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Papers
20 resultsShowing papers similar to Epsilon-MnO2 simply prepared by redox precipitation as an efficient catalyst for ciprofloxacin degradation by activating peroxymonosulfate
ClearPeroxymonosulfate Activation by Facile Fabrication of α-MnO2 for Rhodamine B Degradation: Reaction Kinetics and Mechanism
This is a water chemistry study demonstrating that manganese dioxide nanowires can efficiently break down the dye Rhodamine B in water using an advanced oxidation process; it is not a microplastics research paper.
Z-Type Heterojunction MnO2@g-C3N4 Photocatalyst-Activated Peroxymonosulfate for the Removal of Tetracycline Hydrochloride in Water
Researchers developed an advanced photocatalyst that degrades nearly 97% of tetracycline, a common antibiotic pollutant, in water within 180 minutes using light-activated chemical reactions. The system showed good stability for reuse and reduced the toxicity of breakdown products. While focused on antibiotic removal rather than microplastics, this water treatment technology is relevant because microplastics often carry adsorbed antibiotics, and removing both contaminants is important for safe drinking water.
The Photocatalytic Degradation of Enrofloxacin Using an Ecofriendly Natural Iron Mineral: The Relationship Between the Degradation Routes, Generated Byproducts, and Antimicrobial Activity of Treated Solutions
This paper is not relevant to microplastics research; it investigates the photocatalytic degradation of the antibiotic enrofloxacin in water using a natural iron mineral, focusing on pharmaceutical contamination rather than plastic particles.
Modi-Red Mud Loaded CoCatalyst Activated Persulfate Degradation of Ofloxacin
Researchers developed a cobalt-loaded red mud catalyst (Co-RM) for persulfate activation and investigated its degradation of the antibiotic ofloxacin, achieving 80.06% removal under optimized conditions of pH 3.0 and 40°C. Sulfate radicals were identified as the primary reactive species, and GC-MS analysis revealed the degradation intermediates and proposed pathway.
Efficient tetracycline hydrochloride degradation via peroxymonosulfate activation by N doped coagulated sludge based biochar: Insights on the nonradical pathway
Researchers found a way to repurpose waste sludge from microplastic removal processes by converting it into a nitrogen-doped carbon material that can break down the antibiotic tetracycline in water. The recycled material performed well across a wide pH range and worked primarily through a nonradical pathway to degrade the antibiotic. The study offers a dual benefit approach that addresses both microplastic waste management and antibiotic contamination in water systems.
Removal of Ciprofloxacin from Wastewater by Ultrasound/Electric Field/Sodium Persulfate (US/E/PS)
Researchers developed an ultrasound-enhanced electro-activated persulfate system for removing the antibiotic ciprofloxacin from wastewater, achieving effective degradation through combined oxidation processes involving sulfate and hydroxyl radicals.
Peroxymonosulfate activation by microplastics coagulated sludge-derived iron-carbon composite for effective degradation of tetracycline hydrochloride: Performance and mechanism
This study used a one-step pyrolysis method to convert microplastic-containing coagulated sewage sludge into an iron-carbon composite, which was then used to activate peroxymonosulfate for degrading tetracycline hydrochloride. The approach simultaneously addressed microplastic waste disposal and antibiotic contamination removal.
Effect of microplastics on tertiary/quaternary treatment of urban wastewater: Fe-biochar/peroxymonosulfate/sunlight vs solar photo-Fenton
Researchers evaluated how microplastics present in secondary-treated urban wastewater affect the degradation of four pharmaceutical micropollutants and the inactivation of antibiotic-resistant E. coli using two advanced oxidation processes. Microplastics were found to influence the performance of both iron-modified biochar/peroxymonosulfate and solar photo-Fenton treatments.
Norfloxacin removal by ultraviolet-activated sodium percarbonate and sodium hypochlorite: process optimization and anion effect
This paper is not about microplastics; it evaluates UV-activated chemical processes for removing the antibiotic norfloxacin from water.
Insight into the Structure–Activity Relationship of Delafossite Catalysts for Enhanced Peroxymonosulfate Activation and Pollutant Degradation
Researchers synthesized delafossite-type CuFeO2 and CuMnO2 catalysts via a one-step hydrothermal method and evaluated their peroxymonosulfate activation performance for degrading ofloxacin and methylene blue, finding that Mn substitution at the B-site significantly enhanced catalytic activity through distinct redox mechanisms.
