Figure 2.

(a) Schematic of graphene oxide encapsulated molybdenum disulfide (MoS2) nanoparticle preparation for the fabrication of electrochemical biosensors composed of myoglobin (Mb) and (b) its application to H₂O₂ detection with improved electrochemical performance. (c–d) Amperometric response curves obtained from Mb/GO@MoS₂ upon successive (c) addition of 100 nM L-ascorbic acid (AA), 100 nM sodium nitrite (NaNO₂), 100 nM sodium bicarbonate (NaHCO₃), and 100 nM H₂O₂ solutions; and by (d) addition of 100, 50, 20, and 10 nM H₂O₂ solutions. Reproduced with permission from [56], Copyright Elsevier, 2017.