Maqola

Improvement of Heat Dissipation in Ag/Ni Substrates for Testing Cu-TiO2/TiO2-Modified Filters Using SERS Spectroscopy

Hanna BandarenkaApplied Plasmonics Laboratory, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, BelarusAliaksandr BurkoApplied Plasmonics Laboratory, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, BelarusKseniya GirelApplied Plasmonics Laboratory, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, BelarusDiana LaputskoApplied Plasmonics Laboratory, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, BelarusElizaveta OrelApplied Plasmonics Laboratory, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, BelarusА.А. МизгайлоApplied Plasmonics Laboratory, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, BelarusUtkirjon SharopovAlise PodelinskaInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaUladzislau ShapelInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaVladimir PankratovInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaSergei PiskunovInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, LatviaDmitry BocharovInstitute of Solid State Physics, University of Latvia, LV-1063 Riga, Latvia

2023en

ABI

Annotatsiya

Surface-enhanced Raman scattering (SERS) spectroscopy is used to investigate a composition of wash swabs from the Cu-TiO2/TiO2-modified filters with disinfecting ability. Macroporous Si chips coated with conformal 800 nm thick Ni layer and Ag particles (Ag/Ni) are engineered to act as SERS-active substrates. Such substrates are characterized by a moderate reflection band in the visible range and provide an improved heat dissipation from contaminants in wash swabs during SERS study. This prevents thermal-induced destruction of analyzing media for reliable assessment of its composition. The anatase Cu-TiO2 and TiO2 nanoparticles are synthesized using the sol-gel method and characterized via Raman spectroscopy and X-ray diffractometry. The filters are modified with Cu-TiO2/TiO2 nanoparticles and embedded in three-valve facial masks that are worn by a volunteer to breathe for 4 h. Comparative SERS analysis of the filters shows that they slightly destroy chemical bonds in the molecules constituting airborne contaminations upon ceiling day lights, which can be associated with Cu-TiO2 photocatalytic activity. The filters additionally exposed to near-ultraviolet light prominently decrease the intensity of Raman signatures of airborne contaminant due to the presence of pure TiO2.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.3390/cryst13050749

Iqtiboslar va manbalar

3 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar