Defect-induced ripening of zeolitic-imidazolate framework ZIF-8 and its implication to vapor-phase membrane synthesis

Hyuk Taek Kwon; Hae-Kwon Jeong; Albert S Lee; He Seong An; Taehee Lee; Eunhee Jang; Jong Suk Lee; Jungkyu Choi

doi:10.1039/c6cc05433a

Defect-induced ripening of zeolitic-imidazolate framework ZIF-8 and its implication to vapor-phase membrane synthesis

Chem Commun (Camb). 2016 Sep 22;52(78):11669-11672. doi: 10.1039/c6cc05433a.

Authors

Hyuk Taek Kwon¹, Hae-Kwon Jeong², Albert S Lee³, He Seong An⁴, Taehee Lee⁵, Eunhee Jang⁵, Jong Suk Lee⁶, Jungkyu Choi⁷

Affiliations

¹ Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, USA. [email protected].
² Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, USA. [email protected] and Department of Materials Science and Engineering, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, USA.
³ Materials Architecturing Research Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 136-791, Republic of Korea.
⁴ Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 136-791, Republic of Korea and Department of Chemical & Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea.
⁵ Department of Chemical & Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea.
⁶ Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 121-742, Republic of Korea.
⁷ Department of Chemical & Biological Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea and Green School, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Republic of Korea.

PMID: 27709203
DOI: 10.1039/c6cc05433a

Abstract

We report for the first time that ZIF-8 crystals undergo an Ostwald-ripening-like process without degradation in the presence of a ligand vapor. The ripening process is dependent on the defect density of the crystals: the more defective the more amenable to the ripening. The process was adapted to synthesize ultra-thin ZIF-8 membranes by vapor-phase secondary growth.