RESEARCH / A0209
Built-in Electric Field Empowering Dual Lewis Acid Sites for Efficient Substrate Selective Adsorption to Accelerate Dehydrogenation Kinetics in HMF Electrooxidation
Read the original paper · 10.1016/j.apcatb.2026.126425 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 2. (a) UPS spectra of CuCo2O4 and CuCo2O4/CeO2; (b) Schematic illustration of the BEF formation mechanism; High-resolution XPS spectra of (c) Cu 2p, (d) Co2p3/2 for CuCo2O4 and CuCo2O4/CeO2; (e) EPR spectra of CuCo2O4 and CuCo2O4/CeO2; XANES spectra of (f) Cu K-edge and (g) Co K-edge; (h)Average Cu and Co oxidation state determination in CuCo2O4 and CuCo2O4/CeO2, using the Cu K-edge energy shift of the reference Cu2O and CuO and the Co K-edge energy shift of the reference Co foil and CoO; (i) k3-weighted Fourier-transformed EXAFS spectra in R-space at the Cu K-edge and Co K-edge; Co K-edge wavelet transform (WT) spectra of (j) CuCo2O4 and (k)CuCo2O4/CeO2.