Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties

Neste trabalho, filmes finos de CeO2 dopados com Eu3+, Tb3+ e Tm3+ nas proporções de 2 e 4 %mol foram obtidos por spin coating e calcinados em 700 °C. Os filmes foram caracterizados pelas técnicas de DRX, FEG, MFA e UV-Vis. As propriedades fotocatalíticas dos filmes finos foram determinadas pela deg...

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Autor principal: Dias, Beatriz Pinheiro
Outros Autores: Motta, Fabiana Villela da
Formato: bachelorThesis
Idioma:English
Publicado em: Universidade Federal do Rio Grande do Norte
Assuntos:
Eu3+, Tb3+ and Tm3+ doped CeO2; thin films; spin coating; photocatalytic reuse
CeO2 dopado com Eu3+, Tb3+ e Tm3+; filmes finos; spin coating; reuso fotocatalítico
Endereço do item:https://repositorio.ufrn.br/handle/123456789/40355
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id ri-123456789-40355
record_format dspace
institution Repositório Institucional
collection RI - UFRN
language English
topic Eu3+, Tb3+ and Tm3+ doped CeO2; thin films; spin coating; photocatalytic reuse
CeO2 dopado com Eu3+, Tb3+ e Tm3+; filmes finos; spin coating; reuso fotocatalítico
spellingShingle Eu3+, Tb3+ and Tm3+ doped CeO2; thin films; spin coating; photocatalytic reuse
CeO2 dopado com Eu3+, Tb3+ e Tm3+; filmes finos; spin coating; reuso fotocatalítico
Dias, Beatriz Pinheiro
Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
description Neste trabalho, filmes finos de CeO2 dopados com Eu3+, Tb3+ e Tm3+ nas proporções de 2 e 4 %mol foram obtidos por spin coating e calcinados em 700 °C. Os filmes foram caracterizados pelas técnicas de DRX, FEG, MFA e UV-Vis. As propriedades fotocatalíticas dos filmes finos foram determinadas pela degradação do corante azul de metileno (AM). Os filmes finos foram submetidos a 4 ciclos fotocatalíticos para analisar a capacidade de serem reusados. Os difratogramas mostram que não houve a formação de fases secundárias, onde todos os picos são referentes ao CeO2. As micrografias de FEG indicam que a dopagem com 4 %mol promove a redução da espessura e porosidade superficial dos filmes finos. As imagens de MFA indicam o aumento da rugosidade superficial com a dopagem utilizando terras raras. A dopagem com Eu3+, Tb3+ e Tm3+ aumentam a atividade fotocatalítica em pelo menos 15%, para os filmes dopados com 4 %mol. Os testes de reuso indicam que a atividade fotocatalítica se mantém praticamente constante após a aplicação de quatro ciclos consecutivos.
author2 Motta, Fabiana Villela da
author_facet Motta, Fabiana Villela da
Dias, Beatriz Pinheiro
format bachelorThesis
author Dias, Beatriz Pinheiro
author_sort Dias, Beatriz Pinheiro
title Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
title_short Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
title_full Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
title_fullStr Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
title_full_unstemmed Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
title_sort study of obtaining thin films of ceo2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: photocatalytic properties
publisher Universidade Federal do Rio Grande do Norte
publishDate 2019
url https://repositorio.ufrn.br/handle/123456789/40355
work_keys_str_mv AT diasbeatrizpinheiro studyofobtainingthinfilmsofceo2dopedwith2and4molofeuropiumterbiumandthuliumobtainedbyspincoatingphotocatalyticproperties
AT diasbeatrizpinheiro estudodaobtencaodefilmesfinosdeceo2dopadoscom2e4moldeeuropioterbioetulioobtidosporspincoatingpropriedadesfotocataliticas
