期刊
ELECTROANALYSIS
卷 26, 期 1, 页码 184-190出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201300297
关键词
Graphene foam; Nickel foam; Chemical vapor deposition; Dopamine; Ascorbic acid
资金
- Medical Scientific Research Foundation of the First Affiliated Hospital of Harbin Medical University [2012BS012]
- Postdoctoral Science Foundation of Heilongjiang Province [LBH-Z11064]
- China Department of Health of Heilongjiang Province [2013M541412, 2012-555]
- Educational Commission of Heilongjiang Province [12521252]
- Innovative Talent Fund of Harbin City [2012RFQXG107]
- Postdoctoral Initial Founding of Heilongjiang Province [LBH-Q12060]
- Science Funds for the Young Innovative Talents of HUST [201306]
A three-dimensional (3D), macroporous and highly conductive graphene foam (GF) was synthesized by atmospheric pressure chemical vapor deposition (CVD). The morphologies of the GF were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The structure of the GF was investigated by X-ray diffraction (XRD) and Raman spectroscopy. The GF prepared by CVD was then transferred onto ITO coated glass, acting as an electrode, to detect dopamine (DA) and ascorbic acid (AA) by electrochemical methods. The results show that the GF exhibits high selectivity for the detection of DA and AA. It also shows high sensitivity for detection of DA with the lower detection limits of similar to 2.0 nM in the linear response up to similar to 10 mu M. This demonstrates the free-standing GF provides a promising platform as a 3D biosensing material.
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