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Quddus F, Shah A, Nisar J, Zia MA, Munir S. Neem plant extract-assisted synthesis of CeO 2 nanoparticles for photocatalytic degradation of piroxicam and naproxen. RSC Adv 2023; 13:28121-28130. [PMID: 37746332 PMCID: PMC10517110 DOI: 10.1039/d3ra04185a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/11/2023] [Indexed: 09/26/2023] Open
Abstract
Piroxicam and naproxen are well-known non-steroidal anti-inflammatory drugs that are frequently detected in aquatic environments due to their widespread usage and improper disposal practices. This research investigates the photocatalytic degradation of these drugs by using CeO2 nanoparticles. The nanoparticles were synthesized by using Azadirachta indica plant extract and were characterized through various characterization techniques such as UV-visible spectroscopy, FTIR spectroscopy, SEM, EDX, and XRD. The photocatalytic degradation of piroxicam and naproxen using CeO2 nanoparticles led to the efficient removal of these pharmaceutical drugs in a short time duration with photodegradation efficiencies of 89% and 97% for naproxen and piroxicam, respectively. The photodegradation reaction was found to follow pseudo-order first-order kinetics. The recyclability of the catalyst was also studied for up to six cycles where the degradation efficiency was maintained at 100% till the 2nd cycle and was decreased by 11 and 13% for piroxicam and naproxen respectively after the 6th cycle. The current work focused on the achievement of sustainable development goals (SDGs) for water purification via environmentally benign nanoparticles to remedy water pollution as it is the most prevalent issue in developed and underdeveloped countries throughout the world.
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Affiliation(s)
- Farah Quddus
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Afzal Shah
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Jan Nisar
- National Centre of Excellence in Physical Chemistry, University of Peshawar Peshawar 25120 Pakistan
| | | | - Shamsa Munir
- School of Applied Sciences and Humanities, National University of Technology Islamabad 44000 Pakistan
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2
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Belekbir S, El Azzouzi M, Rodríguez-Lorenzo L, El Hamidi A, Santaballa JA, Canle M. Cobalt Impregnation on Titania Photocatalysts Enhances Vis Phenol Photodegradation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16114134. [PMID: 37297268 DOI: 10.3390/ma16114134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/15/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
One of the main challenges of photocatalysis is to find a stable and effective photocatalyst, that is active and effective under sunlight. Here, we discuss the photocatalytic degradation of phenol as a model pollutant in aqueous solution using NUV-Vis (>366 nm) and UV (254 nm) in the presence of TiO2-P25 impregnated with different concentrations of Co (0.1%, 0.3%, 0.5%, and 1%). The modification of the surface of the photocatalyst was performed by wet impregnation, and the obtained solids were characterized using X-ray diffraction, XPS, SEM, EDS, TEM, N2 physisorption, Raman and UV-Vis DRS, which revealed the structural and morphological stability of the modified material. BET isotherms are type IV, with slit-shaped pores formed by nonrigid aggregate particles and no pore networks and a small H3 loop near the maximum relative pressure. The doped samples show increased crystallite sizes and a lower band gap, extending visible light harvesting. All prepared catalysts showed band gaps in the interval 2.3-2.5 eV. The photocatalytic degradation of aqueous phenol over TiO2-P25 and Co(X%)/TiO2 was monitored using UV-Vis spectrophotometry: Co(0.1%)/TiO2 being the most effective with NUV-Vis irradiation. TOC analysis showed ca. 96% TOC removal with NUV-Vis radiation, while only 23% removal under UV radiation.
