Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production
Copper oxide (CuO) is an abundant and low-cost material, which is active as a photocatalyst under visible light due to its narrow band gap (1.3 eV). In the present work, CuO thin films at different Ni doping amounts (5, 10, and 30 % mol) were prepared using two different techniques: dip-coating and...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423016459 |
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| author | Luz I. Ibarra-Rodriguez M.R. Alfaro Cruz Luis F. Garay-Rodriguez Blanca C. Hernandez-Majalca Jorge L. Domínguez-Arvizu Alejandro López-Ortiz Leticia M. Torres-Martínez Virginia H. Collins-Martínez |
| author_facet | Luz I. Ibarra-Rodriguez M.R. Alfaro Cruz Luis F. Garay-Rodriguez Blanca C. Hernandez-Majalca Jorge L. Domínguez-Arvizu Alejandro López-Ortiz Leticia M. Torres-Martínez Virginia H. Collins-Martínez |
| author_sort | Luz I. Ibarra-Rodriguez |
| collection | DOAJ |
| description | Copper oxide (CuO) is an abundant and low-cost material, which is active as a photocatalyst under visible light due to its narrow band gap (1.3 eV). In the present work, CuO thin films at different Ni doping amounts (5, 10, and 30 % mol) were prepared using two different techniques: dip-coating and electrodeposition of Cu precursors over glass and PET substrates. X-Ray analysis results indicate the presence of Cu2O, CuO and Cuo phases in PET substrate films, while only CuO phase in Glass-substrate films. Glass substrate films presented a higher formic acid production performance reaching 50,000 μmol/g·h using 5% Ni doping on CuO. This higher activity was associated with a lower ratio between the adsorbed oxygen and the oxygen located in the crystal lattice, attributing this to the oxygen species adsorbed over the surface that could hinder the active sites of the material. Finally, PET substrate samples present a higher ratio between adsorbed oxygen and lattice oxygen, however, the Cu2O phase presents less affinity to adsorb CO2 molecules than CuO monoclinic phase reducing the photoactivity of the CO2 photoreduction. Majority charge carrier mobility of 4 cm2/Vs and 35 cm2/Vs for Cu2O and CuO respectively, with the charge carrier concentration of ∼1 × 1019 order was achieved switching the conducting type. |
| first_indexed | 2024-03-11T15:07:08Z |
| format | Article |
| id | doaj.art-c65b3926313e41dba154242817c84019 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:07:08Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-c65b3926313e41dba154242817c840192023-10-30T06:02:35ZengElsevierJournal of Materials Research and Technology2238-78542023-09-0126137149Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid productionLuz I. Ibarra-Rodriguez0M.R. Alfaro Cruz1Luis F. Garay-Rodriguez2Blanca C. Hernandez-Majalca3Jorge L. Domínguez-Arvizu4Alejandro López-Ortiz5Leticia M. Torres-Martínez6Virginia H. Collins-Martínez7Centro de Investigación en Materiales Avanzados (CIMAV), S.C. Alianza Norte #202, Parque de Investigación e Innovación Tecnológica, Apodaca, Nuevo León, C.P. 66600, MéxicoCONAHCYT - Universidad Autónoma de Nuevo León, Facultad de Ingeniería Civil, Departamento de Ecomateriales y Energía, Av. Universidad S/N Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, C.P. 66455, MéxicoUniversidad Autónoma de Nuevo León, Facultad de Ingeniería Civil, Departamento de Ecomateriales y Energía, Av. Universidad S/N Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, C.P. 66455, MéxicoCentro de Investigación en Materiales Avanzados (CIMAV), S.C. Miguel de Cervantes 120, Complejo Industrial Chih, Chihuahua, Chih. 31136, MéxicoCentro de Investigación en Materiales Avanzados (CIMAV), S.C. Miguel de Cervantes 120, Complejo Industrial Chih, Chihuahua, Chih. 31136, MéxicoCentro de Investigación en Materiales Avanzados (CIMAV), S.C. Miguel de Cervantes 120, Complejo Industrial Chih, Chihuahua, Chih. 31136, MéxicoCentro de Investigación en Materiales Avanzados (CIMAV), S.C. Alianza Norte #202, Parque de Investigación e Innovación Tecnológica, Apodaca, Nuevo León, C.P. 66600, México; Universidad Autónoma de Nuevo León, Facultad de Ingeniería Civil, Departamento de Ecomateriales y Energía, Av. Universidad S/N Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, C.P. 66455, MéxicoCentro de Investigación en Materiales Avanzados (CIMAV), S.C. Miguel de Cervantes 120, Complejo Industrial Chih, Chihuahua, Chih. 31136, México; Corresponding author.Copper oxide (CuO) is an abundant and low-cost material, which is active as a photocatalyst under visible light due to its narrow band gap (1.3 eV). In the present work, CuO thin films at different Ni doping amounts (5, 10, and 30 % mol) were prepared using two different techniques: dip-coating and electrodeposition of Cu precursors over glass and PET substrates. X-Ray analysis results indicate the presence of Cu2O, CuO and Cuo phases in PET substrate films, while only CuO phase in Glass-substrate films. Glass substrate films presented a higher formic acid production performance reaching 50,000 μmol/g·h using 5% Ni doping on CuO. This higher activity was associated with a lower ratio between the adsorbed oxygen and the oxygen located in the crystal lattice, attributing this to the oxygen species adsorbed over the surface that could hinder the active sites of the material. Finally, PET substrate samples present a higher ratio between adsorbed oxygen and lattice oxygen, however, the Cu2O phase presents less affinity to adsorb CO2 molecules than CuO monoclinic phase reducing the photoactivity of the CO2 photoreduction. Majority charge carrier mobility of 4 cm2/Vs and 35 cm2/Vs for Cu2O and CuO respectively, with the charge carrier concentration of ∼1 × 1019 order was achieved switching the conducting type.http://www.sciencedirect.com/science/article/pii/S2238785423016459Copper oxide filmsFlexible substrateSolar fuelsPhotocatalysis |
| spellingShingle | Luz I. Ibarra-Rodriguez M.R. Alfaro Cruz Luis F. Garay-Rodriguez Blanca C. Hernandez-Majalca Jorge L. Domínguez-Arvizu Alejandro López-Ortiz Leticia M. Torres-Martínez Virginia H. Collins-Martínez Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production Journal of Materials Research and Technology Copper oxide films Flexible substrate Solar fuels Photocatalysis |
| title | Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production |
| title_full | Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production |
| title_fullStr | Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production |
| title_full_unstemmed | Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production |
| title_short | Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production |
| title_sort | photocatalytic reduction of co2 over ni cuxo thin films towards formic acid production |
| topic | Copper oxide films Flexible substrate Solar fuels Photocatalysis |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423016459 |
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