Nanofibras de ZnO produzidas por eletrofiação: síntese, caracterização e atividade fotocatalítica
DOI:
https://doi.org/10.34117/bjdv9n4-022Keywords:
Óxido de Zinco, eletrofiação, fotocatálise heterogêneaAbstract
Nanofibras de ZnO foram produzidas a partir de precursores à base de poli(álcool vinílico) (PVA) e acetato de zinco (AcZn) obtidos por eletrofiação, nas proporções mássicas de PVA/AcZn 1:1; 2:1 e 4:1, e posterior calcinação. Bandas características da ligação Zn-O e de transições eletrônicas do ZnO foram detectadas nos espectros de infravermelho (FTIR) e absorção fotoacústica (PAS) das nanofibras. Picos cristalinos característicos da estrutura wurtzita e fase hexagonal do ZnO foram detectados nos difratogramas de raios-X (DRX) das amostras produzidas. Os valores de energia de gap (Eg) estimados para as nanofibras de ZnO produzidas após calcinação dos precursores PVA/AcZn 1:1; 2:1 e 4:1 foram de 2,95; 3,15 e 3,02 eV, respectivamente, e a área específica (SBET) destas respectivas amostras foi de 25,26 m²/g; 20,95 m²/g e 23,79 m²/g. As imagens de MEV e MET das amostras de ZnO revelaram que após calcinação, a morfologia de fibra foi mantida apenas para aquelas produzidas a partir dos nanofios precursores de PVA/AcZn 1:1 e 4:1. Todas as amostras de ZnO exibiram excelente desempenho fotocatalítico, degradando cerca de 99% do corante Azul de Metileno, em ambos pH 7,0 e 9,0, e após 240 minutos de irradiação UV-visível.
References
ALFJAWF, R. N.; RAHMAN, F.; KUMAR, S. Defects/ vacancies engineering and ferromagnetic behavior in puro ZnO and ZnO doped with Co nanoparticles. Materials Research Bulletin, 83, 108p, 2016.
BHARDWAJ, N.; KUNDU, S. C. Electrospinning: A fascinating fiber fabrication technique. Biotechnology Advances, v. 28, p. 325, 2010.
CHIANG, Y.; LIN, C. Photocatalytic decolorization of methylene blue in aqueous solutions using coupled ZnO/SnO2 photocatalysts. Powder Technology, v. 246, p. 137-143, 2013.
DONKADOKULA, N, Y.; et al. A review on advanced physico-chemical and biological textile dye wastewater treatment techniques. Reviews in Environmental Science and Bio/Technology, v. 19, 2020, p. 543-560.
EDWALDZ, E.; et al. Material selection in electrospinning microparticles. Polymer, v. 153, p. 529, 2018.
FERNANDES, D.M.; HECHENLEITNER, A.A. WINKLER; LIMA, S.M.; ANDRADE, L.H.C.; CAIRES, A.R.L.; PINEDA, E.A. GÓMEZ. Preparation, characterization, and photoluminescence study of PVA/ZnO nanocomposite films. Materials Chemistry and Physics, v. 128, p. 371-376, 2011.
HAAS, D.; HEINRICH, S.; GREIL, P. Solvent control of cellulose acetate nanofibre felt structure produced by electrospinning. Journal of Materials Science, v. 45, p. 1299, 2010
HUANG, C-H.; et al. Adsorption of cationic dyes onto mesoporous silica. Microporous and Mesoporous Materials, 141, p. 102, 2011
IATSUNSKYI, I.; et al. Tailoring of the electronic properties of ZnO-polyacrylonitrile nanofibers: Experiment and theory. Applied Surface Science, v. 411, p. 494, 2017.
IBHADON, A. O.; FITZPATRICK, P. Heterogeneous Photocatalysis: Recent Advances and Applications. Catalysts, v. 3, p. 189-218, 2013.
IMRAN, M.; et al. Fabrication and characterization of zinc oxide nanofibers for renewable energy applications. Arabian Journal of Chemistry, v. 10, p. S1067, 2018.
KHARAZMI, A.; et al. Structural, optical, opto-thermal and thermal properties of ZnS–PVA nanofluids synthesized through a radiolytic approach. Journal of Nanotechnology, v. 6, p. 529-536, 2015
LI, H. et al. Degradation of methyl orange by sodium persulfate activated with zero-valent zinc. Separation and Purification Technology, 132, 2014, 168p.
LU, S.; MA, Y.; ZHAO, L. Production of ZnO-CoOx-CeO2 nanocomposites and their dye removal performance from wastewater by adsorption-photocatalysis. Journal of Molecular Liquids, v. 364, p. 119924, 2022.
