Here, inspired by the poisoning process of heavy metal in human body that the accidental ingested heavy metal can anchor to the functional groups of DNA/protein/enzyme to exert their toxicities during the rapid blood circulation, we developed the adsorbent that enveloped Etched UiO-66 with abundant functional groups into chitosan (CTS) aerogel to capture Pb(II) and Cd(II) in aqueous and apple juice. SEM, XRD and FTIR spectra were used to characterize the Etched UiO-66/CTS aerogel. The results showed that Etched UiO-66/CTS aerogel has a three-dimensional porous structure, and –OH groups of CTS interact with Zr(IV) of Etched UiO-66 to form the stable UiO-66/CTS aerogel. Benefiting from the intrinsic properties of porous and abundant functional groups, Etched UiO-66/CTS aerogel exhibits satisfactory adsorption capacities of 654.9 mg g⁻¹ for Pb(II) and 343.9 mg g⁻¹ for Cd(II) at 45 °C. Moreover, the aerogel shows excellent removal efficiencies of 98.21% for Pb(II) and 98.70% for Cd(II) with initial concentration of 1.0 mg L⁻¹ in apple juice with little effect on the quality of apple juice. This strategy of mimetic heavy metal ions’ poisoning behavior opens up a new avenue for the removal of heavy metal ions in complex matrices.

在这里，受重金属在人体中毒的过程的启发，意外摄入的重金属可以锚定到DNA /蛋白质/酶的功能团上，从而在快速血液循环中发挥毒性，我们开发了包裹蚀刻UiO-的吸附剂。将具有丰富官能团的66脱乙酰壳多糖（CTS）气凝胶捕获水溶液和苹果汁中的Pb（II）和Cd（II）。SEM，XRD和FTIR光谱用于表征蚀刻的UiO-66 / CTS气凝胶。结果表明，蚀刻的UiO-66 / CTS气凝胶具有三维多孔结构，并且CTS的-OH基与蚀刻的UiO-66的Zr（IV）相互作用形成稳定的UiO-66 / CTS气凝胶。得益于多孔和丰富的官能团的内在特性，蚀刻后的UiO-66 / CTS气凝胶在45°C下的Pb（II）吸附容量为654.9 mg g ^-1，对Cd（II）吸附容量为343.9 mg g ^-1。此外，在苹果汁中初始浓度为1.0 mg L ^-1时，气凝胶显示出极好的Pb（II）和Cd（II）去除效率，分别为98.21％和98.70％，对苹果汁的品质影响很小。这种模拟重金属离子中毒行为的策略为去除复杂基质中的重金属离子开辟了一条新途径。