Continuous-Flow Microfluidic Synthesis Enhances C2+Selectivity for Cu2 O Catalysts

The Potential of Continuous-Flow Microfluidics for Advanced Catalyst Design

https://zenodo.org/records/21620930

Researchers from the EVA consortium have published a new open-access study in Advanced Science demonstrating how continuous-flow microfluidic technologies can be used to precisely engineer copper oxide (Cu₂O) nanoparticles with enhanced performance for carbon dioxide (CO₂) electroreduction.

The study presents a novel synthesis strategy that leverages laminar-flow microfluidics to control the reaction–diffusion environment during nanoparticle formation. By carefully tuning flow parameters, the researchers produced Cu₂O nanoparticles with tailored structural features, including high defect density and intrinsic nanoporosity—characteristics that significantly improve the formation of valuable multicarbon (C₂⁺) products during CO₂ electroreduction.

Compared with conventional batch synthesis, the microfluidic approach provides much finer control over nanoparticle growth and morphology. The resulting catalysts exhibited improved selectivity toward multicarbon products, while advanced characterization techniques—including operando X-ray absorption spectroscopy and liquid-cell transmission electron microscopy—provided valuable insights into how the catalysts evolve under operating conditions.

The work further demonstrates that modifying the catalyst surface with polyaromatic films increases C₂⁺ selectivity to 45%, highlighting the combined importance of precise nanomaterial synthesis and surface engineering for developing next-generation catalytic systems.

Although focused on CO₂ electroreduction, this research illustrates a broader principle that lies at the heart of the EVA project: advanced manufacturing approaches can provide unprecedented control over material architecture, enabling the design of functional materials with tailored properties for future technologies. The ability to precisely engineer micro- and nanoscale structures is becoming increasingly important across fields ranging from sustainable energy to biomedical engineering and advanced manufacturing.

Read the publication:

Continuous-Flow Microfluidic Synthesis Enhances C₂⁺ Selectivity for Cu₂O Catalysts

Advanced Science (2026) here: https://zenodo.org/records/21620930