Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation

We synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film deposition. The physicochemical characterization of the catalysts was carried out b...

Full description

Autores:: Vallejo, William

Tipo de recurso:

Fecha de publicación:: 2020

Institución:: Universidad del Atlántico

Repositorio:: Repositorio Uniatlantico

Idioma:: eng

id	UNIATLANT2_db43b6a032170f75a679b0ff201907ea
oai_identifier_str	oai:repositorio.uniatlantico.edu.co:20.500.12834/989
network_acronym_str	UNIATLANT2
network_name_str	Repositorio Uniatlantico
repository_id_str
dc.title.spa.fl_str_mv	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
title	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
spellingShingle	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation thin films; ZnO; doping; heterogeneous photocatalysis
title_short	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
title_full	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
title_fullStr	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
title_full_unstemmed	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
title_sort	Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
dc.creator.fl_str_mv	Vallejo, William
dc.contributor.author.none.fl_str_mv	Vallejo, William
dc.contributor.other.none.fl_str_mv	Cantillo, Alvaro Salazar, Briggitte Diaz-Uribe, Carlos Ramos, Wilkendry Romero, Eduard Hurtado, Mikel
dc.subject.keywords.spa.fl_str_mv	thin films; ZnO; doping; heterogeneous photocatalysis
topic	thin films; ZnO; doping; heterogeneous photocatalysis
description	We synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film deposition. The physicochemical characterization of the catalysts was carried out by Raman spectroscopy, scanning electron microscopy (SEM), X-ray di raction, and di use reflectance measurements. The photocatalytic activity was studied under visible irradiation in aqueous solution, and kinetic parameters were determined by pseudo-first-order fitting. The Raman spectra results evinced the doping process and suggested the formation of heterojunctions for both dopants. The structural di raction patterns indicated that the catalysts were polycrystalline and demonstrated the presence of a ZnO wurtzite crystalline phase. The SEM analysis showed that the morphological properties changed significantly, the micro-aggregates disappeared, and agglomeration was reduced after modification of ZnO. The ZnO optical bandgap (3.22 eV) reduced after the doping process, these being ZnO:Co (2.39 eV) and ZnO:Co (3.01 eV). Finally, the kinetic results of methylene blue photodegradation reached 62.6% for ZnO:Co thin films and 42.5% for ZnO:Cu thin films.
publishDate	2020
dc.date.issued.none.fl_str_mv	2020-05-11
dc.date.submitted.none.fl_str_mv	2020-03-14
dc.date.accessioned.none.fl_str_mv	2022-11-15T21:23:30Z
dc.date.available.none.fl_str_mv	2022-11-15T21:23:30Z
dc.type.coarversion.fl_str_mv	http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.coar.fl_str_mv	http://purl.org/coar/resource_type/c_2df8fbb1
dc.type.driver.spa.fl_str_mv	info:eu-repo/semantics/article
dc.type.hasVersion.spa.fl_str_mv	info:eu-repo/semantics/publishedVersion
dc.type.spa.spa.fl_str_mv	Artículo
status_str	publishedVersion
