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Suresh S, Kandasamy M, Karthick Kumar S, Pugazhenthiran N. Investigation of Optical Properties and Photovoltaic Performance of Solid-State Dye-Sensitized Solar Cells Comprised of Photoanodes of Titanium Dioxide Nanoparticles Calcinated at Different Temperatures. Results in Chemistry 2023. [DOI: 10.1016/j.rechem.2023.100898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
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Pugazhenthiran N, Sathishkumar P, Albormani O, Murugesan S, Kandasamy M, Selvaraj M, Suresh S, Kumar SK, Contreras D, Váldes H, Mangalaraja RV. Silver nanoparticles modified ZnO nanocatalysts for effective degradation of ceftiofur sodium under UV-vis light illumination. Chemosphere 2023; 313:137515. [PMID: 36495978 DOI: 10.1016/j.chemosphere.2022.137515] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/14/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Light-induced photocatalytic degradation of ceftiofur sodium (CFS) has been assessed in the presence of plasmonic zinc oxide nanostructures (ZnONSTs), like, ZnO nanoparticles, ZnO nanorods (ZnONRs) and ZnO nanoflowers (ZnONFs). Silver nanoparticles (Ag NPs) loaded ZnO nanostructures (Ag-ZnONSTs) are obtained through seed-assisted chemical reaction followed by chemical reduction of silver. The surface modification of ZnO nanostructures by Ag NPs effectually altered their optical properties. Further, the surface plasmonic effect of Ag NPs facilitates visible light absorption by ZnONSTs and improved the photogenerated electron and hole separation, which makes the ZnONSTs a more active photocatalyst than TiO2 (P25) nanoparticles. Especially, Ag-ZnONRs showed higher CFS oxidation rate constant (k' = 4.6 × 10-4 s-1) when compared to Ag-ZnONFs (k' = 2.8 × 10-4 s-1) and Ag-ZnONPs (k' = 2.5 × 10-4 s-1), owing to their high aspect ratio (60:1). The unidirectional transport of photogenerated charge carriers on the Ag-ZnONRs may be accountable for the observed high photocatalytic oxidation of CFS. The photocatalytic oxidation of CFS mainly proceeds through •OH radicals generated on the Ag-ZnONRs surface under light illumination. In addition, heterogeneous activation of peroxymonosulfate by Ag-ZnONRs accelerates the rate of photocatalytic mineralization of CFS. The quantification of oxidative radicals supports the proposed CFS oxidation mechanism. Stability studies of plasmonic Ag-ZnONSTs strongly suggests that it could be useful to clean large volume of pharmaceutical wastewater under direct solar light irradiation.
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Affiliation(s)
- N Pugazhenthiran
- Laboratorio de Fotoquímica y Fotofísica, Departamento de Química, Universidad Técnica Federico Santa María, Campus Casa Central, Av. España 1680, Valparaíso, Chile.
| | - P Sathishkumar
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, 632 014, India
| | - Omeer Albormani
- Department of Chemistry, Faculty of Science, King Khalid University, Abha-61413, Saudi Arabia
| | - S Murugesan
- Department of Inorganic Chemistry, School of Chemistry Madurai Kamaraj University, Madurai-625021, Tamil Nadu, India.
| | - M Kandasamy
- Department of Chemistry, K. Ramakrishnan College of Technology, Tiruchirappalli-621 112, Tamil Nadu, India
| | - M Selvaraj
- Department of Chemistry, Faculty of Science, King Khalid University, Abha-61413, Saudi Arabia.
