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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Detalles Bibliográficos
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
Descripción
Sumario: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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