dc.identifier.uri.none.fl_str_mv	https://hdl.handle.net/20.500.12834/989
dc.identifier.doi.none.fl_str_mv	10.3390/catal10050528
dc.identifier.instname.spa.fl_str_mv	Universidad del Atlántico
dc.identifier.reponame.spa.fl_str_mv	Repositorio Universidad del Atlántico
url	https://hdl.handle.net/20.500.12834/989
identifier_str_mv	10.3390/catal10050528 Universidad del Atlántico Repositorio Universidad del Atlántico
dc.language.iso.spa.fl_str_mv	eng
language	eng
dc.rights.coar.fl_str_mv	http://purl.org/coar/access_right/c_abf2
dc.rights.uri.*.fl_str_mv	http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.cc.*.fl_str_mv	Attribution-NonCommercial 4.0 International
dc.rights.accessRights.spa.fl_str_mv	info:eu-repo/semantics/openAccess
rights_invalid_str_mv	http://creativecommons.org/licenses/by-nc/4.0/ Attribution-NonCommercial 4.0 International http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv	openAccess
dc.format.mimetype.spa.fl_str_mv	application/pdf
dc.publisher.place.spa.fl_str_mv	Barranquilla
dc.publisher.sede.spa.fl_str_mv	Sede Norte
dc.source.spa.fl_str_mv	MDPI
institution	Universidad del Atlántico
bitstream.url.fl_str_mv	https://repositorio.uniatlantico.edu.co/bitstream/20.500.12834/989/1/catal10050528.pdf https://repositorio.uniatlantico.edu.co/bitstream/20.500.12834/989/2/license_rdf https://repositorio.uniatlantico.edu.co/bitstream/20.500.12834/989/3/license.txt
bitstream.checksum.fl_str_mv	2981ca937f5ff5040af06de1b72360f4 24013099e9e6abb1575dc6ce0855efd5 67e239713705720ef0b79c50b2ececca
bitstream.checksumAlgorithm.fl_str_mv	MD5 MD5 MD5
repository.name.fl_str_mv	DSpace de la Universidad de Atlántico
repository.mail.fl_str_mv	sysadmin@mail.uniatlantico.edu.co
_version_	1814203416998576128
spelling	Vallejo, William515f7221-38e6-4d06-8d1f-bf35a10ac2bbCantillo, AlvaroSalazar, BriggitteDiaz-Uribe, CarlosRamos, WilkendryRomero, EduardHurtado, Mikel2022-11-15T21:23:30Z2022-11-15T21:23:30Z2020-05-112020-03-14https://hdl.handle.net/20.500.12834/98910.3390/catal10050528Universidad del AtlánticoRepositorio Universidad del AtlánticoWe synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film deposition. The physicochemical characterization of the catalysts was carried out by Raman spectroscopy, scanning electron microscopy (SEM), X-ray di raction, and di use reflectance measurements. The photocatalytic activity was studied under visible irradiation in aqueous solution, and kinetic parameters were determined by pseudo-first-order fitting. The Raman spectra results evinced the doping process and suggested the formation of heterojunctions for both dopants. The structural di raction patterns indicated that the catalysts were polycrystalline and demonstrated the presence of a ZnO wurtzite crystalline phase. The SEM analysis showed that the morphological properties changed significantly, the micro-aggregates disappeared, and agglomeration was reduced after modification of ZnO. The ZnO optical bandgap (3.22 eV) reduced after the doping process, these being ZnO:Co (2.39 eV) and ZnO:Co (3.01 eV). Finally, the kinetic results of methylene blue photodegradation reached 62.6% for ZnO:Co thin films and 42.5% for ZnO:Cu thin films.application/pdfenghttp://creativecommons.org/licenses/by-nc/4.0/Attribution-NonCommercial 4.0 