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Assessing the photocatalytic activity of europium doped TiO2 using liquid phase plasma process on acetylsalicylic acid
- Source :
- Catalysis Today. :365-371
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- In this study, europium (Eu) was precipitated in TiO2 powder using liquid phase plasma (LPP) process to prepare a photocatalyst with higher activity, even in the visible light range. Eu was uniformly deposited on the surface of TiO2 by the LPP method. It was observed that the amount of Eu precipitated on the TiO2 surface increased with increasing precursor concentration. XPS and EDS analysis showed that Eu was precipitated as europium oxide. The precipitation of Eu shifted the position of the Raman peak to a higher wavelength; with higher Eu content, the band gap energy decreased. Particularly, the photocatalytic efficiency of the Eu doped TiO2 photocatalyst (EDTP) in the visible light source was much higher than that of bare TiO2, and with higher Eu content, the photocatalytic activity was improved. Acetylsalicylic acid was attacked by HO∙ produced on the EDTP’s surface and assumed to be finally mineralized to H2O and CO2 via two decomposition pathways, namely, decarboxylation and deacetylation.
- Subjects :
- Materials science
Precipitation (chemistry)
Inorganic chemistry
Oxide
chemistry.chemical_element
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Catalysis
0104 chemical sciences
chemistry.chemical_compound
symbols.namesake
X-ray photoelectron spectroscopy
chemistry
symbols
Photocatalysis
0210 nano-technology
Europium
Raman spectroscopy
Visible spectrum
Subjects
Details
- ISSN :
- 09205861
- Database :
- OpenAIRE
- Journal :
- Catalysis Today
- Accession number :
- edsair.doi...........6fda5f162a8eecd67a8cb5490d157932