Fig. 2
From: Water and seawater splitting with MgB2 plasmonic metal-based photocatalyst
Solar water splitting. Photocurrent as a function of time and external voltage, Vbias, for the integrated water splitting device under illumination a solar light simulator: (a) nanostructured MgB2 photoanode and the Pt cathode submerged in deionised water; (b) nanostructured MgB2 photoanode and the Pt cathode submerged in 0.5 M LiOH electrolyte; (c) nanostructured MgB2 photoanode and the Pt cathode submerged in 1 M NaOH electrolyte; (d) nanostructured MgB2 photoanode and the Pt cathode submerged in 0.5 M NaCl electrolyte – sea water; (e, f) photocurrents generated by blue (λ ≈ 440 nm), green (λ ≈ 540 nm), yellow-red (λ ≈ 600 nm) and red (λ ≈ 720 nm) monochromatic light in 0.5 M LiOH and 0.5 M NaCl electrolytes, respectively.
