Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst
Nitrogen oxides (NOx) are known for having a significant greenhouse effect and provoking several health issues. Because of that, it is necessary to find an effective manner to remove them from polluted air. In this study, samarium-doped titania was synthesized via sol-gel using two different synthes...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
Elsevier
2024
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| Acceso en línea: | http://eprints.uanl.mx/30203/7/30203.pdf |
| _version_ | 1838551030634119168 |
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| author | Alviz Meza, A. Sierra González, X. Martínez de la Cruz, A. Colina Marquez, J.A. |
| author_facet | Alviz Meza, A. Sierra González, X. Martínez de la Cruz, A. Colina Marquez, J.A. |
| author_sort | Alviz Meza, A. |
| collection | Repositorio Institucional |
| description | Nitrogen oxides (NOx) are known for having a significant greenhouse effect and provoking several health issues. Because of that, it is necessary to find an effective manner to remove them from polluted air. In this study, samarium-doped titania was synthesized via sol-gel using two different synthesis routes and varying the calcination temperature and the Sm3+ content. The main difference between the two syntheses was the pH solution. The acidic pH favored the presence of the anatase crystalline phase, the most photoactive and interesting for photocatalytic applications. Furthermore, these catalysts were evaluated in a lab-scale UV photoreactor following the NO conversion via chemiluminescence, according to the ISO standard 22197–1. The Sm content positively affected the NO removal. The highest NO conversion was 92 %, with the doped titania obtained at a calcination temperature of 500 ◦C and with 0.5 % wt. of samarium. This result was congruent with the reported literature’s energy bandgap estimated (2.98 eV). |
| format | Article |
| id | eprints-30203 |
| institution | UANL |
| language | English |
| publishDate | 2024 |
| publisher | Elsevier |
| record_format | eprints |
| spelling | eprints-302032025-07-08T14:57:35Z http://eprints.uanl.mx/30203/ Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst Alviz Meza, A. Sierra González, X. Martínez de la Cruz, A. Colina Marquez, J.A. Nitrogen oxides (NOx) are known for having a significant greenhouse effect and provoking several health issues. Because of that, it is necessary to find an effective manner to remove them from polluted air. In this study, samarium-doped titania was synthesized via sol-gel using two different synthesis routes and varying the calcination temperature and the Sm3+ content. The main difference between the two syntheses was the pH solution. The acidic pH favored the presence of the anatase crystalline phase, the most photoactive and interesting for photocatalytic applications. Furthermore, these catalysts were evaluated in a lab-scale UV photoreactor following the NO conversion via chemiluminescence, according to the ISO standard 22197–1. The Sm content positively affected the NO removal. The highest NO conversion was 92 %, with the doped titania obtained at a calcination temperature of 500 ◦C and with 0.5 % wt. of samarium. This result was congruent with the reported literature’s energy bandgap estimated (2.98 eV). Elsevier 2024-12-15 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/30203/7/30203.pdf http://eprints.uanl.mx/30203/7.haspreviewThumbnailVersion/30203.pdf Alviz Meza, A. y Sierra González, X. y Martínez de la Cruz, A. y Colina Marquez, J.A. (2024) Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst. Solid State Communications, 394. p. 115692. ISSN 0038-1098 doi:10.1016/j.ssc.2024.115692 |
| spellingShingle | Alviz Meza, A. Sierra González, X. Martínez de la Cruz, A. Colina Marquez, J.A. Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst |
| title_full | Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst |
| title_fullStr | Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst |
| title_full_unstemmed | Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst |
| title_short | Rapid NO conversion with an enhanced Sm+3-TiO2 photocatalyst |
| title_sort | rapid no conversion with an enhanced sm 3 tio2 photocatalyst |
| url | http://eprints.uanl.mx/30203/7/30203.pdf |
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