MARGAN, P.; HAGHIGHI, M. Sono-coprecipitation synthesis and physicochemical characterization of CdO-ZnO nanophotocatalyst for removal of acid orange 7 from wastewater. Ultrasonics Sonochemistry, v. 40, p. 323, 2018
MAZIARZ, W., et al. Gas-sensitive Properties of ZnO Nanorods/Nanowires Obtained by Electrodeposition and Electrospinning Methods. Procedia Engineering, 47(0), 2012, 841p.
MISHRA, J.; et al. Role of linker molecules on morphology of tripodal ligands based functionalized ZnO nanoparticles and its effect on photocatalysis. Inorganic Chemistry Communications, v. 148, p. 110333, 2023.
MOHTARAM, F.; et al. Electrospun ZnO nanofiber interlayers for enhanced performance of organic photovoltaic devices. Solar Energy, v. 197, p. 311-316, 2020
OJAH, N.; et al. Surface modification of core-shell silk/PVA nanofibers by oxygen dielectric barrier discharge plasma: Studies of physico-chemical properties and drug release behavior. Applied Surface Science. 475, 219p, 2019.
OKUTAN, N.; TERZI, P.; ALTAY, F. Affecting parameters on electrospinning process and characterization of electrospun gelatin nanofibers. Food Hydrocolloids, v. 39, p. 19, 2014.
OLIVEIRA, A. G.; et al. Wastewater treatment using Mg-doped ZnO nano semiconductors: A study of their potential use in environmental remediation. Journal of Photochemistry and Photobiology A: Chemistry, v. 407, p. 113078, 2021
OLIVEIRA, P. S.; SILVA, L. L. W.; VIANA, R. R. Evaluation of the capacity of adsorption of methylene blue die in aqueous solutions in natural kaolinite and intercalated with potassium acetate. Cerâmica 59, Cuiabá, p. 338-344, 2013.
ORIMI, R. L., Investigation of the effect of annealing on the photoluminescence properties of ZnO nanoparticles, synthesized at low temperature. Optical Materials, 35(3), 657p, 2013.
POGGERE, A. P. Azul de Metileno: Propriedades e Tratamentos. Universidade Tecnológica Federal do Paraná. [S.l.], p. 7. 2011.
POPA, N.; VISA, M. The synthesis, activation and characterization of charcoal powder for the removal of methylene blue and cadmium from wastewater. Advanced Powder Technology, v. 28, p. 1866-1876, 2017.
RAGUPATHY, S.; et al. Effect of doping and loading Parameters on photocatalytic degradation of brilliant green using Sn doped ZnO loaded CSAC. Environmental Research, v. 210, p. 112833, 2022
REZA, K. M.; KURNY, A.; GULSHAN, F. Parameters affecting the photocatalytic degradation of dyes using TiO2: a review. Applied Water Science, 2015, 1p.
SEKAR, A.D.; et al. Photocatalytic degradation of naphthalene using calcined FeZnO/ PVA nanofibers. Chemosphere, v. 105, p. 610 – 617, 2018
SHAH, A. P.; et al. High performance visible light photocatalysis of electrospun PAN/ZnO hybrid nanofibers. Journal of Industrial and Engineering Chemistry, v. 77, p. 154-163, 2019.
TAMMINA, S. K.; MANDAL, B. K. Tyrosine mediated synthesis of SnO2 nanoparticles and their photocatalytic activity towards Violet 4 BSN dye. Journal of Molecular Liquids, v. 221, p. 415-421, 2016.
THAVASI, V.; SINGH, G.; RAMAKRISHNA, S. Electrospun nanofibers in energy and environmental applications. Energy Environmental Science, 1, 2008, 205p.
THOMMES, M. et al. Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report). Pure and Applied Chemistry, v. 87, p. 9-10, 2015.
TIZAOUI, C.; GRIMA, N. Kinetics of the ozone oxidation of Reactive Orange 16 azo-dye in aqueous solution. Chemical Engineering Journal, 173, 2011, 463p.
VARSHNEY, D.; DWIVEDI, S. On the synthesis, structural, optical and magnetic properties of nano-size Zn-MgO… Superlattices and Microstructures, 85, 2015, 886p.
XING, S.; TANG, W., Synthesis, characterization and mechanism of electrospun carbon nanofibers decorated with ZnO nanoparticles for flexible ammonia gas sensors at room temperature. Sensors and Actuators B: Chemical, v. 362, p. 131789, 2022
ZHANG, Y. WANG, Y. JIA, J. WANG, J. Nonenzymatic glucose sensor based on graphene oxide and electrospun NiO nanofibers. Sensors and Actuators B: Chemical, v. 171–172, p. 580-587, 2012.
