Numerous countries have shown signs of environmental pollution to prioritize economic growth and benefits, leading to seriously contaminated waters. This work indicated the method to synthesize a green material, which could remove contaminants to protect the natural environment. The porosity and functionality effects of amine-functionalized activated carbon (AFAC) enhanced the removal of toxic heavy metals (THMs) in aqueous solution. The raw activated carbon (RAC) was thermally modified with ultrahigh pure nitrogen (UHPN) at 500°C and 1000°C and then amine-functionalized with coupling agent of aminopropyltriethoxysilane (APS). They were denoted as AFAC-5 and AFAC-10, respectively. The data showed an enhanced metal adsorption capacity of the AFACs, because the modification produced more desired porosity and increased amine functional groups. AFAC-10, modified at a higher temperature, showed much higher THM adsorption capacity than AFAC-5, modified at a lower temperature, and RAC. The adsorption capacity decreased in the following order: Ni > Cd > Zn, which was in good agreement with the increasing electronegativity and ionic potential and the decreasing atomic radius. The maximum THM adsorption capacity of AFAC-10 for Ni, Cd, and Zn was 242.5, 226.9, and 204.3 mg/g, respectively.

中文翻译：

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使用聚合物功能化活性炭去除重金属离子：环境经济与化学教育的各个方面。

许多国家已经表现出环境污染的迹象，优先考虑经济增长和利益，导致水域受到严重污染。这项工作表明了合成绿色材料的方法，该方法可以去除污染物以保护自然环境。胺官能化活性炭（AFAC）的孔隙率和功能性作用增强了水溶液中有毒重金属（THMs）的去除。原始活性炭（RAC）在500°C和1000°C下用超高纯氮（UHPN）进行热改性，然后用氨基丙基三乙氧基硅烷（APS）的偶联剂进行胺官能化。它们分别表示为AFAC-5和AFAC-10。数据表明，AFAC的金属吸附能力增强，因为改性产生了更多所需的孔隙率并增加了胺官能团。在较高温度下改性的AFAC-10与在较低温度下改性的AFAC-5和RAC相比，显示出更高的THM吸附能力。吸附能力按以下顺序降低：Ni> Cd> Zn，这与电负性和离子电势的增加以及原子半径的减小是一致的。AFAC-10对Ni，Cd和Zn的最大THM吸附容量分别为242.5、226.9和204.3 mg / g。