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Nanohybrid of Silver‐MXene: A Promising Sorbent for Iodine Gas Capture from Nuclear Waste
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Nanohybrid of Silver‐MXene: A Promising Sorbent for Iodine Gas Capture from Nuclear Waste
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Journal Article
Nanohybrid of Silver‐MXene: A Promising Sorbent for Iodine Gas Capture from Nuclear Waste
2025
Overview
The increasing reliance on nuclear energy as a significant low‐carbon power source necessitates effective solutions for managing radioactive emissions. This study introduces a novel application of MXene nanohybrids, specifically silver‐MXene (Ag‐Ti3C2Tx), as an effective sorbent for radioiodine off‐gas capture at an operating temperature of 150 °C. Through comprehensive material characterization, including X‐ray diffraction, scanning and transmission electron microscopies, energy‐dispersive X‐ray spectroscopy, Raman spectroscopy, thermogravimetric analysis, inductively coupled plasma optical emission spectroscopy, and gas sorption analyses, the successful loading of Ag nanoparticles onto Ti3C2Tx is confirmed and the subsequent formation of AgI upon iodine capture. The results demonstrate that Ag‐Ti3C2Tx exhibits superior iodine uptake compared to traditional silver‐based sorbents such as silver mordenite zeolite (AgZ) and silver‐functionalized silica aerogel (AgAero). The Ag‐Ti3C2Tx achieves an iodine loading of 946 mg g−1, significantly outperforming AgZ (131 mg g−1). These findings highlight the potential of Ag‐Ti3C2Tx as a highly efficient, thermally stable sorbent for radioiodine capture, and potentially addressing key limitations of existing materials. Silver‐MXene (Ag‐Ti3C2Tx) nanohybrids effectively captured iodine gas at 150 °C, with Ag nanoparticles loaded onto MXene via silver nitrate reduction. Upon exposure to iodine gas, silver iodide forms, confirming successful adsorption. Ag‐Ti3C2Tx shows superior iodine uptake (946 mg g−1) compared to conventional sorbents, demonstrating its potential as an efficient, thermally stable solution for radioiodine capture.
Publisher
John Wiley & Sons, Inc,Wiley-VCH
