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Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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Millifluidics for Chemical Synthesis and Time-resolved Mechanistic Studies
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Continuous-Flow Microfluidic Synthesis Enhances C2+ Selectivity for Cu2O Catalysts.

Carlota Casas1,2, Anh Tuan Ngo3, João Pedro Vale4

  • 1Departament de Química Inorgànica i Orgànica, Institut De Química Teòrica i Computacional, Universitat De Barcelona, Barcelona, Spain.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|July 14, 2026
PubMed
Summary

Microfluidic synthesis precisely controls copper oxide nanoparticle structure for enhanced carbon dioxide electroreduction. This method yields superior multicarbon product selectivity compared to traditional batch synthesis.

Keywords:
CO2‐to‐C2+ electrocatalysiscopper(I) oxide nanoparticlesmicrofluidic technologiesreaction‐diffusion area

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Nanotechnology

Background:

  • Electrochemical reduction of carbon dioxide (CO2) to multicarbon (C2+) products is vital for sustainable chemical and transportation sectors.
  • Achieving high C2+ selectivity demands precisely engineered catalyst structures and advanced synthesis methods.

Purpose of the Study:

  • To leverage microfluidic technology for rational design and synthesis of copper(I) oxide (Cu2O) nanoparticles with tunable features.
  • To investigate the structure-property relationships governing C2+ selectivity in CO2 electroreduction.

Main Methods:

  • Microfluidic synthesis under laminar flow to control Cu2O nanoparticle size, morphology, and defect density.
  • In situ liquid-phase transmission electron microscopy and operando X-ray absorption spectroscopy for catalyst evolution studies.
  • Surface modification with polyaromatic films to enhance C2+ formation.

Main Results:

  • Microfluidic synthesis enabled fine control over the reaction-diffusion interface, resulting in highly defected and nanoporous Cu2O nanoparticles.
  • Cu2O nanoparticles synthesized via microfluidics exhibited significantly higher C2+ selectivity than those from batch methods.
  • Surface modification further enhanced C2+ production, demonstrating synergistic effects.

Conclusions:

  • Microfluidic synthesis offers unprecedented control over catalyst structure for enhanced CO2 electroreduction.
  • Engineered Cu2O nanoparticles with high defect density and nanoporosity are key for efficient C2+ product formation.
  • This approach provides a powerful platform for developing advanced electrocatalysts for CO2 conversion.