RESEARCH / A0231
Dual‐Path Singlet Oxygen Generation by Sulfur Vacancy Tailored Atomic Iron Assembly for Sustainable Decontamination
Read the original paper · 10.1002/adfm.202529001 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Figure 2. Multimodal characterizations for elucidating S-vacancy roles in Fe assembly. a) S-vacancy content and Fe loading in all catalysts. b) Raman spectra, c) maximum intensity of EPR spectra, and d) Mo 3d XPS spectra of etched MoS2 support with varied S vacancies. e) Formation energies of anchoring Fe atoms on MoS2 with various S vacancies. f) Fe K-edge Fourier-transformed EXAFS signals of as-prepared catalysts and relevant references (the Fe−S3 moiety in FeSA/MoSV2 were actual fitting constructions, while other samples were schematic constructions).
Figure 4. Electronic structure effect of central metal sites on 1O2 generation (M = Mn, Fe, Co, Ni, and Cu). a) Schematic S-vacancy induced center metal sites-dependent PMS activation for controllable generation of 1O2. b) Fourier-transformed EXAFS signals of MSA-MoSV2 and relevant metal foils. c) kper-site of 4-CP removal in the MSA-MoSV2/PMS system (inserted pie charts represent the contributions of reactive species). Correlations of d) kper-site and unfilled 3d orbitals originated in different catalytic systems and e) Trade-offeffect between EF-ɛd,down and magnetic moment of different central metal sites.