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Affiliation(s)
- Soukayna Belekbir
- Laboratory of Nanomaterials, Nanotechnologies and Environment, Center of Materials Science, Faculty of Sciences, Mohammed V University in Rabat, Rabat BP 1014, Morocco
| | - Mohammed El Azzouzi
- Laboratory of Nanomaterials, Nanotechnologies and Environment, Center of Materials Science, Faculty of Sciences, Mohammed V University in Rabat, Rabat BP 1014, Morocco
| | - Laura Rodríguez-Lorenzo
- INL-International Iberian Nanotechnology Laboratory, Water Quality Group, Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Adnane El Hamidi
- Laboratory of Nanomaterials, Nanotechnologies and Environment, Center of Materials Science, Faculty of Sciences, Mohammed V University in Rabat, Rabat BP 1014, Morocco
| | - Juan Arturo Santaballa
- React! Group, Department of Chemistry, Faculty of Sciences & CICA, University of A Coruña, E-15071 A Coruña, Spain
| | - Moisés Canle
- React! Group, Department of Chemistry, Faculty of Sciences & CICA, University of A Coruña, E-15071 A Coruña, Spain
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3
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Orozco-Gonzalez LR, Acosta-Najarro DR, Magaña-Zavala CR, Tavizón-Pozos JA, Cervantes-Cuevas H, Chavez-Esquivel G. Photocatalytic degradation of naproxen using single-doped TiO 2/FTO and co-doped TiO 2-VO 2/FTO thin films synthesized by sonochemistry. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2022. [DOI: 10.1515/ijcre-2022-0109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abstract
Single-doped TiO2/FTO and co-doped TiO2-VO2/FTO thin films were prepared by sonochemistry and spray pyrolysis deposition on FTO substrates. The co-deposition of TiO2-VO2 on FTO significantly changed the morphological, structural, optical, and photocatalytical properties compared to the single-deposition. X-ray diffraction and HRTEM results showed polycrystalline film structures composed of SnO2-tetragonal from FTO, anatase-TiO2, rutile-TiO2, and monoclinic-VO2 phases. The co-deposition technique increases the particle size distribution by approximately two times compared to simple deposition. The single-doped TiO2/FTO thin film had a 15% higher bandgap than the co-doped TiO2-VO2/FTO thin film, and the electrical resistivity calculated from the van der Pauw method was 55.3 MΩ sq−1 for the TiO2-VO2/FTO co-doped thin film, 2.7 times lower than that obtained for the TiO2/FTO thin film. Single-doped TiO2/FTO and co-doped TiO2-VO2/FTO thin films presented pseudo-first-order reactions at pH 6.5, with kinetic constants of 0.026 and 0.015 min−1, respectively. This behavior is related to the production of inactive or less active aggregates by the addition of vanadium during the co-doping process, which led to lattice contraction, which encouraged the formation of the rutile phase rather than the anatase phase. However, the co-doped thin film can modify the metal-insulator transition compared to the single-doped TiO2/FTO thin film. Furthermore, co-deposition decreased the bandgap value by 16% compared to single-deposition thin film. In this sense, co-doped TiO2-VO2/FTO thin films inhibited the recombination of photogenerated carriers and the formation of reactive oxygen species involved in the photocatalytic degradation of naproxen.
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Affiliation(s)
- Luis Rene Orozco-Gonzalez
- Instituto de Física, Universidad Nacional Autónoma de México, Cuidad Universitaria , Coyoacan , Ciudad de México 20364 , México
| | - Dwight Roberto Acosta-Najarro
- Instituto de Física, Universidad Nacional Autónoma de México, Cuidad Universitaria , Coyoacan , Ciudad de México 20364 , México
| | - Carlos Raúl Magaña-Zavala
- Instituto de Física, Universidad Nacional Autónoma de México, Cuidad Universitaria , Coyoacan , Ciudad de México 20364 , México
| | - Jesus Andres Tavizón-Pozos
- Investigadoras e Investigadores por México CONACYT, Área Académica de Química , Universidad Autónoma del Estado de Hidalgo , Carr. Pachuca-Tulancingo km 4.5 , Pachuca 42184 , Hidalgo , México
| | - Humberto Cervantes-Cuevas
- Departamento de Ciencias Básicas, División de Ciencias Básicas e Ingeniería , Universidad Autónoma Metropolitana-Azcapotzalco , Av. San Pablo 180, Col. Reynosa Tamaulipas, Azcapotzalco , Ciudad de México 02200 , México
| | - Gerardo Chavez-Esquivel
- Departamento de Ciencias Básicas, División de Ciencias Básicas e Ingeniería , Universidad Autónoma Metropolitana-Azcapotzalco , Av. San Pablo 180, Col. Reynosa Tamaulipas, Azcapotzalco , Ciudad de México 02200 , México
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4
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Oliveras J, Marcon L, Bastús NG, Puntes V. Functionalization of graphene nanostructures with inorganic nanoparticles and their use for the removal of pharmaceutical pollutants in water. FRONTIERS IN CHEMICAL ENGINEERING 2022. [DOI: 10.3389/fceng.2022.1084035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Emerging pollutants such as pharmaceuticals are of special concern because despite their low environmental concentration, their biological activity can be intense, and they should be prevented to reach uncontrolledly to the environment. A graphene-based hybrid material decorated with Fe3O4 and TiO2 nanoparticles (NPs) has been prepared to effectively remove emerging pollutants as nonsteroidal anti-inflammatory drugs (NSAIDs) Ibuprofen and Diclofenac present in water at low environmental concentrations by a one-step functionalization process following a novel gentle and scalable surfactant depletion approach. Following this methodology, nanoparticles are progressively deprived of their original surfactant in the presence of graphene, leading to the formation of hybrid nanostructures composed of two different types of nanoparticles well dispersed over the graphene nanosheets. Ibuprofen and Diclofenac adsorption kinetics on the composites was investigated via UV-Vis spectroscopy. The as prepared hybrid material possesses high adsorption capacity, superparamagnetic properties, photocatalytic behavior, and good water dispersibility. Thanks to incorporating TiO2 nanoparticles as in situ catalysts, the adsorption performance of composites is restored after use, which could be a promising recycling pathway for the adsorbents in wastewater treatments.
