Strategies based on electron donors to accelerate Fe(III)/Fe(II) cycle in Fenton or Fenton-like processes

Iron oxide-EDTA nanoparticles for chelation-enhanced chemodynamic therapy and ion interference therapy

“…This is attributed to the chelate complex of Fe 3+ /Fe 2+ with EDTA reducing the redox potential of Fe 3+ /Fe 2+ from 0.77 V to 0.209 V ( vs. NHE), which enhanced the thermodynamic driving force of the Fenton reaction and demonstrated that the reduction of Fe 3+ /Fe 2+ -EDTA might be realized through O 2 ˙ − rather than H 2 O 2 . 12,31,32 It is worth mentioning that AIO-EDTA showed higher Fenton reaction performance than the mixed group of AIO and EDTA, which may be attributed to the dissolution of more iron ions from AIO-EDTA NPs. Furthermore, 3,3′,5,5′-tetramethylbenzidine (TMB)-H 2 O 2 colorimetric experimental results also show almost no color change with AIO, whereas the color turned dark blue with AIO-EDTA, illustrating that EDTA enhanced the Fenton reaction activity of AIO (Fig.…”

“…•− rather than H 2 O 2 . 12,31,32 It is worth mentioning that AIO-EDTA showed higher Fenton reaction performance than the mixed group of AIO and EDTA, which may be attributed to the dissolution of more iron ions from AIO-EDTA NPs. Furthermore, 3,3′,5,5′-tetramethylbenzidine (TMB)-H 2 O 2 colorimetric experimental results also show almost no color change with AIO, whereas the color turned dark blue with AIO-EDTA, illustrating that EDTA enhanced the Fenton reaction activity of AIO (Fig.…”

Catechol‐Isolated Atomically Dispersed Nanocatalysts for Self‐Motivated Cocatalytic Tumor Therapy

“…Hence, the instantaneous reduction of Fe III to Fe II could effectively accelerate the kinetics of the Fenton reaction. [20] MoS 2 , WS 2 , and ZnS promote the reduction of Fe III to Fe II during Fenton reactions. [21] MoS 2 as a cocatalyst may improve the rates of H 2 O 2 decomposition and * OH formation, leading to an 18.5 times higher oxidation rate compared with the control group.…”

Construction of a Visible-Light-Response Photocatalysis–Self-Fenton Degradation System of Coupling Industrial Waste Red Mud to Resorcinol–Formaldehyde Resin

“…In order to solve the pollution problem of antibiotic wastewater, biological treatment, chemical oxidation, and physical adsorption methods are proposed, but they suffer from high energy consumption, high cost, complex operation, or secondary pollution [4][5][6][7]. Recently, as advanced oxidation processes (AOPs), the rapid expansion of Fe in a 2+ oxidation state (Fe 2+ ) and the hydroxyl radical ( • OH)-based Fenton oxidation method, since • OH expresses high redox potential (+2.80 V vs. SHE), for organic matter decomposition [8][9][10] have been broadly applied in antibiotic wastewater treatment. Unfortunately, the conventional homogeneous Fenton method suffers from poor tolerance of pH, high difficulty in separating iron species from water and weak Fe 2+ regeneration [11].…”