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de Moraes NP, Pereira RA, da Silva TVC, da Silva BHB, de Assis GP, Campos TMB, Thim GP, de Vasconcelos Lanza MR, de Freitas L, Rodrigues LA. Cross-linked cellulose beads as an eco-friendly support for ZnO/SnO 2/carbon xerogel hybrid photocatalyst: Exploring the synergy between adsorption and photocatalysis under simulated sunlight. Int J Biol Macromol 2024; 254:127826. [PMID: 37926324 DOI: 10.1016/j.ijbiomac.2023.127826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/03/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023]
Abstract
This paper explores the application of cross-linked cellulose beads as a sustainable and cost-effective support for the ZnO/SnO2/carbon xerogel hybrid photocatalyst. The application of the developed photocatalytic beads, named CB-Cat, was directed at a simultaneous adsorption/photocatalysis process, which was carried out under simulated sunlight. The characterization of the CB-Cat indicated a good dispersion of the photocatalyst of choice throughout the cellulose matrix, confirming its incorporation into the cellulose beads. Furthermore, it is possible to observe the presence of the photocatalyst on the surface of the CB-Cat, confirming its availability for the photonic activation process. The results showed that the simultaneous adsorption/photocatalysis process was optimal for enhancing the efficiency of methylene blue (MB) removal, especially when compared to the isolated adsorption process. Additionally, the regeneration of the CB-Cat between cycles was favorable toward the maintenance of the MB removal efficiency, as the process carried out without regeneration displayed significant efficiency drops between cycles. Finally, the mechanism evaluation evidenced that hydroxyl and superoxide radicals were the main responsible for the MB photocatalytic degradation during illumination with simulated sunlight.
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Affiliation(s)
- Nicolas Perciani de Moraes
- São Carlos Institute of Chemistry, University of São Paulo, Av. Trab. São Carlense, 400 - Parque Arnold Schimidt, São Carlos, SP 13566-590, Brazil
| | - Renan Amarante Pereira
- Lorena School of Engineering- EEL/USP, Estrada Municipal do Campinho S/N, CEP 12602-810 Lorena, São Paulo, Brazil
| | | | | | - Gabrielle Policarpo de Assis
- Lorena School of Engineering- EEL/USP, Estrada Municipal do Campinho S/N, CEP 12602-810 Lorena, São Paulo, Brazil
| | - Tiago Moreira Bastos Campos
- Aeronautics Institute of Technology - ITA/CTA, Praça Mal. Eduardo Gomes 50, CEP 12228-900, São José dos Campos, São Paulo, Brazil
| | - Gilmar Patrocínio Thim
- Aeronautics Institute of Technology - ITA/CTA, Praça Mal. Eduardo Gomes 50, CEP 12228-900, São José dos Campos, São Paulo, Brazil
| | - Marcos Roberto de Vasconcelos Lanza
- São Carlos Institute of Chemistry, University of São Paulo, Av. Trab. São Carlense, 400 - Parque Arnold Schimidt, São Carlos, SP 13566-590, Brazil
| | - Larissa de Freitas
- Lorena School of Engineering- EEL/USP, Estrada Municipal do Campinho S/N, CEP 12602-810 Lorena, São Paulo, Brazil
| | - Liana Alvares Rodrigues
- Lorena School of Engineering- EEL/USP, Estrada Municipal do Campinho S/N, CEP 12602-810 Lorena, São Paulo, Brazil.
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2
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Abid M, Makhoul E, Tanos F, Iatsunskyi I, Coy E, Lesage G, Cretin M, Cornu D, Ben Haj Amara A, Bechelany M. N-Doped HNT/TiO 2 Nanocomposite by Electrospinning for Acetaminophen Degradation. MEMBRANES 2023; 13:membranes13020204. [PMID: 36837707 PMCID: PMC9967914 DOI: 10.3390/membranes13020204] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/13/2023] [Accepted: 02/03/2023] [Indexed: 05/27/2023]
Abstract
In this study, we combined electrospinning of a large amount of halloysite (HNT, 95%) with nitriding to produce N-HNT-TiO2 composite nanofibers (N-H95T5 hereafter) to be used for acetaminophen (ACT) photodegradation. Investigation of the morphological and structural properties of the obtained materials did not highlight any significant difference in their morphological features and confirmed that nitrogen was evenly distributed in the samples. Photocatalytic tests under visible light showed that acetaminophen photodegraded faster in the presence of samples with nitrogen (N-H95T5) than without (H95T5 nanofibers). Moreover, the N-H95T5 nanocomposite photocatalytic activity did not change after repeated utilization (five cycles). The addition of scavengers during photocatalytic tests showed the key implication of OH•-, O2•- and h+ radicals in acetaminophen degradation. These results indicated that N-H95T5 composite nanofibers could be considered a cheap multifunctional material for photodegradation and could open new prospects for preparing tunable photocatalysts.
