A unified view on catalytic conversion of biomass and waste plastics

Nature Reviews Chemistry, Journal Year: 2022, Volume and Issue: 6(9), P. 635 - 652

Published: Aug. 11, 2022

Language: Английский

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Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 3694 - 3812

Published: March 22, 2024

Electrocatalytic water splitting driven by renewable electricity has been recognized as a promising approach for green hydrogen production. Different from conventional strategies in developing electrocatalysts the two half-reactions of (e.g., and oxygen evolution reactions, HER OER) separately, there growing interest designing bifunctional electrocatalysts, which are able to catalyze both OER. In addition, considering high overpotentials required OER while limited value produced oxygen, is another rapidly exploring alternative oxidation reactions replace hybrid toward energy-efficient generation. This Review begins with an introduction on fundamental aspects splitting, followed thorough discussion various physicochemical characterization techniques that frequently employed probing active sites, emphasis reconstruction during redox electrolysis. The design, synthesis, performance diverse based noble metals, nonprecious metal-free nanocarbons, overall acidic alkaline electrolytes, thoroughly summarized compared. Next, their application also presented, wherein anodic include sacrificing agents oxidation, pollutants oxidative degradation, organics upgrading. Finally, concise statement current challenges future opportunities presented hope guiding endeavors quest sustainable

Language: Английский

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Electrocatalytic Upcycling of Biomass and Plastic Wastes to Biodegradable Polymer Monomers and Hydrogen Fuel at High Current Densities

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(11), P. 6144 - 6155

Published: Feb. 17, 2023

Transformation of biomass and plastic wastes to value-added chemicals fuels is considered an upcycling process that beneficial resource utilization. Electrocatalysis offers a sustainable approach; however, it remains huge challenge increase the current density deliver market-demanded with high selectivity. Herein, we demonstrate electrocatalytic strategy for glycerol (from biodiesel byproduct) lactic acid ethylene glycol polyethylene terephthalate waste) glycolic acid, both products being as valuable monomers biodegradable polymer production. By using nickel hydroxide-supported gold electrocatalyst (Au/Ni(OH)2), achieve selectivities (77 91%, respectively) densities at moderate potentials (317.7 mA/cm2 0.95 V vs RHE 326.2 1.15 RHE, respectively). We reveal can be enriched Au/Ni(OH)2 interface through their adjacent hydroxyl groups, substantially increasing local concentrations thus densities. As proof concept, employed membrane-free flow electrolyzer triglyceride PET bottles, attaining 11.2 g coupled 9.3 L H2 13.7 9.4 H2, respectively, revealing potential coproduction fuel from in fashion.

Language: Английский

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Rational Design of Chemical Catalysis for Plastic Recycling

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(8), P. 4659 - 4679

Published: April 5, 2022

Plastics are indispensable, but their pollution is triggering a global environmental crisis. Although many end-of-life catalytic options have involved converting plastics into valuable products, deep understanding of the relationship between polymer structure and recycling performance significant urgently needed. Here, we start with primer polymeric chain structures on chemical discuss structure–performance polymer, catalyst, reaction. Specifically, development challenges re/upcycling waste PET polyolefins discussed in-depth. In addition, also present some prospects for innovations in catalyst synthesis reaction engineering basis relationship. The discussion ends brief perspective future plastic re/upcycling. Overall, intelligent catalysis design necessary incentivizing relieving burden plastics.

Language: Английский

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Progress and perspective for conversion of plastic wastes into valuable chemicals

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 52(1), P. 8 - 29

Published: Dec. 5, 2022

We divide the up-to-date techniques into two categories: technologies executed under violent conditions and mild conditions, we present a timely summary of mechanism bond cleavage in plastic waste to produce valuable chemicals.

