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Bibi M, Rashid J, Siddiqa A, Xu M. The mechanism and reaction kinetics of visible light active bismuth oxide deposited on titanium vanadium oxide for aqueous diclofenac photocatalysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:23228-23246. [PMID: 38413524 DOI: 10.1007/s11356-024-32477-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/10/2024] [Indexed: 02/29/2024]
Abstract
Non-uniform, non-spherical bismuth oxide deposited on titanium vanadium oxide (3%-BVT1) was successfully synthesized via co-precipitation method and assessed for visible light degradation of aqueous diclofenac. The synthesized photocatalysts were characterized using X-ray diffraction, diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, and high-resolution transmission electron microscopy. Up to 80.7% diclofenac degradation was observed with a significant increment in reaction rate compared to commercially available Degussa P25 (kapp = 0.0013 → 0.0083 min-1) achieved within 3 h treatment time under optimized parameters of diclofenac concentration (10 mg L-1), catalyst loading (0.1 g L-1), and pH (5). The enhanced photocatalysis could be due to electron-hole separation and contribution of powerful oxidative species •OH > O2•- > h+ > > e-. The recyclability experiments indicate that 3%-BVT1 retained its efficiency up to 74.1% over five reaction cycles. Gas chromatography-mass spectrometry analysis indicated the formation of several transformation products during the degradation pathway. The studies of interfering ions depicted mild interference by sulfates, while interference by phosphates and nitrates was negligible during photocatalytic process, i.e., 70, 78.01, and 78.43% for the selected concentrations of 50, 25, and 40 mg L-1 as per their maximum concentrations detected in the natural wastewaters. Thus, 3%-BVT1 is a potential versatile candidate to treat various organic pollutants including pharmaceuticals.
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Affiliation(s)
- Mehmooda Bibi
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Jamshaid Rashid
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan.
- BNU-HKUST Laboratory for Green Innovation, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai, 519087, China.
| | - Asima Siddiqa
- National Centre for Physics, Quaid-I-Azam University Complex, Islamabad, 45320, Pakistan
| | - Ming Xu
- BNU-HKUST Laboratory for Green Innovation, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai, 519087, China
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Vardanyan A, Agback T, Golovko O, Diétre Q, Seisenbaeva GA. Natural Silicates Encapsulated Enzymes as Green Biocatalysts for Degradation of Pharmaceuticals. ACS ES&T WATER 2024; 4:751-760. [PMID: 38356929 PMCID: PMC10862536 DOI: 10.1021/acsestwater.3c00811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 02/16/2024]
Abstract
Biocatalytic degradation with the use of enzymes has gained great attention in the past few years due to its advantages of high efficiency and environmental friendliness. Novel, cost-effective, and green nanoadsorbents were produced in this study, using natural silicates as an enzyme host matrix for core-shell immobilization technique. With the natural silicate as a core and silica layer as a shell, it was possible to encapsulate two different enzymes: horseradish peroxidase (HRP) and laccase, for removal and degradation of three pharmaceuticals: diclofenac (DFC), carbamazepine (CBZ), and paracetamol (PC). The biocatalysts demonstrated high oxidation rates for the selected pollutants. In particular HRP immobilized fly ash and perlite degraded DFC and PC completely during 3 days of interaction and also showed high degradation rates for CBZ. Immobilized laccase was successful in PC degradation, where up to 70-80% degradation of the compounds with aromatic rings was reported by NMR measurements for a high drug concentration of 10 μg/mL. The immobilization method played a significant role in this process by providing stability and protection for the enzymes over 3 weeks. Furthermore, the enzymes acted differently in the three chosen supports due to their complex chemical composition, which could have an effect on the overall enzyme activity.
