In this work, novel Prussian blue analogs-based layered double hydroxide (PBA@ZnTi-LDH) was in situ synthesized and used for radioactive Cs⁺ removal from wastewater. The results suggested that this PBA@ZnTi-LDH prepared using LDH as skeleton and transition metal source showed higher adsorption capacity (243.9 mg/g) and water stability than conventional PBAs, and promising application in scale-up Cs⁺ removal. Thus, it was granulated by calcium alginate and the PBA@ZnTi-LDH/CaALG exhibited favorable post-separation and fixed-bed adsorption ability at different Cs⁺ concentrations and flow rates, highlighting its application perspective on Cs⁺ removal from various kinds of wastewater. Moreover, the real-world Cs⁺ removal was preliminarily explored using natural complex Cs⁺-containing water. As a result, this stable and easily separated PBA@ZnTi-LDH/CaALG showed high removal efficiency, selectivity and good reusability, which was promising in scale-up Cs⁺ removal from the real-world wastewater.

在这项工作中，原位合成了基于普鲁士蓝类似物的新型层状双氢氧化物（PBA @ ZnTi-LDH），并用于从废水中去除放射性Cs ⁺。结果表明，以LDH为骨架和过渡金属源制备的PBA @ ZnTi-LDH比常规PBA具有更高的吸附能力（243.9 mg / g）和水稳定性，有望在规模化Cs ⁺去除中应用。因此，用海藻酸钙制粒后，PBA @ ZnTi-LDH / CaALG在不同的Cs ⁺浓度和流速下均表现出良好的后分离和固定床吸附能力，突出了其在各种废水中去除Cs ^+的应用前景。。而且，现实世界中的Cs使用含有天然配合物Cs ⁺的水初步研究了^+的去除。结果，这种稳定且易于分离的PBA @ ZnTi-LDH / CaALG具有较高的去除效率，选择性和良好的可重复使用性，这有望从实际废水中按比例放大Cs ⁺去除率。