Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152727 - 152727
Опубликована: Июнь 1, 2024
Язык: Английский
Nature Reviews Methods Primers, Год журнала: 2022, Номер 2(1)
Опубликована: Июнь 16, 2022
Язык: Английский
Процитировано
190
Advanced Energy Materials, Год журнала: 2022, Номер 12(22)
Опубликована: Апрель 21, 2022
Abstract Plastic waste remains a global challenge due to the massive amounts being produced without satisfactory treatment technologies for recycling and upcycling. Photocatalytic processes are emerging as green promising approaches upcycle plastics into value‐added products under mild conditions using sunlight energy source. In this review, recent advances in plastic conversion through photocatalysis have been comprehensively summarized. Special emphasis is placed on photocatalytic mechanism selective CC CH bond transformations of access fuels, chemicals, materials. Finally, challenges perspectives establishing new paradigm toward sustainable circular economy also put forward.
Язык: Английский
Процитировано
166
Chemical Engineering Journal, Год журнала: 2022, Номер 451, С. 138534 - 138534
Опубликована: Авг. 6, 2022
Язык: Английский
Процитировано
161
ACS Materials Letters, Год журнала: 2021, Номер 3(12), С. 1660 - 1676
Опубликована: Окт. 29, 2021
Nonbiodegradable plastics with inert and saturated C–C backbones comprise the majority of global annual produced, including ubiquitous polyolefins (polyethylene polypropylene) polystyrene. Unlike polymers cleavable bonds, such as polyesters, polyurethanes, polycarbonates, these are most challenging to upcycle cannot be easily broken down by chemical or enzymatic means. Thus, they mostly end up in landfills incinerated produce copious amounts greenhouse emissions. In recent years, increased research effort has been focused toward upcycling low-value plastic waste give them a new lease life. However, unreactive polymer have posed formidable challenges for attempts at post-synthetic functionalization conversion into commodity chemicals. this Perspective, we discuss large untapped resources production functional polymeric materials valuable industrially relevant feedstock, dicarboxylic acids aromatic compounds. The exciting pioneering work featured herein will hopefully inspire change way view from dead-end versatile raw materials, forming basis more sustainable economy.
Язык: Английский
Процитировано
156
ACS Catalysis, Год журнала: 2022, Номер 12(20), С. 12823 - 12832
Опубликована: Окт. 7, 2022
Plastic valorization presents a significantly untapped opportunity to address environmental issues while creating the necessary economic push for circular carbon economy. Compared with conventional routes processing plastics (e.g., pyrolysis and gasification), photoreforming strategy, namely, photocatalytic plastic oxidation paired water splitting, aims achieve into commodity chemicals under mild conditions offering hydrogen fuels. Here, we implement MoS2-tipped CdS nanorod photocatalysts in an aqueous medium reform pretreated that range from polyesters polylactic acid (PLA) polyethylene terephthalate (PET)) polyolefins (PE)). The architecture of MoS2/CdS takes advantage anisotropic morphology rapid charge transfer features nanorods, by collecting electrons at MoS2 tip evolution utilizing entire sidewall nanorods rich holes toward oxidation. It is shown continuous H2 can be evolved PLA, PET (commercial granules real-world bottles), PE, these substrates are accordingly converted series valuable chemicals. This work provides effective way harness solar energy realize transformation trash (plastics) treasure (gaseous/liquid chemicals).
Язык: Английский
Процитировано
143
Chemical Reviews, Год журнала: 2023, Номер 123(8), С. 4443 - 4509
Опубликована: Апрель 17, 2023
Energy from renewable resources is central to environmental sustainability. Among the renewables, sunlight-driven fuel synthesis a sustainable and economical approach produce vectors such as hydrogen through water splitting. The photocatalytic splitting limited by oxidation half-reaction, which kinetically energetically demanding entails designer photocatalysts. Such challenges can be addressed employing alternative half-reactions. Photoreforming drive breakdown of waste plastics biomass into valuable organic products for production H2. We provide an overview photoreforming its underlying mechanisms that convert polymers H2 fuels fine chemicals. This paramount importance two complementary perspectives: (i) green energy harvesting (ii) sustainability decomposing valuables. Competitive results generation without hazards are being generated. process, mechanisms, critical assessment field scarce. address points focusing on concept up-to-date knowledge with key milestones achieved, uncovering concepts in photoreforming, (iii) design photocatalysts pathways use different polymer wastes substrates.
Язык: Английский
Процитировано
134
ACS Catalysis, Год журнала: 2022, Номер 12(14), С. 8155 - 8163
Опубликована: Июнь 23, 2022
Chemical recycling of synthetic polymers represents a promising strategy to deconstruct plastic waste and make valuable products. Inspired by small-molecule C-H bond activation, visible-light-driven reaction is developed polystyrene (PS) into ∼40% benzoic acid as well ∼20% other monomeric aromatic products at 50 °C ambient pressure. The practicality this demonstrated deconstruction real-world PS foam on gram scale. proposed proceed via oxidation pathway, which supported theoretical calculations experimental results. Fluorescence quenching experiments also support efficient electron transfer between the photocatalyst polymer substrate, providing further evidence for mechanism. This study introduces concepts from catalysis provides method tackle global crisis pollution.
Язык: Английский
Процитировано
118
Chemical Engineering Journal, Год журнала: 2022, Номер 456, С. 140994 - 140994
Опубликована: Дек. 16, 2022
Язык: Английский
Процитировано
118
Case Studies in Chemical and Environmental Engineering, Год журнала: 2024, Номер 9, С. 100673 - 100673
Опубликована: Фев. 23, 2024
It is difficult to reuse wastes from polymers due the mismatch between amount of contaminants and secondary quality feed. This type operation much more expensive cost-effective than production polymer raw materials latest materials. However, recyclable beneficial if used extensively in various concrete products wood-polymer boards. done only cleaning sorting are not particularly important for products. Polyethylene terephthalate (PET) a widely industries its excellent physical chemical properties. Besides, increasing use PET has led global crisis waste management, as improper disposal caused significant environmental damage. major source accumulated landfills, address this issue, recycling methods have evolved. In regard, present review examines techniques involved PET. Conventional influence diverse depolymerization reaction variables were discussed, upsides downsides each technique considered. The summarizes advances technologies plastic waste, focusing on bio-recycling PET, aiming sustainable, economical solutions circular economy.
Язык: Английский
Процитировано
105
Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 315, С. 121496 - 121496
Опубликована: Май 11, 2022
Язык: Английский
Процитировано
87