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  4. Magnetically Driven Bi2O3/BiOCl-based Hybrid Microrobots for Photocatalytic Water Remediation
 
research article

Magnetically Driven Bi2O3/BiOCl-based Hybrid Microrobots for Photocatalytic Water Remediation

Mushtaq, Fajer
•
Guerrero, Miguel
•
Sakar, Selman  
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2015
Journal of Materials Chemistry. a

In this work, we have developed 3D hybrid microstructures consisting of a short ferromagnetic CoNi segment for wireless magnetic control, coupled to a photocatalytic Bi2O3/BiOCl segment for water remediation under UV-visible light. These hybrid microstructures (pillars and helices) were fabricated using 3D photolithography and template-assisted electrodeposition, followed by in situ creation of a Bi2O3/BiOCl heterojunction after oxidation of Bi. This heterojunction is not only active under a wider solar spectrum but also ensures sufficient charge separation and hence low electron–hole recombination rate. As a result, these hybrid microstructures were able to degrade rhodamine B dye with a 90% efficiency in 6 hours. On application of magnetic fields we were able to precisely control the structures and collect them for reuse. Cytotoxicity tests were performed on our hybrid structures and a 95% cell viability was reported showing that our structures are biocompatible.

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Type
research article
DOI
10.1039/C5TA05825B
Author(s)
Mushtaq, Fajer
Guerrero, Miguel
Sakar, Selman  
Hoop, Marcus
Lindo, Andre
Sort, Jordi
Chen, Xiangzhong
Nelson, Bradley
Pellicer, Eva
Pane, Salvador
Date Issued

2015

Publisher

Royal Society of Chemistry

Published in
Journal of Materials Chemistry. a
Volume

3

Start page

23670

End page

23676

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
MICROBS  
Available on Infoscience
February 16, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/123537
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