Issue 86, 2023

pH-Dependent phosphate separation using a tripodal hexaurea receptor

Abstract

We demonstrate that a tripodal hexaurea receptor can selectively bind PO43− anions via 12 hydrogen bonds with up to 3.8 × 106 M−1 binding affinity in DMSO, which is 38-fold stronger than SO42−. This receptor facilitates the extraction of PO43− from strongly basic aqueous solutions into chloroform using liquid–liquid extraction, followed by its release as the H2PO4 anion into an acidic solution. This pH-dependent phosphate extraction successfully enables selective separation of phosphate and sulfate anions.

Graphical abstract: pH-Dependent phosphate separation using a tripodal hexaurea receptor

Supplementary files

Article information

Article type
Communication
Submitted
24 8 2023
Accepted
28 9 2023
First published
28 9 2023

Chem. Commun., 2023,59, 12923-12926

pH-Dependent phosphate separation using a tripodal hexaurea receptor

Z. Sun, S. Chen, L. Liang, W. Zhao, X. Yang and B. Wu, Chem. Commun., 2023, 59, 12923 DOI: 10.1039/D3CC04122K

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