Nano-architecture cobalt (III) supramolecular coordination polymer based on host-guest recognition as an effective catalyst for phenolic degradation and chemical sensor

摘要

{[Co(CN)(6)(Me3Sn)(3)(H2O)]center dot(qox)} host-guest supramolecular coordination polymer, SCP1, is synthesized by adding K-3[Co(CN)(6)], quinoxaline (qox) and Me3SnCl using the self-assembly method at ambient conditions. X-ray diffraction (XRD) of single crystal of SCP1 indicates that the structure consists of [Co(CN)(6)(H2O)] building blocks which construct the 3D-host network connected by the Me3Sn+ cations and accommodate qox guest molecule. The nanosized particles of {[Co (CN)(6)(Me3Sn)(3)(H2O)]center dot(qox)}; SCP1() are obtained by sono-chemical method while the morphology was examined by powder X-ray diffraction (PXRD) and transition electron microscopy (TEM). The fluorescence property of SCP1() has been examined which exhibits high luminescent selective sensory towards nitrobenzene, Hg+1, Fe3+ and Pb2+ ions. SCP1 and SCP1() are tested as heterogeneous catalysts for degradation of phenol under UV- and ultrasonic radiation. The catalysts cause efficient degradation of phenol which was enhanced by radiation. The mechanism of degradation was suggested and discussed in detail. (C) 2020 Elsevier B.V. All rights reserved.