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Kowalkińska M, Sikora K, Łapiński M, Karczewski J, Zielińska-Jurek A. Non-toxic fluorine-doped TiO2 nanocrystals from TiOF2 for facet-dependent naproxen degradation. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Ning R, Pang H, Yan Z, Lu Z, Wang Q, Wu Z, Dai W, Liu L, Li Z, Fan G, Fu X. An innovative S-scheme AgCl/MIL-100(Fe) heterojunction for visible-light-driven degradation of sulfamethazine and mechanism insight. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:129061. [PMID: 35650744 DOI: 10.1016/j.jhazmat.2022.129061] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/18/2022] [Accepted: 04/30/2022] [Indexed: 06/15/2023]
Abstract
The development of high efficient photocatalysts for antibiotics contamination in water remains a severe challenge. In this study, a novel step-scheme (S-scheme) photocatalytic heterojunction nanocomposites were fabricated from integrating AgCl nanoparticles on the MIL-100(Fe) octahedron surface through facile multi-stage stirring strategy. The S-scheme heterojunction structure in AgCl/MIL-100(Fe) (AM) nanocomposite provided a more rational utilization of electrons (e-) and holes (h+), accelerated the carrier transport at the junction interface, and enhanced the overall photocatalytic performance of nanomaterials. The visible-light-driven photocatalysts were used to degrade sulfamethazine (SMZ) which attained a high removal efficiency (99.9%). The reaction mechanisms of SMZ degradation in the AM photocatalytic system were explored by electron spin resonance (ESR) and active species capture experiments, which superoxide radical (•O2-), hydroxyl radical (•OH), and h+ performed as major roles. More importantly, the SMZ degradation pathway and toxicity assessment were proposed. There were four main pathways of SMZ degradation, including the processes of oxidation, hydroxylation, denitrification, and desulfonation. The toxicity of the final products in each pathway was lower than that of the parent according to the toxicity evaluation results. Therefore, this work might provide new insights into the environmentally-friendly photocatalytic processes of S-scheme AM nanocomposites for the efficient degradation of antibiotics pollutants.
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Affiliation(s)
- Rongsheng Ning
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China
| | - Heliang Pang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Zhongsen Yan
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China; Zijin Mining Group Co, Ltd., Fujian, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, PR China.
| | - Zhenyu Lu
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China
| | | | - Zengling Wu
- Zijin Mining Group Co, Ltd., Fujian, PR China
| | - Wenxin Dai
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, PR China
| | - Lingshan Liu
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China
| | - Zhongsheng Li
- Zijin Internationl Holdings Co., Ltd, 572000, Hainan, China
| | - Gongduan Fan
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China.
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, PR China
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Nanomaterials for Photocatalytic Degradations of Analgesic, Mucolytic and Anti-Biotic/Viral/Inflammatory Drugs Widely Used in Controlling SARS-CoV-2. Catalysts 2022. [DOI: 10.3390/catal12060667] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The COVID-19 pandemic has been transformed into one of the main worldwide challenges, in recent years. For controlling symptoms that are caused by this disease (e.g., chills or fever, shortness of breath and/or difficulty in breathing, cough, sore throat, fatigue, headache, muscle aches, the new loss of tastes and/or smells, congestion or runny nose, nausea, vomiting and/or diarrhea), lots of medicines including analgesics, mucolytics, and anti-biotic/viral/inflammatory drugs have been frequently prescribed. As these medicines finally contaminate terrestrial and aquatic habitats by entering surface waterways through pharmaceutical production and excreting trace amounts of waste after human usage, they have negative impacts on wildlife’s health and ecosystem. Residual drugs in water have the potential to harm aquatic creatures and disrupt their food chain as well as the breeding cycle. Therefore, proper degradation of these broadly used medicines is highly crucial. In this work, the use of nanomaterials applicable in photocatalytic degradations of analgesics (e.g., acetaminophen, aspirin, ibuprofen, and naproxen), mucolytics (e.g., ambroxol), antibiotics (e.g., azithromycin and quinolones including hydroxychloroquine and chloroquine phosphate), anti-inflammatory glucocorticoids (e.g., dexamethasone and cortisone acetate), antihistamines (e.g., diphenhydramine), H2 blockers (e.g., famotidine), anthelmintics (e.g., praziquantel), and finally antivirals (e.g., ivermectin, acyclovir, lopinavir/ritonavir, favipiravir, nitazoxanide, and remdesivir) which widely used in controlling/treating the coronavirus have been reviewed and discussed.
