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Hybridization of a Metal-Organic Framework with a Two-Dimensional Metal Oxide Nanosheet: Optimization of Functionality and Stability

Title
Hybridization of a Metal-Organic Framework with a Two-Dimensional Metal Oxide Nanosheet: Optimization of Functionality and Stability
Authors
Jo, Yun KyungKim, MinhoJin, XiaoyanKim, In YoungLim, JoohyunLee, Nam-SukHwang, Young KyuChang, Jong-SanKim, HyungjunHwang, Seong-Ju
Ewha Authors
황성주
SCOPUS Author ID
황성주scopus
Issue Date
2017
Journal Title
CHEMISTRY OF MATERIALS
ISSN
0897-4756JCR Link1520-5002JCR Link
Citation
vol. 29, no. 3, pp. 1028 - 1035
Publisher
AMER CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
An effective way to improve the functionalities and stabilities of metal organic frameworks (MOFs) is developed by employing exfoliated metal oxide 2D nanosheets as matrix for immobilization. Crystal growth of zeolitic imidazolate framework 8 (ZIF-8) nanocrystals on the surface of layered titanate nanosheets yields intimately coupled nanohybrids of ZIF-8-layered titanate. The resulting nanohybrids show much greater surface areas and larger pore volumes than do the pristine ZIF-8, leading to the remarkable improvement of the CO2 adsorption ability of MOF upon hybridization. Of prime importance is that the thermal- and hydrostabilities of ZIF-8 are significantly enhanced by a strong chemical interaction with the robust titanate nanosheet. A strong interfacial interaction between ZIF-8 and the layered titanate is verified by molecular mechanics simulations and spectroscopic analysis. The universal applicability of the present strategy for the coupling of MOFs and metal oxide nanosheets is substantiated by the stabilization of Ti-MOF-NH2 via the immobilization on exfoliated V2O5 nanosheets. The present study underscores that hybridization with metal oxide 2D nanosheets provides an efficient and universal synthetic route to novel MOF-based hybrid materials with enhanced gas adsorptivity and stability.
DOI
10.1021/acs.chemmater.6b03788
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자연과학대학 > 화학·나노과학전공 > Journal papers
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