Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures
Yıl: 2022 Cilt: 46 Sayı: 4 Sayfa Aralığı: 1081 - 1088 Metin Dili: İngilizce DOI: 10.55730/1300-0527.3416 İndeks Tarihi: 06-12-2022
Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures
Öz: A low field benchtop electron spin resonance (ESR) (also referred to as electron paramagnetic resonance (EPR)) spectrometer is used to reveal paramagnetic centres such as oxygen vacancies and $Ti^{+3}$ centres over 0.5%Pd/$TiO_2$. The measurement was performed at room temperature after the sample was reduced in situ under mild hydrogen pressures and evacuated to P < 10–6 Torr. The measurement was possible due to a $T_1$ compensation effect under vacuum: Correlation times at low pressures enabled sufficient line narrowing and detection of the ESR signal, justifying a method using benchtop spectrometers coupled to vacuum manifolds. The method justification was demonstrated using similar measurements performed on a reference compound, Mn(II) in plasticine: a measurement performed by saturation recovery technique revealed that $T_1$ of the signal due to Mn(II) was smaller in vacuum than its atmosphere exposed counterpart. By applying vacuum, the ESR spectra of 0.5%Pd/$TiO_2$ were collected at ambient temperatures, with features equivalent to the published data obtained at cryogenic temperatures.
Anahtar Kelime: Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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| APA | Uner D, Yarar M (2022). Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. , 1081 - 1088. 10.55730/1300-0527.3416 |
| Chicago | Uner Deniz,Yarar Melis Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. (2022): 1081 - 1088. 10.55730/1300-0527.3416 |
| MLA | Uner Deniz,Yarar Melis Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. , 2022, ss.1081 - 1088. 10.55730/1300-0527.3416 |
| AMA | Uner D,Yarar M Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. . 2022; 1081 - 1088. 10.55730/1300-0527.3416 |
| Vancouver | Uner D,Yarar M Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. . 2022; 1081 - 1088. 10.55730/1300-0527.3416 |
| IEEE | Uner D,Yarar M "Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures." , ss.1081 - 1088, 2022. 10.55730/1300-0527.3416 |
| ISNAD | Uner, Deniz - Yarar, Melis. "Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures". (2022), 1081-1088. https://doi.org/10.55730/1300-0527.3416 |
| APA | Uner D, Yarar M (2022). Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. Turkish Journal of Chemistry, 46(4), 1081 - 1088. 10.55730/1300-0527.3416 |
| Chicago | Uner Deniz,Yarar Melis Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. Turkish Journal of Chemistry 46, no.4 (2022): 1081 - 1088. 10.55730/1300-0527.3416 |
| MLA | Uner Deniz,Yarar Melis Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. Turkish Journal of Chemistry, vol.46, no.4, 2022, ss.1081 - 1088. 10.55730/1300-0527.3416 |
| AMA | Uner D,Yarar M Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. Turkish Journal of Chemistry. 2022; 46(4): 1081 - 1088. 10.55730/1300-0527.3416 |
| Vancouver | Uner D,Yarar M Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures. Turkish Journal of Chemistry. 2022; 46(4): 1081 - 1088. 10.55730/1300-0527.3416 |
| IEEE | Uner D,Yarar M "Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures." Turkish Journal of Chemistry, 46, ss.1081 - 1088, 2022. 10.55730/1300-0527.3416 |
| ISNAD | Uner, Deniz - Yarar, Melis. "Oxygen vacancies on $Pd/TiO_2$ are detected at low pressures by ESR spectroscopy at ambient temperatures". Turkish Journal of Chemistry 46/4 (2022), 1081-1088. https://doi.org/10.55730/1300-0527.3416 |
