Manganese-based materials are widely applied as catalysts
for catalytic
removal of gaseous pollutants due to their low cost and excellent
redox performance. However, existing challenges such as unsatisfactory
activity and stability hinder the application of manganese-based catalysts.
Confining manganese-based materials into specific regions has the
potential to influence intermolecular arrangement and mass diffusion
and lower the activation energy barrier, thereby enhancing reaction
stability and the catalyst’s activity. In this critical review,
we briefly summarize the common reported nanoconfined manganese-based
analogues for gaseous pollutant elimination including nitrogen oxides
(NO
x
) and volatile organic compounds (VOCs).
Details of the commonly reported hosts for confined catalysts and
their impact on catalytic behavior and an in-depth discussion of the
related mechanism are included. Through this critical review, we aim
to raise the research attention on using confined catalysis as a fundamental
guide or even tool to improve the catalytic performance of gaseous
pollutant elimination.