Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method
Cerium oxide and mixed Cu/Ce oxide nanoparticles were prepared by the oil-in-water (O/W) microemulsion reaction method in mild conditions. The Cu/Ce molar ratio was varied between 0/100 and 50/50. According to X-ray diffraction (XRD), below 30/70 Cu/Ce molar ratio, the materials presented a single...
| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
2016
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| Acceso en línea: | http://eprints.uanl.mx/14770/1/21.pdf |
| _version_ | 1824414137408552960 |
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| author | Pemartin Biernath, Kelly Vela González, Andrea Moreno Trejo, Maira Leyva Porras, César Castañeda Reyna, Iván Eduardo Juárez Ramírez, Isaías Solans, Conxita Sánchez Domínguez, Margarita |
| author_facet | Pemartin Biernath, Kelly Vela González, Andrea Moreno Trejo, Maira Leyva Porras, César Castañeda Reyna, Iván Eduardo Juárez Ramírez, Isaías Solans, Conxita Sánchez Domínguez, Margarita |
| author_sort | Pemartin Biernath, Kelly |
| collection | Repositorio Institucional |
| description | Cerium oxide and mixed Cu/Ce oxide nanoparticles were prepared by the oil-in-water (O/W) microemulsion reaction method in mild conditions. The Cu/Ce molar ratio was varied between 0/100 and 50/50. According to X-ray diffraction (XRD), below 30/70 Cu/Ce molar ratio,
the materials presented a single phase consistent with cubic fluorite CeO2. However, above Cu/Ce molar ratio 30/70, an excess monoclinic CuO phase in coexistence with the predominant Cu/Ce mixed oxide was detected by XRD and High-Resolution Transmission Electron Microscopy (HRTEM).
Raman spectroscopy showed that oxygen vacancies increased significantly as the Cu content was increased. Band gap (Eg) was investigated as a function of the Cu/Ce molar ratio, resulting in values from 2.91 eV for CeO2 to 2.32 eV for the mixed oxide with 30/70 Cu/Ce molar ratio. These results indicate that below 30/70 Cu/Ce molar ratio, Cu2+ is at least partially incorporated into the ceria lattice and very well dispersed in general. In addition, the photodegradation of Indigo Carmine dye
under visible light irradiation was explored for selected samples; it was shown that these materials can remove such contaminants, either by adsorption and/or photodegradation. The results obtained will encourage investigation into the optical and photocatalytic properties of these mixed oxides, for widening their potential applications. |
| format | Article |
| id | eprints-14770 |
| institution | UANL |
| language | English |
| publishDate | 2016 |
| record_format | eprints |
| spelling | eprints-147702019-08-09T18:38:05Z http://eprints.uanl.mx/14770/ Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method Pemartin Biernath, Kelly Vela González, Andrea Moreno Trejo, Maira Leyva Porras, César Castañeda Reyna, Iván Eduardo Juárez Ramírez, Isaías Solans, Conxita Sánchez Domínguez, Margarita Cerium oxide and mixed Cu/Ce oxide nanoparticles were prepared by the oil-in-water (O/W) microemulsion reaction method in mild conditions. The Cu/Ce molar ratio was varied between 0/100 and 50/50. According to X-ray diffraction (XRD), below 30/70 Cu/Ce molar ratio, the materials presented a single phase consistent with cubic fluorite CeO2. However, above Cu/Ce molar ratio 30/70, an excess monoclinic CuO phase in coexistence with the predominant Cu/Ce mixed oxide was detected by XRD and High-Resolution Transmission Electron Microscopy (HRTEM). Raman spectroscopy showed that oxygen vacancies increased significantly as the Cu content was increased. Band gap (Eg) was investigated as a function of the Cu/Ce molar ratio, resulting in values from 2.91 eV for CeO2 to 2.32 eV for the mixed oxide with 30/70 Cu/Ce molar ratio. These results indicate that below 30/70 Cu/Ce molar ratio, Cu2+ is at least partially incorporated into the ceria lattice and very well dispersed in general. In addition, the photodegradation of Indigo Carmine dye under visible light irradiation was explored for selected samples; it was shown that these materials can remove such contaminants, either by adsorption and/or photodegradation. The results obtained will encourage investigation into the optical and photocatalytic properties of these mixed oxides, for widening their potential applications. 2016 Article PeerReviewed text en http://eprints.uanl.mx/14770/1/21.pdf http://eprints.uanl.mx/14770/1.haspreviewThumbnailVersion/21.pdf Pemartin Biernath, Kelly y Vela González, Andrea y Moreno Trejo, Maira y Leyva Porras, César y Castañeda Reyna, Iván Eduardo y Juárez Ramírez, Isaías y Solans, Conxita y Sánchez Domínguez, Margarita (2016) Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method. Materials, 9 (6). p. 480. ISSN 1996-1944 http://doi.org/10.3390/ma9060480 doi:10.3390/ma9060480 |
| spellingShingle | Pemartin Biernath, Kelly Vela González, Andrea Moreno Trejo, Maira Leyva Porras, César Castañeda Reyna, Iván Eduardo Juárez Ramírez, Isaías Solans, Conxita Sánchez Domínguez, Margarita Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method |
| title_full | Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method |
| title_fullStr | Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method |
| title_full_unstemmed | Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method |
| title_short | Synthesis of mixed Cu/Ce oxide nanoparticles by the oil-in-water microemulsion reaction method |
| title_sort | synthesis of mixed cu ce oxide nanoparticles by the oil in water microemulsion reaction method |
| url | http://eprints.uanl.mx/14770/1/21.pdf |
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