ZnO/TiO2 and ZnO/Nb2O5 as effective systems for the treatment of enteric bacteria and commercial dyes***
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Antioquia
2023
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| author | J. S. Hernández |
| author_facet | J. S. Hernández |
| contents | ZnO/TiO2 and ZnO/Nb2O5 as effective systems for the treatment of enteric bacteria and commercial dyes*** J. S. Hernández J. J. Murcia H. Rojas M. C. Hidalgo J. A. Navío Ingeniería ZnO dyes T iO2orN b2O5 photocatalysis enteropathogenic bacteria In this study, ZnO/TiO2 and ZnO/Nb2O5 photocatalysts were evaluated in the river pollution remediation and wastewater treatment from textile factories, thus, the target pollutants selected for this study were enteropathogenic bacteria and commercial dyes. The mixed oxide systems were extensively analyzed in order to explore their physicochemical properties. From this analysis, it was found that the coupling of two oxides did not modify the crystallinity of the pristine semiconductors. As a result, XRD Wurtzite phase, hexagonal phase, and anatase phases were identified for ZnO, Nb2O5, and TiO2 photocatalyst, respectively. Using UV-Vis DRS, a higher absorption for mixed oxides in the visible region of the electromagnetic spectrum was observed, along with a decrease in the band gap value in these materials. The results of the photocatalytic activity evaluation showed that the coupling of ZnO with Nb2O5 and TiO2 increased the effectiveness of the total organic carbon (TOC) and E. Coli elimination. 83% of TOC and elimination of 64% of E. coli were achieved using ZnO/Nb2O5 photocatalyst for the treatment of water samples from the polluted river. 2023 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43076001002 https://www.redalyc.org/journal/430/43076001002/ https://www.redalyc.org/journal/430/43076001002/html/ https://www.redalyc.org/journal/430/43076001002/43076001002.epub https://www.redalyc.org/journal/430/43076001002/movil https://doi.org/10.17533/udea.redin.20220785 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.108 |
| format | Artículo científico |
| id | redalyc_43076001002 |
| institution | Redalyc |
| language | en |
| publishDate | 2023 |
| publisher | Universidad de Antioquia |
| spellingShingle | ZnO/TiO2 and ZnO/Nb2O5 as effective systems for the treatment of enteric bacteria and commercial dyes*** J. S. Hernández Ingeniería ZnO dyes T iO2orN b2O5 photocatalysis enteropathogenic bacteria ZnO/TiO2 and ZnO/Nb2O5 as effective systems for the treatment of enteric bacteria and commercial dyes*** J. S. Hernández J. J. Murcia H. Rojas M. C. Hidalgo J. A. Navío Ingeniería ZnO dyes T iO2orN b2O5 photocatalysis enteropathogenic bacteria In this study, ZnO/TiO2 and ZnO/Nb2O5 photocatalysts were evaluated in the river pollution remediation and wastewater treatment from textile factories, thus, the target pollutants selected for this study were enteropathogenic bacteria and commercial dyes. The mixed oxide systems were extensively analyzed in order to explore their physicochemical properties. From this analysis, it was found that the coupling of two oxides did not modify the crystallinity of the pristine semiconductors. As a result, XRD Wurtzite phase, hexagonal phase, and anatase phases were identified for ZnO, Nb2O5, and TiO2 photocatalyst, respectively. Using UV-Vis DRS, a higher absorption for mixed oxides in the visible region of the electromagnetic spectrum was observed, along with a decrease in the band gap value in these materials. The results of the photocatalytic activity evaluation showed that the coupling of ZnO with Nb2O5 and TiO2 increased the effectiveness of the total organic carbon (TOC) and E. Coli elimination. 83% of TOC and elimination of 64% of E. coli were achieved using ZnO/Nb2O5 photocatalyst for the treatment of water samples from the polluted river. 2023 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43076001002 https://www.redalyc.org/journal/430/43076001002/ https://www.redalyc.org/journal/430/43076001002/html/ https://www.redalyc.org/journal/430/43076001002/43076001002.epub https://www.redalyc.org/journal/430/43076001002/movil https://doi.org/10.17533/udea.redin.20220785 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.108 |
| title | ZnO/TiO2 and ZnO/Nb2O5 as effective systems for the treatment of enteric bacteria and commercial dyes*** |
| topic | Ingeniería ZnO dyes T iO2orN b2O5 photocatalysis enteropathogenic bacteria |
| url | https://www.redalyc.org/articulo.oa?id=43076001002 https://www.redalyc.org/journal/430/43076001002/ https://www.redalyc.org/journal/430/43076001002/html/ https://www.redalyc.org/journal/430/43076001002/43076001002.epub https://www.redalyc.org/journal/430/43076001002/movil https://doi.org/10.17533/udea.redin.20220785 |