Removal of norfloxacin by combining persulfate with nano zero-valent iron modified by activated carbon and copper nanocomposite
A nano zero-valent iron composite modified with activated carbon and copper was developed to activate persulfate for degrading the antibiotic norfloxacin from water, achieving high removal efficiency under optimized conditions.
Cobalt-Immobilized Microplastics as a Functional Catalyst for PMS-Based Nitrate Degradation: Optimization Using Response Surface Methodology
Researchers developed a cobalt-immobilized microplastic catalyst that activates peroxymonosulfate to degrade nitrate contamination in water, using response surface methodology to optimize performance and identifying catalyst dosage and cobalt concentration as the most influential variables.
Synthesis of invasive plant biochar catalyst with carbon nitride structure for peroxymonosulfate activation toward efficient ciprofloxacin degradation
Researchers created a new material from an invasive plant that, when combined with cobalt, could break down the common antibiotic ciprofloxacin in water within just 10 minutes with 98% efficiency across four reuse cycles. This "treat waste with waste" approach offers a promising low-cost tool for removing pharmaceutical pollutants from water supplies.
Process analysis of microplastic degradation using activated PMS and Fenton reagents
Researchers demonstrated that activated peroxymonosulfate and Fenton reagents can degrade nylon and polystyrene microplastics through free radical oxidation, achieving mass losses exceeding 20% after four treatment cycles.
Mechanism of norfloxacin transformation by horseradish peroxidase and various redox mediated by humic acid and microplastics
Researchers explored how the enzyme horseradish peroxidase combined with natural redox mediators can transform the antibiotic norfloxacin in water, with microplastics and humic acid affecting the process. Certain plant-derived compounds enhanced antibiotic breakdown while microplastics slightly inhibited the reaction. This has implications for removing pharmaceutical pollutants from wastewater.
Impact of microplastics on 4-chlorophenol degradation via MnOOH-catalyzed periodate activation
Researchers found that microplastics interfere with the MnOOH-catalyzed periodate oxidation process used to degrade the toxic phenolic compound 4-chlorophenol in water, with MP surfaces adsorbing both the catalyst and contaminant in ways that reduce treatment efficiency.
Reviewing Perovskite Oxide-Based Materials for the Effective Treatment of Antibiotic-Polluted Environments: Challenges, Trends, and New Insights
This review covers perovskite oxide materials as catalysts for breaking down antibiotic pollution in water through advanced photocatalysis. While focused on antibiotic removal rather than microplastics directly, the technology is relevant because microplastics in water can carry antibiotics and antibiotic-resistant bacteria. Better water treatment methods that address multiple contaminants could help reduce overall human exposure to both antibiotics and microplastics.
Pair‐Resolved Fe–M Dual‐Atom Catalysts for Programmed PMS Activation: Mechanisms, Membrane Confinement, and Standardized Benchmarks
This review examined iron-based dual-atom catalysts (Fe-M DACs) for peroxymonosulfate (PMS) activation, a system relevant to advanced oxidation of water contaminants including microplastics. The authors provide a pair-resolved analysis of how metal pairings determine reaction pathways and treatment selectivity.
Emerging PMS-Based LMO–COF Membrane with Improved Stability for the Mineralization of Micropollutants and Rejection of Nanoplastics from Wastewater
Researchers developed a novel layered metal oxide-covalent organic framework (LMO-COF) membrane integrated with peroxymonosulfate oxidation to simultaneously remove pharmaceutical micropollutants and nanoplastics from wastewater, achieving improved stability and mineralization performance.
Carbonized Waste Cation Exchange Resinwith Fe Doping for Persulfate Activationand Oxytetracycline Degradation:Performance and Mechanism
Researchers prepared a carbonized spent cation exchange resin doped with Fe3O4 (Fe3O4@CR) to activate persulfate for degrading the antibiotic oxytetracycline, achieving 76.4% removal under optimized conditions and identifying hydroxyl radicals and sulfate radicals as the primary reactive species responsible for degradation.