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Copper(I) tertiary phosphine xanthate complexes as single source precursors for copper sulfide and their application in OER

Abstract

Three isomeric bis-(triphenylphosphine)copper(I) complexes comprising of xanthate ligands derived from 2- (1), 3- (2), and 4-methanol pyridine (3) have been synthesized and characterized using microanalyses, IR, multinuclear NMR, UV-Vis. and fluorescence spectroscopic methods as well as single crystal X-ray diffraction technique. The single crystal X-ray diffraction indicated that the immediate geometry around Cu(I) in the complexes is distorted tetrahedral which is being satisfied by the two sulfur centers of xanthate ligands and two phosphorus centers of two PPh3 moiety. Additionally, thermogravimetric analyses (TGA) under inert atmosphere have been performed which indicated that the complexes decompose to copper sulfide. The complexes have been decomposed under inert atmosphere to obtain copper sulfides which have been characterized by PXRD and SEM. Additionally their electrocatalytic properties have been investigated in oxygen evolution reaction (OER). The OER results indicate that the copper sulfide (CuxS-3) obtained from 3 showed best activity with onset potential of 475 mV.

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Publication details

The article was received on 07 Aug 2018, accepted on 09 Oct 2018 and first published on 10 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ03992E
Citation: New J. Chem., 2018, Accepted Manuscript
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    Copper(I) tertiary phosphine xanthate complexes as single source precursors for copper sulfide and their application in OER

    A. SINGH, M. Trivedi, P. Singh, G. Kociok-Kohn, U. P. Azad, A. K. Singh and A. Kumar, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ03992E

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