Enriched nitrogen-doped carbon derived from expired drug with dual active sites as effective peroxymonosulfate activator: Ultra-fast sulfamethoxazole degradation and mechanism insight

Rapid Laser-Induced Highly Dispersed and Ultrafine N-Doped Graphene-Wrapped FeCo2O4 Nanoparticles for Nearly 100% Utilization and Conversion of Peroxymonosulfate into Singlet Oxygen

“…Compared to graphite nitrogen of the nitrogen atoms, pyridinic nitrogen and pyrrolic nitrogen are more likely to cause the surrounding carbon atoms to lose electrons, thus forming electron-deficient carbon and generating more active sites for the adsorption-activated PMS. 53 These analysis results are consistent with previous analysis of XPS N1s of spent and fresh LI-FeCo 2 O 4 @NDG. Consequently, NDG/FeCo 2 O 4 /NDG is easier to lose the electrons and adsorb the PMS molecules compared to other models.…”

“…The characteristic peaks can be observed at 1102 and 616 cm –1 (Figure a), which can be ascribed to S–O and SOS tensile oscillations of HSO 5 – , respectively. After the addition of LI-FeCo 2 O 4 @NDG, the peaks showed about 2 and 3 cm –1 redshifts, which were due to the reduction of the electron density of S–O in HSO 5 – . It further indicates that LI-FeCo 2 O 4 @NDG promoted the self-decomposition of PMS.…”

“…Additionally, the electron density diagram also shows that the electron density of nitrogen atoms was higher. Compared to graphite nitrogen of the nitrogen atoms, pyridinic nitrogen and pyrrolic nitrogen are more likely to cause the surrounding carbon atoms to lose electrons, thus forming electron-deficient carbon and generating more active sites for the adsorption-activated PMS . These analysis results are consistent with previous analysis of XPS N1s of spent and fresh LI-FeCo 2 O 4 @NDG.…”

“…After the addition of LI-FeCo 2 O 4 @NDG, the peaks showed about 2 and 3 cm −1 redshifts, which were due to the reduction of the electron density of S−O in HSO 5 − . 53 It further indicates that LI-FeCo 2 O 4 @NDG promoted the self-decomposition of PMS. Furthermore, the XPS survey of spent LI-FeCo 2 O 4 @NDG after the fourth recycling was compared with the fresh LI-FeCo 2 O 4 @NDG (Figure 6b).…”

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

“…In situ electron paramagnetic resonance (EPR) is carried out to immediately observe the appearance of ROS. 49 Through dissolving spin-trapping chemicals in diverse media, we employ 5,5-dimethyl-1-pyrroline- N -oxide (DMPO) to trap ˙OH/SO 4 ˙ − (water, Fig. 5G) and O 2 ˙ − (methanol, Fig.…”