In situ modification of JUC-160-derived carbon with Cu/ZnO nanoparticles for efficient capture and reversible storage of radioiodine
In situ modification of JUC-160-derived carbon with Cu/ZnO nanoparticles for efficient capture and reversible storage of radioiodine
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用 Cu/ZnO 纳米粒子对 JUC-160 衍生的碳进行原位修饰，以实现放射性碘的有效捕获和可逆存储
DOI：
10.1016/j.surfin.2022.102160
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发表时间：
2022
影响因子：
6.2
通讯作者：
Yi Yang
中科院分区：
文献类型：
--
作者：
Elvis Djam Miensah;Lowell Toku Kokuloku;Aotian Gu;Kaiwei Chen;Peng Wang;Chunhui Gong;Ping Mao;Kai Chen;Yan Jiao;Yi Yang
核技术的扩散也导致放射性核素释放到环境中。其中关键的是放射性碘，它通过甲状腺癌威胁人类健康，并危害环境。有效去除碘对于遏制这些威胁非常重要。本文报道了一种简单的原位Cu-ZnO修饰的JUC-160衍生炭，用于有效的挥发性碘吸附。所制备的Cu/ZnO@C在气相和溶液中分别显示出521 wt%和1280.14 mg g-1的高碘吸附容量。此外，动力学和等温线的研究表明，单分子层和化学吸附占主导地位的吸附过程证实了伪二级和Langmuir模型。此外，这种高吸附容量和机制归因于电子-供体-受体相互作用，电荷转移络合物和Cu 0到Cu +的氧化。此外，通过所使用的配体原位掺杂氮导致用于碘固定的氮位点增加。所制备的材料还表现出优异的回收率和可重复使用性，因此它被认为是一种有前途的挥发性碘吸附剂。
Proliferation of nuclear technology has also resulted in radionuclide release into the environment. Key among them is radioiodine which threatens human health through thyroid cancer and endangers the environment. The efficient removal of iodine is important to curb these threats. Herein we report a facile in situ Cu-ZnO decorated JUC-160 derived carbon for efficient volatile iodine adsorption. The as-prepared Cu/ZnO@C displayed a high iodine adsorption capacity of 521 wt% and 1280.14 mg g − 1 in vapor phase and in solution respectively. Furthermore, kinetics and isotherm studies showed a monolayer and chemisorption dominant adsorption process confirmed by pseudo-second-order and Langmuir models. Moreover, this high adsorption capacity and mechanism was attributable to electron-donor-acceptor interactions, charge transfer complexes and oxidation of Cu 0 to Cu + . Additionally, the in situ doping of nitrogen via the ligands used resulted in added nitrogen sites for iodine immobilization. The as-fabricated material also exhibited exceptional recovery and reusability such that it is proposed as a promising volatile iodine adsorbent.