Language: Английский

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Recent Advances on Electrolysis for Simultaneous Generation of Valuable Chemicals at both Anode and Cathode

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(46)

Published: Nov. 6, 2021

Abstract To make efficient use of electrical energy in the whole electrocatalysis conversion process, integrating anode and cathode reactions plays a vital role. The combination electrocatalytic anodic oxidation with cathodic reduction can not only maximize return investment, but also produces value‐added materials on both sides. Herein, this review, recent advances co‐electrolysis processes for valuable chemical production are systematically summarized. be more specific, popular hydrogen evolution reaction, carbon dioxide nitrogen reaction as well nitrate integrated to products, respectively comprehensively reviewed, then other paired electrolysis systems (especially biomass‐based compounds) toward high‐value‐added generation discussed detail. This review sheds light integration reductions develop high‐value substances. benefit researchers facilitate progress field, challenges future prospects these proposed.

Language: Английский

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Electrocatalytic Valorization of Poly(ethylene terephthalate) Plastic and CO₂ for Simultaneous Production of Formic Acid

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(11), P. 6722 - 6728

Published: May 23, 2022

The electro-reforming of polymer plastic waste and CO2 has the merits for producing value-added chemicals alleviating environmental pollution. Herein, we report an electrocatalytic integrating strategy efficient valorization poly(ethylene terephthalate) (PET) to simultaneously produce formic acid at both anode cathode. NiCo2O4 electrocatalyst displays a high Faradaic efficiency 90% production, which indicates excellent selectivity PET hydrolysate oxidation. By coupling oxidation reaction with reduction reaction, assembled electrolyzer exhibits low cell voltage 1.55 V drive integrated two half-reactions. Furthermore, 155% can be achieved 1.90 V. This study suggests that could energy-efficient economically viable realize production chemicals.

Language: Английский

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From trash to treasure: Chemical recycling and upcycling of commodity plastic waste to fuels, high-valued chemicals and advanced materials

Journal of Energy Chemistry, Journal Year: 2022, Volume and Issue: 69, P. 369 - 388

Published: Jan. 10, 2022

Language: Английский

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Efficient Electrocatalytic Oxidation of Glycerol via Promoted OH* Generation over Single-Atom-Bismuth-Doped Spinel Co₃O₄

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(19), P. 12432 - 12443

Published: Sept. 28, 2022

The renewable electricity-driven electrocatalytic oxidation of biomass represents a pathway to produce value-added chemicals from waste such as glycerol (a byproduct industrial biodiesel production). However, it remains difficult design an efficient electrocatalyst with explicit structure–property relationships. Herein, we report single-atom bismuth (Bi)-doping strategy endow Co3O4 enhanced activity and selectivity toward reaction (GOR). Experimental characterizations theoretical calculations reveal that Bi substitutes cobalt at octahedral sites (CoOh3+) in Co3O4, facilitating the generation reactive hydroxyl species (OH*) adjacent tetrahedral Co (CoTd2+). Mechanism studies demonstrate OH* accelerates groups carbon–carbon (C–C) bond cleavage, achieving GOR (400 mA cm–2 1.446 V vs reversible hydrogen electrode, RHE) high faradaic efficiency formate (97.05 ± 2.55%). Our study shows promising way promote electro-oxidation spinel oxides for valorization by doping strategy.

Language: Английский

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Earth‐Abundant Metal‐Based Electrocatalysts Promoted Anodic Reaction in Hybrid Water Electrolysis for Efficient Hydrogen Production: Recent Progress and Perspectives

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(25)

Published: May 20, 2022

Abstract Exploring advanced technologies to efficiently produce green hydrogen energy is imperative alleviate the crisis and environmental pollution. Conventional overall water electrolysis (OWE) has been regarded as a promising approach for effective H 2 production, however, it largely restricted by sluggish kinetics of anodic oxygen evolution reaction (OER). Coupling kinetically favorable reactions, such biomass‐derived compound oxidation pollutant degradation, with (HER) in hybrid (HWE), can not only solve biomass recycling emission problems but also save cost clean generation. Hence, various earth‐abundant electrocatalysts have developed catalyze those yet some tedious preparation unsatisfactory performance still exist. Given gap between research practical applications, this review summarizes recent progress diverse alternative reactions over last five years together their application HWE systems. An in‐depth understanding different mechanisms assessments toward discussed further enhance efficiency. The advantages, differences, critical issues systems are thoroughly well, providing new avenue low‐voltage production from renewable resources waste products.

Language: Английский

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