Exploring the roles of oxygen species in H2 oxidation at β-MnO2 surfaces using operando DRIFTS-MS

The investigation on the function mechanism of oxygen vacancies at the surfaces of transition metal oxides has always been the hot spots on the heterogeneous catalytic oxidation. Here, we report O2 dissociation at Mn cation with an oxygen vacancy (OV) during H2 oxidation at β-MnO2 surfaces using operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) with a temperature-programmed reaction (TPR) cell and mass spectrometry (MS).