School of Civil Engineering, University of South China, Hengyang, 421001, Hunan Province, China.
Institute of Human Factor Engineering and Safety Management, Hunan Institute of Technology, Hengyang, 421001, Hunan Province, China.
Environ Sci Pollut Res Int. 2022 Jul;29(35):53509-53521. doi: 10.1007/s11356-022-19659-0. Epub 2022 Mar 14.
In this study, the potassium copper ferrocyanide-functionalized hollow mesoporous silica spheres was successfully prepared. SEM, FTIR, XRD, EDS, and XPS techniques were used to characterize the structure of materials before and after functionalization. The synthesized functionalized hollow mesoprous silica was applied to remove cesium from aqueous solution. The applicability of the adsorbent for the removal of cesium ions was assessed and the effective parameters such as solution pH, contacting time, initial Cs concentration, and competitive ions effect were evaluated systematically under the batch mode. The experimental results showed that the adsorbent exhibited high Cs selectivity even in the highly concentrated coexisting ions solution, which makes them to be used as potential adsorbents for the removal of cesium from nuclear wastewater or contaminated groundwater.
在这项研究中，成功制备了钾铜亚铁氰化钾功能化的中空介孔硅球。采用 SEM、FTIR、XRD、EDS 和 XPS 技术对功能化前后材料的结构进行了表征。合成的功能化中空介孔硅被应用于从水溶液中去除铯。在批处理模式下，系统评估了吸附剂对去除铯离子的适用性，并评估了有效参数，如溶液 pH 值、接触时间、初始 Cs 浓度和竞争离子效应。实验结果表明，即使在高浓度共存离子溶液中，该吸附剂也表现出高铯选择性，这使得它们可用作从核废水或受污染地下水去除铯的潜在吸附剂。
