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Almeida da Silva TC, Marchiori L, Oliveira Mattos B, Ullah S, Barud HDS, Romano Domeneguetti R, Rojas-Mantilla HD, Boldrin Zanoni MV, Rodrigues-Filho UP, Ferreira-Neto EP, Ribeiro SJL. Designing Highly Photoactive Hybrid Aerogels for In-Flow Photocatalytic Contaminant Removal Using Silica-Coated Bacterial Nanocellulose Supports. ACS APPLIED MATERIALS & INTERFACES 2023; 15:23146-23159. [PMID: 37155614 DOI: 10.1021/acsami.3c02008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
This study explores the use of silica-coated bacterial nanocellulose (BC) scaffolds with bulk macroscopic yet nanometric internal pores/structures as functional supports for high surface area titania aerogel photocatalysts to design flexible, self-standing, porous, and recyclable BC@SiO2-TiO2 hybrid organic-inorganic aerogel membranes for effective in-flow photo-assisted removal of organic pollutants. The hybrid aerogels were prepared by sequential sol-gel deposition of the SiO2 layer over BC, followed by coating of the resulting BC@SiO2 membranes with a porous titania aerogel overlayer of high surface area using epoxide-driven gelation, hydrothermal crystallization, and subsequent supercritical drying. The silica interlayer between the nanocellulose biopolymer scaffold and the titania photocatalyst was found to greatly influence the structure and composition, particularly the TiO2 loading, of the prepared hybrid aerogel membranes, allowing the development of photochemically stable aerogel materials with increased surface area/pore volume and higher photocatalytic activity. The optimized BC@SiO2-TiO2 hybrid aerogel showed up to 12 times faster in-flow photocatalytic removal of methylene blue dye from aqueous solution in comparison with bare BC/TiO2 aerogels and outperformed most of the supported-titania materials reported earlier. Moreover, the developed hybrid aerogels were successfully employed to remove sertraline drug, a model emergent contaminant, from aqueous solution, thus further demonstrating their potential for water purification.
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Affiliation(s)
| | - Leonardo Marchiori
- Institute of Chemistry, São Paulo State University─UNESP, Araraquara, São Paulo 14800-060, Brazil
| | - Bianca Oliveira Mattos
- Institute of Chemistry of São Carlos, University of São Paulo─USP, São Carlos, São Paulo 13560-970, Brazil
| | - Sajjad Ullah
- Institute of Chemical Sciences, University of Peshawar─UOP, Peshawar 25120, Pakistan
| | | | | | | | | | | | - Elias Paiva Ferreira-Neto
- Department of Chemistry, Federal University of Santa Cantarina─UFSC, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Sidney José Lima Ribeiro
- Institute of Chemistry, São Paulo State University─UNESP, Araraquara, São Paulo 14800-060, Brazil
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Dippong T. Synthesis, Physicochemical Characterization and Applications of Advanced Nanomaterials. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1674. [PMID: 36837304 PMCID: PMC9964895 DOI: 10.3390/ma16041674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
This Special Issue highlights the last decade's progress regarding new nanostructured materials. In this regard, the development of nanoscale syntheses and innovative characterization tools that resulted in the tailored design of nanostructured materials with versatile abilities in many applications were investigated. Various types of engineered nanostructures, usually metal nanoparticles or nanoporous metal oxides, have been synthesized for various applications. This Special Issue covers the state-of-the-art of advanced nanoparticles in many disciplines (chemistry, pharmacy, nanomedicine, agriculture, catalysis, and environmental science). The crystallite sizes depended on the annealing temperature and type of doping ion. A combination of rigid and soft particles could simultaneously enhance both the tensile properties and the fracture toughness, which could not be achieved by the single-phase particles independently. The surface charge and in vitro corrosion resistance are key parameters characterizing biomaterials in the interaction of the implant with the biological environment. Solar energy in the presence of a photocatalyst can be effectively converted into electricity/fuel, break down chemical and microbial pollutants, and help water purification. The saturation magnetization, remanent magnetizations, coercivity, and anisotropy were found to depend on the doping ion, annealing temperature, and particle size. The efficiency of the photocatalysis reaction depends on several factors, including light absorption capacity/light intensity, the type of photocatalyst used, the concentration of a photocatalyst and contaminant particles, the pH of the reaction medium, etc. The variety of color pigments and coloring properties of the targeted application in the ceramic industry was also of interest.
