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Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater
Recently, bismuth oxyiodide (BiOI) is an attractive semiconductor to use in heterogeneous photocatalysis processes. Unfortunately, BiOI individually shows limited photocatalytic efficiency, instability, and a quick recombination of electron/holes. Considering the practical application of this semico...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000862/ https://www.ncbi.nlm.nih.gov/pubmed/35407279 http://dx.doi.org/10.3390/nano12071161 |
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author | Gallegos-Alcaíno, Alejandra Robles-Araya, Nathaly Avalos, Camila Alfonso-Alvarez, Alexander Rodríguez, Carlos A. Valdés, Héctor Sánchez-Flores, Norma A. Durán-Alvarez, Juan C. Bizarro, Monserrat Romero-Salguero, Francisco J. Mera, Adriana C. |
author_facet | Gallegos-Alcaíno, Alejandra Robles-Araya, Nathaly Avalos, Camila Alfonso-Alvarez, Alexander Rodríguez, Carlos A. Valdés, Héctor Sánchez-Flores, Norma A. Durán-Alvarez, Juan C. Bizarro, Monserrat Romero-Salguero, Francisco J. Mera, Adriana C. |
author_sort | Gallegos-Alcaíno, Alejandra |
collection | PubMed |
description | Recently, bismuth oxyiodide (BiOI) is an attractive semiconductor to use in heterogeneous photocatalysis processes. Unfortunately, BiOI individually shows limited photocatalytic efficiency, instability, and a quick recombination of electron/holes. Considering the practical application of this semiconductor, some studies show that synthetic zeolites provide good support for this photocatalyst. This support material permits a better photocatalytic efficiency because it prevents the quick recombination of photogenerated pairs. However, the optimal conditions (time and temperature) to obtain composites (BiOI/ synthetic zeolite) with high photocatalytic efficiency using a coprecipitation-solvothermal growth method have not yet been reported. In this study, a response surface methodology (RSM) based on a central composite design (CCD) was applied to optimize the synthesis conditions of BiOI/mordenite composites. For this purpose, eleven BiOI/mordenite composites were synthesized using a combined coprecipitation-solvothermal method under different time and temperature conditions. The photocatalytic activities of the synthesized composites were evaluated after 20 min of photocatalytic oxidation of caffeic acid, a typical organic pollutant found in agro-industrial wastewater. Moreover, BiOI/mordenite composites with the highest and lowest photocatalytic activity were physically and chemically characterized using nitrogen adsorption isotherms, scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and diffuse reflectance spectroscopy (DRS). The optimal synthesis conditions prove to be 187 °C and 9 h. In addition, the changes applied to the experimental conditions led to surface property modifications that influenced the photocatalytic degradation efficiency of the BiOI/mordenite composite toward caffeic acid photodegradation. |
format | Online Article Text |
id | pubmed-9000862 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-90008622022-04-12 Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater Gallegos-Alcaíno, Alejandra Robles-Araya, Nathaly Avalos, Camila Alfonso-Alvarez, Alexander Rodríguez, Carlos A. Valdés, Héctor Sánchez-Flores, Norma A. Durán-Alvarez, Juan C. Bizarro, Monserrat Romero-Salguero, Francisco J. Mera, Adriana C. Nanomaterials (Basel) Article Recently, bismuth oxyiodide (BiOI) is an attractive semiconductor to use in heterogeneous photocatalysis processes. Unfortunately, BiOI individually shows limited photocatalytic efficiency, instability, and a quick recombination of electron/holes. Considering the practical application of this semiconductor, some studies show that synthetic zeolites provide good support for this photocatalyst. This support material permits a better photocatalytic efficiency because it prevents the quick recombination of photogenerated pairs. However, the optimal conditions (time and temperature) to obtain composites (BiOI/ synthetic zeolite) with high photocatalytic efficiency using a coprecipitation-solvothermal growth method have not yet been reported. In this study, a response surface methodology (RSM) based on a central composite design (CCD) was applied to optimize the synthesis conditions of BiOI/mordenite composites. For this purpose, eleven BiOI/mordenite composites were synthesized using a combined coprecipitation-solvothermal method under different time and temperature conditions. The photocatalytic activities of the synthesized composites were evaluated after 20 min of photocatalytic oxidation of caffeic acid, a typical organic pollutant found in agro-industrial wastewater. Moreover, BiOI/mordenite composites with the highest and lowest photocatalytic activity were physically and chemically characterized using nitrogen adsorption isotherms, scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and diffuse reflectance spectroscopy (DRS). The optimal synthesis conditions prove to be 187 °C and 9 h. In addition, the changes applied to the experimental conditions led to surface property modifications that influenced the photocatalytic degradation efficiency of the BiOI/mordenite composite toward caffeic acid photodegradation. MDPI 2022-03-31 /pmc/articles/PMC9000862/ /pubmed/35407279 http://dx.doi.org/10.3390/nano12071161 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Gallegos-Alcaíno, Alejandra Robles-Araya, Nathaly Avalos, Camila Alfonso-Alvarez, Alexander Rodríguez, Carlos A. Valdés, Héctor Sánchez-Flores, Norma A. Durán-Alvarez, Juan C. Bizarro, Monserrat Romero-Salguero, Francisco J. Mera, Adriana C. Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater |
title | Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater |
title_full | Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater |
title_fullStr | Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater |
title_full_unstemmed | Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater |
title_short | Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater |
title_sort | synthesis of bioi/mordenite composites for photocatalytic treatment of organic pollutants present in agro-industrial wastewater |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000862/ https://www.ncbi.nlm.nih.gov/pubmed/35407279 http://dx.doi.org/10.3390/nano12071161 |
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