Abstract Radioactive solutions containing graphene, graphene oxide, single-walled carbon nanotube and -COOH functionalized single-walled carbon nanotubes were prepared. Iodine-131 was used as the radioactive material. A high purity germanium detector with a resolution of 490 eV at 122 keV was used to measure the photon intensities emitted from the iodine-131 solutions by gamma ray spectroscopy. The intensities of the gamma radiation emitted from the radioactive solutions, the filtered solutions, and filter system were measured. The removal percentage and adsorption capacity of the investigated nanomaterials were determined. The results showed that the single-walled carbon nanotubes are superior absorbers than graphene, graphene oxide and -COOH functionalized single-walled carbon nanotubes for iodine-131.

中文翻译：

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纳米材料有效去除放射性废物中的碘 131

摘要 制备了含有石墨烯、氧化石墨烯、单壁碳纳米管和-COOH功能化单壁碳纳米管的放射性溶液。碘 131 用作放射性物质。使用 122 keV 分辨率为 490 eV 的高纯度锗探测器通过伽马射线光谱法测量碘 131 溶液发射的光子强度。测量了放射性溶液、过滤溶液和过滤系统发出的伽马辐射强度。确定了研究的纳米材料的去除百分比和吸附能力。结果表明，单壁碳纳米管比石墨烯、氧化石墨烯和-COOH 功能化的单壁碳纳米管对碘 131 具有更好的吸收剂。