Internationalinfo:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2MDPIArticle Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible IrradiationPúblico generalthin films; ZnO; doping; heterogeneous photocatalysisinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArtículohttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_2df8fbb1BarranquillaSede Norte1. Lellis, B.; Fávaro-Polonio, C.Z.; Pamphile, J.A.; Polonio, J.C. E ects of textile dyes on health and the environment and bioremediation potential of living organisms. Biotechnol. Res. Innov. 2019, 3, 275–290.2. Hassan, M.M.; Carr, C.M. A critical review on recent advancements of the removal of reactive dyes from dyehouse e uent by ion-exchange adsorbents. Chemosphere 2018, 209, 201–219.3. Fabbri, D.; López-Muñoz, M.J.; Daniele, A.; Medana, C.; Calza, P. Photocatalytic abatement of emerging pollutants in pure water and wastewater e uent by TiO 2 and Ce-ZnO: Degradation kinetics and assessment of transformation products. Photochem. Photobiol. Sci. 2019, 18, 845–852.4. Zelinski, D.W.; dos Santos, T.P.M.; Takashina, T.A.; Leifeld, V.; Igarashi-Mafra, L. Photocatalytic Degradation of Emerging Contaminants: Artificial Sweeteners. Water. Air. Soil Pollut. 2018, 229, 1–12.5. Regulska, E.; Rivera-Nazario, D.; Karpinska, J.; Plonska-Brzezinska, M.; Echegoyen, L. Zinc Porphyrin-Functionalized Fullerenes for the Sensitization of Titania as a Visible-Light Active Photocatalyst: River Waters and Wastewaters Remediation. Molecules 2019, 24, 1118.6. Ansari, S.A.; Ansari, S.G.; Foaud, H.; Cho, M.H. Facile and sustainable synthesis of carbon-doped ZnO nanostructures towards the superior visible light photocatalytic performance. New J. Chem. 2017, 41, 9314–9320.7. Naldoni, A.; Riboni, F.; Guler, U.; Boltasseva, A.; Shalaev, V.M.; Kildishev, A.V. Solar-Powered Plasmon-Enhanced Heterogeneous Catalysis. Nanophotonics 2016, 5, 112–133.8. Sedghi, R.; Heidari, F. A novel & e ective visible light-driven TiO2/magnetic porous graphene oxide nanocomposite for the degradation of dye pollutants. RSC Adv. 2016, 6, 49459–49468.9. Balu, S.; Uma, K.; Pan, G.T.; Yang, T.C.K.; Ramaraj, S.K. Degradation of methylene blue dye in the presence of visible light using SiO2@ -Fe2O3 nanocomposites deposited on SnS2 flowers. Materials 2018, 11, 1030.10. Loh, K.; Gaylarde, C.C.; Shirakawa, M.A. Photocatalytic activity of ZnO and TiO2 ‘nanoparticles’ for use in cement mixes. Constr. Build. Mater. 2018, 167, 853–859.11. Saravanakkumar, D.; Oualid, H.A.; Brahmi, Y.; Ayeshamariam, A.; Karunanaithy, M.; Saleem, A.M.; Kaviyarasu, K.; Sivaranjani, S.; Jayachandran, M. Synthesis and characterization of CuO/ZnO/CNTs thin films on copper substrate and its photocatalytic applications. OpenNano 2019, 4, 100025.12. Zyoud, A.; Zaatar, N.; Saadeddin, I.; Helal, M.H.; Campet, G.; Hakim, M.; Park, D.; Hilal, H.S. Alternative natural dyes in water purification: Anthocyanin as TiO2-sensitizer in methyl orange photo-degradation. Solid State Sci. 2011, 13, 1268–1275.13. Elango, G.; Roopan, S.M. E cacy of SnO2 nanoparticles toward photocatalytic degradation of methylene blue dye. J. Photochem. Photobiol. B Biol. 2016, 155, 34–38.14. Das, A.; Malakar, P.; Nair, R.G. Engineering of ZnO nanostructures for e cient solar photocatalysis. Mater. Lett. 2018, 219, 76–80.15. Schumann, J.; Eichelbaum, M.; Lunkenbein, T.; Thomas, N.; Álvarez Galván, M.C.; Schlögl, R.; Behrens, M. Promoting Strong Metal Support Interaction: Doping ZnO for Enhanced Activity of Cu/ZnO:M (M = Al, Ga, Mg) Catalysts. ACS Catal. 