| | - S Suresh
- PG & Research Department of Physics, Sri Vidya Mandir Arts & Science College (Autonomous), Katteri-636 902, Uthangarai, Tamil Nadu, India
| | - S Karthick Kumar
- Department of Physics, Sethu Institute of Technology, Kariapatti-626115, Virudhunagar, Tamil Nadu, India
| | - D Contreras
- Department of Analytical and Inorganic Chemistry, Faculty of Chemical Sciences, University of Concepcion, Concepcion 4070409, Chile
| | - H Váldes
- Laboratorio de Tecnologías Limpias, Facultad de Ingeniería, Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - R V Mangalaraja
- Faculty of Engineering and Science, Universidad Adolfo Ibáñez, Diagonal las Torres 2640, Peñalolén, Santiago, Chile
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Venkatesan S, Suresh S, Ramu P, Arumugam J, Thambidurai S, Pugazhenthiran N. Methylene Blue Dye Degradation Potential of Zinc Oxide Nanoparticles Bioreduced using Solanum trilobatum Leaf Extract. Results in Chemistry 2022. [DOI: 10.1016/j.rechem.2022.100637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Venkatesan S, Suresh S, Ramu P, Kandasamy M, Arumugam J, Thambidurai S, Prabu K, Pugazhenthiran N. Biosynthesis of zinc oxide nanoparticles using Euphorbia milii leaf constituents: Characterization and improved photocatalytic degradation of methylene blue dye under natural sunlight. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pugazhenthiran N, Murugesan S, Valdés H, Selvaraj M, Sathishkumar P, Smirniotis P, Anandan S, Mangalaraja R. Photocatalytic oxidation of ceftiofur sodium under UV–visible irradiation using plasmonic porous Ag-TiO2 nanospheres. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.09.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Arumugam J, Thambidurai S, Suresh S, Selvapandiyan M, Kandasamy M, Pugazhenthiran N, Karthick Kumar S, Muneeswaran T, Quero F. Green synthesis of zinc oxide nanoparticles using Ficus carica leaf extract and their bactericidal and photocatalytic performance evaluation. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139040] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Kalaiyan G, Suresh S, Thambidurai S, Prabu K, Kumar SK, Pugazhenthiran N, Kandasamy M. Green synthesis of hierarchical copper oxide microleaf bundles using Hibiscus cannabinus leaf extract for antibacterial application. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128379] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Krishna S, Sathishkumar P, Pugazhenthiran N, Guesh K, Mangalaraja RV, Kumaran S, Gracia-Pinilla MA, Anandan S. Magnetically recyclable CoFe2O4/ZnO nanocatalysts for the efficient catalytic degradation of Acid Blue 113 under ambient conditions. RSC Adv 2020; 10:16473-16480. [PMID: 35498872 PMCID: PMC9052941 DOI: 10.1039/d0ra00082e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 03/27/2020] [Indexed: 11/29/2022] Open
Abstract
CoFe2O4/ZnO magnetic nanocatalysts were synthesized using a low-frequency ultrasound-assisted technique to enhance the optical, morphological, magnetic and catalytic properties of ZnO. The as-synthesized nanocatalysts were characterized by XRD, Raman, TEM, DR-UV-Vis and VSM analyses in order to confirm the expected modifications of the resulting nanocatalysts. The Raman spectral analysis revealed substitutional Zn2+ in the CoFe2O4/ZnO nanocatalyst. The as-synthesized material was tested for its catalytic activity in the degradation of Acid Blue (AB113), a known textile pollutant. The CoFe2O4 and CoFe2O4/ZnO nanocatalysts revealed the efficient catalytic degradation of AB113 in ambient conditions. The nanocatalyst dosage and the initial concentration of AB113 were varied by fixing one parameter as constant in order to determine the maximum catalytic efficiency with the minimum catalyst loading for AB113 degradation. The CoFe2O4/ZnO nanocatalyst demonstrated 10-fold enhanced mineralization of AB113 compared to the individual bare nanocatalysts, which could be achieved within 3 hours of catalytic degradation of AB113. The magnetic CoFe2O4/ZnO nanocatalyst was found to be stable for six consecutive recycles of AB113 degradation, which indicates that the catalytic efficiency of the nanocatalyst was retained after various numbers of cycles. CoFe2O4/ZnO magnetic nanocatalysts were synthesized using a low-frequency ultrasound-assisted technique to enhance the optical, morphological, magnetic and catalytic properties of ZnO.![]()
