Chemical Science, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 9, 2024
A highly efficient copper-based photocatalytic system is developed for aerobic depolymerization of polystyrene waste, achieving benzoic acid in up to 65% total yield through an integrated one-pot two-step procedure.
Language: Английский
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 6, 2024
The selective upcycling of polyolefins to create products increased value has emerged as an innovative approach carbon resource stewardship, drawing significant scientific and industrial interest. Although recent advancements in recycling technology have facilitated the direct conversion hydrocarbons or oxygenated compounds, synthesis nitrogenated compounds from such waste not yet been disclosed. Herein, we demonstrate a novel for by efficiently transforming range postconsumer plastic into nitriles amides. This process leverages catalytic properties manganese dioxide combination with inexpensive nitrogen source, urea, make it both practical economically viable. Our only opens new avenues creation chemicals polyolefin but also underscores critical importance valorizing resources originally derived fossil fuels. study provides strategy sustainable polyolefins.
Language: Английский
Citations
13
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 2, 2025
Abstract Plastic products bring convenience to various aspects of the daily lives due their lightweight, durability and versatility, but massive accumulation post‐consumer plastic waste is posing significant environmental challenges. Catalytic methods can effectively convert into value‐added feedstocks, with catalysts playing an important role in regulating yield selectivity products. This review explores latest advancements advanced applied thermal catalysis, microwave‐assisted photocatalysis, electrocatalysis, enzymatic catalysis reaction systems for chemical recycling valuable feedstocks. Specifically, pathways mechanisms involved plastics process are analyzed presented, strengths weaknesses employed across different described. In addition, structure‐function relationship these discussed. Herein, it provided insights design novel outline challenges future opportunities terms developing tackle “white pollution” crisis.
Language: Английский
Citations
1
Environmental Science Nano, Journal Year: 2024, Volume and Issue: 11(4), P. 1394 - 1411
Published: Jan. 1, 2024
Carbon nanofibers are a class of lightweight, high-performance composite materials.
Language: Английский
Citations
5
Nano-Structures & Nano-Objects, Journal Year: 2024, Volume and Issue: 38, P. 101149 - 101149
Published: April 18, 2024
Language: Английский
Citations
5
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: June 4, 2024
Abstract This study examines the presence of bisphenol A (BPA), S (BPS), F (BPF), and M (BPM) in various recycled plastics readily available on market (LDPE, HDPE, PET, PP), light European Food Safety Authority (EFSA) limits. Twenty samples different origin are analyzed, cleaning treatments applied, migration potential these bisphenols into food is studied. BPM absent all samples, but a post-consumer LDPE sample reveals high concentrations, raising concerns, reaching 8540 ng/g, 370 29 ng/g BPA, BPS, BPF, respectively. Migration tests show substantial contaminants simulants. Using treatment with polyethylene glycol (PEG 400) reduces BPA LDPE, PP, PET by 95%, 99%, 97% 28%, respectively, highlighting importance across polymers plastic recycling. These findings not only protect safety addressing environmental challenges associated
Language: Английский
Citations
5
The Innovation Materials, Journal Year: 2024, Volume and Issue: unknown, P. 100090 - 100090
Published: Jan. 1, 2024
<p>Anthropogenic climate and environmental changes increasingly threaten the sustainability of life on Earth, hindering sustainable development human societies. These detrimental ecological are driven by activities that have elevated atmospheric levels greenhouse gases toxic substances, increased inorganic organic pollutants in water bodies, led to accumulation solid waste soils. Over next two three decades, impacts change, pollution, soil contamination expected intensify, posing increasing risks health global stability. Considering these trends, it is essential implement robust mitigation adaptation strategies. This paper analyzes pollution problems from perspectives atmospheric, water, contamination. It summarizes current research heterogeneous catalysis for treating gaseous, liquid, phases, with an emphasis key challenges applying catalytic conversion technologies cost-effective industrial settings. Finally, strategies mitigating via discussed material flow, energy data flow. aims offer scientific insights enhance future practice remediation.</p>
Language: Английский
Citations
5
Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 17, 2024
The extensive accumulation of plastic waste has given rise to severe environmental pollution issues. Contemporary conventional recycling methods, such as incineration and landfilling, contribute significantly pollutant emissions carbon footprints, against the principles sustainable development. Leveraging renewable solar energy transform plastics into high-value chemicals green fuels offers a more promising approach managing resources. This comprehensive review centers on recent advancements in photoreforming, categorizing them based types end products. Particular emphasis is placed evolving research landscape surrounding conversion through well economic considerations for large-scale photoreforming production. analysis conducted here reveals key pathways emerging trends that are poised shape trajectory enhanced photoconversion, ultimately influencing realization carbon-neutral future.
Language: Английский
Citations
4
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: March 21, 2025
Abstract Upcycling waste plastics into liquid fuels presents significant potential for advancing the circular economy but is hindered by poor selectivity and low-value methane byproduct formation. In this work, we report that atomic Ru-doped ZrO 2 can selectively convert 100 grams of post-consumer polyethylene polypropylene, yielding 85 mL in a solvent-free hydrocracking. The (C 5 -C 20 ) comprises ~70% jet-fuel-ranged branched hydrocarbons 8 16 ), while gas product liquefied-petroleum-gas 3 6 without ethane. We found Ru dopant Ru-O-Zr moiety functionalizes its neighboring O atom, originally inert, to create Brønsted acid site. This site, rather than itself, governs internal C−C bond cleavage polyolefins through carbonium ion mechanism, thereby enhancing yield suppressing oxide modulation strategy provides paradigm shift catalyst design hydrocracking holds broad spectrum applications.
Language: Английский
Citations
0
Catalysts, Journal Year: 2025, Volume and Issue: 15(4), P. 335 - 335
Published: March 31, 2025
Chemical recycling of plastic waste, especially polyolefins, into valuable liquid fuels is considerable significance to address the serious issues raised by their threat on environmental and human health. Nevertheless, construction efficient economically viable catalytic systems remains a significant hurdle. Herein, we developed an bifunctional catalyst system comprising γ-Al2O3-supported ruthenium nanoparticles (Ru/γ-Al2O3) β-zeolite for conversion polyolefins gasoline-range hydrocarbons. A yield C5–12 paraffins up 73.4% can be obtained with polyethene as reactant at 250 °C in hydrogen. The Ru sites primarily activate initial cleavage C–H bonds polymer towards formation olefin intermediates, which subsequently go through further cracking isomerization over acid β-zeolite. Employing situ infrared spectroscopy probe–molecule model reactions, our investigation reveals that optimized proportion spatial distribution dual are pivotal tandem process. This optimization synergistically regulates kinetics accelerates intermediate transfer, thereby minimizing production side C1–4 hydrocarbons resulting from over-cracking enhancing fuels. research contributes novel insights design chemical upgrading chemicals, advancing field waste sustainable production.
Language: Английский
Citations
0
Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125359 - 125359
Published: April 1, 2025
Language: Английский
Citations
0