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Salts Induced Formation of Hierarchical Porous ZIF‐8 and Their Applications for CO 2 Sorption and Hydrogen Generation via NaBH 4 Hydrolysis
Author(s) -
Abdelhamid Hani Nasser
Publication year - 2020
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.202000031
Subject(s) - sorption , sodium borohydride , catalysis , chemistry , hydrolysis , adsorption , imidazolate , zeolitic imidazolate framework , inorganic chemistry , hydride , metal organic framework , chemical engineering , hydroxide , hydrogen , organic chemistry , engineering
Despite the great potential of two different pore regimes (hierarchical porous (HP) structure), HP‐zeolitic imidazolate frameworks‐8 (HPZIF‐8) can be efficient catalysts for hydrogen generation via hydride hydrolysis, and as adsorbents for CO 2 gas adsorption. Herein, HPZIF‐8, and leaf‐like ZIF (ZIF‐L) are synthesized via a simple and environmentally friendly procedure using layered hydroxide nitrate of zinc (Z 5 HN) as a metal source and simple inorganic salt as a modulator. Z 5 HN nanosheets undergo topotactic transformation to simonkolleite (Zn 5 (OH) 8 Cl 2 ·H 2 O) that can be converted to the pure phase of HPZIF‐8. The concentration of the salts tunes the textural properties of the final product. Applications of HPZIF‐8 and ZIF‐L for CO 2 sorption exhibit excellent adsorption properties with increases of 25% due to the presence of cations in the frameworks. ZIF‐8 shows exceptional high catalytic activity for hydrogen generation via the hydrolysis of sodium borohydride. The simple synthesis of ZIF‐8 as well as their good performance as adsorbent and catalyst ensure the potential for industrial and commercial uses.