A novel sulfur-doped Prussian blue/graphene oxide (PB/GO-S) nanocomposite was designed and fabricated to remove cesium ions (Cs+) from water. Its maximum adsorption capacity was 175.72 mg g–1. And the adsorbent exhibited high selectivity to Cs+ in the presence of competing ions (sodium and potassium) and can reach adsorption equilibrium in less than 2 h. The adsorption behavior was consistent with Langmuir isotherm and pseudo-second-order kinetic model. In the adsorption process, both temperature and pH affect the adsorption performance, while the physical and chemical properties of the nanocomposite were stable in the pH range of 4–10.

中文翻译：

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一种用于高效吸附和去除铯离子的新型 S 掺杂 PB/GO 纳米复合材料

设计并制造了一种新型的掺硫普鲁士蓝/氧化石墨烯 (PB/GO-S) 纳米复合材料，以去除水中的铯离子 (Cs+)。其最大吸附容量为 175.72 mg g-1。并且吸附剂在竞争离子（钠和钾）存在下对 Cs+ 表现出高选择性，并且可以在不到 2 小时内达到吸附平衡。吸附行为符合朗缪尔等温线和准二级动力学模型。在吸附过程中，温度和pH值都会影响吸附性能，而纳米复合材料的物理和化学性质在4-10的pH值范围内是稳定的。