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Villajos B, Tolosana-Moranchel Á, Canle M, Farina A, Gascó A, Mesa-Medina S, Faraldos M, Hermosilla D, Bahamonde A. Photocatalytic Degradation of Alachlor over Titania-Reduced Graphene Oxide Nanocomposite: Intrinsic Kinetic Model and Reaction Pathways. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c04304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Beatriz Villajos
- Environmental Catalysis Engineering Group, Instituto de Catálisis y Petroleoquímica, ICP-CSIC, Marie Curie 2, 28049 Madrid, Spain
| | - Álvaro Tolosana-Moranchel
- Nanotechnology and Integrated BioEngineering Centre, School of Engineering, Ulster University, Northern Ireland, BT37 0QB, United Kingdom
| | - Moisés Canle
- React!, Departamento de Química, Facultade de Ciencias & CICA, Universidade da Coruña, A Coruña, E-15071, Spain
| | - Andrea Farina
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano, 20133, Italy
| | - Antonio Gascó
- Department of Forest and Environmental Engineering and Management, Universidad Politécnica de Madrid, Escuela Técnica Superior de Ingeniería de Montes, Forestal y del Medio Natural, José Antonio Novais 10, 28040 Madrid, Spain
| | - Sara Mesa-Medina
- Environmental Catalysis Engineering Group, Instituto de Catálisis y Petroleoquímica, ICP-CSIC, Marie Curie 2, 28049 Madrid, Spain
| | - Marisol Faraldos
- Environmental Catalysis Engineering Group, Instituto de Catálisis y Petroleoquímica, ICP-CSIC, Marie Curie 2, 28049 Madrid, Spain
| | - Daphne Hermosilla
- Department of Forest and Environmental Engineering and Management, Universidad Politécnica de Madrid, Escuela Técnica Superior de Ingeniería de Montes, Forestal y del Medio Natural, José Antonio Novais 10, 28040 Madrid, Spain
- Department of Agricultural and Forest Engineering, University of Valladolid, Escuela de Ingenieria de la Industria Forestal, Agronómica y de la Bioenergía, Campus Duques de Soria, 42005 Soria, Spain
| | - Ana Bahamonde
- Environmental Catalysis Engineering Group, Instituto de Catálisis y Petroleoquímica, ICP-CSIC, Marie Curie 2, 28049 Madrid, Spain
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Miranda MO, Cabral Cavalcanti WE, Barbosa FF, Antonio de Sousa J, Ivan da Silva F, Pergher SBC, Braga TP. Photocatalytic degradation of ibuprofen using titanium oxide: insights into the mechanism and preferential attack of radicals. RSC Adv 2021; 11:27720-27733. [PMID: 35480690 PMCID: PMC9037810 DOI: 10.1039/d1ra04340d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/05/2021] [Indexed: 11/21/2022] Open
Abstract
The present work studied ibuprofen degradation using titanium dioxide as a photocatalyst. Mechanistic aspects were presented and the preferred attack sites by the OH˙ radical on the ibuprofen molecule were detailed, based on experimental and simple theoretical-computational results. Although some previous studies show mechanistic proposals, some aspects still need to be investigated, such as the participation of 4-isobutylacetophenone in the ibuprofen degradation and the preferred regions of attack by OH˙ radicals. The photodegradation was satisfactory using 0.03 g of TiO2 and pH = 5.0, reaching 100% decontamination in 5 min. The zeta potential curve showed the regions of attraction and repulsion between TiO2 and ibuprofen, depending on the pH range and charge of the species, influencing the amount of by-products formed. Different by-products have been identified by GC-MS, such as 4-isobutylacetophenone. Ibuprofen conversion to 4-isobutylacetophenone takes place through decarboxylation reaction followed by oxidation. The proposed mechanism indicates that the degradation of ibuprofen undergoes a series of elementary reactions in solution and on the surface. Three different radicals (OH˙, O2−˙ and OOH˙) are produced in the reaction sequence and contribute strongly to the oxidation and mineralization of ibuprofen and by-products, but the hydroxyl radical has a greater oxidation capacity. The simple study using the DFT approach demonstrated that the OH˙ radical attacks preferentially in the region of the ibuprofen molecule with high electronic density, which is located close to the aromatic ring (C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C bond). The presence of the OH˙ radical was confirmed through a model reaction using salicylic acid as a probe molecule. The degradation of ibuprofen undergoes a series of elementary reactions, generating different radicals which attack preferentially in the region of the ibuprofen with high electron density.![]()
