Renewable methanol and the energy challenge: The role of electrocatalysis

Current Opinion in Electrochemistry, Journal Year: 2024, Volume and Issue: 46, P. 101539 - 101539

Published: May 22, 2024

Language: Английский

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Twin-distortion modulated ultra-low coordination PtRuNi-Ox catalyst for enhanced hydrogen production from chemical wastewater

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 22, 2024

The development of efficient and robust catalysts for hydrogen evolution reaction is crucial advancing the economy. In this study, we demonstrate that ultra-low coordinated hollow PtRuNi-Ox nanocages exhibit superior catalytic activity stability across varied conditions, notably surpassing commercial Pt/C catalysts. Notably, achieve current densities 10 mA cm−2 at only 19.6 ± 0.1, 20.9 21.0 0.1 mV in alkaline freshwater, chemical wastewater, seawater, respectively, while maintaining satisfied with minimal loss after 40,000 cycles. situ experiments theoretical calculations reveal coordination Pt, Ru, Ni atoms creates numerous dangling bonds, which lower water dissociation barrier optimizing adsorption. This research marks a notable advancement precise engineering atomically dispersed multi-metallic centers energy-related applications. Efficient are key to economy, particularly reaction. Here, authors report offer comparable performance both freshwater wastewater conditions.

Language: Английский

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Maneuver of the d-orbital spin polarization of Fe single atomic sites via a near-range axial ligand effect for boosting oxygen reduction reaction

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125007 - 125007

Published: Jan. 1, 2025

Language: Английский

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Phase‐Engineered Bi‐RuO₂ Single‐Atom Alloy Oxide Boosting Oxygen Evolution Electrocatalysis in Proton Exchange Membrane Water Electrolyzer

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

Published: Jan. 16, 2025

Abstract Engineering nanomaterials at single‐atomic sites can enable unprecedented catalytic properties for broad applications, yet it remains challenging to do so on RuO 2 ‐based electrocatalysts proton exchange membrane water electrolyzer (PEMWE). Herein, the rational design and construction of Bi‐RuO single‐atom alloy oxide (SAAO) are presented boost acidic oxygen evolution reaction (OER), via phase engineering a novel hexagonal close packed ( hcp ) RuBi alloy. This SAAO electrocatalyst exhibits low overpotential 192 mV superb stability over 650 h 10 mA cm −2 , enabling practical PEMWE that needs only 1.59 V reach 1.0 A under industrial conditions. Operando differential electrochemical mass spectroscopy analysis, coupled with density functional theory studies, confirmed adsorbate‐evolving mechanism incorporation Bi 1 improves activity by electronic optimization hindering surface Ru demetallation. work not introduces new strategy fabricate high‐performance atomic‐level, but also demonstrates their potential use in electrolyzers.

Language: Английский

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Single-atom catalysts for (photo)electrocatalytic biomass valorization to high-value-added chemicals

Microstructures, Journal Year: 2025, Volume and Issue: 5(1)

Published: Jan. 14, 2025

As a crucial renewable energy resource, biomass can be converted into high-value-added chemicals via unique catalytic routes, which facilitate the reduction of excessive dependency on fossil resources. However, complex functional groups inherent in and biomass-derived compounds enable considerable difficulties for their selective functionalization. The precise cleavage special chemical bonds highly depended structure design catalysts. Single-atom catalysts (SACs) have garnered significant attention valorization through electrocatalytic photoelectrocatalytic processes due to maximal atom utilization efficiency, electronic structure, tunable coordination environments. present review outlines latest research progress this emerging field, focusing (photo)electrocatalytic application SACs valorization, including cellulose-derived hemicellulose-derived lignin. We also emphasize innovative modulation atomically dispersed metal active sites at atomic level. Through state-of-the-art systems, we elaborately discuss structure-activity relationship elucidate mechanisms over SACs. Finally, provide prospects valorization.

Language: Английский

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Electronic modulation induced by doping V to accelerate the kinetics of oxygen electrocatalysis in direct methanol fuel cell

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159922 - 159922

Published: Jan. 1, 2025

Language: Английский

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Undercoordinated Two-Dimensional Pt Nanoring Stabilized by a Ring-on-Sheet Nanoheterostructure for Highly Efficient Alkaline Hydrogen Evolution Reaction

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Platinum (Pt) is a state-of-the-art electrocatalyst for green hydrogen production in alkaline electrolytes. The delicate design and fabrication of two-dimensional (2D) Pt nanocatalysts can significantly enhance atomic utilization efficiency, while further improving intrinsic catalytic performance by modulating the density surface active sites. However, high energy morphology complexity 2D nanostructures often result poor structural stability under working conditions. Here, we report synthesis ring-on-sheet nanoheterostructure featuring abundant low-coordination sites which defect-rich nanoring stabilized an ultrathin rhodium (Rh) support. Rh@Pt exhibits remarkably enhanced activity electrocatalytic evolution reaction media compared to defect-free core-shell nanoplates commercial Pt/C. This work provides new insights nanoheterostructures with efficient durable electrocatalysis.

Language: Английский

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Microinjection assistant synthesis of Pt-Pd hollow nanoparticles for enhanced methanol oxidation reaction

CrystEngComm, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A large-scale synthesis of electrocatalysts with controllable composition and a surface atomic structure is crucial for practical applications.

Language: Английский

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Boosting extraordinary energy-storage in BaTiO3-based ferroelectric ceramics via surface reconstruction cation-defects engineering

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(6)

Published: Feb. 1, 2025

Language: Английский

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Boosting Alcohol Oxidation Electrocatalysis with Multifactorial Engineered Pd1/Pt Single-Atom Alloy-BiOx Adatoms Surface

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: March 3, 2025

Abstract Engineering nanomaterials at single-atomic sites could enable unprecedented catalytic properties for broad applications, yet it remains challenging to do so on the surface of multimetallic nanocrystals. Herein, we present multifactorial engineering (size, shape, phase, and composition) fully ordered PtBi nanoplates atomic level, achieving a unique catalyst where face-centered cubic ( fcc ) Pt edges are modified by isolated Pd atoms BiO x adatoms. This 1 /Pt-BiO electrocatalyst exhibits an ultrahigh mass activity 16.01 A mg −1 Pt+Pd toward ethanol oxidation in alkaline electrolyte enables direct fuel cell peak power density 56.7 mW cm −2 . The surrounding adatoms critical mitigating CO-poisoning surface, /Pt single-atom alloy further facilitates electrooxidation CH 3 2 OH. work offers new insights into rational design construction sophisticated highly efficient electrocatalysis.

Language: Английский

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