文献速递|南京师范大学ACB:用于过氧化单硫酸盐活化的笼中笼超晶格 FeSeS@C: 表面酸度调节铁的自旋态

第一作者：Qiang Zhong

通讯作者：杨绍贵/何欢 教授

通讯单位：南京师范大学环境学院

DOI:10.1016/j.apcatb.2024.124539

Fig. 1. (a) Synthesis process for FeSeS@C-4 cage-in-cage superlattices, (b) atomic force microscopy (AFM) image and its height profile (inset), (c) scanning electron microscopy (SEM) and its magnification (inset), (d) transmission electron microscopy (TEM), (e) high-resolution TEM (HRTEM) and FFT image (inset), (f) STEM image and corresponding elemental mapping of FeSeS@C-4 superlattices.

Fig. 2. (a) XRD patterns, (b) Raman spectra, (c) N2 adsorption/desorption isotherms, and high-resolution XPS spectra of the as-synthesized catalysts (d) Fe 2p, (e) Se 3d, and (f) S 2p&Se 3p.

Fig. 3. (a) DTZ degradation in various systems and (b) corresponding first-order kinetic analysis and degradation rate results, (c) recycling properties of FeSeS@C-4/PMS system for DTZ degradation, (d) degradation of multiple pollutants by FeSeS@C-4, (e) influences of different ions on DTZ degradation, (f) DTZ degradation rate in different natural waters in FeSeS@C-4/PMS system. Reaction conditions: [catalyst]0 = 0.2 g/L, [PMS]0 = 1.5 mM, [DTZ]0 = 30.0 mg/L, [inorganic ions]0 = 10 mM, [HA]0 = 10 mg/L.

Fig. 4. (a) The optimized molecule structure of DTZ, (b) HOMO of DTZ, and (c) degradation pathways of DTZ in FeSeS@C-4/PMS system.

Fig. 5. (a) Effects of various quenchers on DTZ degradation in FeSeS@C-4/PMS system, and (b-d) EPR spectra in different reaction systems. Reaction conditions: ([DTZ]0=30 mg/L, [PMS]0=1.5 mM, [catalyst]0= 0.2 g/L).

Fig. 6. (a) KSCN poisoning experiment, (b) UV–vis spectra of FeSeS@C-4/Fe3+ suspension in the presence of phenanthroline, (c) cyclic voltammetry (CV) curves, (d) Raman spectra of various reaction systems.