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

Figure 4

The TEM (a), HRTEM (b), and the survey, Pd 3d, P 2p, and Co 2p XPS spectra (c)–(f) of the C/Co₂P/Pd composites.

(a)

(b)

(c)

(d)

(e)

(f)