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Affiliation(s)
- Maicon Oliveira Miranda
- Laboratório de Peneiras Moleculares (LABPMOL), Programa de Pós-graduação em Química, Universidade Federal do Rio Grande do Norte (UFRN) Av. Sen. Salgado FIlho, Campus Universitário, Lagoa Nova 59.078-970 Natal RN Brazil +55 84 933422323.,Instituto Federal de Educação, Ciência e Tecnologia do Piauí (IFPI) Rodovia PI 213 Zona Rural 64235-000 Cocal PI Brazil
| | - Wesley Eulálio Cabral Cavalcanti
- Laboratório de Peneiras Moleculares (LABPMOL), Programa de Pós-graduação em Química, Universidade Federal do Rio Grande do Norte (UFRN) Av. Sen. Salgado FIlho, Campus Universitário, Lagoa Nova 59.078-970 Natal RN Brazil +55 84 933422323
| | - Felipe Fernandes Barbosa
- Laboratório de Peneiras Moleculares (LABPMOL), Programa de Pós-graduação em Química, Universidade Federal do Rio Grande do Norte (UFRN) Av. Sen. Salgado FIlho, Campus Universitário, Lagoa Nova 59.078-970 Natal RN Brazil +55 84 933422323
| | - José Antonio de Sousa
- Universidade Federal do Piauí, UFPI, Campus Universitário Ministro Petrônio Portella Ininga 64049-550 Teresina PI Brazil
| | | | - Sibele B C Pergher
- Laboratório de Peneiras Moleculares (LABPMOL), Programa de Pós-graduação em Química, Universidade Federal do Rio Grande do Norte (UFRN) Av. Sen. Salgado FIlho, Campus Universitário, Lagoa Nova 59.078-970 Natal RN Brazil +55 84 933422323
| | - Tiago Pinheiro Braga
- Laboratório de Peneiras Moleculares (LABPMOL), Programa de Pós-graduação em Química, Universidade Federal do Rio Grande do Norte (UFRN) Av. Sen. Salgado FIlho, Campus Universitário, Lagoa Nova 59.078-970 Natal RN Brazil +55 84 933422323
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Belhacova L, Bibova H, Marikova T, Kuchar M, Zouzelka R, Rathousky J. Removal of Ampicillin by Heterogeneous Photocatalysis: Combined Experimental and DFT Study. NANOMATERIALS 2021; 11:nano11081992. [PMID: 34443823 PMCID: PMC8399517 DOI: 10.3390/nano11081992] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 11/23/2022]
Abstract
A long-term exposition of antibiotics represents a serious problem for the environment, especially for human health. Heterogeneous photocatalysis opens a green way for their removal. Here, we correlated the structural-textural properties of TiO2 photocatalysts with their photocatalytic performance in ampicillin abatement. The tested nanoparticles included anatase and rutile and their defined mixtures. The nominal size range varied from 5 to 800 nm, Aeroxide P25 serving as an industrial benchmark reference. The degradation mechanism of photocatalytic ampicillin abatement was studied by employing both experimental (UPLC/MS/MS, hydroxyl radical scavenger) and theoretical (quantum calculations) approaches. Photocatalytic activity increased with the increasing particle size, generally, anatase being more active than rutile. Interestingly, in the dark, the ampicillin concentration decreased as well, especially in the presence of very small nanoparticles. Even if the photolysis of ampicillin was negligible, a very high degree of mineralization of antibiotic was achieved photocatalytically using the smallest nanoparticles of both allotropes and their mixtures. Furthermore, for anatase samples, the reaction rate constant increases with increasing crystallite size, while the degree of mineralization decreases. Importantly, the suggested degradation pathway mechanism determined by DFT modeling was in very good agreement with experimentally detected reaction products.
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Affiliation(s)
- Lenka Belhacova
- Department of Electrochemical Materials, J. Heyrovsky Institute of Physical Chemistry of the CAS, Dolejskova 3, 18223 Prague, Czech Republic;
- Correspondence: (L.B.); (J.R.)
| | - Hana Bibova
- Department of Electrochemical Materials, J. Heyrovsky Institute of Physical Chemistry of the CAS, Dolejskova 3, 18223 Prague, Czech Republic;
| | - Tereza Marikova
- Center for Innovations in the field of Nanomaterials and Nanotechnologies, J. Heyrovsky Institute of Physical Chemistry of the CAS, Dolejskova 3, 18223 Prague, Czech Republic; (T.M.); (R.Z.)
- Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technicka 3, 16628 Prague, Czech Republic;
| | - Martin Kuchar
- Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technicka 3, 16628 Prague, Czech Republic;
| | - Radek Zouzelka
- Center for Innovations in the field of Nanomaterials and Nanotechnologies, J. Heyrovsky Institute of Physical Chemistry of the CAS, Dolejskova 3, 18223 Prague, Czech Republic; (T.M.); (R.Z.)
| | - Jiri Rathousky
- Center for Innovations in the field of Nanomaterials and Nanotechnologies, J. Heyrovsky Institute of Physical Chemistry of the CAS, Dolejskova 3, 18223 Prague, Czech Republic; (T.M.); (R.Z.)
- Correspondence: (L.B.); (J.R.)
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Wu Y, Jin X, Liu Y, Huang S, Wang F, Zheng X, Wei D, Liu H, Chen P, Liu G. Facile synthesis of solar light-driven Z-scheme Ag2CO3/TNS-001 photocatalyst for the effective degradation of naproxen: Mechanisms and degradation pathways. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117598] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Abstract
The natural environment is constantly under threat from man-made pollution. More and more pharmaceuticals are recognized as emerging pollutants due to their growing concentration in the environment. One such chemical is ibuprofen which has been detected in processed sewage. The ineffectiveness of water methods treatment currently used raises the need for new remediation techniques, one of such is photodegradation of pollutants. In the present study, zinc(II) and copper(II) phthalocyanines were grafted onto pure anatase TiO2 nanoparticles (5 and 15 nm) to form photocatalysts for photodecomposition of ibuprofen in water. The nanoparticles were subjected to physicochemical characterization, including: thermogravimetric analysis, X-ray powder diffraction, X-ray photoelectron spectroscopy, Brunauer–Emmett–Teller surface area analysis and particle size measurements. In addition, they were assessed by means of electron spin resonance spectroscopy to evaluate the free radical generation. The materials were also tested for their photocatalytic activity under either UV (365 nm) or visible light (665 nm) irradiation. After 6 h of irradiation, almost complete removal of ibuprofen under UV light was observed, as assessed by liquid chromatography coupled to mass spectrometry. The reaction kinetics calculations revealed that the copper(II) phthalocyanine-containing nanoparticles were acting at a faster rate than those with zinc(II) derivative. The solutions after the photoremediation experiments were subjected to Microtox® acute toxicity analysis.
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Belekbir S, El Azzouzi M, El Hamidi A, Rodríguez-Lorenzo L, Santaballa JA, Canle M. Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO 2. NANOMATERIALS 2020; 10:nano10050996. [PMID: 32455949 PMCID: PMC7279559 DOI: 10.3390/nano10050996] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/10/2020] [Accepted: 05/18/2020] [Indexed: 11/28/2022]
Abstract
Photocatalyzed degradation of phenol in aqueous solution over surface impregnated TiO2 (M = Cu, Cr, V) under UV-Vis (366 nm) and UV (254 nm) irradiation is described. Nanosized photocatalyts were prepared from TiO2-P25 by wet impregnation, and characterized by X-ray diffraction, X-ray fluorescence, transmission electron microscopy, UV-Vis diffuse reflectance spectroscopy, Raman spectroscopy, and adsorption studies. No oxide phases of the metal dopants were found, although their presence in the TiO2-P25 lattice induces tensile strain in Cu-impregnated TiO2-P25, whereas compressive strain in Cr- and V-impregnated TiO2-P25. Experimental evidences support chemical and mechanical stability of the photocatalysts. Type IV N2 adsorption–desorption isotherms, with a small H3 loop near the maximum relative pressure were observed. Metal surface impregnated photocatalysts are mesoporous with a similar surface roughness, and a narrow pore distribution around ca. 25 Å. They were chemically stable, showing no metal lixiviation. Their photocatalytic activity was followed by UV-Vis spectroscopy and HPLC–UV. A first order kinetic model appropriately fitted the experimental data. The fastest phenol degradation was obtained with M (0.1%)/TiO2-P25, the reactivity order being Cu > V >> Cr > TiO2-P25 under 366 nm irradiation, while TiO2-P25 > Cu > V > Cr, when using 254 nm radiation. TOC removal under 366 nm irradiation for 300 min showed almost quantitative mineralization for all tested materials, while 254 nm irradiation for 60 min led to maximal TOC removal (ca. 30%). Photoproducts and intermediate photoproducts were identified by HPLC–MS, and appropriate reaction pathways are proposed. The energy efficiency of the process was analysed, showing UV lamps are superior to UVA lamps, and that the efficiency of the surface impregnated catalyst varies in the order Cu > V > Cr.
