Reusable and long-lasting active micro-cleaners for heterogeneous water remediation
Parmar, Jemish (Max-Planck Institute for Intelligent Systems. Germany.)
Vilela, Diana (Max-Planck Institute for Intelligent Systems. Germany.)
Pellicer Vilà, Eva Maria (Universitat Autònoma de Barcelona. Departament de Física)
Esqué-de los Ojos, Daniel (Universitat Autònoma de Barcelona. Departament de Física)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Sánchez, Samuel (Institució Catalana de Recerca i Estudis Avançats)

Data:	2016
Resum:	Self-powered micro-machines are promising tools for the 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 micro-cleaners that are capable of degrading organic pollutants by generated hydroxyl radicals via Fenton-like reaction. Various different properties of micro-cleaners such as the effect of their size, short-term storage, long-term storage, reusability, continuous swimming capability, surface composition and mechanical properties are studied. We find that micro-cleaners can continuously swim for more than 24 hours and can be stored more than 5 weeks during multiple cleaning cycles. Micro-cleaners can also be reused, which reduces the cost of the process. Over the reuse cycles, the outer iron surface of the Fe/Pt micro-cleaners generates 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 surface composition and structural changes. Results have been characterized by SEM, XPS, Nanoindentation and Finite Element Modeling (FEM).
Ajuts:	European Commission 311529 Ministerio de Economía y Competitividad MAT2014-57960-C3-1-R Ministerio de Economía y Competitividad RYC-2012-10839 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1015
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Micro-cleaners ; Catalytic micro motors ; Nano-robots ; Wastewater treatment ; Heterogeneous catalyst
Publicat a:	Advanced functional materials, Vol. 26 (2016) , p. 4152-4161, ISSN 1616-3028

DOI: 10.1002/adfm.201600381

Post-print 28 p, 5.9 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Grup de nanoenginyeria de materials, nanomagnetisme i nanomecànica (Gnm3)
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