2015, 5, 3260–3270.16. Kumari,V.; Mittal, A.; Jindal, J.; Yadav, S.; Kumar, N. S-, N- and C-doped ZnO as semiconductor photocatalysts: A review. Front. Mater. Sci. 2019, 13, 1–22.17. Bharat, T.C.; Mondal, S.; Gupta, H.S.; Singh, P.K.; Das, A.K. Synthesis of Doped Zinc Oxide Nanoparticles: A Review. Mater. Today Proc. 2019, 11, 767–775.18. Poornaprakash, U.; Chalapathi, K.; Subramanyam, S.V.; Prabhakar Vattikuti, Y.; Shun, S.P. E ects of Ce incorporation on the structural, morphological, optical, magnetic, and photocatalytic characteristics of ZnO nanoparticles. Mater. Res. Express 2019, 6, 105356.19. Poornaprakash, B.; Subramanyam, K.; Vattikuti, S.V.P.; Pratap Reddy, M.S. Achieving enhanced ferromagnetism in ZnTbO nanoparticles through Cu co-doping. Ceram. Int. 2019, 45, 16347–1635220. Poornaprakash, B.; Chalapathi, U.; Poojitha, P.T.; Vattikuti, S.V.P.; Reddy, M.S.P. (Al, Cu) Co-doped ZnS nanoparticles: Structural, chemical, optical, and photocatalytic properties. J. Mater. Sci. Mater. Electron. 2019, 30, 9897–9902.21. Kaur, M.; Umar, A.; Mehta, S.K.; Singh, S.; Kansal, S.K.; Fouad, H.; Alothman, O.Y. Rapid Solar-Light Driven Superior Photocatalytic Degradation of Methylene Blue Using MoS2-ZnO Heterostructure Nanorods Photocatalyst. Material 2018, 11, 2254.22. Vallejo, W.; Díaz-Uribe, C.; Rios, K. Methylene Blue Photocatalytic Degradation under Visible Irradiation on In2S3 Synthesized by Chemical Bath Deposition. Adv. Phys. Chem. 2017, 2017, 1–5.23. Subash, B.; Krishnakumar, B.; Swaminathan, M.; Shanthi, M. Highly E cient, Solar Active, and Reusable Photocatalyst: Zr-Loaded Ag–ZnO for Reactive Red 120 Dye Degradation with Synergistic E ect and Dye-Sensitized Mechanism. Langmuir 2013, 29, 939–949.24. Aby, H.; Kshirsagar, A.; Pk, K. Plasmon Mediated Photocatalysis by Solar Active Ag/ZnO Nanostructures: Degradation of Organic Pollutants in Aqueous Conditions. J. Mater Sci Nanotechnol 2016, 4.25. Díaz-Uribe, C.; Viloria, J.; Cervantes, L.; Vallejo,W.; Navarro, K.; Romero, E.; Quiñones, C. Photocatalytic Activity of Ag-TiO2 Composites Deposited by Photoreduction under UV Irradiation. Int. J. Photoenergy 2018, 2018, 1–8.26. Chen, L.; Tran, T.T.; Huang, C.; Li, J.; Yuan, L.; Cai, Q. Synthesis and photocatalytic application of Au/Ag nanoparticle-sensitized ZnO films. Appl. Surf. Sci. 2013, 273, 82–88.27. Poornaprakash, B.; Chalapathi, U.; Poojitha, P.T.; Vattikuti, S.V.P.; Park, S.H. Co-Doped ZnS Quantum Dots: Structural, Optical, Photoluminescence, Magnetic, and Photocatalytic Properties. J. Supercond. Nov. Magn. 2020, 33, 539–544.28. Youssef, Z.; Colombeau, L.; Yesmurzayeva, N.; Baros, F.; Vanderesse, R.; Hamieh, T.; Toufaily, J.; Frochot, C.; Roques-Carmes, T.; Acherar, S. Dye-sensitized nanoparticles for heterogeneous photocatalysis: Cases studies with TiO2, ZnO, fullerene and graphene for water purification. Dye. Pigment. 