Amperometric Formaldehyde Sensor Based on a Pd Nanocrystal Modified C/Co₂P Electrode

Figure 6

(a) CVs of the C/Co₂P/GCE (A), C/Pd/GCE (B), and C/Co₂P/Pd/GCE (C) in 0.5 M H₂SO₄ solution. Scan rate: 50 mV/s. (b) CV of the C/Co₂P/Pd/GCE in 0.5 M H₂SO₄ solution containing 5 mM formaldehyde from −0.2 V to 1.0 V at 50 mV/s.

(a)

(b)