Development of hierarchical UiO-66/ZIF-8/ZIF-67 hybrid composites for enhanced CO₂ adsorption at varying temperatures and pressures

Ouzrour, Zineb and Akaya, Hicham and Lamnini, Soukaina and Balázsi, Katalin and Czigány, Zsolt and Altamash, Tausif and Jacquemin, Johan (2026) Development of hierarchical UiO-66/ZIF-8/ZIF-67 hybrid composites for enhanced CO₂ adsorption at varying temperatures and pressures. JOURNAL OF CO2 UTILIZATION, 110. No.-103516. ISSN 2212-9820

Preview	Text Lamnini_Co2utilization.pdf - Published Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (9MB) | Preview
Preview	Text (Graphical abstract) 1-s2.0-S2212982026002052-ga1.jpg - Additional Metadata Download (16kB) | Preview

Abstract

We developed a simple method to create hybrid metal-organic framework (MOF) composites to improve CO2 adsorption performance: ZIF-8&ZIF-67 (ZZ), UiO-66&ZIF-8 (UZ), and UiO-66&ZIF-8&ZIF-67 (ZUZ). We conducted structural and morphological characterization using TEM, XRD, FTIR, and EDS to confirm the successful formation of the composites. N2 sorption analysis showed a significant increase in BET surface area. The surface area increased from 582.84 m2.g−1 for neat UiO-66–1672.52 m2.g−1 for UZ, with ZUZ also showing a high surface area of 1169.79 m2.g−1. We carried out CO2 adsorption measurements at 273, 303, and 313 K under different pressures. At 303 K, ZUZ showed higher CO2 uptake, reaching 1.5 mmol/g at 1 bar and 7.0 mmol/g at 10 bars. In contrast, neat UiO-66 only reached 1.2 mmol/g and 3.2 mmol/g under the same conditions. These results highlight how structural hybridization can change porosity and improve CO2 adsorption performance.

Actions (login required)

Edit Item