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Affiliation(s)
- Ani Vardanyan
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, P.O. Box 7015, Uppsala 75007, Sweden
| | - Tatiana Agback
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, P.O. Box 7015, Uppsala 75007, Sweden
| | - Oksana Golovko
- Department
of Aquatic Sciences and Assessment, Swedish
University of Agricultural Sciences,
P.O. Box 7050, Uppsala 75007, Sweden
| | - Quentin Diétre
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, P.O. Box 7015, Uppsala 75007, Sweden
| | - Gulaim A. Seisenbaeva
- Department
of Molecular Sciences, Swedish University
of Agricultural Sciences, P.O. Box 7015, Uppsala 75007, Sweden
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Roshtkhari MBM, Entezari MH. Graphite/carbon-doped TiO 2 nanocomposite synthesized by ultrasound for the degradation of diclofenac. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:15105-15125. [PMID: 38289555 DOI: 10.1007/s11356-024-32182-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 01/21/2024] [Indexed: 02/24/2024]
Abstract
Graphite/C-doped TiO2 nanocomposite was synthesized at room temperature using a simple, impressive, and indirect sonication (20 kHz) by the cup horn system. Tetrabutyltitanate as the precursor of titanium and graphite (G) as the carbon source was used in the preparation of nanocomposite as a photocatalyst. The molar ratio of G/TiO2 as a key parameter was investigated in the synthesis of G/C-doped TiO2. The obtained materials were widely characterized using XRD, SEM, TEM, FTIR, XPS, and UV-Vis diffuse reflectance techniques. The UV-Vis diffuse reflectance spectroscopy results showed that the edge of light absorption of nanocomposite was distinctly red-shifted to the visible area via carbon doping. The XPS outcomes acknowledged the existence of the C, Ti, and O in the photocatalyst. The composite showed an enhancement in the dissociation efficiency of photoinduced charge carriers through the doping process. The photocatalytic activity of the synthesized nanocomposite was checked with diclofenac (DCF) as a pharmaceutical contaminant. The results displayed that G/C-doped TiO2 represented better photocatalytic performance for DCF than TiO2. This was due to the excellent crystallization, intense absorption of visible light, and the impressive separation of photoinduced charge carriers. Various active species such as •OH, •O2¯, h+, and H2O2 play a role in the degradation of DFC. Therefore, different scavengers were used and the role of each one in degradation was investigated. According to the obtained results, •O2¯ radical showed a major role in the photocatalytic process. This work not only proposes a deep insight into the photosensitization-like mechanism by using G-based materials but also develops new photocatalysts for the removal of emerging organic pollutants from waters using sunlight as available cheap energy.
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Affiliation(s)
| | - Mohammad Hassan Entezari
- Sonochemical Research Center, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
- Environmental Chemistry Research Center, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
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Hemkumar K, Ananthi P, Pius A. Fabrication of UiO-66/GCN, a Hybrid Photocatalyst, for Effective Degradation of Ciprofloxacin, Toxicity Estimation, and Its Antibacterial Activity. Chem Res Toxicol 2024; 37:72-80. [PMID: 38176075 DOI: 10.1021/acs.chemrestox.3c00313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Fabrication of a metal-organic framework-based photocatalyst has been gaining much interest due to its higher surface area and reasonable band gap, enhancing its photocatalytic activity. This study attempted a facile synthesis of the hybrid photocatalyst UiO-66 doped with graphitic carbon nitride (GCN) by a simple solvothermal method. This composite minimized the drawback related to photogenerated charge transfer and recombination and helped the absorption of visible light. The material was investigated by using various instrumental techniques. In this work, ciprofloxacin (CIP), a fluoroquinolone drug, was chosen as a target micropollutant, and a photodegradation experiment was carried out by using UiO-66, GCN, and UiO-66/GCN under a visible light source, which exhibited 81.85, 69.48, and 93.60% of degradation, respectively. Finally, liquid chromatography mass spectrometry analysis and theoretical computation were carried out to identify the CIP degradation mechanism, and T.E.S.T. software was used to investigate the toxicity of the intermediate products. Apart from photocatalytic activity, the prepared material was also tested for its antibacterial properties against Staphylococcus aureus and Escherichia coli.
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Affiliation(s)
- K Hemkumar
- Department of Chemistry, The Gandhigram Rural Institute─Deemed to be University Gandhigram, Dindigul, Tamil Nadu 624 302, India
| | - P Ananthi
- Department of Chemistry, The Gandhigram Rural Institute─Deemed to be University Gandhigram, Dindigul, Tamil Nadu 624 302, India
| | - Anitha Pius
- Department of Chemistry, The Gandhigram Rural Institute─Deemed to be University Gandhigram, Dindigul, Tamil Nadu 624 302, India
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Gaggero E, López-Muñoz MJ, Paganini MC, Arencibia A, Bertinetti S, Fernández de Paz N, Calza P. Mercury and Organic Pollutants Removal from Aqueous Solutions by Heterogeneous Photocatalysis with ZnO-Based Materials. Molecules 2023; 28:2650. [PMID: 36985622 PMCID: PMC10051193 DOI: 10.3390/molecules28062650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/27/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023] Open
Abstract
The removal of four Contaminants of Emerging Concern, namely bisphenol A, sulfamethoxazole, diclofenac and benzotriazole; two odorous compounds, geosmin and 2-methylisoborneol, frequently detected in recirculating aquaculture systems; and Hg(II) was investigated using ZnO-based materials doped or co-doped with Ce and Cu under simulated solar radiation. Photocatalysts were synthetized via a hydrothermal route and their efficiency was assessed by changing some operational parameters in different water matrices of increasing complexity. The mixture of contaminants was successfully degraded in just 1 h, while the complete mineralization was achieved in a few hours; experiments performed in an actual aquaculture water confirmed the efficiency and broad versatility of the synthesized materials.
