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)

Fecha:	2016
Resumen:	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).
Ayudas:	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
Derechos:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió acceptada per publicar
Materia:	Micro-cleaners ; Catalytic micro motors ; Nano-robots ; Wastewater treatment ; Heterogeneous catalyst
Publicado en:	Advanced functional materials, Vol. 26 (2016) , p. 4152-4161, ISSN 1616-3028

DOI: 10.1002/adfm.201600381

Post-print 28 p, 5.9 MB

El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Grupo de nanoingeniería de materiales, nanomagnetismo y nanomecánica (Gnm3)
Artículos > Artículos de investigación
Artículos > Artículos publicados