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

doi:https://doi.org/10.1039/c5ta05825b

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

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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 language	English
Pages (from-to)	23670-23676
Journal	Journal of Materials Chemistry A
Volume	3
DOIs	https://doi.org/10.1039/c5ta05825b
Publication status	Published - 29 Sept 2015

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@article{b114aa8ef0184c1c97179f0c4d38e1df,

title = "Magnetically driven Bi2O3/BiOCl-based hybrid microrobots for photocatalytic water remediation",

abstract = "{\textcopyright} 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.",

author = "Fajer Mushtaq and Miguel Guerrero and Sakar, {Mahmut Selman} and Marcus Hoop and Lindo, {Andr{\'e} M.} and Jordi Sort and Xiangzhong Chen and Nelson, {Bradley J.} and Eva Pellicer and Salvador Pan{\'e}",

year = "2015",

month = sep,

day = "29",

doi = "https://doi.org/10.1039/c5ta05825b",

language = "English",

volume = "3",

pages = "23670--23676",

}

TY - JOUR

T1 - Magnetically driven Bi2O3/BiOCl-based hybrid microrobots for photocatalytic water remediation

AU - Mushtaq, Fajer

AU - Guerrero, Miguel

AU - Sakar, Mahmut Selman

AU - Hoop, Marcus

AU - Lindo, André M.

AU - Sort, Jordi

AU - Chen, Xiangzhong

AU - Nelson, Bradley J.

AU - Pellicer, Eva

AU - Pané, Salvador

PY - 2015/9/29

Y1 - 2015/9/29

N2 - © 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.

AB - © 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.

U2 - https://doi.org/10.1039/c5ta05825b

DO - https://doi.org/10.1039/c5ta05825b

M3 - Article

VL - 3

SP - 23670

EP - 23676

ER -

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

Abstract

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