Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides
Cu2O/BiVO4 composites with different Cu2O co-catalysts were synthesized by a simple impregnation method at 200 �C for 4 h under N2 atmosphere. The Cu2O powder was obtained through the chemical reduction of copper sulfate using different reducing reagents such as ascorbic acid, glucose or fructose. T...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
2017
|
| Subjects: | |
| Online Access: | http://eprints.uanl.mx/18212/1/503.pdf |
| _version_ | 1824415170555805696 |
|---|---|
| author | Aguilera Ruiz, Eduardo De La Garza Galván, María de Jesús Zambrano Robledo, Patricia del Carmen Ballesteros Pacheco, Juan Carlos Vázquez Arenas, J. Peral, J. García Pérez, Ulises Matías |
| author_facet | Aguilera Ruiz, Eduardo De La Garza Galván, María de Jesús Zambrano Robledo, Patricia del Carmen Ballesteros Pacheco, Juan Carlos Vázquez Arenas, J. Peral, J. García Pérez, Ulises Matías |
| author_sort | Aguilera Ruiz, Eduardo |
| collection | Repositorio Institucional |
| description | Cu2O/BiVO4 composites with different Cu2O co-catalysts were synthesized by a simple impregnation method at 200 �C for 4 h under N2 atmosphere. The Cu2O powder was obtained through the chemical reduction of copper sulfate using different reducing reagents such as ascorbic acid, glucose or fructose. The as-synthesized samples were characterized by X-ray powder diffraction, scanning and transmission electron microscopies, UV-vis diffuse reflection absorption and electrochemical impedance spectroscopy. The photoactivities of the Cu2O/BiVO4 composites were evaluated in terms of the mineralization of 4-chlorophenol (4-CP) in aqueous solutions under visible-light irradiation. The role of experimental variables including the preparation method of the co-catalyst, catalyst concentration, and 4-chlorophenol initial concentration in the photocatalytic performance of Cu2O/BiVO4 catalysts was analyzed. Likewise, the viability to recover and reuse these photocatalysts was also tested. It was found that the complete abatement of 4-CP led to the formation of chlorocatechol (4-CC) without concomitantly involving the formation pathway of hydroquinone/p-benzoquinone, 4-CC was identified in the light of experimental evidence (UV-vis) and spectral simulation done by using time-dependent density functional theory (TD-DFT) with the polarized continuum model. |
| format | Article |
| id | eprints-18212 |
| institution | UANL |
| language | English |
| publishDate | 2017 |
| record_format | eprints |
| spelling | eprints-182122024-02-16T15:14:58Z http://eprints.uanl.mx/18212/ Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides Aguilera Ruiz, Eduardo De La Garza Galván, María de Jesús Zambrano Robledo, Patricia del Carmen Ballesteros Pacheco, Juan Carlos Vázquez Arenas, J. Peral, J. García Pérez, Ulises Matías TJ Ingeniería Mecánica Cu2O/BiVO4 composites with different Cu2O co-catalysts were synthesized by a simple impregnation method at 200 �C for 4 h under N2 atmosphere. The Cu2O powder was obtained through the chemical reduction of copper sulfate using different reducing reagents such as ascorbic acid, glucose or fructose. The as-synthesized samples were characterized by X-ray powder diffraction, scanning and transmission electron microscopies, UV-vis diffuse reflection absorption and electrochemical impedance spectroscopy. The photoactivities of the Cu2O/BiVO4 composites were evaluated in terms of the mineralization of 4-chlorophenol (4-CP) in aqueous solutions under visible-light irradiation. The role of experimental variables including the preparation method of the co-catalyst, catalyst concentration, and 4-chlorophenol initial concentration in the photocatalytic performance of Cu2O/BiVO4 catalysts was analyzed. Likewise, the viability to recover and reuse these photocatalysts was also tested. It was found that the complete abatement of 4-CP led to the formation of chlorocatechol (4-CC) without concomitantly involving the formation pathway of hydroquinone/p-benzoquinone, 4-CC was identified in the light of experimental evidence (UV-vis) and spectral simulation done by using time-dependent density functional theory (TD-DFT) with the polarized continuum model. 2017-09-20 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/18212/1/503.pdf http://eprints.uanl.mx/18212/1.haspreviewThumbnailVersion/503.pdf Aguilera Ruiz, Eduardo y De La Garza Galván, María de Jesús y Zambrano Robledo, Patricia del Carmen y Ballesteros Pacheco, Juan Carlos y Vázquez Arenas, J. y Peral, J. y García Pérez, Ulises Matías (2017) Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides. RSC Adv., 7 (73). pp. 45885-45895. ISSN 2046-2069 http://doi.org/10.1039/c7ra08513c doi:10.1039/c7ra08513c |
| spellingShingle | TJ Ingeniería Mecánica Aguilera Ruiz, Eduardo De La Garza Galván, María de Jesús Zambrano Robledo, Patricia del Carmen Ballesteros Pacheco, Juan Carlos Vázquez Arenas, J. Peral, J. García Pérez, Ulises Matías Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides |
| title_full | Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides |
| title_fullStr | Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides |
| title_full_unstemmed | Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides |
| title_short | Facile synthesis of visible-light-driven Cu2O/BiVO4 composites for the photomineralization of recalcitrant pesticides |
| title_sort | facile synthesis of visible light driven cu2o bivo4 composites for the photomineralization of recalcitrant pesticides |
| topic | TJ Ingeniería Mecánica |
| url | http://eprints.uanl.mx/18212/1/503.pdf |
| work_keys_str_mv | AT aguileraruizeduardo facilesynthesisofvisiblelightdrivencu2obivo4compositesforthephotomineralizationofrecalcitrantpesticides AT delagarzagalvanmariadejesus facilesynthesisofvisiblelightdrivencu2obivo4compositesforthephotomineralizationofrecalcitrantpesticides AT zambranorobledopatriciadelcarmen facilesynthesisofvisiblelightdrivencu2obivo4compositesforthephotomineralizationofrecalcitrantpesticides AT ballesterospachecojuancarlos facilesynthesisofvisiblelightdrivencu2obivo4compositesforthephotomineralizationofrecalcitrantpesticides AT vazquezarenasj facilesynthesisofvisiblelightdrivencu2obivo4compositesforthephotomineralizationofrecalcitrantpesticides AT peralj facilesynthesisofvisiblelightdrivencu2obivo4compositesforthephotomineralizationofrecalcitrantpesticides AT garciaperezulisesmatias facilesynthesisofvisiblelightdrivencu2obivo4compositesforthephotomineralizationofrecalcitrantpesticides |