Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 10, Pages 8685-8691Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b18836
Keywords
metallocage; CO2 capture; porous material; self-assembly; strong binding center
Funding
- National Research Foundation of Korea [NRF-2015R1D1A1A02061738]
- Ulsan National Institute of Science and Technology
- R&D Convergence Program of Ministry of Science, ICT and Future Planning
- National Research Council of Science & Technology of Korea [CRC-14-1-KRICT]
- Pohang Accelerator Laboratory [2016-1st-2D-021]
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Coordination-driven assembly has been widely successful in the synthesis of metallocages and used for many applications, such as catalysis. However, studies on CO2 adsorption with metallocages have been rarely conducted, compared to other well-known cage-type materials, such as porous organic cages. In this study, a rational choice of ligand and metal led to the synthesis of a Zr6L3-type metallocage, exhibiting exceptional CO2 adsorption properties. CO2 adsorption experiments revealed that the metallocage shows highly selective adsorption of CO2 over N-2 with high CO2 binding energy. Density functional theory calculations uncovered the origin of this exceptional affinity for CO2 over N-2.
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