Dry reforming of methane over Ni/Al2O3 catalysts: Support morphological effect on the coke resistance

Fuel, Journal Year: 2024, Volume and Issue: 362, P. 130855 - 130855

Published: Jan. 5, 2024

Language: Английский

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Copper/metal oxide heterostructures for electrochemical carbon dioxide reduction

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Language: Английский

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Semi‐Confinement Effect Enhances CH₄ and C₂H₄ Production in CO₂ Electrocatalytic Reduction

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

Published: Jan. 21, 2025

Abstract Achieving fast conversion and precise regulation of product selectivity in electrochemical CO 2 reduction reaction (CO RR) remains a challenge. The space confinement effect provides theoretical basis for the design catalysts different morphology sizes reveals physical phenomena caused by electrons other particles at nanoscale. In this work, semi‐confinement concept is introduced mesoporous silica nanosphere supported Cu catalyst (Cu‐MSN) prepared as typical example to realize RR enhancement (methane vs ethylene). semi‐confined structure partially solves mass transfer problem classical confined catalysis. Cu‐MSN allows flexible controls aggregation form species loading amount, which achieves free switch from methane Faraday efficiency 71.1% ethylene 66.4%. Various characterizations confirm that adsorption behavior local coordination transformation (from Cu─O─Si Cu─O─Cu), can stabilize key intermediates * CHO COH generating respective ethylene.

Language: Английский

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Yolk-shell nanoparticle-loaded multifunctional membrane with photothermal and advanced oxidation properties

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162091 - 162091

Published: April 1, 2025

Language: Английский

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Hollow carbon-based materials for electrocatalytic and thermocatalytic CO₂ conversion

Chemical Science, Journal Year: 2023, Volume and Issue: 15(3), P. 854 - 878

Published: Dec. 7, 2023

This review covers the syntheses, functionalization strategies of hollow carbon-based materials, as well their applications in electrocatalytic and thermocatalytic CO 2 conversion.

Language: Английский

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Nanoarchitectonics for structural tailoring of yolk-shell architectures for electrochemical applications

Science and Technology of Advanced Materials, Journal Year: 2024, Volume and Issue: 25(1)

Published: Oct. 29, 2024

Developing electrochemical energy storage and conversion systems, such as capacitors, batteries, fuel cells is crucial to address rapidly growing global demands environmental concerns for a sustainable society. Significant efforts have been devoted the structural design engineering of various electrode materials improve economic applicability performance. The yolk-shell structures represent special kind core-shell morphologies, which show great application potential in storage, controlled delivery, adsorption, nanoreactors, sensing, catalysis. Their controllable void spaces may facilitate exposure more ative sites redox reactions enhance selective adsorption. Based on different nanoarchitectonic designs fabrication techniques, with nanofeatures homo- or hetero-compositions provide multiple synergistic effects promote electrode/electrolyte interfaces. This review focused key features architectures, highlighting recent advancements their adjustable space mono- multi-metallic composites. tailorable structure functionality nanostructures processes are also summarized.

Language: Английский

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Copper/Cobalt-Loaded Carbon Nanostructures as Catalysts for Electrochemical CO₂ Reduction

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(9), P. 10479 - 10489

Published: April 25, 2024

The electrochemical reduction of CO2 to produce high-value multicarbon products represents a challenging yet highly desirable process, particularly due the inefficient C–C coupling observed in current electrocatalysts. In this study, Cu2+ and Co2+ were introduced into ZIF-8 as precursors synthesize series Co- CuCo-doped carbon nanostructure materials with varying Co-to-Cu ratios. X-ray diffraction photoelectron spectroscopy (XPS) analyses confirmed successful doping metal Co form Co–Nx, while Cu was partly doped nanoparticles attached substrate surface single atoms forming Cu–Nx. Transmission electron microscopy energy-dispersive revealed uniform distribution elemental on substrate, loaded nanocluster surface. Linear sweep voltammetry tests indicated that Cu/CoCu-Nx-C composites exhibited enhanced reactivity toward compared other samples. At −0.19 V (vs RHE), Faradaic efficiencies (FEs %) C2H4, C2H6, CH4, CO, H2 over 29.7, 8.6, 20.2, 9.8, 31.5%, respectively. influence modes selectivity electrocatalytic investigated. Results showed higher FE C2 Cu/Cu–Nx-C, nearly 10 times density. Mechanistic insights from acid-etching experiments XPS synergistic interaction between metallic Cu, promoting generation products. Co–Nx improved *CO coverage, facilitating subsequent neighboring Additionally, CH4 production attributed (111) crystalline facets isolated Overall, research provides an important understanding creation straightforward effective catalysts for CO2. It holds considerable potential hydrocarbons using dioxide.

Language: Английский

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Photocatalytic oxidative cyclization of aromatic thioamides catalyzed by Cu₂O rhombic dodecahedra

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(23), P. 13792 - 13799

Published: Jan. 1, 2024

Cu 2 O rhombic dodecahedra can photocatalyze the oxidative cyclization reaction of diverse thioamides to form 3,5-diphenyl-1,2,4-thiadiazoles.

Language: Английский

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Research progress of copper-based catalysts for CO2 electrochemical reduction

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 89, P. 664 - 685

Published: Oct. 1, 2024

Language: Английский

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Regulation of Cu-Mof Reconstruction for Enhanced Co2 Electroreduction

Published: Jan. 1, 2025

Language: Английский

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