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基于自组装 Fe-TAML 的磁性纳米结构用于快速可持续地降解双酚 A。

Self-Assembled Fe-TAML-Based Magnetic Nanostructures for Rapid and Sustainable Destruction of Bisphenol A.

机构信息

State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China.

School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, People's Republic of China.

出版信息

Bull Environ Contam Toxicol. 2024 Jan 28;112(2):30. doi: 10.1007/s00128-023-03834-1.

DOI:10.1007/s00128-023-03834-1
PMID:38281179
Abstract

This study focused on constructing iron(III)-tetraamidomacrocyclic ligand (Fe-TAML)-based magnetic nanostructures via a surfactant-assisted self-assembly (SAS) method to enhance the reactivity and recoverability of Fe-TAML activators, which have been widely employed to degrade various organic contaminants. We have fabricated Fe-TAML-based magnetic nanomaterials (Fe-TAML/CTAB@FeO, CTAB refers to cetyltrimethylammonium bromide) by adding a mixed solution of Fe-TAML and NH·HO into another mixture containing CTAB, FeCl and FeCl solutions. The as-prepared Fe-TAML/CTAB@FeO nanocomposite showed relative reactivity compared with free Fe-TAML as indicated by decomposition of bisphenol A (BPA). Moreover, our results demonstrated that the Fe-TAML/CTAB@FeO composite can be separated directly from reaction solutions by magnet adsorption and reused for at least four times. Therefore, the efficiency and recyclability of self-assembled Fe-TAML/CTAB@FeO nanostructures will enable the application of Fe-TAML-based materials with a lowered expense for environmental implication.

摘要

本研究通过表面活性剂辅助自组装 (SAS) 方法构建了基于铁(III)-四酰胺大环配体 (Fe-TAML) 的磁性纳米结构，以提高 Fe-TAML 活化剂的反应性和可回收性，Fe-TAML 活化剂已广泛用于降解各种有机污染物。我们通过将 Fe-TAML 和 NH·HO 的混合溶液添加到含有 CTAB、FeCl 和 FeCl 溶液的另一种混合物中，制备了基于 Fe-TAML 的磁性纳米材料 (Fe-TAML/CTAB@FeO，CTAB 是十六烷基三甲基溴化铵)。与游离 Fe-TAML 相比，所制备的 Fe-TAML/CTAB@FeO 纳米复合材料在双酚 A (BPA) 的分解中表现出相对反应性。此外，我们的结果表明，Fe-TAML/CTAB@FeO 复合材料可以通过磁吸附直接从反应溶液中分离出来，并至少重复使用四次。因此，自组装的 Fe-TAML/CTAB@FeO 纳米结构的效率和可回收性将使基于 Fe-TAML 的材料的应用成为可能，同时降低对环境的影响。

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本文引用的文献

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Mechanisms for the dissolved biochar promoted iron dissolution and consequential chromium release.溶解生物炭促进铁溶解及随之产生的铬释放的机理。
Sci Total Environ. 2021 Nov 20;796:148923. doi: 10.1016/j.scitotenv.2021.148923. Epub 2021 Jul 9.
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Rapid Destruction of Tetrabromobisphenol A by Iron(III)-Tetraamidomacrocyclic Ligand/Layered Double Hydroxide Composite/HO System.铁(III)-四氨大环配体/层状双氢氧化物复合材料/HO 体系快速降解四溴双酚 A。
Environ Sci Technol. 2017 Jan 3;51(1):488-496. doi: 10.1021/acs.est.6b04294. Epub 2016 Dec 15.
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Heterogeneous Degradation of Organic Pollutants by Persulfate Activated by CuO-Fe3O4: Mechanism, Stability, and Effects of pH and Bicarbonate Ions.氧化铜-四氧化三铁活化过硫酸盐对有机污染物的非均相降解：机理、稳定性及 pH 值和碳酸氢根离子的影响。
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Electrocatalytic oxygen evolution with an immobilized TAML activator.固定化 TAML 激活剂的电催化氧气析出。
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7
TAML activator/peroxide-catalyzed facile oxidative degradation of the persistent explosives trinitrotoluene and trinitrobenzene in micellar solutions.TAML 激活剂/过氧化物催化胶束溶液中持久性炸药三硝基甲苯和三硝基苯的简单氧化降解。
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