Electrocatalytic valorization of 5-hydroxymethylfurfural coupled with hydrogen production using tetraruthenium-containing polyoxometalate-based composites

Abstract

Electrocatalytic biomass valorization represents a promising route to produce sustainable and carbon-neutral products, especially while coupling with hydrogen production. Here we reported a Ru4/PEI-rGO electrocatalyst, prepared by the electrostatic integration...

Transition‐metal Substituted Polyoxometalates as Soluble RedOx Mediators in Electrocatalytic Biomass Conversion

“…The well‐understood redox properties render POMs of particular interest as inorganic molecular redox mediators for electro‐organic transformations which remained a rather niche area in research up to now [26–31] . In an indirect electrolysis, redox mediators act as electron transfer agents between the electrode and the substrate in solution.…”

“…[3,24,25] The well-understood redox properties render POMs of particular interest as inorganic molecular redox mediators for electro-organic transformations which remained a rather niche area in research up to now. [26][27][28][29][30][31] In an indirect electrolysis, redox mediators act as electron transfer agents between the electrode and the substrate in solution. For example, the mediator is oxidized at the anode surface and diffuses into the bulk solution where it is reduced by an organic substrate before returning to the anode to be oxidized again.…”

Enhanced catalysis of a vanadium-substituted Keggin-type polyoxomolybdate supported on the M3O4/C (M = Fe or Co) surface enables efficient and recyclable oxidation of HMF to DFF

“…[5][6][7][8][9][10][11] Among them, DFF plays a pivotal role as a crucial chemical intermediate for the synthesis of antibiotics, 12 fluorescent dyes, 13 adhesives and biomass-based resins. 14 Although many HMF oxidation catalysts have been studied and reported, [15][16][17][18][19][20][21][22][23][24] the selective transformation of HMF into DFF presents a considerable challenge due to the existence of multiple parallel oxidation reaction pathways and overoxidation of DFF. Moreover, harsh reaction conditions including elevated temperatures and pressures further increase the actual cost.…”

Bromine-mediated strategy endows efficient electrochemical oxidation of amine to nitrile

“…However, most of the reported catalytic systems for this transformation demand oxidants such as 2,2,6,6-tetramethylpiperidoxyl (TEMPO) and high-pressure oxygen or air and operate in organic solvents at elevated temperatures. [9][10][11][12] Electrosynthesis, [13][14][15] which utilizes electrons as clean oxidants and reducing agents, has facilitated the development of electrocatalytic oxidation of amines to generate nitriles. [16][17][18][19][20][21] This is typically achieved via direct oxidation of amine at the anode surface.…”

“…Electrosynthesis, 13–15 which utilizes electrons as clean oxidants and reducing agents, has facilitated the development of electrocatalytic oxidation of amines to generate nitriles. 16–21 This is typically achieved via direct oxidation of amine at the anode surface.…”