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Synthesis and characterization of ZnO nanorice decorated TiO2 nanotubes for enhanced photocatalytic activity

ArticleAçık Erişim

Özet

In present study, we report on the synthesis of TiO2/ZnO nanocomposite (TZN) films for potential applications as photocatalyst in heterogeneous photo-degradation of Rhodamine B under UVA irradiations. ZnO nano-rice decorated TiO2 nanotubes were successfully synthesized via a facile and effective two-step route. Firstly, TiO2 nanotube arrays were grown by anodic oxidation. Afterwards, ZnO rice shaped nanostructures were decorated by successive chemical bath deposition cycles of 2, 4, 6 and 8. The XRD, FESEM, XPS and μ-XRF results showed that the rice-shaped wurtzite ZnO nanoparticles with dimensions of ca. 1μm × 100 nm were homogeneously distributed on the anatase TiO2 nanotube arrays with highly uniform in the presence of in zinc nitrate hexahydrate and hexamethylenetetramine precursors with 1:4 M ratios. The photodegradation results showed that the photocatalytic activity of TZN films were gradually increased in parallel with the number of ZnO deposition cycles and the best performance was found for TNZ8 film. The RhB photodegradation efficiency was determined to be 65% for bare TiO2 whereas 95% degradation of Rhodamine B was occurred for TNZ8 film which follow pseudo-first-order kinetic. In addition, TZN films exhibited good photostability after four reuses. Also, photocatalytic activity of TZN were tested under UVC, UVB, UVA and visible region irradiations for comparative purposes. © 2018 Elsevier Ltd

Anahtar Kelimeler

Anodic oxidationChemical bath depositionPhotocatalysisTiO<sub>2</sub> nanotubesZnO nano-riceDepositionII-VI semiconductorsIrradiationNanocomposite filmsNanotubesPhotocatalystsPhotodegradationTitanium dioxideYarnZinc oxideZinc sulfideZnO nanoparticlesChemical-bath depositionDeposition cyclesPhotocatalytic activitiesPseudo-first order kineticsRhb photodegradationSynthesis and characterizationsTiO2 nanotube arraysTiO2 nanotubesRhodium compounds
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Tam Kayıt
AlanDeğerDil
dc.contributor.authorBozkurt Çırak, Burcu
dc.contributor.authorCaglar, Bulent
dc.contributor.authorKılınç, Tuba
dc.contributor.authorMorkoç Karadeniz, Sibel
dc.contributor.authorErdoğan, Yaşar
dc.contributor.authorKılıç, Selçuk
dc.contributor.authorKahveci, Enver
dc.contributor.authorErcan Ekinci, Ali
dc.contributor.authorÇırak, Çağrı
dc.date.accessioned2026-10-18T20:28:52.700323214Z
dc.date.available2026-10-18T20:28:52.700323214Z
dc.date.issued2019
dc.description.abstractIn present study, we report on the synthesis of TiO2/ZnO nanocomposite (TZN) films for potential applications as photocatalyst in heterogeneous photo-degradation of Rhodamine B under UVA irradiations. ZnO nano-rice decorated TiO2 nanotubes were successfully synthesized via a facile and effective two-step route. Firstly, TiO2 nanotube arrays were grown by anodic oxidation. Afterwards, ZnO rice shaped nanostructures were decorated by successive chemical bath deposition cycles of 2, 4, 6 and 8. The XRD, FESEM, XPS and μ-XRF results showed that the rice-shaped wurtzite ZnO nanoparticles with dimensions of ca. 1μm × 100 nm were homogeneously distributed on the anatase TiO2 nanotube arrays with highly uniform in the presence of in zinc nitrate hexahydrate and hexamethylenetetramine precursors with 1:4 M ratios. The photodegradation results showed that the photocatalytic activity of TZN films were gradually increased in parallel with the number of ZnO deposition cycles and the best performance was found for TNZ8 film. The RhB photodegradation efficiency was determined to be 65% for bare TiO2 whereas 95% degradation of Rhodamine B was occurred for TNZ8 film which follow pseudo-first-order kinetic. In addition, TZN films exhibited good photostability after four reuses. Also, photocatalytic activity of TZN were tested under UVC, UVB, UVA and visible region irradiations for comparative purposes. © 2018 Elsevier Ltd
dc.description.sponsorshipThe authors gratefully acknowledge the support from Central Research Laboratory of Erzincan Binali Yıldırım University .
dc.identifier.doi10.1016/j.materresbull.2018.09.039
dc.identifier.eissn1873-4227
dc.identifier.endpage167
dc.identifier.issn0025-5408
dc.identifier.scopus2-s2.0-85054090237
dc.identifier.startpage160
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/14100
dc.identifier.volume109
dc.identifier.wosWOS:000453642400021
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofMaterials Research Bulletin
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAnodic oxidation
dc.subjectChemical bath deposition
dc.subjectPhotocatalysis
dc.subjectTiO<sub>2</sub> nanotubes
dc.subjectZnO nano-rice
dc.subjectDeposition
dc.subjectII-VI semiconductors
dc.subjectIrradiation
dc.subjectNanocomposite films
dc.subjectNanotubes
dc.subjectPhotocatalysts
dc.subjectPhotodegradation
dc.subjectTitanium dioxide
dc.subjectYarn
dc.subjectZinc oxide
dc.subjectZinc sulfide
dc.subjectZnO nanoparticles
dc.subjectChemical-bath deposition
dc.subjectDeposition cycles
dc.subjectPhotocatalytic activities
dc.subjectPseudo-first order kinetics
dc.subjectRhb photodegradation
dc.subjectSynthesis and characterizations
dc.subjectTiO2 nanotube arrays
dc.subjectTiO2 nanotubes
dc.subjectRhodium compounds
dc.titleSynthesis and characterization of ZnO nanorice decorated TiO2 nanotubes for enhanced photocatalytic activity
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus76
rdl.citation.wos65
rdl.source.indexSCOPUS
rdl.source.indexWOS
rdl.wos.indexScience Citation Index Expanded (SCI-EXPANDED)