Nano Letters, Journal Year: 2024, Volume and Issue: 24(44), P. 14082 - 14090
Published: Oct. 22, 2024
Plastic waste poses a profound threat to ecosystems and human health, necessitating novel strategies for effective degradation in nature. Here, we present approach utilizing upconversion phosphors as additives significantly accelerate plastic photodegradation nature via enhancing ultraviolet (UV) radiation. Pr-doped Li
Language: Английский
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Oct. 10, 2024
Abstract Microplastic pollution, an emerging environmental issue, poses significant threats to aquatic ecosystems and human health. In tackling microplastic pollution advancing green hydrogen production, this study reveals a tandem catalytic degradation-hydrogen evolution reaction (MPD-HER) process using hierarchical porous carbon nitride-supported single-atom iron catalysts (FeSA-hCN). Through hydrothermal-assisted Fenton-like reactions, we accomplish near-total ultrahigh-molecular-weight-polyethylene degradation into C 3 -C 20 organics with 64% selectivity of carboxylic acid under neutral pH, leap beyond current capabilities in efficiency, selectivity, eco-friendliness, stability over six cycles. The system demonstrates versatility by degrading various daily-use plastics across different settings. mixture FeSA-hCN plastic products further achieves 42 μmol h ‒1 illumination, outperforming most existing photoreforming methods. This MPD-HER not only provides scalable economically feasible strategy combat but also contributes the economy, far-reaching implications for global sustainability initiatives.
Language: Английский
Citations
16
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 10, 2025
Abstract Conventional suspension photocatalysts face stability and efficiency challenges in harsh, unconditioned environments characterized by high alkalinity, salinity, organic species seawater wastewater. Moreover, suspension‐based photothermal‐assisted catalysis presents further challenges, particularly concerning formation of heterojunctions between photothermal materials that disrupt charge‐transfer pathways are exacerbated heating‐induced carrier recombination. Here, a photocatalytic system is proposed which three key photoprocesses: photothermal, photogeneration‐charge separation, photoredox spatially decoupled yet coordinated, aimed at addressing prevalent adsorption‐mediated catalyst deactivation harsh environments. Essentially, the polymeric tandem catalytic (PTPC) film consists TiO 2 /Au CuS layers, separated encapsulated serve as spacer inhibitors to conflicting photochemical‐photothermal corrosion‐resistant redox medium. The PTPC exhibits enhanced light absorption, mass transfer, effect, surpassing traditional catalysts enabling interfacial reactions on passive surface. represents new paradigm photocatalysis, unimpeded photoredox‐photothermal for application hostile plastic waste Such can be used develop localized, onsite solutions H production minimize logistical environmental challenges.
Language: Английский
Citations
3
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 24, 2025
Abstract The oxidative degradation of plastics in conjunction with the production clean hydrogen (H 2 ) represents a significant challenge. Herein, Ni 3 S 4 /ZnCdS heterojunction is rationally synthesized and employed for efficient H high‐selectivity value‐added chemicals from waste plastic. By integrating spectroscopic analysis techniques density functional theory (DFT) calculations, solely electron transfer‐mediated reaction mechanism confirmed, wherein extracts electrons ZnCdS (ZCS) to promote spatial segregation photogenerated holes, which not only facilitates but also maintains high oxidation potential holes on ZCS surface, favoring hole‐dominated plastic oxidation. Notably, catalyst exhibited rates as 27.9 17.4 mmol g −1 h , along selectivity 94.2% 78.3% liquid product toward pyruvate acetate polylactic acid (PLA) polyethylene terephthalate (PET), respectively. Additionally, carbon yields 26.5% 2.2% are measured after 9 photoreforming, representing highest values reported date. Overall, this research presents promising approach converting into fuel valuable chemical products, offering solution growing issue “ White Pollution ”.
Language: Английский
Citations
2
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(37)
Published: June 17, 2024
Abstract The photocatalytic conversion of biomass and plastic waste provides opportunities for sustainable fuel chemical production. Heterogeneous photocatalysts, typically composed semiconductors with distinctive redox properties in their conduction band (CB) valence (VB), facilitate both the oxidative reductive valorization organic feedstocks. This article a comprehensive overview recent advancements photorefinery plastics from perspective photocatalysts. We explore roles VB CB enhancing value‐added via various pathways. Our aim is to bridge gap between mechanisms renewable carbon feedstock valorization, inspiring further development refinery plastics.