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spelling ri-123456789-403552021-09-29T13:22:34Z Study of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties Estudo da obtenção de filmes finos de CeO2 dopados com 2 e 4 %mol de európio, térbio e túlio obtidos por spin-coating: Propriedades fotocatalíticas Dias, Beatriz Pinheiro Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio Santiago, Anderson de Azevedo Gomes Eu3+, Tb3+ and Tm3+ doped CeO2; thin films; spin coating; photocatalytic reuse CeO2 dopado com Eu3+, Tb3+ e Tm3+; filmes finos; spin coating; reuso fotocatalítico Neste trabalho, filmes finos de CeO2 dopados com Eu3+, Tb3+ e Tm3+ nas proporções de 2 e 4 %mol foram obtidos por spin coating e calcinados em 700 °C. Os filmes foram caracterizados pelas técnicas de DRX, FEG, MFA e UV-Vis. As propriedades fotocatalíticas dos filmes finos foram determinadas pela degradação do corante azul de metileno (AM). Os filmes finos foram submetidos a 4 ciclos fotocatalíticos para analisar a capacidade de serem reusados. Os difratogramas mostram que não houve a formação de fases secundárias, onde todos os picos são referentes ao CeO2. As micrografias de FEG indicam que a dopagem com 4 %mol promove a redução da espessura e porosidade superficial dos filmes finos. As imagens de MFA indicam o aumento da rugosidade superficial com a dopagem utilizando terras raras. A dopagem com Eu3+, Tb3+ e Tm3+ aumentam a atividade fotocatalítica em pelo menos 15%, para os filmes dopados com 4 %mol. Os testes de reuso indicam que a atividade fotocatalítica se mantém praticamente constante após a aplicação de quatro ciclos consecutivos. In this work, thin films of Eu3+, Tb3+ and Tm3+ doped CeO2 in the proportions of 2 and 4 mol% were obtained by spin coating and calcined at 700 °C. The films were characterized by XRD, SEM, AFM and UV-Vis techniques. The photocatalytic activity of the thin films was measured by the degradation of the methylene blue (MB) dye. The thin films were submitted to 4 photocatalytic cycles to analyze the capacity to be reused. The diffractograms show that was no secondary phase formation, where all characteristic peaks are related to CeO2. SEM micrographs indicate that doping at 4 mol% promotes the reduction in the thickness and surface porosity of the thin films. AFM images indicate the increase in surface roughness with rare earths doping. Doping with Eu3+, Tb3+ and Tm3+ increased the degradation of the methylene blue dye by at least 15% for thin films doped at 4 mol%. The reuse tests indicate that the photocatalytic activity remains practically constant even with the application of four consecutive cycles. 2019-11-27T11:22:45Z 2021-09-29T13:22:33Z 2019-11-27T11:22:45Z 2021-09-29T13:22:33Z 2019-11-22 bachelorThesis 20180009162 F. Teran, Aplicação de fotocatálise heterogênea e homogênea para a remoção de cor em efluentes provenientes de indústria de procesamento de couro, Revista Monografias Ambientais, 13 (2014) 3316-3325. E. Duarte, T.P. Xavier, D.R. de Souza, J. De Miranda, A. da HMachado, C. Jung, L. De Oliveira, C. Sattler, Construcao e Estudos de Perfomance de um Reator Fotoquimico Tipo CPC (" Compound Parabolic Concentrator"), Química Nova, 28 (2005) 921. H. Sopha, M. Baudys, M. Krbal, R. Zazpe, J. Prikryl, J. Krysa, J.M. Macak, Scaling up anodic TiO2 nanotube layers for gas phase photocatalysis, Electrochemistry Communications, 97 (2018) 91-95. P. Arbab, B. Ayati, M.R. Ansari, Reducing the use of nanotitanium dioxide by switching from single photocatalysis to combined photocatalysis-cavitation in dye elimination, Process Safety and Environmental Protection, 121 (2019) 87-93. A. Bianco Prevot, V. Maurino, D. Fabbri, A.M. Braun, M.C. Gonzalez, Degradation of melamine in aqueous systems by vacuum UV-(VUV-) photolysis. An alternative to photocatalysis, Catalysis Today, (2018). R. Magudieswaran, J. Ishii, K. Chandar Nagamuthu Raja, C. Terashima, R. Venkatachalam, A. Fujishima, S. Pitchaimuthu, Green and Chemical Synthesized CeO2 Nanoparticles for Photocatalytic Indoor Air Pollutant Degradation, Materials Letters, (2018). D. Van Dao, T.T.D. Nguyen, H.