RESEARCH / A0537
MXene-based 2D/2D Ti3C2/TiO2 heterojunction with spatially separated redox sites for efficient photocatalytic N2 reduction towards NH3
Read the original paper · 10.1016/j.jmst.2024.06.038 ↗
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) Ti K -edge XANES spectra. Inset gives average Ti valence state determination of Ti3 C2 MXene and TiO2 Ns using the linear combination fitting of absorption edge energies. (b) Corresponding Fourier-transformed EXAFS spectra in R space of Ti foil, reference TiO2 , TiO2 Ns and Ti3 C2 MXene. (c) High-resolution XPS Ti 2p spectra of TiO2 Ns and Ti3 C2 MXene. (d) EPR spectra of TiO2 Ns and 6TC/T with and without light irradiation. (e) N2 -TPD curves of TiO2 Ns and 6TC/T. (f) Transient photocurrent responses of TiO2 Ns and 6TC/T at Ar and N2 atmospheres. In-situ FTIR spectra for photocatalytic N2 reduction process over (g) TiO2 Ns, (h) 6TC/T and (i) 6TC-300/T.