In this study, graphene oxide (GO)‐based two‐dimensional molecular brush was fabricated by grafting polyacrylamide onto GO nanosheets for efficient removal of Pb²⁺ and Cu²⁺ from water media. Owing to the rich oxygen and nitrogen functional groups in the composites, the synthetic GO two‐dimensional molecular brush can get the maximum adsorption capacity of 268.4 mg/g for Pb²⁺ and 127.2 mg/g for Cu²⁺, respectively. Moreover, the interspaces between the stacked two‐dimensional molecular brushes provide fast pathways for the diffusion of heavy metal ions. As a result, GO‐based two‐dimensional molecular brush can reach the adsorption equilibrium within 60 min. These results indicated that the synthetic GO‐based two‐dimensional molecular brush is a promising adsorbent to separate heavy metal ions from water media.

中文翻译：

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基于氧化石墨烯的二维分子刷，可有效去除水介质中的铅和铜离子

在这项研究中，通过将聚丙烯酰胺接枝到GO纳米片上，从而有效地从水介质中去除Pb ²⁺和Cu ²⁺，制造了基于氧化石墨烯（GO）的二维分子刷。由于复合材料中富含氧和氮官能团，合成的GO二维分子刷对Pb ²⁺的最大吸附容量为268.4 mg / g，对Cu ²⁺的最大吸附容量为127.2 mg / g， 分别。此外，堆叠的二维分子刷之间的间隙为重金属离子的扩散提供了快速通道。结果，基于GO的二维分子刷可以在60分钟内达到吸附平衡。这些结果表明，合成的基于GO的二维分子刷是一种有望将重金属离子与水介质分离的吸附剂。