-Y. Song, J.-K. Yang, T.-W. Kim, Y.-T. Yu, I.-H. Lee, Ionic liquid-assisted preparation of Ag-CeO2 nanocomposites and their improved photocatalytic activity, Materials & Design, 159 (2018) 186-194. M.M. Khan, S.A. Ansari, J.-H. Lee, M.O. Ansari, J. Lee, M.H. Cho, Electrochemically active biofilm assisted synthesis of Ag@CeO2 nanocomposites for antimicrobial activity, photocatalysis and photoelectrodes, Journal of Colloid and Interface Science, 431 (2014) 255-263. J.C. Cano-Franco, M. Álvarez-Láinez, Effect of CeO2 content in morphology and optoelectronic properties of TiO2-CeO2 nanoparticles in visible light organic degradation, Materials Science in Semiconductor Processing, 90 (2019) 190-197. Z. Wang, X. Li, H. Qian, S. Zuo, X. Yan, Q. Chen, C. Yao, Upconversion Tm3+:CeO2/palygorskite as direct Z-scheme heterostructure for photocatalytic degradation of bisphenol A, Journal of Photochemistry and Photobiology A: Chemistry, 372 (2019) 42-48. M.A. Rodrigues, A.C. Catto, E. Longo, E. Nossol, R.C. Lima, Characterization and electrochemical performance of CeO2 and Eu-doped CeO2 films as a manganese redox flow battery component, Journal of Rare Earths, 36 (2018) 1074-1083. W. Huang, Y. Tan, D. Li, H. Du, X. Hu, G. Li, Y. Kuang, M. Li, D. Guo, Improved photo-luminescence by co-doped lithium in the phosphor system CeO2:Eu3+, Journal of Luminescence, 206 (2019) 432-439. K.M. Girish, R. Naik, S.C. Prashantha, H. Nagabhushana, H.P. Nagaswarupa, K.S. Anantha Raju, H.B. Premkumar, S.C. Sharma, B.M. Nagabhushana, Zn2TiO4:Eu3+ nanophosphor: Self explosive route and its near UV excited photoluminescence properties for WLEDs, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 138 (2015) 857-865. Y. AlSalka, A. Hakki, M. Fleisch, D.W. Bahnemann, Understanding the degradation pathways of oxalic acid in different photocatalytic systems: Towards simultaneous photocatalytic hydrogen evolution, Journal of Photochemistry and Photobiology A: Chemistry, 366 (2018) 81-90. K. Piccoli, M. Scaliante, N. Fernandes-Machado, CATALISADORES SUPORTADOS EM ZEÓLITA NaY NA DEGRADAÇÃO DE CORANTE TÊXTIL, Blucher Chemical Engineering Proceedings, 1 (2015) 1553-1558. P. Kumar, P. Kumar, A. Kumar, R.C. Meena, R. Tomar, F. Chand, K. Asokan, Structural, morphological, electrical and dielectric properties of Mn doped CeO2, Journal of Alloys and Compounds, 672 (2016) 543-548. C.A. Schneider, W.S. Rasband, K.W. Eliceiri, NIH Image to ImageJ: 25 years of image analysis, Nature methods, 9 (2012) 671-675. L. Tolvaj, K. Mitsui, D. Varga, Validity limits of Kubelka–Munk theory for DRIFT spectra of photodegraded solid wood, Wood Science and Technology, 45 (2011) 135-146. D.L. Wood, J. Tauc, Weak Absorption Tails in Amorphous Semiconductors, Physical Review B, 5 (1972) 3144-3151. P. Kumar, B. Ahmad, F. Chand, K. Asokan, Magnetic and electronic structures of Co ion implanted CeO2 thin films, Applied Surface Science, 452 (2018) 217-222. M.A. Rodrigues, A.C. Catto, E. Longo, E. Nossol, R.C. Lima, Characterization and electrochemical performance of CeO2 and Eu-doped CeO2 films as a manganese redox flow battery component, Journal of Rare Earths, (2018). S.K. Sahoo, M. Mohapatra, S. Anand, Characterization and optical properties of Eu-doped cubic nano ceria synthesized by using the co-precipitation-hydrothermal route, Journal of the Korean Physical Society, 62 (2013) 297-304. A.A. Saleh, H.Z. Hamamera, H.K. Khanfar, A.F. Qasrawi, G. Yumusak, Gd and Tb doping effects on the physical properties of Nd2Sn2O7, Materials Science in Semiconductor Processing, 88 (2018) 