Figure 4: Application of mesoporous Rh nanoparticles.

(a) Linear sweep voltammograms (LSV) of CO oxidation in 0.5 M H₂SO₄ solution and (b) CV curves of mesoporous Rh nanoparticles and Rh/B in 1 M KOH+1 M CH₃OH solution at 50 mV s⁻¹. (c) Chronoamperometric curves of mesoporous Rh nanoparticles and Rh/B in 1 M KOH+1 M CH₃OH solution at −0.4 V. (d,e) The volume fractions of CO, NO and N₂O in the effluent gas passing through (d) the commercially available Al₂O₃-supported Rh catalyst (Rh/Al₂O₃) and (e) the mesoporous Rh nanoparticles at different temperatures. (f) Volume fraction of NO (red), N₂ (blue) and N₂O gas in the effluent gas at 250 °C.