Vibrational spectroscopy characterization of impregnated activated carbon adsorption of H₂S.

IF 1.5 4区医学 Q4 ENVIRONMENTAL SCIENCES

Journal of Occupational and Environmental Hygiene Pub Date : 2024-08-01 Epub Date: 2024-06-24 DOI:10.1080/15459624.2024.2357103

Sari Katz, Alexander Pevzner, Tal Amitay-Rosen, Sharon Marx, Hadar Rotter, Yuval Ben-Shahar, Liat Aviram, Amir Lybman, Vladislav Shepelev, Ido Nir

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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.

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浸渍活性炭吸附 H2S 的振动光谱特性。

活性炭过滤器用于去除空气中的有害气体。这项研究采用振动光谱学方法，包括傅立叶变换红外光谱学和拉曼光谱学，来描述硫化氢在具有硫化氢反应活性的金属浸渍碳材料上的吸附特性。傅立叶变换红外光谱结果表明，浸渍金属与硫之间形成了新的化学键，在 618 cm-1 处出现了一个新的波段。拉曼光谱结果表明，对于硫化氢吸附能力最高的铜浸渍活性炭，在 475 cm-1 处出现了一个新的振动带，表明存在铜硫键。此外，在有效吸附硫化氢后，还观察到碳 D 子带的上移，以及约 1500 cm-1 带的更大面积。因此，傅立叶变换红外光谱法和拉曼光谱法的结合有可能显示出浸渍活性炭过滤器对 H2S 的吸附情况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Occupational and Environmental Hygiene 环境科学-公共卫生、环境卫生与职业卫生

CiteScore

3.30

自引率

10.00%

发文量

审稿时长

12-24 weeks

期刊介绍： The Journal of Occupational and Environmental Hygiene ( JOEH ) is a joint publication of the American Industrial Hygiene Association (AIHA®) and ACGIH®. The JOEH is a peer-reviewed journal devoted to enhancing the knowledge and practice of occupational and environmental hygiene and safety by widely disseminating research articles and applied studies of the highest quality. The JOEH provides a written medium for the communication of ideas, methods, processes, and research in core and emerging areas of occupational and environmental hygiene. Core domains include, but are not limited to: exposure assessment, control strategies, ergonomics, and risk analysis. Emerging domains include, but are not limited to: sensor technology, emergency preparedness and response, changing workforce, and management and analysis of "big" data.