2018, 159, 49–71.29. Vallejo, W.; Diaz-Uribe, C.; Cantillo, Á. Methylene blue photocatalytic degradation under visible irradiation on TiO2 thin films sensitized with Cu and Zn tetracarboxy-phthalocyanines. J. Photochem. Photobiol. A Chem. 2015, 299, 80–86.30. Vallejo,W.; Rueda, A.; Díaz-Uribe, C.; Grande, C.; Quintana, P. Photocatalytic activity of graphene oxide–TiO2 thin films sensitized by natural dyes extracted from Bactris guineensis. R. Soc. Open Sci. 2019, 6, 181824.31. Diaz-Uribe, C.; Vallejo,W.; Camargo, G.; Muñoz-Acevedo, A.; Quiñones, C.; Schott, E.; Zarate, X. Potential use of an anthocyanin-rich extract from berries of Vaccinium meridionale Swartz as sensitizer for TiO2 thin films—An experimental and theoretical study. J. Photochem. Photobiol. A Chem. 2019, 384, 112050.32. Hamid, S.B.A.; Teh, S.J.; Lai, C.W. PhotocatalyticWater Oxidation on ZnO: A Review. Catalysts 2017, 7, 93.33. Türkyılmaz, ¸S.¸S.; Güy, N.; Özacar, M. Photocatalytic e ciencies of Ni, Mn, Fe and Ag doped ZnO nanostructures synthesized by hydrothermal method: The synergistic/antagonistic e ect between ZnO and metals. J. Photochem. Photobiol. A Chem. 2017, 341, 39–50.34. Bouzid, H.; Faisal, M.; Harraz, F.A.; Al-Sayari, S.A.; Ismail, A.A. Synthesis of mesoporous Ag/ZnO nanocrystals with enhanced photocatalytic activity. Catal. Today 2015, 252, 20–26.35. Altintas Yildirim, O.; Arslan, H.; Sönmezo˘ glu, S. Facile synthesis of cobalt-doped zinc oxide thin films for highly e cient visible light photocatalysts. Appl. Surf. Sci. 2016, 390, 111–121.36. Ahmad, M.; Ahmed, E.; Ahmed, W.; Elhissi, A.; Hong, Z.L.; Khalid, N.R. Enhancing visible light responsive photocatalytic activity by decorating Mn-doped ZnO nanoparticles on graphene. Ceram. Int. 2014, 40, 10085–10097.37. Polat, ˙I.; Yılmaz, S.; Altın, ˙I.; Bacaksız, E.; Sökmen, M. The influence of Cu-doping on structural, optical and photocatalytic properties of ZnO nanorods. Mater. Chem. Phys. 2014, 148, 528–532.38. Mittal, M.; Sharma, M.; Pandey, O.P. UV–Visible light induced photocatalytic studies of Cu doped ZnO nanoparticles prepared by co-precipitation method. Sol. Energy 2014, 110, 386–397.39. Kuriakose, S.; Satpati, B.; Mohapatra, S. Highly e cient photocatalytic degradation of organic dyes by Cu doped ZnO nanostructures. Phys. Chem. Chem. Phys. 2015, 17, 25172–25181.40. Thennarasu, G.; Sivasamy, A. Metal ion doped semiconductor metal oxide nanosphere particles prepared by soft chemical method and its visible light photocatalytic activity in degradation of phenol. Powder Technol. 2013, 250, 1–12.41. Lu, Y.; Lin, Y.; Wang, D.; Wang, L.; Xie, T.; Jiang, T. A high performance cobalt-doped ZnO visible light photocatalyst and its photogenerated charge transfer properties. Nano Res. 2011, 4, 1144–1152.42. Kuriakose, S.; Satpati, B.; Mohapatra, S. Enhanced photocatalytic activity of Co doped ZnO nanodisks and nanorods prepared by a facile wet chemical method. Phys. Chem. Chem. Phys. 2014, 16, 12741.43. Poornaprakash, B.; Chalapathi, U.; Subramanyam, K.; Vattikuti, S.V.P.; Park, S.H. Wurtzite phase Co-doped ZnO nanorods: Morphological, structural, optical, magnetic, and enhanced photocatalytic characteristics. Ceram. Int. 2020, 46, 2931–2939.44. Rajbongshi, B.M.; Samdarshi, S.K. Cobalt-doped zincblende–wurtzite mixed-phase ZnO photocatalyst nanoparticles with high activity in visible spectrum. Appl. Catal. B Environ. 