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Accelerating the Fenton Reaction with a Magnetic Microswarm for Enhanced Water Remediation
ChemNanoMat ( IF 2.6 ) Pub Date : 2021-04-02 , DOI: 10.1002/cnma.202100108 Qinglong Wang 1 , Fengtong Ji 1 , Shijie Wang 1 , Li Zhang 2
ChemNanoMat ( IF 2.6 ) Pub Date : 2021-04-02 , DOI: 10.1002/cnma.202100108 Qinglong Wang 1 , Fengtong Ji 1 , Shijie Wang 1 , Li Zhang 2
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The Fenton reaction, among one of the advanced oxidation processes, has been widely employed for water remediation. Here, we report using magnetic Fe3O4 nanoparticles to accelerate the degradation of the simulative organic pollutant (i. e., Rhodamine B) in a collective manner, featuring an enhanced Fenton reaction. Fe2+ ions released from Fe3O4 nanoparticles function as a reducing agent to trigger the Fenton reaction in an acidic environment. A large number of Fe3O4 nanoparticles form the microswarm by applying a rotating magnetic field, which would further improve the intermixing and reaction diffusion as a result of the hydrodynamic vortex created by magnetic chains. Moreover, the microswarm possesses the ability of targeted degradation achieved by the collective locomotion, and such a collective manner would ultimately avoid the loss of Fe3O4 nanoparticles during the whole process. Besides, Fe3O4 nanoparticles can be magnetically collected and rinsed for recycling use, with a retained dye degradation rate of 73.5% after 3 degradation cycles. As a result, the magnetic microswarm holds advantages in terms of low cost, enhanced degradation, recyclability, and targeted decontamination, which is promising for the removal of organic pollutants.
中文翻译：
用磁性微群加速芬顿反应以增强水修复
芬顿反应是高级氧化工艺之一，已广泛用于水修复。在这里，我们报告使用磁性 Fe 3 O 4纳米粒子以集体方式加速模拟有机污染物（即罗丹明 B）的降解，具有增强的芬顿反应。从Fe 3 O 4纳米粒子释放的Fe 2+离子作为还原剂在酸性环境中触发芬顿反应。大量的Fe 3 O 4纳米粒子通过施加旋转磁场形成微群，由于磁链产生的流体动力涡流，这将进一步改善混合和反应扩散。此外，微群具有通过集体运动实现的定向降解能力，这种集体方式将最终避免Fe 3 O 4纳米粒子在整个过程中的损失。此外，Fe 3 O 4纳米粒子可以通过磁性收集和冲洗循环使用，在 3 个降解循环后保留的染料降解率为 73.5%。因此，磁性微群在低成本、增强降解、可回收和有针对性的去污方面具有优势，有望用于去除有机污染物。
更新日期：2021-06-04
中文翻译：
用磁性微群加速芬顿反应以增强水修复
芬顿反应是高级氧化工艺之一，已广泛用于水修复。在这里，我们报告使用磁性 Fe 3 O 4纳米粒子以集体方式加速模拟有机污染物（即罗丹明 B）的降解，具有增强的芬顿反应。从Fe 3 O 4纳米粒子释放的Fe 2+离子作为还原剂在酸性环境中触发芬顿反应。大量的Fe 3 O 4纳米粒子通过施加旋转磁场形成微群，由于磁链产生的流体动力涡流，这将进一步改善混合和反应扩散。此外，微群具有通过集体运动实现的定向降解能力，这种集体方式将最终避免Fe 3 O 4纳米粒子在整个过程中的损失。此外，Fe 3 O 4纳米粒子可以通过磁性收集和冲洗循环使用，在 3 个降解循环后保留的染料降解率为 73.5%。因此，磁性微群在低成本、增强降解、可回收和有针对性的去污方面具有优势，有望用于去除有机污染物。
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