Singlet oxygen-dominated activation of peroxymonosulfate by CuO/MXene nanocomposites for efficient decontamination of carbamazepine under high salinity conditions: Performance and singlet oxygen evolution mechanism

MXenes Functionalized with Macrocyclic Hosts: From Molecular Design to Applications

“…Existing research primarily investigated the formation of intrinsic slits with well-defined sizes using polymers [20][21][22][23] , ions [24][25][26][27] , and inorganic materials [28][29][30][31][32] . More recent and existing research has placed a focus on methods of MXene-based membranes and applications in numerous fields of optoelectronics [33][34][35][36] , catalysis [37][38][39] , and energy storage [40][41][42][43][44][45] .…”

In situ synthesis of CoFe-LDH on biochar for peroxymonosulfate activation toward sulfamethoxazole degradation: cooperation of radical and non-radical pathways

“…33 However, Yang et al and Peng et al have proposed that the presence of Cl − in PMS activation does not significantly inhibit or even promote the degradation of pollutants, which could be attributed to the generation of reactive chlorine species such as Cl 2 and HOCl (eqn (2) and (3). 34,35 In this work, as seen in Fig. 5a, the addition of Cl − has a slight inhibitory effect on SMX degradation, revealing that SO 4 ˙ − and ˙OH are not responsible for SMX removal.…”

Evolution of singlet oxygen in peroxymonosulfate activation: a review

“…Generally, singlet oxygen can be qualitatively identified using chemical scavenger tests and electron paramagnetic resonance (EPR). Sodium azide (NaN 3 ), 30,31 furfuryl alcohol (FFA), 13,32 and tryptophan 33,34 are commonly adopted as scavengers in chemical probing tests; additionally, spin-trapping agents, such as TEMP, can be used to capture 1 O 2 , forming TEMPO with an intense 1 : 1 : 1 signal. Moreover, several investigations have showcased the fact that 1 O 2 , as an excited ROS, prefers to approach electronrich compounds with unsaturated CQC bonds and amine and sulfide groups, endowing it with the capability to degrade pharmaceutical and personal care products (PPCPs).…”

“…Moreover, several investigations have showcased the fact that 1 O 2 , as an excited ROS, prefers to approach electronrich compounds with unsaturated CQC bonds and amine and sulfide groups, endowing it with the capability to degrade pharmaceutical and personal care products (PPCPs). 5,20,34,35 Metal-free catalysts Traditionally, the transition metals Fe, Co, and Mn and their oxides have been considered effective activators for the PMS activation process. However, in recent years, metal-free materials have gathered an intensive impetus due to their metal-free nature, sufficient surface area, good biocompatibility, superior stability toward acidic and alkaline conditions, and adjustable electronic and physicochemical characteristics.…”

“…Moreover, several investigations have showcased the fact that 1 O 2 , as an excited ROS, prefers to approach electron-rich compounds with unsaturated CC bonds and amine and sulfide groups, endowing it with the capability to degrade pharmaceutical and personal care products (PPCPs). 5,20,34,35…”