Reinventing MoS2 Co-catalytic Fenton reaction: Oxygen-incorporation mediating surface superoxide radical generation

Emerging investigator series: hetero-phase junction 1T/2H-MoS2 nanosheets decorated by FeOOH nanoparticles for enhanced visible light photo-Fenton degradation of antibiotics

“…MoS 2 has been applied as a co-catalyst to enhance the Fenton-like reaction efficiency, owing to accelerated Fe 2+ /Fe 3+ and increased generation of ROS. 1,31 Likewise, 1T/2H-MoS 2 @FeOOH and 2H-MoS 2 @FeOOH showed improved degradation efficiencies 12.75 and 8.75 times that of FeOOH alone, respectively (Fig. 3A).…”

“…S5 †). 1 Furthermore, since the Mo d orbitals of 1T-MoS 2 include three degenerate orbitals (d xy , d yz , d xz ) with incomplete occupation, 1T-MoS 2 shows a metallic ground state while 2H MoS 2 shows a semiconductive ground state (Fig. S6 †).…”

“…As a traditional and effective advanced oxidation process (AOP), the Fenton reaction has been widely employed in domestic and industrial wastewater treatment. 1,2 However, the Fenton process suffers from high H 2 O 2 consumption and a slow Fe 2+ /Fe 3+ cycling rate, 3 which can lead to the remarkable accumulation of iron sludge. 4 Thus, researchers have devoted much effort to enhancing the cycling rate of Fe 2+ /Fe 3+ as well as the utilization efficiency of H 2 O 2 .…”

Piezoelectric-Induced Internal Electric Field in Bi2WO6 Nanoplates for Boosting the Photocatalytic Degradation of Organic Pollutants

“…Advanced oxidation processes (AOPs) are considered as the most promising approach to remove the persistent organic pollutants via generating sufficient reactive oxygen species (ROS). , Recently, more and more attention has been redirected to photocatalysis, a typical AOP, owing to the nature of low energy consumption and environmental-friendliness. − Driven by light, the excited charge carriers would transfer to the photocatalyst surface and generate ROS to effectively degrade organic pollutants. − …”

FeOOH-activating resorcinol–formaldehyde resin nanospheres for the photo-Fenton degradation of organic pollutants

“…[1][2][3][4][5] In principle, the Fenton reaction relies mainly on the Fe 2+ /H 2 O 2 system to produce highly active radicals (such as OH, E 0 = 2.80 V vs. RHE; and O 2 À , E 0 = 2.40 V vs. RHE). 6,7 Significantly, the traditional homogeneous Fenton reaction has several shortcomings, such as a limited pH activity range, the formation of iron species in sludge residue, and needing the continuous addition of H 2 O 2 . As a result, the traditional homogeneous Fenton process is not economical and environmentally friendly enough for treatment of organic pollutants.…”