Figure 5
From: Spectroscopically clean Au nanoparticles for catalytic decomposition of hydrogen peroxide

H2O2 decomposition over 50 nm Au/SiO2. (a) Dependence of decomposition rates on the Au NPs with and without thermal treatment at 250 °C for 2 h. (b) Evolution of in situ Raman spectra as a function of reaction time plus a comparative spectrum for H2O2 over SiO2 showed the presence of reaction intermediates with band at 822 cm−1.