Fig. 4: Investigation on the role of lattice-O in CH4 oxidation.
From: Insight into selectivity of photocatalytic methane oxidation to formaldehyde on tungsten trioxide
In situ DRIFTS spectra of (a) WO3{001} and (b) WO3{110} in CH4 atmosphere under different light irradiation time without H2O addition. Here, * denotes an adsorption site on surface. The inset is the magnified W-O peak. c High-resolution O1s XPS spectra of WO3{001} and (d) WO3{110} after reaction in CH4 atmosphere.
