The polar modified dendritic post-cross-linked polymer namely HCPD was synthesized and used for adsorptive removal of Cu2+ from aqueous solution. The results showed that 5.12 mmol/g of amino and 2.25 mmol/g of carbonyl groups were uploaded on the polymer and these groups were significantly beneficial for Cu2+ removal. The maximum capacity reached 157.8 mg/g at 313 K and increased as the temperature increased. The Langmuir model characterized the equilibrium data well and a chemical interaction was involved with the enthalpy change of 49.50 kJ/mol. The pseudo-second-order kinetic model described the kinetic data well and the intra-particle diffusion model was appropriate for characterizing the kinetic adsorption. HCPD could be easily regenerated and the regenerated polymers were effectively recycled for five times without significant loss of the equilibrium capacity. Moreover, Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) results revealed that the chelating coordination of the amino and carbonyl groups with Cu2+ was the main driving force for the adsorption.

中文翻译：

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用于 Cu2+ 吸附的极性改性树枝状后交联聚合物

合成了极性改性的树枝状后交联聚合物 HCPD，并将其用于从水溶液中吸附去除 Cu2+。结果表明，聚合物上载有 5.12 mmol/g 氨基和 2.25 mmol/g 羰基，这些基团显着有利于 Cu2+ 的去除。最大容量在 313 K 时达到 157.8 mg/g，并随着温度的升高而增加。Langmuir 模型很好地表征了平衡数据，并且化学相互作用涉及 49.50 kJ/mol 的焓变。准二级动力学模型很好地描述了动力学数据，颗粒内扩散模型适用于表征动力学吸附。HCPD 可以很容易地再生，并且再生的聚合物可以有效地循环使用 5 次而没有显着的平衡容量损失。此外，傅里叶变换红外 (FT-IR) 和 X 射线光电子能谱 (XPS) 结果表明，氨基和羰基与 Cu2+ 的螯合配位是吸附的主要驱动力。