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Direct Electrochemical Tyrosinase Biosensor based on Mesoporous Carbon and Co3O4 Nanorods for the Rapid Detection of Phenolic Pollutants
Wang, Xue1,2; Lu, Xianbo1; Wu, Lidong1,3; Chen, Jiping1
KeywordBiosensors Electron Transfer Mesoporous Materials Nanostructures Phenolic Chemicals
Source PublicationCHEMELECTROCHEM
2014-04-15
DOI10.1002/celc.201300208
Volume1Issue:4Pages:808-816
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectElectrochemistry
WOS Research AreaElectrochemistry
WOS KeywordDIRECT ELECTRON-TRANSFER ; GOLD-NANOPARTICLES ; GLUCOSE-OXIDASE ; CATECHOL BIOSENSOR ; POLYPYRROLE FILM ; COMPOSITE ; DOPAMINE ; PLATFORM
AbstractA novel tyrosinase (Tyr) biosensor based on a graphitized ordered mesoporous carbon/cobaltosic oxide nanorod (GMC/ Co3O4) nanocomposite is developed for the rapid detection of phenolic pollutants. By applying the GMC/Co3O4 nanocomposite as an enzyme immobilization matrix, rapid direct electron transfer between Tyr and the electrode is achieved. The biosensor exhibits a wide linear response for catechol, ranging from 5.0 x 10(-8) to 1.3 x 10(-5) m, with a limit of detection down to 25 nm and a response time of less than 2 s. The sensitivity of the biosensor based on the GMC/Co3O4 nanocomposite (6.4 AM(-1)cm(-2)) is higher than that of the biosensor based on GMC (5.0 AM(-1)cm(-2)) or Co3O4 (3.5 AM-1cm(-2)), which can be attributed to the synergistic effect of the GMC/Co3O4 nano- composite. The biosensor is further used to systematically detect mixed phenolic samples (phenol, catechol, m- cresol, p- cresol, and 4- chlorophenol) and real water samples. The biosensor- based detection results for river water and tap water samples show outstanding average recovery (92.2- 103.3%) and relative standard deviations (0.9- 7.8 %). In comparison with the conventional spectrophotometric method, the biosensor method is more rapid, sensitive, accurate, and convenient. Furthermore, the detection limit of the biosensor method is about 20 times lower than that of the spectrophotometric method. This novel biosensor is proven to be a promising alternative tool for the rapid and on- site monitoring of environmental phenolic pollutants.
Language英语
WOS IDWOS:000338296100017
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145904
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Fishery Sci, Beijing 100141, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xue,Lu, Xianbo,Wu, Lidong,et al. Direct Electrochemical Tyrosinase Biosensor based on Mesoporous Carbon and Co3O4 Nanorods for the Rapid Detection of Phenolic Pollutants[J]. CHEMELECTROCHEM,2014,1(4):808-816.
APA Wang, Xue,Lu, Xianbo,Wu, Lidong,&Chen, Jiping.(2014).Direct Electrochemical Tyrosinase Biosensor based on Mesoporous Carbon and Co3O4 Nanorods for the Rapid Detection of Phenolic Pollutants.CHEMELECTROCHEM,1(4),808-816.
MLA Wang, Xue,et al."Direct Electrochemical Tyrosinase Biosensor based on Mesoporous Carbon and Co3O4 Nanorods for the Rapid Detection of Phenolic Pollutants".CHEMELECTROCHEM 1.4(2014):808-816.
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