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Enzymeless Glucose Detection Based on CoO/Graphene Microsphere Hybrids
Author(s) -
Ci Suqin,
Mao Shun,
Huang Taizhong,
Wen Zhenhai,
Steeber Douglas A.,
Chen Junhong
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201300645
Subject(s) - detection limit , graphene , microsphere , materials science , reproducibility , oxide , analytical chemistry (journal) , chromatography , biomedical engineering , nanotechnology , nuclear chemistry , chemistry , chemical engineering , medicine , metallurgy , engineering
An ultrasonic nebulizer‐based spray method was developed to fabricate microshpere hybrids of crumpled graphene (CG) loading cobalt oxide (CoO). The as‐prepared CoO/CG microsphere hybrids were used for constructing an enzymeless sensor for glucose detection in alkaline solution. The as‐developed enzymeless glucose sensor exhibited rapid response (less than 3 s), high sensitivity (669.78 µA mM −1 cm −2 ), wide detection range (0.83 µM–8.61 mM), good reproducibility and stability, and low detection limit (0.46 µM) ( S / N =3). Moreover, the detection of glucose in human blood serum samples with the as‐developed sensor agreed well with the results obtained from commercial glucose meters.