Fig. 3: Operando characterizations of PtSe2 via synchrotron radiation AP-XPS.
From: Enhanced catalytic activity on atomically dispersed PtSe2 two-dimensional layers
a Pt 4f spectra under UHV-RT, NAP-RT, NAP-200 °C, NAP-250 °C using a photon energy of 760 eV. b The stoichiometric ratio of PtSe2 and PtSex spectrum under UHV-RT, NAP-RT, NAP-200 °C, NAP-250 °C using a photon energy of 760 eV. c Pt 4f spectra acquired using a photon energy of 240, 650, and 760 eV under NAP-200 °C. d The stoichiometric ratio of PtSe2 and PtSex spectrum in Pt 4f spectra acquired using a photon energy of 240, 650, and 760 eV under NAP-200 °C. e Reaction scheme of CO oxidation reaction on PtSe2 layer.
