Magnetically driven Bi<inf>2</inf>O<inf>3</inf>/BiOCl-based hybrid microrobots for photocatalytic water remediation

Fajer Mushtaq, Miguel Guerrero, Mahmut Selman Sakar, Marcus Hoop, André M. Lindo, Jordi Sort, Xiangzhong Chen, Bradley J. Nelson, Eva Pellicer, Salvador Pané

Research output: Contribution to journalArticleResearchpeer-review

63 Citations (Scopus)

Abstract

© The Royal Society of Chemistry. 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.
Original languageEnglish
Pages (from-to)23670-23676
JournalJournal of Materials Chemistry A
Volume3
DOIs
Publication statusPublished - 29 Sep 2015

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