Three-dimensional nitrogen-doped graphene as an ultrasensitive electrochemical sensor for the detection of dopamine

作者：Xiaomiao Feng, Yu Zhang, Jinhua Zhou, Yi Li, Shufen Chen, Lei Zhang, Yanwen Ma, Lianhui Wang, Xiaohong Yan · 发表于：Nanoscale · 年份：2014 · DOI：10.1039/c4nr06623e · 被引用次数：191 · 研究领域：Electrochemical sensors and biosensors、Conducting polymers and applications、Advanced biosensing and bioanalysis techniques

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.