Ionothermal synthesis of a three-dimensional zinc phosphate with DFT topology using unstable deep-eutectic solvent as template-delivery agent
authors Liu, L; Kong, Y; Xu, H; Li, JP; Dong, JX; Lin, Z
nationality International
journal MICROPOROUS AND MESOPOROUS MATERIALS
author keywords Zinc phosphate framework; Ionothermal synthesis; Eutectic mixtures; DFT topology
keywords ALUMINOPHOSPHATE MOLECULAR-SIEVES; METAL-ORGANIC FRAMEWORKS; IONIC-LIQUID; COBALT PHOSPHATE; CHOLINE CHLORIDE/UREA; COORDINATION POLYMER; MIXTURES
abstract A three-dimensional zinc phosphate compound with DFT topology, designated as ZnPO4-EU1, has been synthesized by an ionothermal approach from the system HF-ZnO-P2O5-choline chloride-imiclazoliclone. Ethylenediamine, derived from decomposition of the imidazolidone component of the deep-eutectic solvent (DES) itself, is delivered to the synthesis and serves as an appropriate template for ZnPO4-EU1. Experiments in which the synthesis conditions were varied showed that ZnPO4-EU1 may be prepared over a wide molar ratio of P/Zn = 0.55-13.0. Powder X-ray diffraction patterns have been obtained at intervals to track the crystallization process of this material. The experimental data show that Zn-3(PO4)(2). 4H(2)O (a dense phase) was first isolated from the DES after reaction for 1 h. Subsequently, the pure phase of ZnPO4-EU1 was obtained with increasing crystallization time from 12 h to 72 h. The experimental results show that the nucleation and crystallization take place with relatively low levels of solvent degradation, demonstrating that zinc phosphate with a three-dimensional framework can be synthesized by in situ generation of an appropriate template using an unstable DES at high temperatures (150-200 degrees C). (c) 2008 Elsevier Inc. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 1387-1811
year published 2008
volume 115
issue 3
beginning page 624
ending page 628
digital object identifier (doi) 10.1016/j.micromeso.2008.03.005
web of science category Chemistry, Applied; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000259845000049
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