emmett-Teller (BET) surface area analysis, Diffuse Reflectance Spectroscopy (DRS), Photoluminescence measurements (PL), and Electrochemical Impedance Spectroscopy (EIS). The g-C3N4 photocatalysts were evaluated comparatively in Hydrogen Evolution Reactions (HERs) using irradiation from either low-cost visible (405 nm or 440 nm) 15 W/m LED strips or from a UV (254 nm, 4.4 mW/cm2) pencil lamp. A high hydrogen production rate of 1622 mol.g-1.h-1, corresponding to an AQY of 3.2%, was achieved under UV irradiation using g-C3N4 p-n homojunction which was synthesized from Thiourea. The same irradiation source rendered a maximum H2 generation rate of 97 μmol.h-1.g-1 using the carbon annealed magnesium aluminates. The overall results of these studies reveal the potential of these photocatalysts and major photocatalysis enhancement strategies based on conductivity modulation and heat treatment." | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.relation | citation:Mumanga, (2021). "The development of New Materials for Photocatalytic Hydrogen Generation". Tesis de Doctorado en Ciencias (Óptica). Centro de Investigaciones en Óptica, A.C. León, Guanajuato. 60 pp. | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0 | |
| dc.subject | info:eu-repo/classification/Autor/Photocatalysis | |
| dc.subject | info:eu-repo/classification/Autor/Hydrogen | |
| dc.subject | info:eu-repo/classification/Autor/Graphitic carbon nitride | |
| dc.subject | info:eu-repo/classification/Autor/Barium aluminate | |
| dc.subject | info:eu-repo/classification/Autor/Magnesium aluminate | |
| dc.subject | info:eu-repo/classification/Autor/Materials | |
| dc.subject | info:eu-repo/classification/cti/2 | |
| dc.subject | info:eu-repo/classification/cti/23 | |
| dc.subject | info:eu-repo/classification/cti/2307 | |
| dc.subject | info:eu-repo/classification/cti/221001 | |
| dc.subject | info:eu-repo/classification/cti/221001 | |
| dc.title | THE DEVELOPMENT OF NEW MATERIALS FOR PHOTOCATALYTIC HYDROGEN GENERATION | |
| dc.type | info:eu-repo/semantics/doctoralThesis | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.coverage | León, Guanajuato | |
| dc.audience | generalPublic | |