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Affiliation(s)
- Elisa Gaggero
- Department of Chemistry, Università degli Studi di Torino, 10125 Torino, Italy
| | - María José López-Muñoz
- Departamento de Tecnología Química y Ambiental, ESCET, Universidad Rey Juan Carlos, 28933 Móstoles, Madrid, Spain
| | | | - Amaya Arencibia
- Departamento de Tecnología Química, Energética y Mecánica, ESCET, Universidad Rey Juan Carlos, 28933 Móstoles, Madrid, Spain
| | - Stefano Bertinetti
- Department of Chemistry, Università degli Studi di Torino, 10125 Torino, Italy
| | | | - Paola Calza
- Department of Chemistry, Università degli Studi di Torino, 10125 Torino, Italy
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Tian W, You Y, Sun X, Wang L, Wang L, Wang S, Ai C, Song S. H2O2-TiO2 photocatalytic degradation of chondroitin sulfate and in vivo absorption and excertion of its product. Carbohydr Polym 2022; 301:120295. [DOI: 10.1016/j.carbpol.2022.120295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/11/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022]
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Sigcha-Pallo C, Peralta-Hernández JM, Alulema-Pullupaxi P, Carrera P, Fernández L, Pozo P, Espinoza-Montero PJ. Photoelectrocatalytic degradation of diclofenac with a boron-doped diamond electrode modified with titanium dioxide as a photoanode. ENVIRONMENTAL RESEARCH 2022; 212:113362. [PMID: 35525294 DOI: 10.1016/j.envres.2022.113362] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 06/14/2023]
Abstract
The electrophoretic deposition of titanium dioxide (TiO2) nanoparticles (Degussa P25) onto a boron-doped diamond (BDD) substrate was carried out to produce a photoanode (TiO2/BDD) to apply in the degradation and mineralization of sodium diclofenac (DCF-Na) in an aqueous medium using photoelectrocatalysis (PEC). This study was divided into three stages: i) photoanode production through electrophoretic deposition using three suspensions (1.25%, 2.5%, 5.0% w/v) of TiO2 nanoparticles, applying 4.8 V for 15 and 20 s; ii) characterization of the TiO2/BDD photoanode using scanning electron microscopy and cyclic voltammetry response with the [Fe(CN)6]3-/4- redox system; iii) degradation of DCF-Na (25 mg L-1) through electrochemical oxidation (EO) on BDD and PEC on TiO2/BDD under dark and UVC-light conditions. The degradation of DCF-Na was evaluated using high-performance liquid chromatography and UV-Vis spectroscopy, and its mineralization measured using total organic carbon and chemical oxygen demand. The results showed that after 2 h, DCF-Na degradation and mineralization reached 98.5% and 80.1%, respectively, through PEC on the TiO2/BDD photoanode at 2.2 mA cm-2 under UVC illumination, while through EO on BDD applying 4.4 mA cm-2, degradation and mineralization reached 85.6% and 76.1%, respectively. This difference occurred because of the optimal electrophoretic formation of a TiO2 film with a 9.17 μm thickness on the BDD (2.5% w/v TiO2, time 15 s, 4.8 V), which improved the electrocatalysis and oxidative capacity of the TiO2/BDD photoanode. Additionally, PEC showed a lower specific energy consumption (1.55 kWh m-3). Thus, the use of nanostructured TiO2 films deposited on BDD is an innovative photoanode alternative for the photoelectrocatalytic degradation of DCF-Na, which substantially improves the degradation capacity of bare BDD.
