Organic Electrochemistry: Molecular Syntheses with Potential

ACS Central Science, Journal Year: 2021, Volume and Issue: 7(3), P. 415 - 431

Published: March 9, 2021

Efficient and selective molecular syntheses are paramount to

Language: Английский

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Electrocatalytic Refinery for Sustainable Production of Fuels and Chemicals

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(36), P. 19572 - 19590

Published: Feb. 19, 2021

Abstract Compared to modern fossil‐fuel‐based refineries, the emerging electrocatalytic refinery (e‐refinery) is a more sustainable and environmentally benign strategy convert renewable feedstocks energy sources into transportable fuels value‐added chemicals. A crucial step in conducting e‐refinery processes development of appropriate reactions optimal electrocatalysts for efficient cleavage formation chemical bonds. However, compared well‐studied primary (e.g., O 2 reduction, water splitting), mechanistic aspects materials design complex are yet be settled. To address this challenge, herein, we first present fundamentals heterogeneous electrocatalysis some reactions, then implement these establish framework by coupling situ generated intermediates (integrated reactions) or products (tandem reactions). We also set principles strategies efficiently manipulate reaction pathways.

Language: Английский

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Fast site-to-site electron transfer of high-entropy alloy nanocatalyst driving redox electrocatalysis

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Oct. 28, 2020

Abstract Designing electrocatalysts with high-performance for both reduction and oxidation reactions faces severe challenges. Here, the uniform ultrasmall (~3.4 nm) high-entropy alloys (HEAs) Pt 18 Ni 26 Fe 15 Co 14 Cu 27 nanoparticles are synthesized by a simple low-temperature oil phase strategy at atmospheric pressure. The /C catalyst exhibits excellent electrocatalytic performance hydrogen evolution reaction (HER) methanol (MOR). shows overpotential of 11 mV current density 10 mA cm −2 , activity (10.96 A mg −1 −0.07 V vs. reversible electrode) stability in alkaline medium. Furthermore, it is also efficient (15.04 ) ever reported MOR solution. Periodic DFT calculations confirm multi-active sites HER on HEA surface as key factor proton intermediate transformation. Meanwhile, construction surfaces supplies fast site-to-site electron transfer processes.

Language: Английский

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Electrocatalytic upcycling of polyethylene terephthalate to commodity chemicals and H2 fuel

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: Aug. 17, 2021

Abstract Plastic wastes represent a largely untapped resource for manufacturing chemicals and fuels, particularly considering their environmental biological threats. Here we report electrocatalytic upcycling of polyethylene terephthalate (PET) plastic to valuable commodity (potassium diformate terephthalic acid) H 2 fuel. Preliminary techno-economic analysis suggests the profitability this process when ethylene glycol (EG) component PET is selectively electrooxidized formate (>80% selectivity) at high current density (>100 mA cm −2 ). A nickel-modified cobalt phosphide (CoNi 0.25 P) electrocatalyst developed achieve 500 1.8 V in membrane-electrode assembly reactor with >80% Faradaic efficiency selectivity formate. Detailed characterizations reveal in-situ evolution CoNi P catalyst into low-crystalline metal oxy(hydroxide) as an active state during EG oxidation, which might be responsible its advantageous performances. This work demonstrates sustainable way implement waste value-added products.

Language: Английский

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Gas diffusion electrodes (GDEs) for electrochemical reduction of carbon dioxide, carbon monoxide, and dinitrogen to value-added products: a review

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1959 - 2008

Published: Jan. 1, 2021

Opportunities, challenges and design criteria associated with Gas diffusion electrodes (GDEs) for various electrochemical applications.

Language: Английский

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Comprehensive Understandings into Complete Reconstruction of Precatalysts: Synthesis, Applications, and Characterizations

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(32)

Published: May 29, 2021

Reconstruction induced by external environment (such as applied voltage bias and test electrolytes) changes catalyst component catalytic behaviors. Investigations of complete reconstruction in energy conversion recently receive intensive attention, which promote the targeted design top-performance materials with maximum utilization good stability. However, advantages reconstruction, its strategies, extensive applications have not achieved profound understandings summaries it deserves. Here, this review systematically summarizes several important advances for first time, includes 1) fundamental characteristics completely reconstructed catalysts, their principles, 2) types reconstruction-involved precatalysts oxygen evolution reaction catalysis wide pH solution, origins limited degree well strategies/principles toward 3) novel material synthesis other electrocatalysis fields, 4) advanced situ/operando or multiangle/level characterization techniques to capture dynamic processes real contributors. Finally, existing major challenges unexplored/unsolved issues on studying chemistry are summarized, an outlook further development is briefly proposed. This will arouse attention diverse fields.

Language: Английский

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Alcohols electrooxidation coupled with H2 production at high current densities promoted by a cooperative catalyst

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Jan. 10, 2022

Electrochemical alcohols oxidation offers a promising approach to produce valuable chemicals and facilitate coupled H

Language: Английский

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Room-temperature electrochemical acetylene reduction to ethylene with high conversion and selectivity

Nature Catalysis, Journal Year: 2021, Volume and Issue: 4(7), P. 565 - 574

Published: July 1, 2021

Language: Английский

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Carbon-efficient carbon dioxide electrolysers

Nature Sustainability, Journal Year: 2022, Volume and Issue: 5(7), P. 563 - 573

Published: May 12, 2022

Language: Английский

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Enabling storage and utilization of low-carbon electricity: power to formic acid

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(3), P. 1194 - 1246

Published: Jan. 1, 2021

Power to formic acidviaCO₂hydrogenation or electrochemical CO₂reduction has great potential enable a complete cycle with acid power for the storage and utilization of low-carbon electricity at scale multi-gigatonnes per year.

Language: Английский

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