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Affiliation(s)
- Mahmoud Abid
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
- Laboratory of Resources, Materials & Ecosystem (RME), Faculty of Sciences of Bizerte, University of Carthage, Zarzouna 7021, Tunisia
| | - Elissa Makhoul
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
| | - Fida Tanos
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
| | - Igor Iatsunskyi
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland
| | - Emerson Coy
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland
| | - Geoffroy Lesage
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
| | - Marc Cretin
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
| | - David Cornu
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
| | - Abdesslem Ben Haj Amara
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM, UMR 5635, Univ. Montpellier, ENSCM, CNRS, 34730 Montpellier, France
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3
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Abid M, Sayegh S, Iatsunskyi I, Coy E, Lesage G, Ramanavicius A, Ben Haj Amara A, Bechelany M. Design of halloysite-based nanocomposites by electrospinning for water treatment. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Evans SJ, Lawrence RL, Ilett M, Burgum MJ, Meldrum K, Hondow N, Jenkins GJ, Clift MJD, Doak SH. Industrial-relevant TiO 2 types do not promote cytotoxicity in the A549 or TK6 cell lines regardless of cell specific interaction. Toxicol In Vitro 2022; 83:105415. [PMID: 35752104 DOI: 10.1016/j.tiv.2022.105415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 03/07/2022] [Accepted: 06/04/2022] [Indexed: 01/09/2023]
Abstract
Due to the expansive application of TiO2 and its variance in physico-chemical characteristics, the toxicological profile of TiO2, in all its various forms, requires evaluation. This study aimed to assess the hazard of five TiO2 particle-types in relation to their cytotoxic profile correlated to their cellular interaction, specifically in human lymphoblast (TK6) and type-II alveolar epithelial (A549) cells. Treatment with the test materials was undertaken at a concentration range of 1-100 μg/cm2 over 24 and 72 h exposure. TiO2 interaction with both cell types was visualised by transmission electron microscopy, supported by energy-dispersive X-ray. None of the TiO2 materials tested promoted cytotoxicity in either cell type over the concentration and time range studied. All materials were observed to interact with the A549 cells and were further noted to be internalised following 24 h exposure. In contrast, only the pigmentary rutile was internalised by TK6 lymphoblasts after 24 h exposure. Where uptake was observed there was no evidence, as determined by 2D microscopy techniques, of particle localisation within the nucleus of either cell type. This study indicates that industrially relevant TiO2 particles demonstrate cell interactions that are cell-type dependent and do not induce cytotoxicity at the applied dose range.
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Affiliation(s)
- Stephen J Evans
- In Vitro Toxicology Group, Institute of Life Science, Swansea Univeristy Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Rachel L Lawrence
- In Vitro Toxicology Group, Institute of Life Science, Swansea Univeristy Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Martha Ilett
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
| | - Michael J Burgum
- In Vitro Toxicology Group, Institute of Life Science, Swansea Univeristy Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Kirsty Meldrum
- In Vitro Toxicology Group, Institute of Life Science, Swansea Univeristy Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Nicole Hondow
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
| | - Gareth J Jenkins
- In Vitro Toxicology Group, Institute of Life Science, Swansea Univeristy Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Martin J D Clift
- In Vitro Toxicology Group, Institute of Life Science, Swansea Univeristy Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Shareen H Doak
- In Vitro Toxicology Group, Institute of Life Science, Swansea Univeristy Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK.
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Photoreactor-Initiated Acetaldehyde Conversion Rate of a TiO2-Surface-Treated Alumina Photocatalyst Prepared Using the Sol–Gel Method. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12125796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
In this study, a TiO2–alumina photocatalyst was manufactured by coating a surface-treated alumina substrate with TiO2 sol using the sol–gel method, and the photolysis and conversion of acetaldehyde in the gas phase were evaluated. The effects of acetaldehyde flow rate (i.e., retention time), ultraviolet wavelength, moisture, and catalyst heat-treatment temperature on the conversion of acetaldehyde were investigated. The experiments confirmed that a decrease in flow rate (i.e., increase in retention time), increase in moisture level, and decrease in the ultraviolet wavelength of the light source increased the conversion rate of the gaseous acetaldehyde. Among the three heat-treatment temperatures (450, 650, and 850 °C) used in the catalyst manufacturing process, the catalyst treated at 650 °C had the highest acetaldehyde conversion rate. As a result of its increased acetaldehyde decomposition and photoefficiency, the newly manufactured TiO2–alumina photocatalyst is expected to be used alongside a photoreactor as an air-purifying filter. Furthermore, the photocatalyst surface treatment demonstrated herein can be adopted to fabricate various environmentally friendly materials in the future.
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Metal-Doped Graphitic Carbon Nitride Nanomaterials for Photocatalytic Environmental Applications—A Review. NANOMATERIALS 2022; 12:nano12101754. [PMID: 35630976 PMCID: PMC9146448 DOI: 10.3390/nano12101754] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 12/19/2022]
Abstract
In the current world situation, population and industrial growth have become major problems for energy and environmental concerns. Extremely noxious pollutants such as heavy metal ions, dyes, antibiotics, phenols, and pesticides in water are the main causes behind deprived water quality leading to inadequate access to clean water. In this connection, graphite carbon nitride (GCN or g-C3N4) a nonmetallic polymeric material has been utilized extensively as a visible-light-responsive photocatalyst for a variety of environmental applications. This review focuses on recent developments in the design and photocatalytic applications of metal-doped GCN-based nanomaterials in CO2 photoreduction, water splitting toward hydrogen production, bacterial disinfection, and organic pollutant degradation. Additionally, this review discusses various methods of using GCN-based materials to optimize dye sensitization, metal deposition, ion doping, and their environmental applications.
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