Boosting heterogeneous Fenton reactions for degrading organic dyes via the photothermal effect under neutral conditions

Abstract

Although heterogeneous Fenton reaction has demonstrated great promise in the remediation of refractory organic pollutants, its widespread application is still limited by the insufficient degradation performance under neutral conditions. Here,...

OER highly active encapsulants to improve the electrochemical anticorrosion of Fe–N–C for ultralong-lifespan and high-rate rechargeable zinc–air batteries

“…Finally, to probe whether H 2 O 2 is decomposed via Fenton and Fenton-like reactions, the fluorescence method is introduced here, wherein terephthalic acid (PTA) is used to capture ˙OH radicals to form 2-hydroxy terephthalic acid (a fluorescent material with a strong emission at ∼425 nm). 78 Commonly, at around room temperature (30 °C is applied here), ˙OH radicals cannot be formed from water without H 2 O 2 . As revealed in Fig.…”

Mussel-Inspired Catechol-Grafted Quaternized Chitosan Flocculant for Efficiently Treating Suspended Particles and Refractory Soluble Organic Pollutants

“…With the development of technology and the large demand for textiles and printing, the industrial discharge is gradually increasing. − These industrial wastewaters are highly variable and complex, which can contain suspended particles and refractory organic substances such as dyes. − The complexity and variability of these wastewaters makes most commonly adopted single-step technologies fail to meet stringent waster regulations. − To achieve complete removal of these pollutants, wastewater treatment facilities have to adopt a series of complicated processes that combine different technologies of adsorption, − oxidation, , disinfection, and filtration. − Therefore, given the rapidly expanding inventory of industrial wastewaters and increasing demands for high treatment efficiency for these complex wastewaters, it is urgent to find a viable and simple strategy to realize complete remediation of these pollutants from wastewater through a single-step treatment.…”

Porous polydopamine nanospheres with yolk shell-like structure to effectively remove methylene blue, bisphenol A, and tetracycline from wastewaters

“…19,20 Being rich in functional groups, such as catechol, amine, and aromatic groups, PDA is considered a potential biological adsorbent, [21][22][23] which can provide a large number of active sites for the adsorption of heavy metal ions and toxic organic pollutants through chelation and p-p stacking interaction. 24,25 Xu et al synthesized PDA microspheres for the removal of methylene blue. 26 However, PDA tends to form a dense polymeric structure with an unsatisfactory specific surface area because of the spontaneous oxidative polymerization of dopamine under mild conditions, which greatly restricts its adsorptive properties and undermines the confidence of the industry in its utilization.…”