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Affiliation(s)
- Carol Sigcha-Pallo
- Pontificia Universidad Católica Del Ecuador, Escuela de Ciencias Químicas, Avenida 12 de Octubre y Roca, Quito, 170525, Ecuador; Escuela Politécnica Nacional, Departamento de Ingeniería Civil y Ambiental, Ladrón de Guevara E11-253, Apartado Postal: 17-01-2759, Quito, Ecuador
| | - Juan M Peralta-Hernández
- Universidad de Guanajuato, Departamento de Química, División de Ciencias Naturales y Exactas, Cerro de La Venda S/n, Pueblito de Rocha, Guanajuato, 36040, Mexico
| | - Paulina Alulema-Pullupaxi
- Pontificia Universidad Católica Del Ecuador, Escuela de Ciencias Químicas, Avenida 12 de Octubre y Roca, Quito, 170525, Ecuador
| | | | - Lenys Fernández
- Pontificia Universidad Católica Del Ecuador, Escuela de Ciencias Químicas, Avenida 12 de Octubre y Roca, Quito, 170525, Ecuador
| | - Pablo Pozo
- Pontificia Universidad Católica Del Ecuador, Escuela de Ciencias Químicas, Avenida 12 de Octubre y Roca, Quito, 170525, Ecuador
| | - Patricio J Espinoza-Montero
- Pontificia Universidad Católica Del Ecuador, Escuela de Ciencias Químicas, Avenida 12 de Octubre y Roca, Quito, 170525, Ecuador.
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Acosta I, Moctezuma E, López de la O K, Leyva E, Zermeño B. Photocatalytic Degradation of High Concentration Aqueous Solutions of Ketoprofen: Adsorption, Reaction Kinetic and Product Studies. Top Catal 2022. [DOI: 10.1007/s11244-022-01653-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Preparation of high performance superhydrophobic PVDF-PbO2-ZrO2 composite electrode and its application in the degradation of paracetamol and industrial oily wastewater. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116231] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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10
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Muelas-Ramos V, Sampaio MJ, Silva CG, Bedia J, Rodriguez JJ, Faria JL, Belver C. Degradation of diclofenac in water under LED irradiation using combined g-C 3N 4/NH 2-MIL-125 photocatalysts. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126199. [PMID: 34492963 DOI: 10.1016/j.jhazmat.2021.126199] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Abstract
This study reports the photocatalytic degradation of diclofenac by hybrid materials prepared by combination of graphitic carbon nitride (g-C3N4) and titanium-metal organic framework (NH2-MIL-125), in different mass proportions (MOF:C3N4 of 25:75, 50:50 and 75:25). The hybrid materials were fully characterized, and their properties compared to those of the individual components, whose presence was confirmed by XRD. The porous structure was the result of the highly microporous character of the MOF and the non-porous one of g-C3N4. The band gap values were very close to that of MOF component. Photoluminescence measurements suggested an increase on the recombination rate associated to the presence of g-C3N4. Photodegradation tests of diclofenac (10 mg·L-1) were performed under UV LED irradiation at 384 nm. The hybrid materials showed higher photocatalytic activity than the individual components, suggesting the occurrence of some synergistic effect. The photocatalyst with a MOF:g-C3N4 ratio of 50:50 yielded the highest conversion rate, allowing complete disappearance of diclofenac in 2 h. Experiments with scavengers showed that superoxide radicals and holes played a major role in the photocatalytic process photodegradation, being that of hydroxyl radicals less significant. From the identification of by-products species, a degradation pathway was proposed for the degradation of diclofenac under the experimental operating conditions.
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Affiliation(s)
- V Muelas-Ramos
- Departamento de Ingeniería Química, Universidad Autónoma de Madrid, Campus Cantoblanco, E-28049 Madrid, Spain.
| | - M J Sampaio
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Departamento de Engenharia Química, Faculdade de Engenharia, Universidad do Porto, Rua Dr. Roberto Frías s/n, 4200-465 Porto, Portugal.
| | - C G Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Departamento de Engenharia Química, Faculdade de Engenharia, Universidad do Porto, Rua Dr. Roberto Frías s/n, 4200-465 Porto, Portugal
| | - J Bedia
- Departamento de Ingeniería Química, Universidad Autónoma de Madrid, Campus Cantoblanco, E-28049 Madrid, Spain
| | - J J Rodriguez
- Departamento de Ingeniería Química, Universidad Autónoma de Madrid, Campus Cantoblanco, E-28049 Madrid, Spain
| | - J L Faria
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Departamento de Engenharia Química, Faculdade de Engenharia, Universidad do Porto, Rua Dr. Roberto Frías s/n, 4200-465 Porto, Portugal
| | - C Belver
- Departamento de Ingeniería Química, Universidad Autónoma de Madrid, Campus Cantoblanco, E-28049 Madrid, Spain
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