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Affiliation(s)
- Thomas Dippong
- Faculty of Science, Technical University of Cluj-Napoca, 76 Victoriei Street, 430122 Baia Mare, Romania
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Medeiros AR, Lima FDS, Rosenberger AG, Dragunski DC, Muniz EC, Radovanovic E, Caetano J. Poly(butylene adipate-co-terephthalate)/Poly(lactic acid) Polymeric Blends Electrospun with TiO 2-R/Fe 3O 4 for Pollutant Photodegradation. Polymers (Basel) 2023; 15:polym15030762. [PMID: 36772062 PMCID: PMC9921010 DOI: 10.3390/polym15030762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/12/2023] [Accepted: 01/19/2023] [Indexed: 02/05/2023] Open
Abstract
This work aimed to use the electrospinning technique to obtain PBAT/PLA polymer fibers, with the semiconductors rutile titanium dioxide (TiO2-R) and magnetite iron oxide (Fe3O4), in order to promote the photocatalytic degradation of environmental contaminants. The parameters used in the electrospinning process to obtain the fibers were distance from the needle to the collecting target of 12 cm, flow of 1 mL h-1 and voltage of 14 kV. The best mass ratio of semiconductors in the polymeric fiber was defined from a 22 experimental design, and the values obtained were 10% TiO2-R, 1% Fe3O4 at pH 7.0. Polymer fibers were characterized by Scanning Electron Microscopy (SEM), Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and Fourier Transform Infrared (FTIR) techniques. SEM measurements indicated a reduction in fiber diameter after the incorporation of semiconductors; for the PBAT/PLA fiber, the average diameter was 0.9466 ± 0.2490 µm, and for the fiber with TiO2-R and Fe3O4 was 0.6706 ± 0.1447 µm. In the DSC, DRX, TGA and FTIR analyses, it was possible to identify the presence of TiO2-R and Fe3O4 in the fibers, as well as their interactions with polymers, demonstrating changes in the crystallinity and degradation temperature of the material. These fibers were tested against Reactive Red 195 dye, showing an efficiency of 64.0% within 24 h, showing promise for photocatalytic degradation of environmental contaminants.
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Affiliation(s)
| | | | | | - Douglas Cardoso Dragunski
- Universidade Estadual do Oeste do Paraná—UNIOESTE, Toledo 85903-000, Brazil
- Department of Chemistry, State University of Maringá, 5790 Colombo Avenue, Maringá 87020-900, Brazil
| | - Edvani Curti Muniz
- Department of Chemistry, State University of Maringá, 5790 Colombo Avenue, Maringá 87020-900, Brazil
- Department of Chemistry, Federal University of Piauí, Campus Petronio Portella, Ininga, Teresina 64049-550, Brazil
- Department of Material Science, Federal University of Technology—Parana, Estr. dos Pioneiros, 3131, Jardim Morumbi, Londrina 86036-370, Brazil
| | - Eduardo Radovanovic
- Department of Chemistry, State University of Maringá, 5790 Colombo Avenue, Maringá 87020-900, Brazil
| | - Josiane Caetano
- Universidade Estadual do Oeste do Paraná—UNIOESTE, Toledo 85903-000, Brazil
- Correspondence:
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Sukhanova EV, Sagatov NE, Oreshonkov AS, Gavryushkin PN, Popov ZI. Halogen-Doped Chevrel Phase Janus Monolayers for Photocatalytic Water Splitting. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:368. [PMID: 36678120 PMCID: PMC9860981 DOI: 10.3390/nano13020368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Chevrel non-van der Waals crystals are promising candidates for the fabrication of novel 2D materials due to their versatile crystal structure formed by covalently bonded (Mo6X8) clusters (X-chalcogen atom). Here, we present a comprehensive theoretical study of the stability and properties of Mo-based Janus 2D structures with Chevrel structures consisting of chalcogen and halogen atoms via density functional theory calculations. Based on the analysis performed, we determined that the S2Mo3I2 monolayer is the most promising structure for overall photocatalytic water-splitting application due to its appropriate band alignment and its ability to absorb visible light. The modulated Raman spectra for the representative structures can serve as a blueprint for future experimental verification of the proposed structures.
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Affiliation(s)
- Ekaterina V. Sukhanova
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
| | - Nursultan E. Sagatov
- Laboratory of Phase Transformations and State Diagrams of the Earth’s Matter at High Pressures, Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Aleksandr S. Oreshonkov
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
- Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
- School of Engineering and Construction, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - Pavel N. Gavryushkin
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
- Laboratory of Phase Transformations and State Diagrams of the Earth’s Matter at High Pressures, Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
- Geology Geophysics Department, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Zakhar I. Popov
- Laboratory of Acoustic Microscopy, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, 119334 Moscow, Russia
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