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Affiliation(s)
- S. Krishna
- Department of Chemistry
- Periyar Maniammai Institute of Science & Technology
- Thanjavur 613403
- India
| | | | - N. Pugazhenthiran
- Laboratorio de Tecnologías Limpias
- Facultad de Ingeniería
- Universidad Católica de la Santísima Concepción
- Concepción
- Chile
| | - Kiros Guesh
- Department of Chemistry
- Aksum University
- Axum 1010
- Ethiopia
| | - R. V. Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory
- Department of Materials Engineering
- Faculty of Engineering
- University of Concepcion
- Concepcion 4070409
| | - S. Kumaran
- Department of Biotechnology
- Periyar Maniammai Institute of Science & Technology
- Thanjavur 613 403
- India
| | - M. A. Gracia-Pinilla
- Universidad Autonoma de Nuevo Leon
- Facultad de Ciencias Físico-Matematicas
- Av. Universidad
- Cd. Universitaria
- San Nicolas de los Garza
| | - S. Anandan
- Nanomaterials and Solar Energy Conversion Lab
- Department of Chemistry
- National Institute of Technology
- Trichy 620015
- India
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Anjugam Vandarkuzhali SA, Pugazhenthiran N, Mangalaraja RV, Sathishkumar P, Viswanathan B, Anandan S. Ultrasmall Plasmonic Nanoparticles Decorated Hierarchical Mesoporous TiO 2 as an Efficient Photocatalyst for Photocatalytic Degradation of Textile Dyes. ACS Omega 2018; 3:9834-9845. [PMID: 31459112 PMCID: PMC6644734 DOI: 10.1021/acsomega.8b01322] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 08/13/2018] [Indexed: 05/16/2023]
Abstract
Hierarchical mesoporous TiO2 was synthesized via a solvothermal technique. The sonochemical method was adopted to decorate plasmonic nanoparticles (NPs) (Ag, Au) on the pores of mesoporous TiO2. The crystallinity, structure, and morphology were determined to understand the physicochemical nature of the nanocomposites. The catalytic efficiency of the plasmonic nanocatalysts was tested for the azo dyes (congo red, methyl orange, acid orange 10, and remazol red) under solar and visible light irradiations. The generation of hydroxyl radicals was also studied using terephthalic acid as a probe molecule. An attempt was made to understand the influence of size, work function and Fermi level of the metal NPs toward the efficiency of the photocatalyst. The efficiency of the nanocomposites was found to be in the order of P25 < mesoporous TiO2 < mesoporous Ag-TiO2 < mesoporous Au-TiO2 nanospheres under both direct solar light and visible light irradiation. The results indicated that the adsorption of dye, anatase phase, and surface plasmon resonance of NPs favored the effective degradation of dyes in aqueous solution. Further, the efficiency of the catalyst was also tested for xanthene (rose bengal), rhodamine (rhodamine B, rhodamine 6G), and thiazine (methylene blue) dyes. Both TiO2 and NPs (Ag & Au) possess a huge potential as an eco-friendly photocatalyst for wastewater treatment.
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Affiliation(s)
| | - N. Pugazhenthiran
- Advanced
Ceramics and Nanotechnology Laboratory, Department of Materials Engineering,
Faculty of Engineering, University of Concepcion, Concepcion 4070409, Chile
- E-mail: . Phone: +56-412203664. Fax: +56-41-2203391 (N.P.)
| | - R. V. Mangalaraja
- Advanced
Ceramics and Nanotechnology Laboratory, Department of Materials Engineering,
Faculty of Engineering, University of Concepcion, Concepcion 4070409, Chile
- Technological
Development Unit, University of Concepcion, Coronel Industrial Park, Coronel 4191996, Chile
- E-mail: . Phone: +56-412207389. Fax: +56-41-2203391 (R.V.M.)
