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Contributions of morphological and structural parameters at different hierarchical morphology levels to photocatalytic activity of mesoporous nanostructured ZnO

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dc.title Contributions of morphological and structural parameters at different hierarchical morphology levels to photocatalytic activity of mesoporous nanostructured ZnO en
dc.contributor.author Sedlák, Jakub
dc.contributor.author Kuřitka, Ivo
dc.contributor.author Masař, Milan
dc.contributor.author Machovský, Michal
dc.contributor.author Urbánek, Pavel
dc.contributor.author Bažant, Pavel
dc.contributor.author Janota, Pavel
dc.contributor.author Dvořáčková, Marie
dc.relation.ispartof Applied Surface Science
dc.identifier.issn 0169-4332 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2020
utb.relation.volume 513
dc.type article
dc.language.iso en
dc.publisher Elsevier B.V.
dc.identifier.doi 10.1016/j.apsusc.2020.145773
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0169433220305298
dc.subject Hierarchical en
dc.subject Photocatalysis en
dc.subject ZnO en
dc.subject Mesoporous en
dc.subject Self-diffusion coefficient en
dc.subject Grain growth en
dc.description.abstract Hierarchical mesoporous zinc oxide (ZnO) polyhedral micro-lumps were prepared by annealing zinc oxalate dihydrate (ZnC2O4 ⋅ 2H2O) precursor in an air atmosphere at various temperatures. The development of the mesoporous nanoarchitecture of the ZnO micro-lumps was studied by XRD analysis corroborated with the analysis of their specific surface area utilizing nitrogen sorption via BET method. Investigations by high-resolution SEM revealed a morphology resembling calcined mesocrystals. A description of the sintering process and the crystallite growth is given together with an analysis of the activation energy of the grain and crystallite growth, respectively. The self-diffusion coefficient, diffusion mechanisms, and its activation energy involved in the growth of crystallites were identified. The crystallite size and the specific surface area can be tuned by varying the annealing temperature, while the UV–vis and PL spectra remain nearly unchanged. The morphological and structural parameters are correlated with photocatalytic activity evaluated by the UV discolouration of the Methyl violet 2B. An interpretational framework, including three hierarchical morphology levels of the micro-lumps, was developed. The interplay between the contributions of the different promoting and impeding effects emerging on various levels can explain the non-monotonous dependence of the photocatalytic activity on the catalyst annealing temperature. © 2020 en
utb.faculty University Institute
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1009601
utb.identifier.obdid 43881898
utb.identifier.scopus 2-s2.0-85079606305
utb.identifier.wok 000523184600020
utb.identifier.coden ASUSE
utb.source j-scopus
dc.date.accessioned 2020-03-12T14:04:36Z
dc.date.available 2020-03-12T14:04:36Z
dc.description.sponsorship Operational Program Research and Development for Innovations - European Regional Development Fund (ERDF)European Union (EU); national budget of the Czech Republic, within the project Centre of Polymer Systems [CZ.1.05/2.1.00/03.0111]; Ministry of Education, Youth and Sports of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic [LO1504]; Internal Grant Agency of Tomas Bata University in Zlin [IGA/FT/2014/008, IGA/CPS/2017/007, IGA/CPS/2018/007, IGA/CPS/2019/007]
utb.ou Centre of Polymer Systems
utb.ou Department of Environmental Protection Engineering
utb.contributor.internalauthor Sedlák, Jakub
utb.contributor.internalauthor Kuřitka, Ivo
utb.contributor.internalauthor Masař, Milan
utb.contributor.internalauthor Machovský, Michal
utb.contributor.internalauthor Urbánek, Pavel
utb.contributor.internalauthor Bažant, Pavel
utb.contributor.internalauthor Janota, Pavel
utb.contributor.internalauthor Dvořáčková, Marie
utb.fulltext.affiliation Jakub Sedlak a, Ivo Kuritka a⁎, Milan Masar a, Michal Machovsky a, Pavel Urbanek a, Pavel Bazant a, Pavel Janota b, Marie Dvorackova b a Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, tr. Tomase Bati 5678, 760 01 Zlin, Czech Republic b Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 275, 760 01 Zlin, Czech Republic ⁎ Corresponding author. E-mail addresses: kubasedlak@gmail.com (J. Sedlak), kuritka@utb.cz (I. Kuritka), masar@utb.cz (M. Masar), machovsky@utb.cz (M. Machovsky), urbanek@utb.cz (P. Urbanek), bazant@utb.cz (P. Bazant), pave.janota@gmail.cz (P. Janota), dvorackova@utb.cz (M. Dvorackova).
utb.fulltext.dates Received 26 August 2019 Received in revised form 21 January 2020 Accepted 13 February 2020 Available online 14 February 2020
utb.fulltext.sponsorship This article was written with the support of Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund (ERDF) and the national budget of the Czech Republic, within the project Centre of Polymer Systems (reg. number: CZ.1.05/2.1.00/03.0111). This work was also funded by the Ministry of Education, Youth and Sports of the Czech Republic - Program NPU I (LO1504). The initial work of J. S. was supported by the Internal Grant Agency of Tomas Bata University in Zlin; contract grant number: IGA/FT/ 2014/008. The work of M. Mas. was supported by the Internal Grant Agency of Tomas Bata University in Zlin; contract grant numbers: IGA/CPS/2017/ 007, IGA/CPS/2018/007, and IGA/CPS/2019/007.
utb.wos.affiliation [Sedlak, Jakub; Kuritka, Ivo; Masar, Milan; Machovsky, Michal; Urbanek, Pavel; Bazant, Pavel] Tomas Bata Univ Zlin, Univ Inst, Ctr Polymer Syst, Tr Tomase Bati 5678, Zlin 76001, Czech Republic; [Janota, Pavel; Dvorackova, Marie] Tomas Bata Univ Zlin, Fac Technol, Dept Environm Protect Engn, Vavreckova 275, Zlin 76001, Czech Republic
utb.scopus.affiliation Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, tr. Tomase Bati 5678, 760 01 Zlin, Czech Republic; Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 275, 760 01 Zlin, Czech Republic
utb.fulltext.projects CZ.1.05/2.1.00/03.0111
utb.fulltext.projects LO1504
utb.fulltext.projects IGA/FT/ 2014/008
utb.fulltext.projects IGA/CPS/2017/ 007
utb.fulltext.projects IGA/CPS/2018/007
utb.fulltext.projects IGA/CPS/2019/007
utb.fulltext.faculty University Institute
utb.fulltext.faculty University Institute
utb.fulltext.faculty University Institute
utb.fulltext.faculty University Institute
utb.fulltext.faculty University Institute
utb.fulltext.faculty University Institute
utb.fulltext.faculty Faculty of Technology
utb.fulltext.faculty Faculty of Technology
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Department of Environmental Protection Engineering
utb.fulltext.ou Department of Environmental Protection Engineering
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