Electrochemical oxidation of biomass derived 5-hydroxymethylfurfural (HMF): pathway, mechanism, catalysts and coupling reactions

Green Chemistry, Год журнала: 2021, Номер 23(12), С. 4228 - 4254

Опубликована: Янв. 1, 2021

HMF electrooxidation is emerging as a powerful and promising method to produce wide range of high-value chemicals on account mild operation conditions, controllable selectivity, scalability.

Язык: Английский

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Recent progress in first row transition metal Layered double hydroxide (LDH) based electrocatalysts towards water splitting: A review with insights on synthesis

Coordination Chemistry Reviews, Год журнала: 2022, Номер 469, С. 214666 - 214666

Опубликована: Июль 1, 2022

Язык: Английский

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Unraveling Two Pathways for Electrochemical Alcohol and Aldehyde Oxidation on NiOOH

Journal of the American Chemical Society, Год журнала: 2020, Номер 142(51), С. 21538 - 21547

Опубликована: Дек. 15, 2020

Selective oxidation of alcohols to their corresponding aldehyde or carboxylic acid is one the most important classes organic synthesis reactions. In addition, electrochemical alcohol considered a viable anode reaction that can be paired with H2 evolution other reductive fuel production reactions in and photoelectrochemical cells. NiOOH, material has been extensively studied as an oxygen catalyst, among promising electrocatalysts for selective oxidation. Electrochemical by NiOOH understood since 1970s proceed through hydrogen atom transfer NiOOH. this study, we establish there second, more dominant general pathway on enabled at positive potentials. Using three-step procedure developed, deconvoluted currents these two pathways various aldehydes. The results show aldehydes have distinct difference respective preferences pathways. Our also allowed us evaluate Ni valence involved different elucidate mechanistic differences. experimental coupled computational investigation, propose new entails hydride from substrate Ni4+ sites This study offers essential foundation understand oxidative dehydrogenation oxide hydroxide-based catalytic electrodes.

Язык: Английский

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Metal organic frameworks for biomass conversion

Chemical Society Reviews, Год журнала: 2020, Номер 49(11), С. 3638 - 3687

Опубликована: Янв. 1, 2020

This review narrates the recent developments on catalytic applications of pristine metal–organic frameworks (MOFs), functionalized MOFs, guests embedded over MOFs and derived carbon composites for biomass conversion into platform chemicals.

Язык: Английский

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Recent Advance of Transition‐Metal‐Based Layered Double Hydroxide Nanosheets: Synthesis, Properties, Modification, and Electrocatalytic Applications

Advanced Energy Materials, Год журнала: 2021, Номер 11(14)

Опубликована: Фев. 24, 2021

Abstract Nowadays, to alleviate the growing pressure of energy shortages and environmental pollution, electrochemical conversion is seen as a fossil‐free, secondary pollution‐free, highly efficiency pathway. Electrocatalysts, “heart” process, play key role in accelerating reaction rates promoting efficiency. Transition‐metal‐based layered double hydroxides (TM LDHs), one famous electrocatalysts, show unique 2D supermolecular‐stratified structure, excellent electronic properties, their raw materials are easily available. In this review, electrocatalysis‐related properties TM LDHs state‐of‐the‐art synthesis methods LDH‐based electrocatalysts summarized. Modifications for development included, such carbon modification, defect engineering, noble metal loading. Then, application LDH nanosheets field electrocatalysis reviewed detail. Finally, recent challenges, ongoing improvements, future expectations presented.

Язык: Английский

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2,5-Furandicarboxylic acid production via catalytic oxidation of 5-hydroxymethylfurfural: Catalysts, processes and reaction mechanism

Journal of Energy Chemistry, Год журнала: 2020, Номер 54, С. 528 - 554

Опубликована: Июнь 16, 2020

Язык: Английский

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Water electrolysis for hydrogen production: from hybrid systems to self-powered/catalyzed devices

Energy & Environmental Science, Год журнала: 2023, Номер 17(1), С. 49 - 113

Опубликована: Ноя. 7, 2023

This perspective highlights recent advancements in innovative strategies to provide valuable insights into the potential for energy-saving hydrogen production through water electrolysis.

Язык: Английский

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Electrodeposition: Synthesis of advanced transition metal-based catalyst for hydrogen production via electrolysis of water

Journal of Energy Chemistry, Год журнала: 2020, Номер 57, С. 547 - 566

Опубликована: Авг. 29, 2020

Язык: Английский

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Understanding the Roles of Electrogenerated Co³⁺ and Co⁴⁺ in Selectivity‐Tuned 5‐Hydroxymethylfurfural Oxidation

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(37), С. 20535 - 20542

Опубликована: Июль 21, 2021

Abstract The Co‐based electrocatalyst is among the most promising candidates for electrochemical oxidation of 5‐hydroxymethylfurfural (HMF). However, intrinsic active sites and detailed mechanism this catalyst remains unclear. We combine experimental evidence a theoretical study to show that electrogenerated Co 3+ 4+ species act as chemical oxidants but with distinct roles in selective HMF oxidation. It found only capable oxidizing formyl group produce carboxylate while required initial hydroxyl significantly faster kinetics. As result, product distribution shows explicit dependence on states production 5‐hydroxymethyl‐2‐furancarboxylic acid (HMFCA) 2,5‐furandicarboxylic (FDCA) are achieved by tuning applied potential. This work offers essential mechanistic insight Co‐catalyzed organic reactions might guide design more efficient electrocatalysts.

Язык: Английский

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Electrochemical biomass valorization on gold-metal oxide nanoscale heterojunctions enables investigation of both catalyst and reaction dynamics with operando surface-enhanced Raman spectroscopy

Chemical Science, Год журнала: 2020, Номер 11(7), С. 1798 - 1806

Опубликована: Янв. 1, 2020

The electrochemical oxidation of biomass platforms such as 5-hydroxymethylfurfural (HMF) to value-added chemicals is an emerging clean energy technology. However, mechanistic knowledge this reaction in context still lacking and operando studies are even more rare. In work, we utilize core-shell gold-metal oxide nanostructures which enable surface-enhanced Raman spectroelectrochemical simultaneously visualize catalyst material transformation surface intermediates under applied voltage. As a case study, show how the NiOOH from ∼1-2 nm amorphous Ni layers facilitates onset HMF 2,5-furandicarboxylic acid (FDCA), attained with 99% faradaic efficiency 1 M KOH. contrast KOH, formation suppressed, consequently sluggish 10 mM at highly oxidizing potentials. Operando experiments elucidate adsorption interaction dictates product selectivity evolve potential. We further extend our methodology investigate NiFe, Co, Fe, CoFe catalysts demonstrate that high water activity not necessarily correlated excellent performance highlight catalytic factors important for reactant-surface interactions catalysts' physical electronic structure. insights extracted expected pave way deepened understanding wide array systems organic transformations CO2 fixation.

Язык: Английский

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