Abstract
Polyaniline-encapsulated metal-organic frameworks (MOFs; MIL-101, Cr-benzenedicarboxylate) were prepared via a ship-in-bottle strategy and applied in liquid phase adsorptions. The modified MIL-101s showed record-high adsorptions for both basic and neutral nitrogen-containing compounds (NCCs) from liquid model fuel. For example, the maximum adsorption capacities (Q o ) of the protonated polyaniline (pANI)@MIL-101 for the basic quinoline and neutral indole from n-octane were 556 and 602 mg/g, respectively. The plausible adsorption mechanisms such as hydrogen bonding, acid-base interaction, and cation-π interaction were proposed to explain the extraordinary adsorptions of the studied adsorbates. Moreover, the adsorbents could be recycled via a simple approach and reused in adsorptions without noticeable decrease in performances. Therefore, the pANI-encapsulated MOFs could be recommended as a new type of adsorbents for very efficient removal of both basic and neutral NCCs from liquid fuel.
| Original language | English |
|---|---|
| Pages (from-to) | 35639-35646 |
| Number of pages | 8 |
| Journal | ACS applied materials & interfaces |
| Volume | 10 |
| Issue number | 41 |
| DOIs | |
| State | Published - 17 Oct 2018 |
Keywords
- adsorption
- denitrogenation
- fuel
- metal-organic framework
- nitrogen-containing compounds
- polyaniline
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