| 聚(N-(2-乙氨基))天冬酰胺的合成及其对Pb2+和Cu2+螯合的研究 |
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| 引用本文： | 杨萤,马博锐,王芳,马政生. 聚(N-(2-乙氨基))天冬酰胺的合成及其对Pb2+和Cu2+螯合的研究[J]. 化学世界, 2022, 63(1): 22-29. DOI: 10.19500/j.cnki.0367-6358.20201016 |
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| 作者姓名： | 杨萤 马博锐 王芳 马政生 |
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| 作者单位： | 西北大学化工学院,陕西西安,710069 |
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| 基金项目： | 西安市产学研(No.CXY08007)资助项目。 |
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| 摘 要： | 通过聚琥珀酰亚胺(PSI)与乙二胺的加成反应得到聚(N-(2-乙氨基)天冬酰胺)(PEAA),可以实现在水溶液中与Pb2+和Cu2+螯合,Pb2+的最大螯合量为49.81mg/g,去除率为92.98％ ;Cu2+的最大螯合量为19.01mg/g,去除率为83.62％.通过红外光谱(FT-IR)和X射线光电子能谱(XPS...
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| 关 键 词： | 聚[N-(2-乙氨基)天冬酰胺] 螯合 Pb2+ Cu2+ |
Synthesis of Poly(N-(2-ethylamino)asparagine) and Its Application in Pb~(2+) and Cu~(2+) Removal |
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| Yang Ying,Ma Borui,Wang Fang,Ma Zhengsheng. Synthesis of Poly(N-(2-ethylamino)asparagine) and Its Application in Pb~(2+) and Cu~(2+) Removal[J]. Chemical World, 2022, 63(1): 22-29. DOI: 10.19500/j.cnki.0367-6358.20201016 |
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| Authors: | Yang Ying Ma Borui Wang Fang Ma Zhengsheng |
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| Affiliation: | (School of Chemical Engineering,Northwest University,Xi’an,Shaanxi 710069,China) |
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| Abstract: | Poly(N-(2-ethylamino)asparagine)(PEAA) was obtained by the addition reaction of polysuccinimide(PSI) and ethylenediamine, which can chelate with Pb2+and Cu2+in aqueous solution. The maximum chelating capacities for Pb2+is 49.81 mg/g, and the removal rate is as high as 92.98%;the maximum chelating capacities for Cu2+is 19.01 mg/g, and the removal rate reaches 83.62%. Fourier transform infrared spectroscopy(FT-IR) and X-ray photoelectron spectroscopy(XPS) were used to study the adsorption mechanism for Pb(4f) and Cu(2p), and the results showed that metal ions are chemically adsorbed to the amide, amino and carboxyl groups on PEAA by coordination bond. It is found by scanning electron microscope(SEM) that the surface of PEAA is rough, and the internal circular pore distribution is relatively uniform, which facilitates the occurrence of adsorption. Thus, PEAA can be used as a new environmentally friendly chelating agent to remove heavy metal ions. |
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| Keywords: | poly-[N-(2-ethylamino)asparagine] chelation Pb2+ Cu2+ |
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