Renewable and robust biomass waste-derived Co-doped carbon aerogels for PMS activation: Catalytic mechanisms and phytotoxicity assessment

Synergetic effect of photocatalysis and peroxymonosulfate activation by CoTiO3/SBA-15, NiTiO3/SBA-15 and Fe2TiO5/SBA-15 for efficient photocatalytic removal of oxytetracycline hydrochloride

“…The OTC degradation rate improved with the increase of PMS dosage in all systems; the more PMS were added, the more SO 4 ˙− were produced. 46 After addition of more than 0.2 mmol PMS, the degradation was restrained because superfluous PMS dosage could produce excess reactive oxygen species (ROS), causing the self-quenching effect of PMS, 47 as illustrated in the equation below.…”

Application of CoMn/CoFe layered double hydroxide based on metal–organic frameworks template to activate peroxymonosulfate for 2,4-dichlorophenol degradation

“…Based on the above research results, a possible reaction mechanism for the catalytic activation of PMS by MOFs-derived LDH was proposed. The activation of PMS was mainly completed by the non-radical ( 1 O 2 ) pathway and the free radical (SO †À 4 ) pathway (Geng et al 2021). For CoFe-LDH system, PMS reacted with Co 2þ to generate sulfate radicals (SO †À 4 ) and hydroxyl radicals ( † HO), accompanied by one electron loss of Co 2þ to form Co 3þ (Equation ( 5)).…”

Enhanced activation of persulfate improves the selective oxidation of alcohols catalyzed by earth-abundant metal oxides embedded on porous N-doped carbon derived from chitosan

“…Biomass-based carbon has been explored as a catalyst support or as a catalyst (metal-free catalysis) for water purification via advanced oxidation processes of organic contaminants. 25–27…”

“…Biomass-based carbon has been explored as a catalyst support or as a catalyst (metal-free catalysis) for water purification via advanced oxidation processes of organic contaminants. [25][26][27] Recently, selective oxidation of aromatic alcohols via PMS or PDS activation was reported under metal-free conditions using doped carbons. [28][29][30] However, the metal-free carbon-mediated persulfate activation is commonly less efficient than with metal-containing catalysts.…”