A comprehensive review on zeolite-based mixed matrix membranes for CO/CH separation.

Biogas consisting of carbon dioxide/methane (CO/CH) gas mixtures has emerged as an alternative renewable fuel to natural gas. The presence of CO can decrease the calorific value and generate greenhouse gas. Hence, separating CO from CH is a vital step in enhancing the use of biogas.

Altered zirconium dioxide based photocatalyst for enhancement of organic pollutants degradation: A review.

Heterogeneous advanced oxidation processes are a promising approach for cost-efficient removal of pollutants using semiconductors. Zirconium dioxide (ZrO) is an auspicious material for photocatalytic activity owning to its suitable bandgap, stability, and low cost. However, ZrO suffers from fast recombination rate, and poor light harvesting ability.