Upcycling of Plastic Waste Using Photo-, Electro-, and Photoelectrocatalytic Approaches: A Way toward Circular Economy

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(7), P. 4865 - 4926

Published: March 18, 2024

Rapid industrialization and development have led to a tremendous increase in the use of various types plastic commodities daily life. For past several years, pollution has become global issue, posing serious threat mankind. The primary issue with increasing is lack proper management which created huge havoc environment. From initial phase waste management, been discarded, recycled, downcycled, or dumped into landfills large proportion, causing extreme damage ecosystem. Conventionally, treated via thermal processes such as pyrolysis incineration plants require amount capital and, therefore, harms aim circular economy. Chemical upcycling gaining attention high-potential catalytic strategy convert plastics, polyethylene terephthalate, polyethylene, polystyrene, etc. fuels, functionalized polymers, other value-added chemicals having direct impact on affordability viability. In this review, we focused photocatalysis, electrocatalysis, photoelectrocatalysis effective efficient technologies. These approaches can lower dependence nonrenewable resources are more environmentally friendly contrast conventional approaches. This review elaborately discusses pros cons provides detailed overview potential renewable energy-driven for conversion wastes valuable fuels commodity chemicals, along challenges future directions emerging approach treatment.

Language: Английский

---

Upcycling of plastic wastes for hydrogen production: Advances and perspectives

Renewable and Sustainable Energy Reviews, Journal Year: 2024, Volume and Issue: 195, P. 114333 - 114333

Published: Feb. 27, 2024

The abundant plastic wastes become an imperative global issue, and how to handle these organic gains growing scientific industrial interest. Recently, converting into hydrogen fuel has been investigated, the "waste-to-value" practice accelerates circular economy. To accelerate development of plastic-to-hydrogen conversion, in this review, recent advances conversion via thermochemical, photocatalytic, electrocatalytic routes are analyzed. All thermo-, photo-, electrochemical processes can transform different hydrogen, production efficiency depends heavily on selected techniques, operating parameters, applied catalysts. application rational-designed catalysts promote selective from feedstocks. Further studies process optimization, cost-effective catalyst design, mechanism investigation needed.

Language: Английский

---

Synergism of electrostatic attraction and tandem catalytic effect enabled efficient electrosynthesis of ammonia from a wide-range of nitrate concentrations

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149769 - 149769

Published: Feb. 16, 2024

Language: Английский

---

Selective Upcycling of Polyethylene Terephthalate towards High‐valued Oxygenated Chemical Methyl p‐Methyl Benzoate using a Cu/ZrO₂ Catalyst

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(11)

Published: Jan. 10, 2024

Abstract Upgrading of polyethylene terephthalate (PET) waste into valuable oxygenated molecules is a fascinating process, yet it remains challenging. Herein, we developed two‐step strategy involving methanolysis PET to dimethyl (DMT), followed by hydrogenation DMT produce the high‐valued chemical methyl p‐methyl benzoate (MMB) using fixed‐bed reactor and Cu/ZrO 2 catalyst. Interestingly, discovered phase structure ZrO significantly regulates selectivity products. Cu supported on monoclinic (5 %Cu/m‐ZrO ) exhibits an exceptional 86 % for conversion MMB, while tetragonal %Cu/t‐ZrO predominantly produces p‐xylene (PX) with 75 %. The superior MMB over Cu/m‐ZrO can be attributed weaker acid sites present m‐ZrO compared t‐ZrO . This weak acidity leads moderate adsorption capability facilitating its desorption. Furthermore, DFT calculations reveal catalyst shows higher effective energy barrier cleavage second C−O bond Cu/t‐ZrO catalyst; this distinction ensures high MMB. not only presents approach upgrading fine chemicals but also offers controlling primary product in multistep reaction.

Language: Английский

---

Enzymatic Mesoporous Metal Nanocavities for Concurrent Electrocatalysis of Nitrate to Ammonia Coupled with Polyethylene Terephthalate Upcycling

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(27)

Published: April 9, 2024

Electrochemical upcycling of waste pollutants into high value-added fuels and/or chemicals is recognized as a green and sustainable solution that can address the resource utilization on earth. Despite great efforts, their progress has seriously been hindered by lack high-performance electrocatalysts. In this work, bimetallic PdCu mesoporous nanocavities (MCs) are reported new bifunctional enzymatic electrocatalyst realizes concurrent electrocatalytic nitrate wastewater polyethylene terephthalate (PET) plastic waste. Abundant metal mesopores open MCs provide confinement key intermediates for deeper electroreduction accelerate transport reactants/products within/out electrocatalyst, thus affording ammonia Faradic efficiency (FE

Language: Английский

---

Interface Engineering on Heterostructural Nanosheets for Efficient Electrocatalytic-Paired Upcycling of Waste Plastics and Nitrate

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 18095 - 18106

Published: Nov. 22, 2024

Language: Английский

---

One‐Pot Synthesis Inorganic–Organic Hybrid PdNi Bimetallenes for PET Electrocatalytic Value‐Added Transformation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(34)

Published: Feb. 27, 2024

Abstract Progress is made in the advancement of efficient and durable electrocatalysts for ethylene glycol oxidation reaction (EGOR), which a critical breakthrough conversion waste plastic into high‐value‐added chemicals. Here, an organic ligand‐modified PdNi bimetallenes (PdNi O‐BMs) catalyst designed constructed through one‐pot method. Benefiting from frizzy porous surface structure inorganic–organic hybrid interface modification, O‐BMs undergo electrocatalytic reforming (EG) derived polyethylene terephthalate (PET) to form formic acid. The unique structural advantages result high EGOR performance. Meanwhile, influence Ni ligand on performance confirmed density functional theory calculations. This study reveals advanced strategy synthesis bimetallenes, providing green sustainable new approach PET value‐added transformation.

Language: Английский

---

Metallic Cu-incorporated NiFe layered double hydroxide nanosheets enabling energy-saving hydrogen generation from chlorine-free seawater electrolysis coupled with sulfion upcycling

Fuel, Journal Year: 2024, Volume and Issue: 367, P. 131506 - 131506

Published: March 19, 2024

Language: Английский

---

Electrocatalytic upcycling of plastic waste: Progress, challenges, and future

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

---

Electrocatalysis‐driven sustainable plastic waste upcycling

Electron, Journal Year: 2024, Volume and Issue: 2(2)

Published: April 29, 2024

Abstract With large quantities and natural resistance to degradation, plastic waste raises growing environmental concerns in the world. To achieve upcycling of into value‐added products, electrocatalytic‐driven process is emerging as an attractive option due mild operation conditions, high reaction selectivity, low carbon emission. Herein, this review provides a comprehensive overview upgrading via electrocatalysis. Specifically, key electrooxidation processes including target intermediates pathways electro‐reforming are discussed. Subsequently, advanced electrochemical systems, integration anodic monomer oxidation cathodic reduction photo‐involved electrolysis processes, summarized. The design strategies electrocatalysts with enhanced activity highlighted catalytic mechanisms electrocatalytic elucidated. promote electrochemistry‐driven sustainable waste, challenges opportunities further put forward.

Language: Английский

---