2014, 144, 435–441.45. Rajbongshi, B.M.; Samdarshi, S.K. ZnO and Co-ZnO nanorods—Complementary role of oxygen vacancy in photocatalytic activity of under UV and visible radiation flux. Mater. Sci. Eng. B 2014, 182, 21–28.46. Muchuweni, E.; Sathiaraj, T.S.; Nyakotyo, H. Synthesis and characterization of zinc oxide thin films for optoelectronic applications. Heliyon 2017, 3, e00285.47. Yuhas, B.D.; Zitoun, D.O.; Pauzauskie, P.J.; He, R.; Yang, P. Transition-Metal Doped Zinc Oxide Nanowires. Angew. Chemie 2006, 118, 434–437.48. Wang, X.; Sø, L.; Su, R.; Wendt, S.; Hald, P.; Mamakhel, A.; Yang, C.; Huang, Y.; Iversen, B.B.; Besenbacher, F. The influence of crystallite size and crystallinity of anatase nanoparticles on the photo-degradation of phenol. J. Catal. 2014, 310, 100–108.49. Lima, M.K.; Fernandes, D.M.; Silva, M.F.; Baesso, M.L.; Neto, A.M.; de Morais, G.R.; Nakamura, C.V.; de Oliveira Caleare, A.; Hechenleitner, A.A.W.; Pineda, E.A.G. Co-doped ZnO nanoparticles synthesized by an adapted sol–gel method: E ects on the structural, optical, photocatalytic and antibacterial properties. J. Sol-Gel Sci. Technol. 2014, 72, 301–309.50. Calleja, J.M.; Cardona, M. Resonant Raman scattering in ZnO. Phys. Rev. B 1977, 16, 3753–3761.51. Cuscó, R.; Alarcón-Lladó, E.; Ibáñez, J.; Artús, L.; Jiménez, J.; Wang, B.; Callahan, M.J. Temperature dependence of Raman scattering in ZnO. Phys. Rev. B 2007, 75, 165202.52. Wang, W.; Zhou, Q.; Fei, X.; He, Y.; Zhang, P.; Zhang, G.; Peng, L.; Xie, W. Synthesis of CuO nano- and micro-structures and their Raman spectroscopic studies. CrystEngComm 2010, 12, 2232.53. Winiarski, J.; Tylus, W.; Szczygieł, B. EIS and XPS investigations on the corrosion mechanism of ternary Zn–Co–Mo alloy coatings in NaCl solution. Appl. Surf. Sci. 2016, 364, 455–466.54. Xuan, H.; Yao, C.; Hao, X.; Liu, C.; Ren, J.; Zhu, Y.; Xu, C.; Ge, L. Fluorescence enhancement with one-dimensional photonic crystals/nanoscaled ZnO composite thin films. Colloids Surfaces A Physicochem. Eng. Asp. 2016, 497, 251–256.55. Hasnidawani, J.N.; Azlina, H.N.; Norita, H.; Bonnia, N.N.; Ratim, S.; Ali, E.S. Synthesis of ZnO Nanostructures Using Sol-Gel Method. Procedia Chem. 2016, 19, 211–216.56. Pourrahimi, A.M.; Liu, D.; Pallon, L.K.H.; Andersson, R.L.; Martínez Abad, A.; Lagarón, J.-M.; Hedenqvist, M.S.; Ström, V.; Gedde, U.W.; Olsson, R.T. Water-based synthesis and cleaning methods for high purity ZnO nanoparticles–comparing acetate, chloride, sulphate and nitrate zinc salt precursors. RSC Adv. 2014, 4, 35568–35577.57. Simmons, E.L. Relation of the Di use Reflectance Remission Function to the Fundamental Optical Parameters. Opt. Acta Int. J. Opt. 1972, 19, 845–851.58. Pal, M.; Pal, U.; Jiménez, J.M.G.Y.; Pérez-Rodríguez, F. E ects of crystallization and dopant concentration on the emission behavior of TiO2:Eu nanophosphors. Nanoscale Res. Lett. 2012, 7, 1.59. Viezbicke, B.D.; Patel, S.; Davis, B.E.; Birnie, D.P. Evaluation of the Tauc method for optical absorption edge determination: ZnO thin films as a model system. Phys. Status Solidi 2015, 252, 1700–1710.60. Srikant, V.; Clarke, D.R. On the optical band gap of zinc oxide. J. Appl. Phys. 1998, 83, 5447–5451.61. El-Atab, N.; Chowdhury, F.; Ulusoy, T.G.; Ghobadi, A.; Nazirzadeh, A.; Okyay, A.K.; Nayfeh, A. ~3-nm ZnO Nanoislands Deposition and Application in Charge Trapping Memory Grown by Single ALD Step. Sci. Rep. 2016, 6, 38712.62. Liu, X.-C.; Shi, E.-W.; Chen, Z.