Fig. 3: Fundamental characterisations of the catalytic process.
From: Highly selective oxidation of benzene to phenol with air at room temperature promoted by water

a Mass spectra of generated phenol using oxygen isotopic labelled water as the reactant over Pd1.25Cu0.016/P25; b in situ Cu 2p XPS spectra of Pd1.25Cu0.016/P25 under the light on/off conditions; c in situ O K-edge NEXAFS spectra of Pd1.25Cu0.016/P25 in the dark/light irradiation condition; d in situ O K-edge NEXAFS spectra of P25 in the dark/light irradiation condition. e Kinetic isotopic effects of phenol generation using deuterated benzene as reactants over Pd1.25Cu0.016/P25 and bare P25 at pH = 2. f Photoluminescence spectra excited by 365 nm laser of cocatalysts-decorated P25.