Electrochemical Oxidation of Small Molecules for Energy‐Saving Hydrogen Production

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(30)

Published: May 27, 2024

Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.

Language: Английский

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Design and regulation of defective electrocatalysts

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review focuses on the synthesis and characterization of defective electrocatalysts, internal correlation between defects catalytic activity, development application electrocatalysts in various fields.

Language: Английский

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Rational design of precatalysts and controlled evolution of catalyst-electrolyte interface for efficient hydrogen production

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 22, 2025

The concept of precatalyst is widely accepted in electrochemical water splitting, but the role activation and resulted changes electrolyte composition often overlooked. Here, we elucidate impact potential-dependent for both using Co2Mo3O8 as a model system. Potential-dependent reconstruction results an electrochemically stable Co(OH)2@Co2Mo3O8 catalyst additional Mo dissolved MoO42− into electrolyte. Co(OH)2/Co2Mo3O8 interface accelerates Volmer reaction negative potentials induced Mo2O72− (from MoO42−) further enhances proton adsorption H2 desorption. Leveraging these insights, well-designed MoO42−/Mo2O72− modified achieves Faradaic efficiency 99.9% yield 1.85 mol h−1 at −0.4 V versus reversible hydrogen electrode (RHE) generation. Moreover, it maintains over one month approximately 100 mA cm−2, highlighting its industrial suitability. This work underscores significance understanding on evolution design. properties electrocatalysis crucial authors report efficient transition metal production by manipulating composition.

Language: Английский

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Oxygen Vacancy in Accelerating the Electrocatalytic Small Molecule Oxidation Properties

Electrochemical Energy Reviews, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 27, 2025

Language: Английский

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Rational constructing 2D/3D p-n heterojunctions to modulate hydrogen evolution efficient pathways for enhances photocatalytic hydrogen production

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

Language: Английский

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Unlocking clean energy: Exploring FeVO4 nanopebble thin film as an outstanding photoanode for efficient water splitting

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1002, P. 175391 - 175391

Published: July 4, 2024

Language: Английский

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Piezoelectrical Hydrogel Containing Cationic Vacancies Bismuth Sulfide with Enhanced Sonodynamic/Nanozyme Activity for Synergistic Killing Bacteria and Boosting Osteoblast Differentiation

Journal of Materials Chemistry B, Journal Year: 2025, Volume and Issue: 13(10), P. 3420 - 3436

Published: Jan. 1, 2025

A piezoelectric nanozyme is a novel biomaterial with the integration of piezoelectricity and activity that has capability killing bacteria promoting cell responses under mechanical stimulus exhibits great prospects in tissue regeneration. Herein, bismuth sulfide (BS) cationic vacancies (VBS) was synthesized, which enhanced activities compared BS. Moreover, hydrogel VBS phenylboronic acid grafted sodium alginate-arginine (VBS-PSA) prepared. Triggered by ultrasound (US) high power (>0.5 W cm-2), VBS-PSA produces large amount reactive oxygen species (ROS) through both piezoelectricity-enhanced sonodynamic efficiency peroxidase-like (POD-like) activity, thereby displaying powerful antibacterial capability. However, low-power US (≤0.5 effect generates electrical signals significantly stimulate osteoblast (proliferation differentiation) enhance catalase-like (CAT-like) for scavengers ROS generation oxygen, creating favorable microenvironment growth. Our study presents strategy to apply hydrogels enhancing synergistically kill responses. The would have potential repair infected bone defects.

Language: Английский

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Selectively Steering the Retention and Cleavage of C–C Bond in Electrooxidation of PET Plastic and Biomass-Derived Alcohols by Defective Ni(OH)_2–x-Supported Pt

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 4759 - 4769

Published: March 6, 2025

Language: Английский

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Ions‐Migration‐Mediated Structural Stabilization in NiFe (Oxy)Hydroxides for Durable Alkaline Water Electrolysis

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract Elevating iron‐involved sites in NiFe (oxy)hydroxides significantly accelerates oxygen evolution reaction (OER) kinetics but often sacrifices stability due to extensive metal ablation during industrial electrolysis. Here, an ions migration‐induced stabilization strategy is introduced explore robust catalysts for OER. The present approach involving cathodic polarization of Fe‐rich NiFe‐layered double hydroxides (LDH) facilitates selective substitution Ni with Fe cations and deep oxyanions OH ‐ , leading decreased layer thickness, enriched sites, aggravated lattice distortion reorganized NiFe‐LDH (R‐NiFe‐LDH). Correspondingly, R‐NiFe‐LDH fully transforms into γ‐(NiFe)OOH retained nanosheet morphology, reduced distortions, dramatically inhibited dissolution prolonged It achieves exceptional durability at 500 mA cm −2 retaining ≈90% over 5 days, substantially outperforming pristine (50% loss). Over 2 months, delivers only a 70 mV overpotential increase, whereas decays by 140 just 75 h. An anion exchange membrane water electrolyzer applying as both electrodes exhibit zero decay 1000 100 h, compared rate 3.6 h −1 the counterpart. This work showcases straightforward engineering atomic arrangements toward

Language: Английский

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Unraveling the Impact of Oxygen Vacancy on Electrochemical Valorization of Polyester Over Spinel Oxides

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 2, 2024

Abstract Electrochemical upcycling of end‐of‐life polyethylene terephthalate (PET) using renewable electricity offers a route to generate valuable chemicals while processing plastic wastes. However, it remains huge challenge design an electrocatalyst with reliable structure‐property relationships for PET valorization. Herein, spinel Co 3 O 4 rich oxygen vacancies improved activity toward formic acid (FA) production from hydrolysate is reported. Experimental investigations combined theoretical calculations reveal that incorporation V into not only promotes the generation reactive hydroxyl species (OH * ) at adjacent tetrahedral 2+ (Co2+ Td), but also induces electronic structure transition octahedral 3+ (Co3+ Oh) Oh), which typically functions as highly‐active catalytic sites ethylene glycol (EG) chemisorption. Moreover, enlarged Co‐O covalency induced by facilitates electron transfer EG OH via Co2+ Oh‐O‐Co2+ Td interaction and following C─C bond cleavage direct oxidation glyoxal intermediate pathway. As result, ‐Co catalyst exhibits high half‐cell oxidation, Faradaic efficiency (91%) productivity (1.02 mmol cm −2 h −1 FA. Lastly, demonstrated hundred gram‐scale formate crystals can be produced real‐world bottles two‐electrode electroreforming, yield 82%.

Language: Английский

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