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Reusable and Long-Lasting Active Microcleaners for Heterogeneous Water Remediation

机译：可重复使用且持久耐用的活性微清洁剂，用于修复异质水

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摘要

Self-powered micromachines are promising tools for future environmental remediation technology. Waste-water treatment and water reuse is an essential part of environmental sustainability. Herein, we present reusable Fe/Pt multi-functional active microcleaners that are capable of degrading organic pollutants (malachite green and 4-nitrophenol) by generated hydroxyl radicals via a Fenton-like reaction. Various different properties of microcleaners, such as the effect of their size, short-term storage, long-term storage, reusability, continuous swimming capability, surface composition, and mechanical properties, are studied. It is found that these microcleaners can continuously swim for more than 24 hours and can be stored more than 5 weeks during multiple cleaning cycles. The produced microcleaners can also be reused, which reduces the cost of the process. During the reuse cycles the outer iron surface of the Fe/Pt microcleaners generates the in-situ, heterogeneous Fenton catalyst and releases a low concentration of iron into the treated water, while the mechanical properties also appear to be improved due to both its surface composition and structural changes. The microcleaners are characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), nanoindentation, and fi nite-element modeling (FEM).
机译：自供电微机是未来环境修复技术的有前途的工具。废水处理和水回用是环境可持续性的重要组成部分。在本文中，我们介绍了可重复使用的Fe / Pt多功能活性微型清洁剂，该清洁剂能够通过Fenton样反应通过生成的羟基自由基降解有机污染物（孔雀石绿和4-硝基苯酚）。研究了微型清洁器的各种不同特性，例如其尺寸，短期存储，长期存储，可重复使用性，连续游泳能力，表面成分和机械性能的影响。发现这些微型清洁器可以连续游泳超过24小时，并且在多个清洁周期中可以存放5周以上。所生产的微型清洁器也可以重复使用，从而降低了处理成本。在重复使用周期中，Fe / Pt微型清洁器的外铁表面会生成原位非均质Fenton催化剂，并向处理后的水中释放出低浓度的铁，同时由于其表面成分，机械性能似乎也得到了改善和结构变化。微型清洁器的特征在于扫描电子显微镜（SEM），X射线光电子能谱（XPS），纳米压痕和有限元建模（FEM）。

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  • 来源
    《Advanced Functional Materials》 |2016年第23期|4152-4161|共10页
  • 作者

    Parmar Jemish; Vilela Diana; Pellicer Eva; Esque-de los Ojos Daniel; Sort Jordi; Sanchez Samuel;

  • 作者单位

    Max Planck Inst Intelligent Syst, Heisenbergstr 3, D-70569 Stuttgart, Germany|Inst Bioengn Catalonia IBEC, Baldiri & Reixac 10-12, Barcelona 08028, Spain;

    Max Planck Inst Intelligent Syst, Heisenbergstr 3, D-70569 Stuttgart, Germany;

    Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain;

    Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain|Univ Manchester, Sch Mat, Oxford Rd, Manchester M13 9PL, Lancs, England;

    Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain|ICREA, Psg Lluis Companys 23, Barcelona 08010, Spain;

    Max Planck Inst Intelligent Syst, Heisenbergstr 3, D-70569 Stuttgart, Germany|Inst Bioengn Catalonia IBEC, Baldiri & Reixac 10-12, Barcelona 08028, Spain|ICREA, Psg Lluis Companys 23, Barcelona 08010, Spain;

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