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Title:Variations of electronic properties on the behavior of visible light-triggered TiO[sub]2 +Au photocatalysts
Authors:ID Slapničar, Špela (Author)
ID Žerjav, Gregor (Author)
ID Roškarič, Matevž (Author)
ID Zavašnik, Janez (Author)
ID Pintar, Albin (Author)
Files:URL URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0169433225006373?via%3Dihub
 
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MD5: 2E852CE32A329E463C38A73F77B2D807
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo KI - National Institute of Chemistry
Abstract:Au catalysts (1 wt% Au) using anatase TiO2 nanorods (TNR, SBET =106 m2/g) or nanospheres (TNP, SBET =86 m2/g). The majority of Au particles in the prepared TiO2 +Au catalysts were in the range of 20–30 nm, with slight differences observed between the TNR +Au and TNP +Au samples. It is noteworthy that the addition of Au did not significantly change the specific surface area and crystallinity of the TiO2 supports. Evaluation of photocatalytic activity using ABTS•+ cation oxidation, DMPO/DMSO spin trapping and bisphenol A (BPA) degradation under visible-light illumination showed different behaviour of TNR +Au and TNP +Au catalysts. The TNR +Au catalyst produced mainly e-, while the TNP +Au catalyst exhibited efficient O2 •- production, which was confirmed by electron paramagnetic resonance spin trapping analyses. Conversely, due to its high Schottky barrier height (SBH) and the properties of the Au nanoparticles, the TNR +Au catalyst could not facilitate an oxygen reduction reaction but effectively produced e- as it reduced ABTS•+. The results show that the degra dation of BPA in the presence of the TNR +Au photocatalyst occurs through the involvement of e- and a small amount of hydroxyl radicals (OH•). Comprehensive characterization techniques provided insights into the intricate relationships between catalyst structure, composition and catalytic activity.
Publication status:Published
Publication version:Version of Record
Publication date:30.06.2025
Year of publishing:2025
Number of pages:str. 1-15
Numbering:Vol. 695, [article no.] ǂ162923
Source:Applied Surface Science
PID:20.500.12556/DiRROS-21817 New window
UDC:546
ISSN on article:0169-4332
DOI:10.1016/j.apsusc.2025.162923 New window
COBISS.SI-ID:228881667 New window
Copyright:© 2025 The Author(s). Published by Elsevier B.V.
Publication date in DiRROS:03.04.2025
Views:180
Downloads:74
Metadata:XML DC-XML DC-RDF
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SLAPNIČAR, Špela, ŽERJAV, Gregor, ROŠKARIČ, Matevž, ZAVAŠNIK, Janez and PINTAR, Albin, 2025, Variations of electronic properties on the behavior of visible light-triggered TiO[sub]2 +Au photocatalysts. Applied Surface Science [online]. 2025. Vol. 695, no. 162923, p. 1–15. [Accessed 10 April 2025]. DOI 10.1016/j.apsusc.2025.162923. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=21817
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Record is a part of a journal

Title:Applied Surface Science
Shortened title:Appl. surf. sci.
Publisher:North-Holland
ISSN:0169-4332
COBISS.SI-ID:3283215 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P2-0150
Name:Integralni pristop k preprečevanju onesnaževanja voda

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:08.03.2025
Applies to:Text and Data Mining valid from 2025-06-01 Text and Data Mining valid from 2025-06-01 Version of Record valid from 2025-03-08

Secondary language

Language:Slovenian
Keywords:titanijev dioksid, zlati nanodelci, fotokataliza


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