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dc.contributor.author성기훈-
dc.date.accessioned2019-11-26T05:33:39Z-
dc.date.available2019-11-26T05:33:39Z-
dc.date.issued2017-06-
dc.identifier.citationJOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 792, page. 72-78en_US
dc.identifier.issn1572-6657-
dc.identifier.issn1873-2569-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S157266571730190X?via%3Dihub-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/114600-
dc.description.abstractWe developed electrochemical microfluidic devices containing Au-Ag bimetallic nanoparticles on single-walled carbon nanotube (SWCNT) electrodes for precise, rapid and non-enzymatic electrochemical detection of hydrogen peroxide (H2O2). A homogeneous SWCNT layer on a glass substrate was patterned by a standard photolithography method and an O-2-plasma technique. The patterned SWCNT layers were used as working electrode, counter electrode, and reference electrode in a 1 mm wide and 23 pm deep microchannel. To enhance the electrochemical catalytic properties of the working electrode, Au covered Ag nanoparticles (NPs) were electrochemically deposited on the SWCNT working electrode with current streaming solution into a microfluidic channel. The.AgNPs had catalytic activity to improve the reduction of H2O2 combined with AuNPs, which could support catalytic reaction of AgNPs. The reduction in H2O2 in fabricated devices was monitored at an optimized condition and was linear with H2O2 concentration, resulting in a sensitivity of 13.1 mu A.cm(-2).mM(-1), a correlation coefficient of r(2) = 0.985, and limit of detection 26.8 mu M (S/N = 3). For the analysis of real samples, diluted antiseptic solutions containing 3 wt% H2O2 were used to determine the concentration of H2O2 in the pharmaceutical sample. The recovery values ranged from 97% to 107%, and relative standard deviations were below 5%. We expect that the developed microfluidic sensor is a prospective electrochemical platform for accurate, reproducible non-enzymatic detection of H2O2. (c) 2017 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipThis research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2008-0061891).en_US
dc.language.isoen_USen_US
dc.publisherELSEVIER SCIENCE SAen_US
dc.subjectAu-Ag nanoparticlesen_US
dc.subjectMicrofluidic deviceen_US
dc.subjectElectrocatalysisen_US
dc.subjectHydrogen peroxideen_US
dc.subjectSingle-walled carbon nanotubeen_US
dc.titleContinuous electrochemical detection of hydrogen peroxide by Au-Ag bimetallic nanoparticles in microfluidic devicesen_US
dc.typeArticleen_US
dc.relation.volume792-
dc.identifier.doi10.1016/j.jelechem.2017.03.027-
dc.relation.page72-78-
dc.relation.journalJOURNAL OF ELECTROANALYTICAL CHEMISTRY-
dc.contributor.googleauthorKo, Euna-
dc.contributor.googleauthorVan-Khue Tran-
dc.contributor.googleauthorGeng, Yanfang-
dc.contributor.googleauthorChung, Woo Sung-
dc.contributor.googleauthorPark, Chan Ho-
dc.contributor.googleauthorKim, Min Ki-
dc.contributor.googleauthorJin, Ga Hyun-
dc.contributor.googleauthorSeong, Gi Hun-
dc.relation.code2017001604-
dc.sector.campusS-
dc.sector.daehakGRADUATE SCHOOL[S]-
dc.sector.departmentDEPARTMENT OF BIONANOTECHNOLOGY-
dc.identifier.pidghseong-
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GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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