Dissociation of formic acid on anatase TiO2(1Â 0Â 1) probed by vibrational spectroscopy

► Formic acid adsorbs dissociatively on anatase TiO2(101) to form monodenate and bidentate formate species. ► The monodenate formate is bound to regular Ti5c4+ sites. ► The bidentate formate is located at oxygen vacancy sites.