Evolution of singlet oxygen in peroxymonosulfate activation: a review

Abstract

Given the sulfate radical-based advanced oxidation processes (SR-AOPs) gaining plentiful attention in recent years, PMS activation has been reckoned as an alternative method to Fenton process in environmental remediation. Hence,...

Facile sol–gel fabrication of Cu/N–P-doped C nanocatalysts for peroxymonosulfate activation towards advanced oxidation of 4-nitrophenol

“…Different from other catalytic systems, the reactive species in activating of PMS may be ˙SO 4 − , ˙OH or 1 O 2 ; 38 therefore, the main reactive species should be identified in this oxidation reaction of 4-NP. In order to test the reactive species involved in the Cu/N–P–C + PMS system, radical quenching experiments and EPR measurements were performed (Fig.…”

Activation of Molecular Oxygen and Peroxodisulfate for Removal of Water‐Soluble Antibiotics Using Metal‐Organic Framework‐Derived CoNx@NC Catalyst

“…The catalyst CoN x @NC activated O 2 (water‐soluble) producing ROS and decomposed organic contaminants. The N‐doping introduced a positive charge on the adjacent carbon and improved its binding ability with molecular oxygen [40,41] . The presence of pyridinic‐N and mesopores in NC favored the activation of O 2 [20] .…”

“…The N-doping introduced a positive charge on the adjacent carbon and improved its binding ability with molecular oxygen. [40,41] The presence of pyridinic-N and mesopores in NC favored the activation of O 2 . [20] First, we investigated the degradation of water-soluble dye methylene blue using CoN x @NC.…”

Systemically Understanding Aqueous Photocatalytic Upgrading of Microplastic to Fuels

“…[25] As a result, photoinitiated oxidative reactions predominantly occur at unsaturated sites (C=C), external impurities, or structural abnormalities. [23,26] However, in photocatalysis, radicals like •OH, O 2 À , and singlet oxygen can be generated [10,27] and serve as the initiator for breaking down long-chain polymers into short-chain molecules. [28] The shortchain products with better solubility and wettability can then participate in the interfacial oxidation process with holes and free radicals.…”