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Affiliation(s)
- S. Belekbir
- Laboratoire de Physico-Chimie des Matériaux et Nanomateriaux, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, Rabat BP 1014, Morocco; (S.B.); (M.E.A.); (A.E.H.)
| | - M. El Azzouzi
- Laboratoire de Physico-Chimie des Matériaux et Nanomateriaux, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, Rabat BP 1014, Morocco; (S.B.); (M.E.A.); (A.E.H.)
| | - A. El Hamidi
- Laboratoire de Physico-Chimie des Matériaux et Nanomateriaux, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, Rabat BP 1014, Morocco; (S.B.); (M.E.A.); (A.E.H.)
| | | | - J. Arturo Santaballa
- Grupo React!, Departamento de Química, Facultade de Ciencias & CICA, Universidade da Coruña, E-15071 A Coruña, Spain;
| | - M. Canle
- Grupo React!, Departamento de Química, Facultade de Ciencias & CICA, Universidade da Coruña, E-15071 A Coruña, Spain;
- Correspondence:
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14
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Enhanced Photocatalytic Degradation of the Imidazolinone Herbicide Imazapyr upon UV/Vis Irradiation in the Presence of Ca xMnO y-TiO 2 Hetero-Nanostructures: Degradation Pathways and Reaction Intermediates. NANOMATERIALS 2020; 10:nano10050896. [PMID: 32397078 PMCID: PMC7279346 DOI: 10.3390/nano10050896] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/29/2020] [Accepted: 04/19/2020] [Indexed: 11/17/2022]
Abstract
The determination of reaction pathways and identification of products of pollutants degradation is central to photocatalytic environmental remediation. This work focuses on the photocatalytic degradation of the herbicide Imazapyr (2-(4-methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl) pyridine-3-carboxylic acid) under UV-Vis and visible-only irradiation of aqueous suspensions of CaxMnOy-TiO2, and on the identification of the corresponding degradation pathways and reaction intermediates. CaxMnOy-TiO2 was formed by mixing CaxMnOy and TiO2 by mechanical grinding followed by annealing at 500 °C. A complete structural characterization of CaxMnOy-TiO2 was carried out. The photocatalytic activity of the hetero-nanostructures was determined using phenol and Imazapyr herbicide as model pollutants in a stirred tank reactor under UV-Vis and visible-only irradiation. Using equivalent loadings, CaxMnOy-TiO2 showed a higher rate (10.6 μM·h−1) as compared to unmodified TiO2 (7.4 μM·h−1) for Imazapyr degradation under UV-Vis irradiation. The mineralization rate was 4.07 µM·h−1 for CaxMnOy-TiO2 and 1.21 μM·h−1 for TiO2. In the CaxMnOy-TiO2 system, the concentration of intermediate products reached a maximum at 180 min of irradiation that then decreased to a half in 120 min. For unmodified TiO2, the intermediates continuously increased with irradiation time with no decrease observed in their concentration. The enhanced efficiency of the CaxMnOy-TiO2 for the complete degradation of the Imazapyr and intermediates is attributed to an increased adsorption of polar species on the surface of CaxMnOy. Based on LC-MS, photocatalytic degradation pathways for Imazapyr under UV-Vis irradiation have been proposed. Some photocatalytic degradation was obtained under visible-only irradiation for CaxMnOy-TiO2. Hydroxyl radicals were found to be main reactive oxygen species responsible for the photocatalytic degradation through radical scavenger investigations.
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15
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Wu Y, Wang F, Jin X, Zheng X, Wang Y, Wei D, Zhang Q, Feng Y, Xie Z, Chen P, Liu H, Liu G. Highly active metal-free carbon dots/g-C 3N 4 hollow porous nanospheres for solar-light-driven PPCPs remediation: Mechanism insights, kinetics and effects of natural water matrices. WATER RESEARCH 2020; 172:115492. [PMID: 31945649 DOI: 10.1016/j.watres.2020.115492] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
Pharmaceuticals and personal care products (PPCPs) are increasingly being scrutinized by the scientific community due to their environmental persistence. Therefore, the development of novel environmentally compatible and energy-efficient technologies for their removal is highly anticipated. In this work, a novel metal-free photocatalytic nanoreactor was successfully synthesized by anchoring carbon dots to hollow carbon nitride nanospheres (HCNS/CDs). The unique structure of these hollow nanospherical HCNS/CDs hybrids endowed them with a high population of reactive sites, while enhancing optical absorption due to internal light reflection. Simultaneously, the CDs served as "artificial antennas" to absorb and convert photons with low energy, due to their superior up-converting properties. Consequently, the HCNS/CDs demonstrated excellent photodegradation activities for the degradation of PPCPs under broad-spectrum irradiation. Remarkedly, 10 mg/L of naproxen (NPX) was completely degraded following 5 min of natural solar irradiation. It was further revealed that the O2•- played a significant role during the photocatalytic process, which could lead to the decomposition of NPX. The effects of natural water matrices and the degradation of trace PPCPs further supported that this photocatalytic system may be efficaciously applied for the remediation of PPCPs contamination in ambient waterways.
