2013 Fiscal Year Final Research Report
Development of highly electroactive nitrogen-doped graphene like film electrode for nonlabel biosennsing applications
| Project/Area Number |
24655071
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Analytical chemistry
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
NIWA Osamu 独立行政法人産業技術総合研究所, バイオメディカル研究部門, 総括研究主幹 (70392644)
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| Co-Investigator(Kenkyū-buntansha) |
KATO Dai 独立行政法人産業技術総合研究所, バイオメディカル研究部門, 主任研究員 (80533190)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | カーボン薄膜 / 窒素ドープ / スパッタリング / 電気化学 / 酸素還元 / 過酸化水素 / 生体分子 |
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| Research Abstract |
A nitrogen-doped nanocarbon film electrode formed using the electron cyclotron resonance (ECR) sputtering method.The ECR sputtered CN films exhibited an enhanced fullerene-like microstructure at intermediate nitrogen concentration. This structure consisted of bent and cross-linked graphene sheets where layered areas remarkably decreased with increasing sp3 bonding. The film has a very smooth surface with an average roughness of 0.1 to 0.2 nm. These variations in the chemical structures greatly change the electrochemical performance. The N-ECR electrode shows a wider potential window due to its higher sp3 content. The N-ECR electrode (N = 9.0 at. %) shows improved electrochemical activity. The oxygen and hydrogen peroxide reduction potentials at the N-ECR electrode shifted about 0.3 and 0.15 V, respectively, and the peak height of H2O2 is greatly increased.The N-ECR electrode also shows better activity for oxidizing certain biomolecules such as guanosine and adenosine decreased.
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Research Products
(15 results)
