Hydrothermal preparation of hierarchical ZIF-L nanostructures for enhanced CO2 capture

Bing Ding, Xianbiao Wang, Yongfei Xu, Shaojie Feng, Yi Ding, Yang Pan, Weifan Xu, Huanting Wang

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15 Citations (Scopus)

Abstract

A zeolitic imidazolate framework (ZIF-L) with hierarchical morphology was synthesized through hydrothermal method. The hierarchical product consists of ZIF-L leaves with length of several micrometers, width of 1 ∼ 2 μm and thickness of ∼300 nm cross connected symmetrically. It was found that the hydrothermal temperature is crucial for the formation of such hierarchical nanostructure. The formation mechanism was investigated to be a secondary crystal growth process. The hierarchical ZIF-L has larger surface area compared with the two-dimensional (2D) ZIF-L leaves. Subsequently, the hierarchical ZIF-L exhibited enhanced CO2 adsorption capacity (1.56 mmol·g−1) as compared with that of the reported two-dimensional ZIF-L leaves (0.94 mmol·g−1). This work not only reveals a new strategy for the formation of hierarchical ZIF-L nanostructures, but also supplies a potential material for CO2 capture.

Original languageEnglish
Pages (from-to)38-43
Number of pages6
JournalJournal of Colloid and Interface Science
Volume519
DOIs
Publication statusPublished - 1 Jun 2018

Keywords

  • CO capture
  • Hierarchical
  • Hydrothermal
  • ZIF-L

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