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

Abstract

Photo-Fenton system is considered an economical and environmentally-friendly way to remove organic pollutants in the aquatic environment. However, slow electron transfer and retarded Fe2+/Fe3+ circulation hampered photo-Fenton practical applications. Herein,...

Molybdenum Disulfide (MoS2): An Emerging Multifunctional Nanomaterial for Sensing and Removal of Agricultural Contaminants

“…Similar to the piezo-phototronics, photo-Fenton (PF)-like catalysis was also widely investigated for the enhancement of agroenvironment remediation efficiency . Until now, various MoS 2 -based composites (MoS 2 /BiVO 4 , SrCoO 3 /MnFe 2 O 4 /MoS 2 , Pt-MSCs@MoS 2 , MoS 2 /Bi 2 S 3 /BiVO 4 , etc.)…”

“…In this regard, MoS 2 -based electrochemical sensors (MoS 2 –RuS 2 nanomaterial) were developed via one-pot hydrothermal technique for the detection of SDZ in milk by Sakthivel et al, reaching a LOD of 2.333 μA μM –1 cm –2 and a wide range from 0.01 μM to 598.7 μM. Beyond that, MoS 2 -based sensors can be employed to detect various antibiotics, such as kanamycin, chloramphenicol, nitrofurantoin, sulfamerazine, etc.…”

External oxidant-free remediation of antibiotics: Activation of oxygen molecules to generate hydroxyl radicals using Co-Fe3S4 nanoflowers

“…As one of the most promising techniques, advanced oxidation processes have been extensively applied for the remediation of various contaminants (e.g., antibiotics [8][9][10][11], phenol [12,13], pesticides [14,15], etc.). Typically, external addition of oxidants (e.g., H 2 O 2 [16][17][18], ozone [19,20], persulfate [21][22][23]) is required to generate reactive oxygen species (ROS) to degrade pollutants. Unlike the engineered systems (e.g., wastewater treatment plant), the external addition of oxidants to natural water bodies would consume a relatively large amount of chemicals [24], which may further pose ecotoxicological risks such as the formation of disinfection byproducts [25,26].…”

“…Guided by theoretical calculation, a Co-Fe 3 S 4 catalyst was synthesized and evaluated for antibiotic degradation via the activation of dissolved O 2 . The underlying mechanisms of O 2 conversion were revealed by conducting 18 O isotopic labeling remediations. Furthermore, the O 2 activation performance by Co-Fe 3 S 4 was evaluated under various environmental conditions.…”

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. − …”