| | - P. Sathishkumar
- Department
of Physical Chemistry, Aksum University, Axum 1010, Ethiopia
| | - B. Viswanathan
- National
Centre for Catalysis Research, Indian Institute
of Technology Madras, Chennai 600 036, India
| | - S. Anandan
- Nanomaterials
& Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India
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Pugazhenthiran N, Mangalaraja RV, Sathishkumar P, Murugesan S, Muneeswaran T, Pandiyarajan T, Naveenraj S, Contreras D, Anandan S. Green synthesis of porous Au–Nx-TiO2 nanospheres for solar light induced photocatalytic degradation of diazo and triazo dyes and their eco-toxic effects. NEW J CHEM 2018. [DOI: 10.1039/c8nj04554b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photocatalytic activity of Au–Nx-TiO2 nanospheres evaluated under natural sunlight; 91% mineralization of azo dyes is achieved without toxic intermediates.
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Affiliation(s)
- N. Pugazhenthiran
- Advanced Ceramics and Nanotechnology Laboratory
- Department of Materials Engineering
- Faculty of Engineering
- University of Concepcion
- Concepcion 4070409
| | - R. V. Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory
- Department of Materials Engineering
- Faculty of Engineering
- University of Concepcion
- Concepcion 4070409
| | - P. Sathishkumar
- Department of Physical Chemistry
- Aksum University
- Axum-1010
- Ethiopia
| | - S. Murugesan
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
- India
| | - T. Muneeswaran
- Department of Marine & Coastal Studies
- School of Energy
- Environment and Natural Resources
- Madurai Kamraj University
- Madurai
| | - T. Pandiyarajan
- Advanced Ceramics and Nanotechnology Laboratory
- Department of Materials Engineering
- Faculty of Engineering
- University of Concepcion
- Concepcion 4070409
| | - S. Naveenraj
- Advanced Ceramics and Nanotechnology Laboratory
- Department of Materials Engineering
- Faculty of Engineering
- University of Concepcion
- Concepcion 4070409
| | - D. Contreras
- Department of Analytical and Inorganic Chemistry
- Faculty of Chemical Sciences
- University of Concepcion
- Concepcion 4070409
- Chile
| | - S. Anandan
- Nanomaterials & Solar Energy Conversion Lab
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620015
- India
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Pugazhenthiran N, Kaviyarasan K, Sivasankar T, Emeline A, Bahnemann D, Mangalaraja RV, Anandan S. Sonochemical synthesis of porous NiTiO 3 nanorods for photocatalytic degradation of ceftiofur sodium. Ultrason Sonochem 2017; 35:342-350. [PMID: 27773770 DOI: 10.1016/j.ultsonch.2016.10.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/28/2016] [Accepted: 10/13/2016] [Indexed: 06/06/2023]
Abstract
Porous NiTiO3 nanorods were synthesized through the sonochemical route followed by calcination at various temperature conditions. Surface morphology of the samples was tuned by varying the heat treatment temperature from 100 to 600°C. The synthesized NiTiO3 nanorods were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, diffused reflectance spectroscopy, photoluminescence spectroscopy and Brunauer-Emmett-Teller (BET) analyses. The characterization studies revealed that the NiTiO3 nanomaterial was tuned to porous and perfectly rod shaped structure during the heat treatment at 600°C. The porous NiTiO3 nanorods showed visible optical response and thus can be utilized in the photocatalytic degradation of ceftiofur sodium (CFS) under direct sunlight. The photoluminescence intensity of the porous NiTiO3 nanorods formed while heating at 600°C was lower than that of the as-synthesized NiTiO3 sample owing to the photogenerated electrons delocalization along the one dimensional nanorods and this delocalization resulted in the reduction of the electron-hole recombination rate. The photocatalytic degradation of ceftiofur sodium (CFS) was carried out using NiTiO3 nanorods under the direct sunlight irradiation and their intermediate products were analysed through HPLC to deduce the possible degradation mechanism. The porous NiTiO3 nanorods exhibited an excellent photocatalytic activity towards the CFS degradation and further, the photocatalytic activity was increased by the addition of peroxomonosulfate owing to the simultaneous generation of both OH and SO4-.
