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Title:Tailoring the crystalline and amorphous phase ratios of TiO2 through the use of organic additives during hydrothermal synthesis
Authors:ID Rozman, Nejc (Author)
ID Sever Škapin, Andrijana (Author)
ID Tobaldi, David Maria (Author)
ID Dražić, Goran (Author)
ID Nadrah, Peter (Author)
Files:URL URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0272884224029729#bfn1
 
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Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:The photocatalytic properties of TiO2 are primarily determined by its crystallinity and crystalline phase ratios. To improve the photocatalytic properties of TiO2, greater control over the formation of crystalline and amorphous phases during synthesis is therefore required. In this study, we demonstrate how the addition of minute amounts of three organic compounds (isopropanol, acetone and acetic acid) during hydrothermal treatment affects the amorphous and crystalline phase ratios: the addition of isopropanol or acetone accelerates the phase transition from anatase and brookite to rutile, whereas the addition of acetic acid inhibits the transformation of anatase to rutile, increasing the content of amorphous phase compared to samples where no organic compound was added. We show that the combination of the organic compound added, along with the duration of the hydrothermal treatment, can be used to tailor the phase composition of TiO2, so as to obtain either: i) TiO2 with a high content of both rutile and amorphous phase, ii) TiO2 with a high rutile content and iii) TiO2 with different ratios of all four phases, when the duration of synthesis is short (2–4 h). The materials synthesized exhibited high photocatalytic activity (in most cases higher than P25), which is attributed to the beneficial phase composition and high specific surface area.
Keywords:sol-gel processes, X-ray methods, chemical properties, TiO2, photocatalysis
Publication status:Published
Publication version:Version of Record
Publication date:08.07.2024
Publisher:Elsevier
Year of publishing:2024
Number of pages:str. 37033-37040
Numbering:Vol. 50, issueǂ 19, partǂ B
PID:20.500.12556/DiRROS-20208 New window
UDC:54
ISSN on article:1873-3956
DOI:10.1016/j.ceramint.2024.07.092 New window
COBISS.SI-ID:202832387 New window
Copyright:© 2024 The Authors.
Publication date in DiRROS:14.08.2024
Views:512
Downloads:450
Metadata:XML DC-XML DC-RDF
:
ROZMAN, Nejc, SEVER ŠKAPIN, Andrijana, TOBALDI, David Maria, DRAŽIĆ, Goran and NADRAH, Peter, 2024, Tailoring the crystalline and amorphous phase ratios of TiO2 through the use of organic additives during hydrothermal synthesis. Ceramics International [online]. 2024. Vol. 50, no. 19, part B, p. 37033–37040. [Accessed 21 April 2025]. DOI 10.1016/j.ceramint.2024.07.092. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=20208
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Record is a part of a journal

Title:Ceramics International
Publisher:Elsevier
ISSN:1873-3956
COBISS.SI-ID:23209733 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:NC-0017
Name:Fotokatalitski heterostrukturirani nanomateriali za izkoriščanje sončne energije
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:J2-4441
Name:Dvojno delujoči Nb2O5 in Nb2O5-TiO2 materiali za sočasno redukcijo CO2 in oksidacijo organskih snovi v spojine z dodano vrednostjo
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P2-0273
Name:Gradbeni objekti in materiali

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:12.07.2024
Applies to:Text and Data Mining valid from 2024-10-01 Text and Data Mining valid from 2024-10-01 Version of Record valid from 2024-07-12

Secondary language

Language:Slovenian
Keywords:sol-gel procesi, rentgenske metode, kemijske lastnosti, TiO2, fotokataliza


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