Proof of concept for CUK family metal-organic frameworks as environmentally-friendly adsorbents for benzene vapor
- Authors
- Anand, Bhaskar; Szulejko, Jan.E.; Kim, Ki-Hyun; Younis, Sherif A.
- Issue Date
- Sep-2021
- Publisher
- Elsevier Ltd
- Keywords
- Benzene adsorption; Breakthrough analysis; CUK coordination framework; Kinetic studies; Partition coefficient; Performance comparison
- Citation
- Environmental Pollution, v.285, pp.1 - 14
- Indexed
- SCIE
SCOPUS
- Journal Title
- Environmental Pollution
- Volume
- 285
- Start Page
- 1
- End Page
- 14
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/943
- DOI
- 10.1016/j.envpol.2021.117491
- ISSN
- 0269-7491
- Abstract
- The utility of metal-organic frameworks (MOFs) such as the CUK family (CUK – Cambridge University–KRICT) has been explored intensively for adsorption/separation of airborne volatile organic compounds (VOCs). In this article, three M-CUK analogs (M = Mg, Co, or Ni) were synthesized hydrothermally under similar conditions to assess the effects of their isostructural properties and metal centers on adsorption of benzene vapor (0.05–1 Pa). A list of performance metrics (e.g., breakthrough volume (BTV) and partition coefficient (PC)) were used to assess the role of the metal type (in M-CUK-1s) in the adsorption of VOCs. Specifically, Co-CUK-1 (average pore size of 8.98 nm) showed 2–3 times greater performance (e.g., in terms of 10% BTV (2012 L atm g⁻¹) and PC (6 mol kg⁻¹Pa⁻¹)) over other analogs when exposed up to 0.05 Pa benzene vapor. The superiority of mesoporous Co-CUK-1 (e.g., enhanced adsorption diffusion mechanism through favorable metal-π and π- π interactions) can be attributed to the presence of cobalt metal centers (e.g., in reference to Mg- or Ni-CUK-1)
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