Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor

A small external magnetic field (100–1000 Oe) was demonstrated to enhance the photocatalytic degradation of methyl orange (MO) using TiO(2) NPs in micro optofluidic chip (MOFC) reactors. The rectangular shape of the fluidic channel and TiO(2) deposited only onto the lower glass substrate leads to a...

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Autores principales: Huang, Hung Ji, Wang, Yen Han, Chau, Yuan-Fong Chou, Chiang, Hai-Pang, Wu, Jeffrey Chi-Sheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2019
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6794336/
https://www.ncbi.nlm.nih.gov/pubmed/31617012
http://dx.doi.org/10.1186/s11671-019-3153-1
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author Huang, Hung Ji
Wang, Yen Han
Chau, Yuan-Fong Chou
Chiang, Hai-Pang
Wu, Jeffrey Chi-Sheng
author_facet Huang, Hung Ji
Wang, Yen Han
Chau, Yuan-Fong Chou
Chiang, Hai-Pang
Wu, Jeffrey Chi-Sheng
author_sort Huang, Hung Ji
collection PubMed
description A small external magnetic field (100–1000 Oe) was demonstrated to enhance the photocatalytic degradation of methyl orange (MO) using TiO(2) NPs in micro optofluidic chip (MOFC) reactors. The rectangular shape of the fluidic channel and TiO(2) deposited only onto the lower glass substrate leads to a selectively enhancing photocatalytic reactions by magnetic field in specific directions. Utilizing ethyl alcohol as a scavenger presented the difference between generated hot-hole (hVB(+)) and hot-electron (eCB(−)) pathways of photocatalytic reactions. Effects of dissolved oxygen (DO) and hydroxyl ions (OH(−)) are all demonstrated in a magnetic field-enhancing photocatalytic reaction. The experimental results demonstrate great potential for practical applications utilizing low-price fixed magnets in the field of green chemistry.
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spelling pubmed-67943362019-10-24 Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor Huang, Hung Ji Wang, Yen Han Chau, Yuan-Fong Chou Chiang, Hai-Pang Wu, Jeffrey Chi-Sheng Nanoscale Res Lett Nano Express A small external magnetic field (100–1000 Oe) was demonstrated to enhance the photocatalytic degradation of methyl orange (MO) using TiO(2) NPs in micro optofluidic chip (MOFC) reactors. The rectangular shape of the fluidic channel and TiO(2) deposited only onto the lower glass substrate leads to a selectively enhancing photocatalytic reactions by magnetic field in specific directions. Utilizing ethyl alcohol as a scavenger presented the difference between generated hot-hole (hVB(+)) and hot-electron (eCB(−)) pathways of photocatalytic reactions. Effects of dissolved oxygen (DO) and hydroxyl ions (OH(−)) are all demonstrated in a magnetic field-enhancing photocatalytic reaction. The experimental results demonstrate great potential for practical applications utilizing low-price fixed magnets in the field of green chemistry. Springer US 2019-10-15 /pmc/articles/PMC6794336/ /pubmed/31617012 http://dx.doi.org/10.1186/s11671-019-3153-1 Text en © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Huang, Hung Ji
Wang, Yen Han
Chau, Yuan-Fong Chou
Chiang, Hai-Pang
Wu, Jeffrey Chi-Sheng
Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor
title Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor
title_full Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor
title_fullStr Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor
title_full_unstemmed Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor
title_short Magnetic Field-Enhancing Photocatalytic Reaction in Micro Optofluidic Chip Reactor
title_sort magnetic field-enhancing photocatalytic reaction in micro optofluidic chip reactor
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6794336/
https://www.ncbi.nlm.nih.gov/pubmed/31617012
http://dx.doi.org/10.1186/s11671-019-3153-1
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