Language: Английский
Citations
14
Chemosphere, Journal Year: 2024, Volume and Issue: 361, P. 142380 - 142380
Published: May 18, 2024
Due to weather and working/operational conditions, plastic degradation produces toxic non-biodegradable nano microplastics (N/M-Ps, ranging from 10 nm 5 mm), over time these N/M-Ps have integrated with the human cycle through ingestion inhalation. These N/M-Ps, as serious emerging pollutants, are causing considerable adverse health issues due up-taken by cells, tissue, organs, including brain. It has been proven that can cross blood-brain barrier (via olfactory blood vessels) affect secretion of neuroinflammatory (cytokine chemokine), transporters, receptor markers. Neurotoxicity, neuroinflammation, brain injury, which may result in such scenarios a concern cause disorders. However, related pathways pathogenesis not well-explored but focus upcoming research. Therefore, this editorial, well-organized multidisciplinary research is required explore associated pathogenesis, leading mapping nano-enabled therapeutics acute chronic N/M-P exposure.
Language: Английский
Citations
12
Electron, Journal Year: 2024, Volume and Issue: 2(3)
Published: Aug. 1, 2024
Abstract The escalating accumulation of plastic waste has been developed into a formidable global environmental challenge. Traditional disposal methods such as landfilling and incineration not only exacerbate degradation by releasing harmful chemicals greenhouse gases, but also squander finite resources that could otherwise be recycled or repurposed. Upcycling is kind recycling technology converts high‐value helps to avoid resource pollution. Electrocatalytic upcycling emerges novel distinguished its mild operational conditions, high transformation efficiency product selectivity. This review commences with an overview the employed in management respective advantages inherent limitations are delineated. different types upcycled electrocatalytic strategy then discussed process examined together mechanisms underlying upcycling. Furthermore, structure‐activity relationships between electrocatalysts performance elucidated. aims furnish readers comprehensive understanding techniques for provide guidance design towards efficient transformation.
Language: Английский
Citations
12
Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(20), P. 11348 - 11434
Published: Oct. 9, 2024
Environmental catalysis has emerged as a scientific frontier in mitigating water pollution and advancing circular chemistry reaction microenvironment significantly influences the catalytic performance efficiency. This review delves into engineering within liquid-phase environmental catalysis, categorizing microenvironments four scales: atom/molecule-level modulation, nano/microscale-confined structures, interface surface regulation, external field effects. Each category is analyzed for its unique characteristics merits, emphasizing potential to enhance efficiency selectivity. Following this overview, we introduced recent advancements advanced material system design promote (e.g., purification, transformation value-added products, green synthesis), leveraging state-of-the-art technologies. These discussions showcase was applied different reactions fine-tune regimes improve from both thermodynamics kinetics perspectives. Lastly, discussed challenges future directions engineering. underscores of intelligent materials drive development more effective sustainable solutions decontamination.
Language: Английский
Citations
11
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: July 27, 2024
Abstract Semihydrogenation is a crucial industrial process. Noble metals such as Pd have been extensively studied in semihydrogenation reactions, owing to their unique catalytic activity toward hydrogen activation. However, the overhydrogenation of alkenes alkanes often happens due rather strong adsorption on active phases. Herein, we demonstrate that incorporation phases single‐atom sites perovskite lattices SrTiO 3 can greatly alternate electronic structure and coordination environment facilitate desorption than further hydrogenation. Furthermore, incorporated be well stabilized without sintering by host–guest interaction with during activation H species hydrogenation reactions. As result, (Pd‐SrTiO ) exhibits an excellent time‐independent selectivity (>99.9 %) robust durability for photocatalytic phenylacetylene styrene. This strategy based will broad implications development high‐performance photocatalysts selective
Language: Английский
Citations
9
Nano Research, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 9, 2024
Language: Английский
Citations
9
Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 29, 2025
Photocatalytic upcycling of waste polyolefins into value-added chemicals provides promise in plastic management and resource utilization. Previous works demonstrate that can be converted carboxylic acids, with CO2 as the final oxidation product. It is still challenging to explore more transformation products, particularly mild-oxidation products such alcohols, because their instability compared polymer substrates, which are prone during catalytic reactions. In this work, we propose an efficient strategy regulate product type through precise control radicals, intermediates, reaction paths. Taking commonly used photocatalyst C3N4 example, its major acids CO2. When MoS2 introduced construct a Z-scheme heterostructure, gas significantly reduced alcohols appear high yield 1358.8 μmol gcat-1 selectivity up 80.3%. This primarily attributed presence •OH radicals from oxygen reduction, acting key role alcohol formation while simultaneously suppressing competing pathways •O2- 1O2, thus reducing overoxidation products. The β-scission C-C bonds chains generates intermediate alkyl species, followed by combination produce methanol, energetically favorable for MoS2/C3N4. contrast, species couple form formic acid, C3N4. work new approaches controlling types offers insights involved polyolefin photorefinery.
Language: Английский
Citations
1