Artículo
Differences in the Catalytic Behavior of Au-Metalized
TiO2 Systems During Phenol Photo-Degradation and
CO Oxidation
Autor/es | Laguna Espitia, Oscar Hernando
Murcia Mesa, Julie Joseane Rojas Sarmiento, Hugo Alfonso Jaramillo Páez, César Augusto Navío Santos, José Antonio Hidalgo López, María del Carmen |
Departamento | Instituto de Ciencia de Materiales de Sevilla (ICMS) – CIC Cartuja |
Fecha de publicación | 2019-04-03 |
Fecha de depósito | 2019-07-04 |
Publicado en |
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Resumen | For this present work, a series of Au-metallized TiO 2 catalysts were synthesized and characterized in order to compare their performance in two different catalytic environments: the phenol degradation that occurs during ... For this present work, a series of Au-metallized TiO 2 catalysts were synthesized and characterized in order to compare their performance in two different catalytic environments: the phenol degradation that occurs during the liquid phase and in the CO oxidation phase, which proceeds the gas phase. The obtained materials were analyzed by different techniques such as XRF, SBET, XRD, TEM, XPS, and UV-Vis DRS. Although the metallization was not totally efficient in all cases, the amount of noble metal loaded depended strongly on the deposition time. Furthermore, the differences in the amount of loaded gold were important factors influencing the physicochemical properties of the catalysts, and consequently, their performances in the studied reactors. The addition of gold represented a considerable increase in the phenol conversion when compared with that of the TiO 2 , despite the small amount of noble metal loaded. However, this was not the case in the CO oxidation reaction. Beyond the differences in the phase where the reaction occurred, the loss of catalytic activity during the CO oxidation reaction was directly related to the sintering of the gold nanoparticles. |
Identificador del proyecto | ENE2015-66975-C3-2-R.C |
Cita | Laguna Espitia, O.H., Murcia Mesa, J.J., Rojas Sarmiento, H.A., Jaramillo Páez, C.A., Navío Santos, J.A. y Hidalgo López, M.d.C. (2019). Differences in the Catalytic Behavior of Au-Metalized TiO2 Systems During Phenol Photo-Degradation and CO Oxidation. Catalysts, 9 (4), 331. |
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