Scavenger-free and self-powered photocathodic sensing system for aqueous hydrogen peroxide monitoring by CuO/ZnO nanostructure
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wu, Hao | - |
dc.contributor.author | Chung, Hoi Ying | - |
dc.contributor.author | Tsang, Daniel C. W. | - |
dc.contributor.author | Huang, Nay Ming | - |
dc.contributor.author | Xie, Zhirun | - |
dc.contributor.author | Lim, Hong Ngee | - |
dc.contributor.author | Ok, Yong Sik | - |
dc.contributor.author | Ng, Yun Hau | - |
dc.date.accessioned | 2021-08-30T08:14:11Z | - |
dc.date.available | 2021-08-30T08:14:11Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-11-23 | - |
dc.identifier.issn | 0009-2509 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/51463 | - |
dc.description.abstract | A scavenger-free and self-powered photoelectrochemical sensor is developed to rapidly detect hydrogen peroxide (H2O2) in the aqueous phase. The resulting CuO/ZnO photocathode composite exhibits two-times higher photocurrent density than the bare CuO under simulated sunlight irradiation, attributed to the formed CuO/ZnO heterojunction with well-aligned band energy levels which promotes the interfacial charge separation of photogenerated electron-hole pairs. Herein, the resulting photocathode composite is assembled as a photoelectrochemical hydrogen peroxide sensor, which shows an instant response within 0.1 s and an approximately 3-fold increase in photocurrent density upon adding 30 mM of H2O2 into the electrolyte. The results further demonstrate that the effect of H2O2 on photocurrent response is concentration-dependent over the wide linear ranges of 0.2-1.0 mM and 1.0-8.0 mM with strong correlations (R-2) of 0.992 and 0.986, respectively. The proposed CuO/ZnO photocathode composite can guide the design of efficient hybrid photoelectrodes for solar energy conversion applications. (C) 2020 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | PHOTOELECTROCHEMICAL DETERMINATION | - |
dc.subject | PHOTOCATALYTIC DEGRADATION | - |
dc.subject | NANOTUBE ARRAY | - |
dc.subject | WASTE-WATER | - |
dc.subject | ZNO | - |
dc.subject | CARBON | - |
dc.subject | OXIDE | - |
dc.subject | CU2O | - |
dc.subject | DISINFECTION | - |
dc.subject | NANOWIRES | - |
dc.title | Scavenger-free and self-powered photocathodic sensing system for aqueous hydrogen peroxide monitoring by CuO/ZnO nanostructure | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ok, Yong Sik | - |
dc.identifier.doi | 10.1016/j.ces.2020.115886 | - |
dc.identifier.scopusid | 2-s2.0-85086386058 | - |
dc.identifier.wosid | 000573581900001 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING SCIENCE, v.226 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING SCIENCE | - |
dc.citation.title | CHEMICAL ENGINEERING SCIENCE | - |
dc.citation.volume | 226 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | PHOTOELECTROCHEMICAL DETERMINATION | - |
dc.subject.keywordPlus | PHOTOCATALYTIC DEGRADATION | - |
dc.subject.keywordPlus | NANOTUBE ARRAY | - |
dc.subject.keywordPlus | WASTE-WATER | - |
dc.subject.keywordPlus | ZNO | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | CU2O | - |
dc.subject.keywordPlus | DISINFECTION | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordAuthor | Photoelectrochemical sensor | - |
dc.subject.keywordAuthor | Hydrogen peroxide | - |
dc.subject.keywordAuthor | CuO/ZnO | - |
dc.subject.keywordAuthor | Interfacial charge separation | - |
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