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Affiliation(s)
- N Pugazhenthiran
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India; Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepcion, Concepcion 407-0409, Chile
| | - K Kaviyarasan
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India
| | - T Sivasankar
- Department of Chemical Engineering, National Institute of Technology, Trichy 620 015, India
| | - A Emeline
- Photoactive Nanocomposite Materials, Saint-Petersburg State University, Saint-Petersburg 198504, Russia
| | - D Bahnemann
- Photoactive Nanocomposite Materials, Saint-Petersburg State University, Saint-Petersburg 198504, Russia; Photocatalysis and Nanotechnology, Institut fuer Technische Chemie, Gottfried Wilhelm Leibniz Universitaet Hannover, Germany.
| | - R V Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepcion, Concepcion 407-0409, Chile.
| | - S Anandan
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India.
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Jeseentharani V, Pugazhenthiran N, Mathew A, Chakraborty I, Baksi A, Ghosh J, Jash M, Anjusree GS, Deepak TG, Nair AS, Pradeep T. Atomically Precise Noble Metal Clusters Harvest Visible Light to Produce Energy. ChemistrySelect 2017. [DOI: 10.1002/slct.201601730] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- V. Jeseentharani
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - N. Pugazhenthiran
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Ammu Mathew
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Indranath Chakraborty
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Ananya Baksi
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Jyotirmoy Ghosh
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Madhuri Jash
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - G. S. Anjusree
- Amrita Centre for Nanosciences and Molecular Medicine; Amrita Institute of Medical Sciences (AIMS); Ponekkara, AIMS PO Kochi 682041 India
| | - T. G. Deepak
- Amrita Centre for Nanosciences and Molecular Medicine; Amrita Institute of Medical Sciences (AIMS); Ponekkara, AIMS PO Kochi 682041 India
| | - A. Sreekumaran Nair
- Amrita Centre for Nanosciences and Molecular Medicine; Amrita Institute of Medical Sciences (AIMS); Ponekkara, AIMS PO Kochi 682041 India
| | - T. Pradeep
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
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Pugazhenthiran N, Murugesan S, Anandan S. High surface area Ag-TiO2 nanotubes for solar/visible-light photocatalytic degradation of ceftiofur sodium. J Hazard Mater 2013; 263 Pt 2:541-9. [PMID: 24231325 DOI: 10.1016/j.jhazmat.2013.10.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 10/04/2013] [Accepted: 10/05/2013] [Indexed: 05/27/2023]
Abstract
Titanium dioxide nanotubes (TiO2 NTs) with very high surface area (469 m(2)/g) have been synthesized through a simple hydrothermal method and their surface has been modified using silver nanoparticles (Ag NPs). The Ag NPs deposited TiO2 NTs (Ag-TiO2 NTs) show an extended optical response from UV to visible region coupled with a surface plasmon resonance band and thus can be utilized as a plasmonic photocatalyst. The photoluminescence intensity of TiO2 NTs is lower than that of TiO2 nanoparticles due to the delocalization of photogenerated electrons along the one dimensional nanotubes which reduces the rate of charge recombination. The Langmuir adsorption constant of Ag-TiO2 NTs (for ceftiofur sodium adsorption) is twice that of P25 TiO2. The Ag-TiO2 NTs exhibit excellent photocatalytic activity toward the degradation of ceftiofur sodium (CFS) due to high surface area and mesoporosity of TiO2 NTs. The addition of peroxomonosulfate in the photocatalytic system greatly amplifies the CFS degradation owing to the simultaneous generation of both OH and SO4(-). The catalyst retains its photocatalytic activity at least up to four consecutive cycles.
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Affiliation(s)
- N Pugazhenthiran
- School of Chemistry, Madurai Kamaraj University, Madurai 625021, India
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