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Affiliation(s)
- Yuliang Wu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Fengliang Wang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Xiaoyu Jin
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Xiaoshan Zheng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yingfei Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China
| | - Dandan Wei
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qianxin Zhang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yiping Feng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zhijie Xie
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ping Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China; School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, Tsinghua University, Beijing, 100084, China
| | - Haijin Liu
- Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, China
| | - Guoguang Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
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16
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Wu G, Geng J, Li S, Li J, Fu Y, Xu K, Ren H, Zhang X. Abiotic and biotic processes of diclofenac in enriched nitrifying sludge: Kinetics, transformation products and reactions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 683:80-88. [PMID: 31136967 DOI: 10.1016/j.scitotenv.2019.05.216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/14/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
Diclofenac (DCF), as an emerging contaminant in aquatic environments, has sparked increasing concerns about its impact on the environment. Nitrification in wastewater treatment processing has removed DCF to a large extent. However, the removal characteristics and mechanisms of DCF in the nitrification process are still poorly understood. In this study, enriched nitrifying sludge was used to investigate the transformation of DCF during the nitrification process. Elimination of DCF caused by volatilization, hydrolyzation and adsorption was limited. Abiotic nitration removal was confirmed as significant in enriched nitrifying sludge at a low pH and high nitrite concentration. Free nitrite acid was proposed as the reaction species participating in the DCF transformation process, and a regression equation was developed to predict the contribution of abiotic nitration on DCF removal in enriched nitrifying sludge. By slowly and continuously adding an ammonia stock solution and controlling the pH, we avoided the effect of abiotic nitration removal, and DCF biodegradation was positively correlated to specific ammonium oxidation rates (SAORs). The removal of DCF fit the first order kinetic model (R2 = 0.8285, p < 0.05) with an SAOR of 0.25 mg NH4+-N/(gMLSS·min). The high removal rate constant of k (0.1286 L/(gMLSS·h)) and short half-life (2.48 h) revealed the strong capability of nitrifying bacteria to transform DCF. Nine DCF transformation products were identified and three of them were quantified in the transformation process. The formation of kinetic profile 4-OH-DCF, 5-OH-DCF and DCF-Benzoic acid (DCF-BA) implied that hydroxylation may be the first reaction of DCF and DCF-BA may be a terminal product that resists further degradation. The postulated reactions concerning the transformation of DCF were hydroxylation, lactam formation and oxidation. Accordingly, a detailed degradation pathway was presented.
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Affiliation(s)
- Gang Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China
| | - Jinju Geng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China.
| | - Shengnan Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China
| | - Juechun Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China
| | - Yingying Fu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China
| | - Ke Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China
| | - Xuxiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, Jiangsu, PR China
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17
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Evidence of non-photo-Fenton degradation of ibuprofen upon UVA irradiation in the presence of Fe(III)/malonate. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111976] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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18
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Ulyankina A, Avramenko M, Kusnetsov D, Firestein K, Zhigunov D, Smirnova N. Electrochemical Synthesis of TiO 2
under Pulse Alternating Current: Effect of Thermal Treatment on the Photocatalytic Activity. ChemistrySelect 2019. [DOI: 10.1002/slct.201803367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Ulyankina
- Technology Department; Platov South-Russian State Polytechnic University (NPI); Novocherkassk Russian Federation
| | - Marina Avramenko
- Department of Nanotechnology; Southern Federal University; Rostov-on-Don Russian Federation
| | - Denis Kusnetsov
- College of New Materials and Nanotechnologies; National University of Science and Technology MISIS; Moscow Russian Federation
| | - Konstantin Firestein
- Science and Engineering Faculty; Queensland University of Technology (QUT); Brisbane Australia
| | - Denis Zhigunov
- Center for Photonics and Quantum Materials; Skolkovo Institute of Science and Technology; Moscow Russian Federation
| | - Nina Smirnova
- Technology Department; Platov South-Russian State Polytechnic University (NPI); Novocherkassk Russian Federation
- College of New Materials and Nanotechnologies; National University of Science and Technology MISIS; Moscow Russian Federation
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