Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films
In this work, we studied the effect of TiO2 sensitization with dry biomass extracted of cyanobacteria on the degradation of methylene blue dye (AM). Cyanobacterial cultures isolated from water samples were collected from the swamp of Malambo in Colombia; two main genera of cyanobacteria were identif...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2019/7184327 |
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| author | Karen Patiño-Camelo Carlos Diaz-Uribe Euler Gallego-Cartagena William Vallejo Vincent Martinez Cesar Quiñones Mikel Hurtado E. Schott |
| author_facet | Karen Patiño-Camelo Carlos Diaz-Uribe Euler Gallego-Cartagena William Vallejo Vincent Martinez Cesar Quiñones Mikel Hurtado E. Schott |
| author_sort | Karen Patiño-Camelo |
| collection | DOAJ |
| description | In this work, we studied the effect of TiO2 sensitization with dry biomass extracted of cyanobacteria on the degradation of methylene blue dye (AM). Cyanobacterial cultures isolated from water samples were collected from the swamp of Malambo in Colombia; two main genera of cyanobacteria were identified, and they were cultivated with BG-11 culture medium. The concentrations of chlorophyll a in the exponential and stationary phases of growth were measured; the phycobilin content was quantified by spectrophotometry. Thin films of TiO2 were deposited by a doctor blade method, and they were sensitized by wet impregnation. Furthermore, a methylene blue (MB) photodegradation process was studied under visible light irradiation on the cyanobacterial biomass sensitized TiO2 material (TiO2/sensitizer); besides, the pseudo-first-order model was used to obtain kinetic information about photocatalytic degradation. The results showed that the BG-11+ treatment reported a higher amount of dry biomass and phycobiliproteins. After the sensitization process, the TiO2/sensitizer thin films showed a significant red shift in the optical activity; besides the thin film roughness decreasing, the TiO2/sensitizer showed photocatalytic activity of 23.2% under visible irradiation, and besides, the kinetic (kap) constant for TiO2/sensitizer thin films was 3.1 times greater than the kap value of TiO2 thin films. Finally, results indicated that cyanobacterial biomass is a suitable source of natural sensitizers to be used in semiconductor sensitization. |
| format | Article |
| id | doaj-art-c7dbbea9dee84402861f895ed6b68a3c |
| institution | OA Journals |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-c7dbbea9dee84402861f895ed6b68a3c2025-08-20T02:19:44ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2019-01-01201910.1155/2019/71843277184327Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin FilmsKaren Patiño-Camelo0Carlos Diaz-Uribe1Euler Gallego-Cartagena2William Vallejo3Vincent Martinez4Cesar Quiñones5Mikel Hurtado6E. Schott7Grupo de Investigación en Fotoquímica y Fotobiología, Programa de Química, Facultad de Ciencias Básicas, Universidad del Atlántico, Carrera 30 # 8-49 Puerto Colombia, Atlántico, ColombiaGrupo de Investigación en Fotoquímica y Fotobiología, Programa de Química, Facultad de Ciencias Básicas, Universidad del Atlántico, Carrera 30 # 8-49 Puerto Colombia, Atlántico, ColombiaDepartment of Civil and Environmental, Universidad de la Costa, Calle 58 # 55-66, Barranquilla, ColombiaGrupo de Investigación en Fotoquímica y Fotobiología, Programa de Química, Facultad de Ciencias Básicas, Universidad del Atlántico, Carrera 30 # 8-49 Puerto Colombia, Atlántico, ColombiaGrupo de Investigación en Fotoquímica y Fotobiología, Programa de Química, Facultad de Ciencias Básicas, Universidad del Atlántico, Carrera 30 # 8-49 Puerto Colombia, Atlántico, ColombiaInstitución Universitaria Politécnico Gran Colombiano, Bogotá, ColombiaDepartamento de Ingeniería Electrónica, Cluster NBIC, Universidad Central, Bogotá, ColombiaDepartamento de Química Inorgánica, Energy Research Center, Facultad de Química, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, ChileIn this work, we studied the effect of TiO2 sensitization with dry biomass extracted of cyanobacteria on the degradation of methylene blue dye (AM). Cyanobacterial cultures isolated from water samples were collected from the swamp of Malambo in Colombia; two main genera of cyanobacteria were identified, and they were cultivated with BG-11 culture medium. The concentrations of chlorophyll a in the exponential and stationary phases of growth were measured; the phycobilin content was quantified by spectrophotometry. Thin films of TiO2 were deposited by a doctor blade method, and they were sensitized by wet impregnation. Furthermore, a methylene blue (MB) photodegradation process was studied under visible light irradiation on the cyanobacterial biomass sensitized TiO2 material (TiO2/sensitizer); besides, the pseudo-first-order model was used to obtain kinetic information about photocatalytic degradation. The results showed that the BG-11+ treatment reported a higher amount of dry biomass and phycobiliproteins. After the sensitization process, the TiO2/sensitizer thin films showed a significant red shift in the optical activity; besides the thin film roughness decreasing, the TiO2/sensitizer showed photocatalytic activity of 23.2% under visible irradiation, and besides, the kinetic (kap) constant for TiO2/sensitizer thin films was 3.1 times greater than the kap value of TiO2 thin films. Finally, results indicated that cyanobacterial biomass is a suitable source of natural sensitizers to be used in semiconductor sensitization.http://dx.doi.org/10.1155/2019/7184327 |
| spellingShingle | Karen Patiño-Camelo Carlos Diaz-Uribe Euler Gallego-Cartagena William Vallejo Vincent Martinez Cesar Quiñones Mikel Hurtado E. Schott Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films International Journal of Photoenergy |
| title | Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films |
| title_full | Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films |
| title_fullStr | Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films |
| title_full_unstemmed | Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films |
| title_short | Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films |
| title_sort | cyanobacterial biomass pigments as natural sensitizer for tio2 thin films |
| url | http://dx.doi.org/10.1155/2019/7184327 |
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