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Title:Metal and non-metal modified titania : the effect of phase composition and surface area on photocatalytic activity
Authors:ID Žener, Boštjan (Author)
ID Matoh, Lev (Author)
ID Reli, Martin (Author)
ID Sever Škapin, Andrijana (Author)
ID Cerc Korošec, Romana (Author)
Files:URL URL - Source URL, visit https://journals.matheo.si/index.php/ACSi/article/view/7200
 
.pdf PDF - Presentation file, download (1,00 MB)
MD5: 698E1F10822703B91FF8C84C8845C5CA
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:The application of TiO 2 photocatalysis in various environmental fields has been extensively studied in the last decades due to its ability to induce the degradation of adsorbed organic pollutants. In the present work, TiO 2 powders doped and co-doped with sulfur and nitrogen and modified with platinum were prepared by particulate sol-gel synthesis. PXRD measurements revealed that the replacement of HCl with H 2SO4 during synthesis reduced the size of the crystallites from ~ 30 nm to ~20 nm, increasing the surface area from ~44 m2/g to ~80 m2/g. This is consistent with the photocatalytic activity of the samples and the measured photocurrent behavior of the photocatalysts. The results showed that the prop- erties of the powders (i.e., surface area, crystallite size, photocurrent behavior) depend strongly not only on the type but also on the amount of acid and dopants used in the synthesis. Doping, co-doping and modification of TiO 2 samples with nitrogen, sulfur and platinum increased their photocatalytic activity up to 6 times.
Keywords:titanium dioxide, powders, doping, photocatalysis, photocurrent, SEM
Publication status:Published
Publication version:Version of Record
Publication date:15.03.2022
Publisher:Slovensko kemijsko društvo, =Slovenian Chemical Society
Year of publishing:2022
Number of pages:str. 217-226
Numbering:Vol. 69, no. 1
PID:20.500.12556/DiRROS-15836 New window
UDC:546.82-31:544.526.5
ISSN on article:1580-3155
DOI:10.17344/acsi.2021.7200 New window
COBISS.SI-ID:98258947 New window
Copyright:Copyright (c) 2020 Boštjan Žener, Lev Matoh, Martin Reli, Andrijana Sever Škapin, Romana Cerc Korošec
Note:Nasl. z nasl. zaslona; Soavtorji: Lev Matoh, Martin Reli, Andrijana Sever Škapin, Romana Cerc Korošec; Opis vira z dne 21. 2. 2022;
Publication date in DiRROS:04.05.2023
Views:856
Downloads:373
Metadata:XML DC-XML DC-RDF
:
ŽENER, Boštjan, MATOH, Lev, RELI, Martin, SEVER ŠKAPIN, Andrijana and CERC KOROŠEC, Romana, 2022, Metal and non-metal modified titania : the effect of phase composition and surface area on photocatalytic activity. Acta chimica slovenica [online]. 2022. Vol. 69, no. 1, p. 217–226. [Accessed 14 March 2025]. DOI 10.17344/acsi.2021.7200. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=15836
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Record is a part of a journal

Title:Acta chimica slovenica
Shortened title:Acta chim. slov.
Publisher:Slovensko kemijsko društvo, =Slovenian Chemical Society
ISSN:1580-3155
COBISS.SI-ID:21870085 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P1-0134
Name:Kemija za trajnostni razvoj
Funder:ARRS - Slovenian Research Agency
Project number:P2-0273
Name:Gradbeni objekti in materiali
Funder:ARRS - Slovenian Research Agency
Project number:NC-0002
Name:Izkoriščanje sončne energije s fotokatalitskim razklopom vode in/ali redukcijo CO2 in uporabo ko-katalizatorjev
Funder:Other - Other funder or multiple funders
Project number:CZ.02.1.01/0.0/0.0/17_049/0008419
Name:Support of Cross-Sectoral Cooperation in the Field of Pollutant Reduction in the Environment and Waste Utilization

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.

Secondary language

Language:Slovenian
Abstract:Zaradi zmožnosti razgradnje adsorbiranih organskih onesnažil se fotokatalizator TiO2 v zadnjih desetletjih veliko preučuje za različne okoljske aplikacije. V tem delu predstavljamo z žveplom in dušikom dopirane oz. kodopirane ter s platino modificirane prahove TiO2, ki smo jih pripravili po koloidnem sol-gel postopku. PXRD meritve kažejo, da zamenjava HCl s H2SO4 med sinteznim postopkom zmanjša velikost kristalitov iz ~30 nm na ~20 nm, pri čemer se poveča tudi specifična površina iz ~44 m2/g na ~80 m2/g. Opažanja korelirajo z izmerjeno fotokatalitsko aktivnostjo vzorcev in izmerjenim fototokom. Rezultati kažejo, da so lastnosti prahov (specifična površina, velikost kristalitov, obnašanje fototoka) odvisne ne le od vrste uporabljene kisline, temveč tudi od njene količine in uporabljenega dopanta. Dopiranje z žveplom, kodopiranje z žveplom in dušikom in modifikacija prahov TiO2 s platino povečajo fotokatalitsko aktivnost tudi do šestkrat.
Keywords:prahovi, dopiranje, fototok, SEM


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