AI Article Synopsis
- Developing recyclable adsorbents for co-capture of iodine (I) and CHI gas is a significant and challenging area of research.
- Cu-based mesoporous silica (C-S) materials were successfully synthesized and demonstrated for the first time to effectively capture CHI, achieving a capacity of 1060 mg/g at 200 °C.
- The study revealed that the adsorption mechanism involves Cu cleaving carbon-iodine bonds, forming products that enhance CHI capture, with C-S materials showing impressive reusability over multiple cycles.
Article Abstract
Developing recyclable adsorbents for co-capture of I and CHI gas is a meaningful and challenging topic. Herein, Cu-based mesoporous silica (C-S) materials were synthesized and applied for CHI capture for the first time. Factors (Cu content, temperature, contact time and CHI concentration) affecting the adsorption behavior were investigated. The results demonstrated that the CHI adsorption capacity of the obtained C-S materials reached up to 1060 mg/g at 200 ℃. Furthermore, the C-S material exhibited excellent reusability (91.3 %, 5 cycles). It was found that Cu could cleave the carbon iodine bonds, causing CHI to dissociate into •CH and I. Then the Cu converted from Cu reacted with I to achieve the purpose of CHI capture. The adsorption mechanism of CHI on the C-S materials could be concluded that Cu reacted with CHI form CuI (Cu + CHI → CuI + •CH). This work suggested that the obtained C-S materials could be promising adsorbents for CHI capture.
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| http://dx.doi.org/10.1016/j.jhazmat.2024.135413 | DOI Listing |
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