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Three-dimensional nitrogen-doped graphene as an ultrasensitive electrochemical sensor for the detection of dopamine
Xiaomiao Feng1, Yu Zhang, Jinhua Zhou
1Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, National Jiangsu Syngerstic Innovation Center for Advanced Materials (SICAM), 9 Wenyuan Road, Nanjing 210023, China. iamxmfeng@njupt.edu.cn iamywma@njupt.edu.cn.
Abstract:
Three-dimensional nitrogen-doped graphene (3D N-doped graphene) was prepared through chemical vapor deposition (CVD) by using porous nickel foam as a substrate. As a model, a dopamine biosensor was constructed based on the 3D N-doped graphene porous foam. Electrochemical experiments exhibited that this biosensor had a remarkable detection ability with a wide linear detection range from 3 × 10(-6) M to 1 × 10(-4) M and a low detection limit of 1 nM. Moreover, the fabricated biosensor also showed an excellent anti-interference ability, reproducibility, and stability.
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