Design and synthesis of 3D hierarchical NiMoS4 nanowire arrays in situ grown on graphene foam: electrochemical determination of epinephrine

Authors：Zhang, Haopeng; Yue, Hongyan^*; Huang, Shuo; Gao, Xin; Yang, Shuai; Xie, Yanqiu; Li, Jinlong

Source：Journal of Materials Science: Materials in Electronics , 2022, 33(6): 3275-3283.

DOI：10.1007/s10854-021-07528-4

• CARBON NANOTUBES
• ASCORBIC-ACID
• DOPAMINE
• NANOCOMPOSITE
• ELECTRODE
• NOREPINEPHRINE
• NANOPARTICLES
• OXIDE

It is crucial to design and construct highly sensitive electrode materials for the detection of biomolecules. In this paper, 3D hierarchical NiMoS4 NWAs@GF was designed for the detection of epinephrine (EP). The 3D GF has a pore size of 200 mu m as a conducting matrix with remarkable electronic conductivity. The grass-like NiMoS4 NWAs on the GF have a length of about 20 mu m and the diameter about 180 nm, which not only increase the specific surface area but also provide more active sites. As expected, the NiMoS4 NWAs@GF/ITO electrode showed a remarkable electrochemical performance in the detection of EP in a wide concentration range (0-60 mu M), with a high sensitivity of 3.93 mu A mu M-1, and a low detection limit of 0.02 mu M (S/N=3). In addition, it can be used to determine EP in real samples. The NiMoS4 NWAs@GF/ITO electrode is proven to be a reliable and sensitive biosensor electrode.

• Institution
  1; 哈尔滨医科大学