256-261. L.G.A. Carvalho, L.A. Rocha, J.M.M. Buarque, R.R. Gonçalves, C.S. Nascimento Jr, M.A. Schiavon, S.J.L. Ribeiro, J.L. Ferrari, Color tunability in green, red and infra-red upconversion emission in Tm3+/Yb3+/Ho3+ co-doped CeO2 with potential application for improvement of efficiency in solar cells, Journal of Luminescence, 159 (2015) 223-228. R. Aydin, B. Sahin, Li:Ce co-doped CdO films synthesized by SILAR method: Effects of rare earth element Ce content on the physical attributes, Ceramics International, 44 (2018) 22249-22254. O. Kamoun, A. Boukhachem, M. Amlouk, S. Ammar, Physical study of Eu doped MoO3 thin films, Journal of Alloys and Compounds, 687 (2016) 595-603. G.M. Ramans, J.V. Gabrusenoks, A.R. Lusis, A.A. Patmalnieks, Structure of amorphous thin films of WO3 and MoO3, Journal of Non-Crystalline Solids, 90 (1987) 637-640. R. Rajesh Kanna, K. Sakthipandi, S.M. Seeni Mohamed Aliar, N. Lenin, M. Sivabharathy, Doping effect of rare-earth (lanthanum, neodymium and gadolinium) ions on structural, optical, dielectric and magnetic properties of copper nanoferrites, Journal of Rare Earths, (2018). W. Shi, Z. Li, L. Wang, S. Wu, G. Zhang, M. Meng, X. Ma, Photoelectric characteristics of rare earth element Eu-doped MoS2 thin films, Optics Communications, 406 (2018) 50-54. M. Wang, B. Tian, D. Yue, W. Lu, M. Yu, C. Li, Q. Li, Z. Wang, Crystal structure, morphology and luminescent properties of rare earthion-doped SrHPO4 nanomaterials, Journal of Rare Earths, 33 (2015) 355-360. M. Mittal, A. Gupta, O.P. Pandey, Role of oxygen vacancies in Ag/Au doped CeO2 nanoparticles for fast photocatalysis, Solar Energy, 165 (2018) 206-216. B. Li, B. Zhang, S. Nie, L. Shao, L. Hu, Optimization of plasmon-induced photocatalysis in electrospun Au/CeO2 hybrid nanofibers for selective oxidation of benzyl alcohol, Journal of Catalysis, 348 (2017) 256-264. K. Wang, Y. Chang, L. Lv, Y. Long, Effect of annealing temperature on oxygen vacancy concentrations of nanocrystalline CeO2 film, Applied Surface Science, 351 (2015) 164-168. L. Chen, J. Tang, L.-N. Song, P. Chen, J. He, C.-T. Au, S.-F. Yin, Heterogeneous photocatalysis for selective oxidation of alcohols and hydrocarbons, Applied Catalysis B: Environmental, 242 (2019) 379-388. C. Belver, J. Bedia, A. Gómez-Avilés, M. Peñas-Garzón, J.J. Rodriguez, Chapter 22 - Semiconductor Photocatalysis for Water Purification, in: S. Thomas, D. Pasquini, S.-Y. Leu, D.A. Gopakumar (Eds.) Nanoscale Materials in Water Purification, Elsevier, 2019, pp. 581-651. M.M. Momeni, M. Hakimian, A. Kazempour, In-situ manganese doping of TiO2 nanostructures via single-step electrochemical anodizing of titanium in an electrolyte containing potassium permanganate: A good visible-light photocatalyst, Ceramics International, 41 (2015) 13692-13701. F. Bensouici, M. Bououdina, A.A. Dakhel, R. Tala-Ighil, M. Tounane, A. Iratni, T. Souier, S. Liu, W. Cai, Optical, structural and photocatalysis properties of Cu-doped TiO2 thin films, Applied Surface Science, 395 (2017) 110-116. F.C. Correia, M. Calheiros, J. Marques, J.M. Ribeiro, C.J. Tavares, Synthesis of Bi2O3/TiO2 nanostructured films for photocatalytic applications, Ceramics International, 44 (2018) 22638-22644. L.M.P. Garcia, M.T.S. Tavares, N.F. Andrade Neto, R.M. Nascimento, C.A. Paskocimas, E. Longo, M.R.D. Bomio, F.V. Motta, Photocatalytic activity and photoluminescence properties of TiO2, In2O3, TiO2/In2O3 thin films multilayer, Journal of Materials Science: Materials in Electronics, 29 (2018) 6530-6542. https://repositorio.ufrn.br/handle/123456789/40355 en Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Universidade Federal do Rio Grande do Norte Brasil UFRN Engenharia de Materiais

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