Hierarchical optofluidic microreactor for water purification using an array of TiO2 nanostructures
DC Field | Value | Language |
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dc.contributor.author | Kim, Hyejeong | - |
dc.contributor.author | Kwon, Hyunah | - |
dc.contributor.author | Song, Ryungeun | - |
dc.contributor.author | Shin, Seonghun | - |
dc.contributor.author | Ham, So-Young | - |
dc.contributor.author | Park, Hee-Deung | - |
dc.contributor.author | Lee, Jinkee | - |
dc.contributor.author | Fischer, Peer | - |
dc.contributor.author | Bodenschatz, Eberhard | - |
dc.date.accessioned | 2022-12-08T16:42:26Z | - |
dc.date.available | 2022-12-08T16:42:26Z | - |
dc.date.created | 2022-12-08 | - |
dc.date.issued | 2022-11-10 | - |
dc.identifier.issn | 2059-7037 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/146499 | - |
dc.description.abstract | Clean water for human consumption is, in many places, a scarce resource, and efficient schemes to purify water are in great demand. Here, we describe a method to dramatically increase the efficiency of a photocatalytic water purification microreactor. Our hierarchical optofluidic microreactor combines the advantages of a nanostructured photocatalyst with light harvesting by base substrates, together with a herringbone micromixer for the enhanced transport of reactants. The herringbone micromixer further improves the reaction efficiency of the nanostructured photocatalyst by generating counter-rotating vortices along the flow direction. In addition, the use of metal-based substrates underneath the nanostructured catalyst increases the purification capacity by improving the light-harvesting efficiency. The photocatalyst is grown from TiO2 as a nanohelix film, which exhibits a large surface-to-volume ratio and a reactive microstructure. We show that the hierarchical structuring with micro- to nanoscale features results in a device with markedly increased photocatalytic activity as compared with a solid unstructured catalyst surface. This is evidenced by the successful degradation of persistent aqueous contaminants, sulfamethoxazole, and polystyrene microplastics. The design can potentially be implemented with solar photocatalysts in flow-through water purification systems. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.subject | PHOTOCATALYTIC DEGRADATION | - |
dc.subject | RHODAMINE 6G | - |
dc.subject | REMOVAL | - |
dc.subject | SULFAMETHOXAZOLE | - |
dc.subject | OPTIMIZATION | - |
dc.subject | MICROMIXERS | - |
dc.subject | PERFORMANCE | - |
dc.subject | EFFICIENCY | - |
dc.subject | MIXER | - |
dc.subject | LASER | - |
dc.title | Hierarchical optofluidic microreactor for water purification using an array of TiO2 nanostructures | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hyejeong | - |
dc.identifier.doi | 10.1038/s41545-022-00204-y | - |
dc.identifier.scopusid | 2-s2.0-85141862145 | - |
dc.identifier.wosid | 000881605000001 | - |
dc.identifier.bibliographicCitation | NPJ CLEAN WATER, v.5, no.1 | - |
dc.relation.isPartOf | NPJ CLEAN WATER | - |
dc.citation.title | NPJ CLEAN WATER | - |
dc.citation.volume | 5 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalResearchArea | Water Resources | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.relation.journalWebOfScienceCategory | Water Resources | - |
dc.subject.keywordPlus | PHOTOCATALYTIC DEGRADATION | - |
dc.subject.keywordPlus | RHODAMINE 6G | - |
dc.subject.keywordPlus | REMOVAL | - |
dc.subject.keywordPlus | SULFAMETHOXAZOLE | - |
dc.subject.keywordPlus | OPTIMIZATION | - |
dc.subject.keywordPlus | MICROMIXERS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | MIXER | - |
dc.subject.keywordPlus | LASER | - |
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