Defect-engineered FeSe2−x@C with porous architecture for enhanced peroxymonosulfate-based advanced oxidation processes

The Pivotal Role of Selenium Vacancies in Defective FeSe2@MoO3 for Efficient Peroxymonosulfate Activation: Experimental and DFT Calculation

“…The high-resolution TEM (HRTEM) and SAED images (Figure d and f) verified the presence of FeSe 2 (111) and MoO 3 (021) with crystal facet distances of 0.256 and 0.326 nm, respectively. In addition, as shown in Figure e, a certain degree of lattice sinkings in the lattice fringes of FeSe 2 @MoO 3 -8 could be observed, which might be due to the V Se …”

Integrating energy-environmental functions into multifaceted lignocellulose valorization: high-performance supercapacitors and antibiotic decomposition

“…5I). 44 In Fig. 5G, the EPR spectra disclose that the representative DMPO-SO 4 adduct appears in the vicinity of DMPO-OH peaks, indicating the presence of ˙OH/SO 4 ˙ − during the activated PDS reaction.…”

“…5I). 44 In Fig. 5G, the EPR spectra disclose that the representative DMPO-SO 4 adduct appears in the vicinity of DMPO-OH peaks, indicating the presence of It is well known that PDS molecules are first adsorbed on the catalyst surface to react with active sites for generating ROS through electron migration during the catalytic process.…”

“…This non-negligible reduction in removal rate could be induced by the gradual accumulation of tetracycline in the micropores of the biochar substrate as well as the residual occupation of degradable intermediates on the surface of reactive sites, which might be fully recovered through organic solvent extraction. 44,45 On this point of retaining catalyst durability, it is irrefutable that we need to find a method of not only totally detaching the physically adsorbed antibiotics but also inhibiting metallic leaching from the Co-N-C catalyst. In short, these results demonstrate that the recyclable Co-N-C catalyst with Co nanoclusters has a large number of exposed catalytic sites, delivering favourable circumstances for efficient PDS binding and tetracycline removal.…”

Double-Confined Ultrafine Cobalt Clusters for Efficient Peroxide Activation

“…In Figure e, linear sweep voltammetry (LSV) exhibited a noticeably increased current over the Co/NC@mSiO 2 electrode upon the addition of PMS and chlorobenzene. Similarly, the chronoamperometry curves also showed a sharp drop in current density after the addition of PMS (Figure f), displaying the strong electron transfer between PMS and Co/NC@mSiO 2 to form a metastable reactive complex . The further addition of chlorobenzene to the solution caused an increased current since the Co species directly mediated electron transfer between chlorobenzene and PMS.…”