Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatment
A hybrid film of chitosan/poly(vinyl alcohol)/cationic Fe(III)-porphyrin (Cht/PVA-FeTMPyP) was synthesized to act as a Fenton-like catalyst to decolorize methyl orange and methyl red azo dyes. The Cht/PVA-FeTMPyP film was characterized by different analytical and microscopy techniques, which indicat...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-07-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535220301271 |
| _version_ | 1811211099879505920 |
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| author | Henrique P. Mota Rafael F.N. Quadrado Thiago A.L. Burgo Bernardo A. Iglesias André R. Fajardo |
| author_facet | Henrique P. Mota Rafael F.N. Quadrado Thiago A.L. Burgo Bernardo A. Iglesias André R. Fajardo |
| author_sort | Henrique P. Mota |
| collection | DOAJ |
| description | A hybrid film of chitosan/poly(vinyl alcohol)/cationic Fe(III)-porphyrin (Cht/PVA-FeTMPyP) was synthesized to act as a Fenton-like catalyst to decolorize methyl orange and methyl red azo dyes. The Cht/PVA-FeTMPyP film was characterized by different analytical and microscopy techniques, which indicated that the metalloporphyrin affects different properties of the hybrid film. Batch experiments revealed that the hybrid film exhibits enhanced catalytic activity towards dyes decolorization in the presence of H2O2 as compared to the “free” FeTMPyP. Fast decolorization rates as high as 90 min were observed for both azo dyes under mild conditions (pH 7 and room temperature), even at low concentrations of the catalyst in H2O2. After the decolorization, FTIR analysis showed that simple molecules are released as by-products. Moreover, the hybrid film performed well in cyclic runs without leaching out iron ions or losing its catalytic activity. All these features associated with its ease handling ranks the Cht/PVA-FeTMPyP hybrid film as a promising heterogeneous Fenton-like catalyst for the decomposition of azo dyes in water. |
| first_indexed | 2024-04-12T05:06:55Z |
| format | Article |
| id | doaj.art-65e9de443b644c9aacfa782b910e4612 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-12T05:06:55Z |
| publishDate | 2020-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-65e9de443b644c9aacfa782b910e46122022-12-22T03:46:51ZengElsevierArabian Journal of Chemistry1878-53522020-07-0113759235938Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatmentHenrique P. Mota0Rafael F.N. Quadrado1Thiago A.L. Burgo2Bernardo A. Iglesias3André R. Fajardo4Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900 Pelotas-RS, BrazilLaboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900 Pelotas-RS, BrazilDepartamento de Física, Universidade Federal de Santa Maria, Av. Roraima 1000, Campus Camobi, 97105-900, Santa Maria RS, BrazilLaboratório de Bioinorgânica e Materiais Porfirínicos, Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima 1000, Campus Camobi, 97105-900 Santa Maria-RS, Brazil; Corresponding authors.Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900 Pelotas-RS, Brazil; Corresponding authors.A hybrid film of chitosan/poly(vinyl alcohol)/cationic Fe(III)-porphyrin (Cht/PVA-FeTMPyP) was synthesized to act as a Fenton-like catalyst to decolorize methyl orange and methyl red azo dyes. The Cht/PVA-FeTMPyP film was characterized by different analytical and microscopy techniques, which indicated that the metalloporphyrin affects different properties of the hybrid film. Batch experiments revealed that the hybrid film exhibits enhanced catalytic activity towards dyes decolorization in the presence of H2O2 as compared to the “free” FeTMPyP. Fast decolorization rates as high as 90 min were observed for both azo dyes under mild conditions (pH 7 and room temperature), even at low concentrations of the catalyst in H2O2. After the decolorization, FTIR analysis showed that simple molecules are released as by-products. Moreover, the hybrid film performed well in cyclic runs without leaching out iron ions or losing its catalytic activity. All these features associated with its ease handling ranks the Cht/PVA-FeTMPyP hybrid film as a promising heterogeneous Fenton-like catalyst for the decomposition of azo dyes in water.http://www.sciencedirect.com/science/article/pii/S1878535220301271Hybrid materialsHeterogeneous catalysisChitosanMetalloporphyrinsAzo dyesWastewater treatment |
| spellingShingle | Henrique P. Mota Rafael F.N. Quadrado Thiago A.L. Burgo Bernardo A. Iglesias André R. Fajardo Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatment Arabian Journal of Chemistry Hybrid materials Heterogeneous catalysis Chitosan Metalloporphyrins Azo dyes Wastewater treatment |
| title | Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatment |
| title_full | Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatment |
| title_fullStr | Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatment |
| title_full_unstemmed | Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatment |
| title_short | Polysaccharide/Fe(III)-porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes: An approach for wastewater treatment |
| title_sort | polysaccharide fe iii porphyrin hybrid film as catalyst for oxidative decolorization of toxic azo dyes an approach for wastewater treatment |
| topic | Hybrid materials Heterogeneous catalysis Chitosan Metalloporphyrins Azo dyes Wastewater treatment |
| url | http://www.sciencedirect.com/science/article/pii/S1878535220301271 |
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