-Z.; Zhang, H.-W.; Song, L.-X.; Wang, H.; Yao, S.-D. Structural, optical and magnetic properties of Co-doped ZnO films. J. Cryst. Growth 2006, 296, 135–140. [63. Qiu, X.; Li, G.; Sun, X.; Li, L.; Fu, X. Doping e ects of Co 2+ ions on ZnO nanorods and their photocatalytic properties. Nanotechnology 2008, 19, 215703.64. Ramya, E.; Rao, M.V.; Jyothi, L.; Rao, D.N. Photoluminescence and Nonlinear Optical Properties of Transition Metal (Ag, Ni, Mn) Doped ZnO Nanoparticles. J. Nanosci. Nanotechnol. 2018, 18, 7072–7077.65. Xu, H.; Shi, M.; Liang, C.;Wang, S.; Xia, C.; Xue, C.; Hai, Z.; Zhuiykov, S. E ect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p-Co3O4/n-ZnO Heterostructures. Nanoscale Res. Lett. 2018, 13, 195.66. Konstantinou, I.K.; Albanis, T.A. TiO2—Assisted photocatalytic degradation of azo dyes in aqueous solution: Kinetic and mechanistic investigations A review. Appl. Catal. B Environ. 2004, 49, 1–14.67. Jayswal, S.; Moirangthem, R.S. Construction of a solar spectrum active SnS/ZnO p–n heterojunction as a highly e cient photocatalyst: The e ect of the sensitization process on its performance. New J. Chem. 2018, 42, 13689–13701.68. Jun Park, S.; Sankar Das, G.; Schütt, F.; Adelung, R.; Kumar Mishra, Y.; Malika Tripathi, K.; Kim, T. Visible-light photocatalysis by carbon-nano-onion-functionalized ZnO tetrapods: Degradation of 2,4-dinitrophenol and a plant-model-based ecological assessment. Asia Mater. 2019, 11, 1–13.69. Vallejo, W.; Cantillo, A.; Dias-Uribe, C. Methylene Blue Photodegradation under Visible Irradiation on Ag-Doped ZnO Thin Films. Int. J. Photoenergy 2020, 2020, 112.70. Prasad, C.; Tang, H.; Liu, Q.Q.; Zulfiqar, S.; Shah, S.; Bahadur, I. An overview of semiconductors/layered double hydroxides composites: Properties, synthesis, photocatalytic and photoelectrochemical applications. J. Mol. Liq. 2019, 289, 111114.71. Hernández-Alonso, M.D.; Fresno, F.; Suárez, S.; Coronado, J.M. Development of alternative photocatalysts to TiO2: Challenges and opportunities. Energy Environ. Sci. 2009, 2, 1231–1257.72. Pérez, J.A.; Gallego, J.L.; Wilson Stiven Roman, H.R.L. Zinc Oxide Nanostructured Thin Films. Sci. Tech. 2008, 39, 416–421.73. Ramírez Vinasco, D.; Vera, L.; Patricia, L.; Riascos Landázuri, H. Zn1-xMnxO Thin Films. Sci. Tech. 2009, 41, 273–278.74. Quiñones, C.; Ayala, J.; Vallejo, W. Methylene blue photoelectrodegradation under UV irradiation on Au/Pd-modified TiO2 films. Appl. Surf. Sci. 2010, 257, 367–371.http://purl.org/coar/resource_type/c_6501ORIGINALcatal10050528.pdfcatal10050528.pdfapplication/pdf3483031https://repositorio.uniatlantico.edu.co/bitstream/20.500.12834/989/1/catal10050528.pdf2981ca937f5ff5040af06de1b72360f4MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.uniatlantico.edu.co/bitstream/20.500.12834/989/2/license_rdf24013099e9e6abb1575dc6ce0855efd5MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81306https://repositorio.uniatlantico.edu.co/bitstream/20.500.12834/989/3/license.txt67e239713705720ef0b79c50b2ececcaMD5320.500.12834/989oai:repositorio.uniatlantico.edu.co:20.500.12834/9892022-11-15 16:23:31.369DSpace de la Universidad de Atlánticosysadmin@mail.uniatlantico.edu.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

Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation

Publicaciones similares