It is a challenge to improve the adsorption performance and service life of graphene oxide (GO) composite by introducing a macromolecular to manipulate the interlayer of GO to form a good water-endurable by intercalation. By virtue of high reactivity of amino group in the cross-linked network formed by poly(acrylamide) (pAM) and N,N′-methylenebisacrylamide (MBA), the layer space of GO was manipulated to acquire more efficient uranium adsorption of GO. Furthermore, the amino group can also increase coordinative binding interactions via providing a secondary coordination sphere, which adjusts the electron density of composites to lower the overall charge on U(VI) and provides an additional point allowing hydrogen bond to align U(VI) in a satisfactory coordination style. Herein, a high adsorption capacity and water-endurable of GO-pAM-MBA was constructed by interface manipulation on GO surface. The U-uptake capacity of GO-pAM-MBA was 984.2 mg g⁻¹ (4.14 mmol g⁻¹) in aqueous solutions, which was 1.6 times than that of pristine GO under same environment. The resultant adsorbent achieved a high adsorption amount of 5.42 mg g⁻¹ in real uranium mine wastewater. Furthermore, GO-pAM-MBA displayed good water-endurable even after six cycles. Overall, the adsorption performance indicated that the GO-pAM-MBA was an excellent appropriate adsorbent for extracting uranium.

通过引入大分子来操纵GO的中间层以通过嵌入形成良好的耐水性，来提高氧化石墨烯（GO）复合材料的吸附性能和使用寿命是一项挑战。由于聚（丙烯酰胺）（pAM）和N，N'-亚甲基双丙烯酰胺（MBA）形成的交联网络中氨基的高反应性，对GO的层空间进行了控制，以更有效地吸附GO。此外，氨基还可以通过提供二级配位球来增加配位键合相互作用，该二级配位球可调节复合材料的电子密度以降低U（VI）上的总电荷，并提供一个附加点以使氢键使U（VI）对齐令人满意的协调风格。在这里 通过在GO表面上的界面处理，构建了高吸附力和耐水性的GO-pAM-MBA。GO-pAM-MBA的U吸收能力为984.2 mg g^-1（4.14 mmol g ^-1）的水溶液，是相同条件下原始GO的1.6倍。所得吸附剂在实际铀矿废水中实现了5.42 mg g ^-1的高吸附量。此外，即使经过六个循环，GO-pAM-MBA也显示出良好的耐水性。总体而言，吸附性能表明，GO-pAM-MBA是萃取铀的极佳合适吸附剂。