Mesoporous silica based copper catalytic materials for potential deNOx application: Synthesis and characterization

In this work hybrid catalytic porous materials were prepared and investigated with respect to their structural and functional properties. The development of the catalytic systems was performed through a modified polyol route utilizing two mesoporous siliceous templates, MCM-41 & MCF as substrates, whereas copper was used as the active component. Microwave irradiation was applied as heating source and the size of as-formed NPs along with their dispersion on selected porous hosts were effectively controlled through fine tuning of the reaction parameters. Characterization results reveal the successful preparation of Cu NPs of approximately 16 nm diameter in both studied composites. DeNOx catalytic activity results performed under stoichiometric conditions demonstrate an enhanced efficiency reaching 37-42% maximum NO conversion by CO at moderate temperatures (similar to 400 degrees C). However, a more detailed study is required for an in depth comprehension of the synthetic parameters that will enable the production of supported Cu NPs with desirable particle size distribution and enhanced catalytic activity. (C) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conferences & Exhibition on Nanotechnologies, Organic Electronics & Nanomedicine - NANOTEXNOLOGY 2020.

Automated summary

This work focuses on the preparation and investigation of hybrid catalytic porous materials, specifically studying their structural and functional properties. By utilizing a modified polyol route and two mesoporous siliceous templates, MCM-41 and MCF, copper nanoparticles (Cu NPs) were successfully synthesized and their size and dispersion on porous hosts were controlled through microwave irradiation. The characterization results confirmed the preparation of Cu NPs with an average diameter of approximately 16 nm in both composites. The catalytic activity of the materials showed enhanced efficiency in NO conversion to CO under stoichiometric conditions at moderate temperatures (around 400 degrees C).