Výsledky vyhledávání

0586898 - FZÚ DATA Vědecká data      2024
Remeš, Zdeněk - Babčenko, Oleg - Jarý, Vítězslav - Beranová, Klára

Dataset for Enhanced photoluminescence of plasma treated recycled glass particles.
Verze 2      

Popis: Figure 1. Recycled soda-lime glass powder is a sustainable material that is also often considered as a filler in cement-based composites. The changes in the surface properties of the glass particles due to the treatments were analyzed by X-ray photoelectron spectroscopy (XPS) and optical spectroscopy. We have found, that there is a relatively high level of carbon contamination on the surface of glass particles (around 30 at.%), so plasma technology and thermal annealing were tested for the surface cleaning. Room temperature plasma treatment was not sufficient to remove carbon contamination from the surface of recycled glass particles.
Instead, the room temperature plasma treatment of recycled soda-lime glass particles leads to a significant enhancement of their room temperature photoluminescence (PL) by increasing the intensity and accelerating the decay of the photolu-minescence. The enhanced blue PL after room temperature plasma treatment was attributed to the presence of carbon contamination on the glass surface and associated charge surface and interfacial defects and interfacial states. Therefore, we propose blue photoluminescence under UV LED as a fast and inexpensive method to indicate carbon contamination on the surface of glass particles.

Figure 2. The normalized FTIR absorbance spectra measured in FTIR spectrometer with ATR accessory after low pressure plasma treatment at room temperature (a) and at 500°C (b).

Figure 3. IR Raman spectra measured in FTIR spectrometer with 1064 nm laser excitation after low pressure plasma treatment at room temperature (a) and at 500°C (b).

Figure 4. C 1s (a), and O 1s (b) XPS spectra (from top to bottom) for the “As received” sample, the samples treated in H2, O2, and N2 plasma at room temperature, annealed in H2, O2, and N2 atmosphere at 500°C, and annealed in H2, O2, and N2 plasma at 500°C. Dots represent measured data, black lines results of fits, colored lines fitting components. Peaks shaded by grey originate from carbon-oxygen contamination.

Figure 5. Ratio of selected components derived from fitting XPS spectra. We use following labels for simplification: BO: Si-O-Si bridging oxygen, NBO: Si-O-M non-bridging oxygen, H2O: oxygen from hydrous species bound to silicon (H2O, Si-OH), CO: carbon-oxygen contaminations (C-O(H), C=O, COOH), C: atomic concentration of carbon normalized to 1. The absolute uncertainty was esti-mated to be of ± 0.2 and not included in the graph for better clarity. It should be noted that a sub-stantial portion of the uncertainty is given by a systematic approach of data analysis (same in all cases) resulting in high reliability of data trends.

Figure 6. PL spectra of treated glass powder oxygen plasma. “RT plasma”, resp. “500°C plasma” represents the PL spectra measured after room temperature, resp. 500°C O2 plasma treatment, The PL spectra of as received and annealed at 500°C in O2 atmosphere (no plasma) glass powder were added for comparison.

Figure 7. PL spectra of room temperature H2 plasma treated glass powder using sinusoidal UV LED excitation at frequency of 100 kHz (a). The curve with error bars corresponds to the spectrally re-solved mean PL decay time τ calculated from the phase shift between the excitation and the emis-sion spectra. The time resolved PL emission measured by TCSPC at 450 nm is shown in (b). The instrumental response function measured at the excitation pulse wavelength (excitation pulse shape) and fitted curve were added for comparison. All measurements were done at RT.

Popis změny dat: A .tif file called Figure 1 was added to the dataset.
Klíčová slova: recycling * silicon dioxide * glass * plasma * annealing * photoluminescence * Raman spectroscopy * X-ray photoelectron spectroscopy
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
DOI: https://doi.org/10.57680/asep.0586898
Handle: https://hdl.handle.net/11104/0354272
Vkladatel: admin
Datum publikování: 18.6.2024
 

0586147 - ÚJF 2025 RIV NL eng J - Článek v odborném periodiku
Suchý, Václav - Sýkorová, Ivana - Zachariáš, J. - Pachnerová Brabcová, Kateřina - Dobeš, P. - Havelcová, Martina - Rozkošný, I. - Luo, Q. -Y. - Cao, W. -X. - Wu, J. - Mácová, Petra - Viani, A. - Světlík, Ivo - Maxa, D.
Solid bitumen as an indicator of petroleum migration, thermal maturity, and contact metamorphism: A case study in the Barrandian Basin (Silurian - Devonian), Czech Republic.
International Journal of Coal Geology. Roč. 286, MAY (2024), č. článku 104493. ISSN 0166-5162. E-ISSN 1872-7840
Grant CEP: GA MŠMT EF16_019/0000728; GA MŠMT(CZ) EH22_008/0004593; GA ČR(CZ) GA19-05360S
Institucionální podpora: RVO:61389005 ; RVO:67985891 ; RVO:68378297
Klíčová slova: Graptolite reflectance * Chitinozoan reflectance * Raman spectroscopy * Mesophase * Optical anisotropy * Contact Metamorphism * Central Bohemian Pluton
Obor OECD: Nuclear physics; Geology (USMH-B); Materials engineering (UTAM-F)
Impakt faktor: 5.6, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.coal.2024.104493
Trvalý link: https://hdl.handle.net/11104/0353737

0585020 - ÚFCH JH 2025 RIV US eng J - Článek v odborném periodiku
Haider, Golam - Gastaldo, Michele - Karim, Bazlul - Plšek, Jan - Varade, V. - Volochanskyi, Oleksandr - Vejpravová, J. - Kalbáč, Martin
Highly Efficient Bulk-Crystal-Sized Exfoliation of 2D Materials under Ultrahigh Vacuum.
ACS Applied Electronic Materials. (2024). E-ISSN 2637-6113
Grant CEP: GA ČR(CZ) GX20-08633X
Institucionální podpora: RVO:61388955
Klíčová slova: raman-scattering * shear * ultrahigh vacuum exfoliation * noble metals * large-area monolayers * interfacial interaction * Raman spectroscopy
Obor OECD: Physical chemistry
Impakt faktor: 4.7, rok: 2022
Způsob publikování: Open access
https://pubs.acs.org/doi/10.1021/acsaelm.3c01824?src=getftr
Trvalý link: https://hdl.handle.net/11104/0352789

0584876 - ÚFCH JH 2025 RIV GB eng J - Článek v odborném periodiku
Varillas, Javier - Lukeš, J. - Manikas, A. - Maňák, Jan - Dluhoš, J. - Melníková, Zuzana - Kalbáč, Martin - Galiotis, C. - Frank, Otakar
Mechanical response of monolayer graphene via a multi-probe approach.
International Journal of Mechanical Sciences. Roč. 273, JUL 2024 (2024), č. článku 109208. ISSN 0020-7403. E-ISSN 1879-2162
Grant CEP: GA ČR GF23-06174K; GA MŠMT EH22_008/0004558; GA TA ČR TH80020003; GA MŠMT LM2023051
Institucionální podpora: RVO:61388955 ; RVO:68378271
Klíčová slova: graphene * Raman spectroscopy * Scanning electron microscopy
Obor OECD: Physical chemistry; Condensed matter physics (including formerly solid state physics, supercond.) (FZU-D)
Impakt faktor: 7.3, rok: 2022
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0020740324002509?via%3Dihub
Trvalý link: https://hdl.handle.net/11104/0352659

0583800 - BC 2024 RIV CH eng J - Článek v odborném periodiku
Němečková, K. - Mareš, Jan - Procházková, L. - Culka, A. - Košek, F. - Wierzchos, J. - Nedbalová, L. - Dudák, J. - Tymlová, V. - Žemlička, J. - Kust, A. - Zima, J. - Nováková, E. - Jehlička, J.
Gypsum endolithic phototrophs under moderate climate (Southern Sicily): their diversity and pigment composition.
Frontiers in Microbiology. Roč. 14, Jul (2023), č. článku 1175066. ISSN 1664-302X. E-ISSN 1664-302X
Grant CEP: GA ČR GA22-06374S; GA MŠMT(CZ) LO1416; GA MŠMT(CZ) ED2.1.00/19.0392
Institucionální podpora: RVO:60077344
Klíčová slova: mcmurdo dry valleys * raman-spectroscopy * microbial colonization * atacama desert
Obor OECD: Microbiology
Impakt faktor: 5.2, rok: 2022
Způsob publikování: Open access
https://doi.org/10.3389/fmicb.2023.1175066
Trvalý link: https://hdl.handle.net/11104/0351799