1. Vibrational spectroscopy characterization of impregnated activated carbon adsorption of H2S.
- Author
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Katz, Sari, Pevzner, Alexander, Amitay-Rosen, Tal, Marx, Sharon, Rotter, Hadar, Ben-Shahar, Yuval, Aviram, Liat, Lybman, Amir, Shepelev, Vladislav, and Nir, Ido
- Subjects
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RAMAN spectroscopy , *ADSORPTION (Chemistry) , *HYDROGEN sulfide , *RESEARCH funding , *CARBON , *COPPER , *FILTERS & filtration , *INFRARED spectroscopy , *METALS , *HAZARDOUS substances , *CHARCOAL - Abstract
Activated carbon filters are used for the removal of hazardous gases from the air. This research applied vibrational spectroscopy methods, including Fourier-transform infrared spectroscopy and Raman spectroscopy to characterize hydrogen sulfide adsorption on impregnated carbon materials with metals having reactivity toward hydrogen sulfide. The Fourier-transform infrared spectroscopy results demonstrated the formation of a new chemical bond between the impregnating metals and the sulfur, indicated by the appearance of a new band at 618 cm−1. The Raman spectra results showed that for the copper-impregnated activated carbon with the highest hydrogen sulfide adsorption capacity, a new vibrational band at 475 cm−1 evolved, indicating a copper-sulfur bond. In addition, upshifts in the carbon D sub-bands were observed after efficient hydrogen sulfide adsorption, along with a larger area of the approximately 1500 cm−1 band. Therefore, Fourier-transform infrared spectroscopy and Raman spectroscopy combination can potentially indicate H2S adsorption on impregnated activated carbon filters. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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