New Examples of Phase Control in the Preparation of Copper Sulfide Nanoparticles and Deposition of Thin Films by AACVD from Bis(piperidinedithiocarbamato)copper(II) Complex

Abstract

Bis(piperidinedithiocarbamato)copper(II) was used as a precursor for the synthesis of copper sulfide nanoparticles in solutions of different compositions derived from: dodecanethiol (DT), oleylamine (OLA) and trioctylphosphine (TOP) which can be viewed as components acting as, solvents, surfactants or ligands. The powder-X-Ray diffraction of the nanoparticles showed predominately roxbyite, and/or djurleite phase based on the solvent mixture used, and covellite or dignite in OLA depending on the temperature. The morphology changed from spherical to hexagonal discs with variation of the solvent from DT to DT/TOP (2:1) mixture. Thin films of copper sulfide were also deposited by the Aerosol Assisted Chemical Vapour Deposition (AACVD). Djurleite was the only phase deposited by AACVD (350, 400 and 450 8C). Cubes, short rods and spherical microstructures were observed in the SEM images, with average size increasing with temperature.

Structural investigations of SnS1−xSexsolid solution synthesized from chalcogeno-carboxylate complexes of organo-tin by colloidal and solvent-less routes

“…The use of single source precursors is often advantageous as it prevents the usage of noxious reagents and provides better control over phase and stoichiometry of thin films and nanomaterials. [27][28][29][30][31][32][33] Unfortunately, the use of single source precursors for the synthesis of SnS 1-x Se x solid solution is not well explored and the only precursors used until the present are benzyl substituted tin chalcogenides. 34,35 The precursors were not suitable to prepare a solid solution due to the use of elemental selenium, and traces of elemental tin were also observed in the final product obtained by the decomposition of these precursors.…”

Copper (II) Heterocyclic Thiosemicarbazone Complexes as Single-Source Precursors for the Preparation of Cu9S5 Nanoparticles: Application in Photocatalytic Degradation of Methylene Blue

“…Amongst metal chalcogenides, copper sulphide, which is a p-type semiconductor with a tuneable band-gap ranging from 1.2 eV to 2.0 eV, has become highly sought after due to its wide range of stoichiometric compositions and phases. These phases vary from the copper-rich chalcocite phase (Cu 2 S) to the copper-deficient phases (covellite (CuS), anilite (Cu 1.75 S), digenite (Cu 1.8 S), and djurleite (Cu 1.96 S)) [5][6][7][8][9]. Copper-containing nanomaterials have been shown to possess potential applications in solar cells [5], photocatalysis [6], supercapacitors [10], nanometre-scale switches, and high-capacity cathode materials in lithium secondary batteries, superconductor, thermoelectric cooling material, and solar-energy absorption [11,12].…”

“…Copper-containing nanomaterials have been shown to possess potential applications in solar cells [5], photocatalysis [6], supercapacitors [10], nanometre-scale switches, and high-capacity cathode materials in lithium secondary batteries, superconductor, thermoelectric cooling material, and solar-energy absorption [11,12]. These varied applications of copper sulphide semiconductor materials stem from their unique optical, electronic, and photocatalytic properties that are influenced by their morphology, their stoichiometric composition, and their crystalline phases, which are tuneable by various reaction parameters such as their capping agent, the nature of their precursor, and their reaction temperature [7][8][9]13]. Capping agents stabilize the surface of copper sulphide to prevent agglomeration and to obtain monodisperse nanoparticles (NPs) [14,15].…”

“…Among these synthetic routes, the thermolysis of single-source precursors has been shown to yield high-quality nanoparticles due to the presence of the preformed metal-sulphur bond in the molecule, which can control the chemical composition and physical properties of the as-prepared metal chalcogenide NPs [15,[20][21][22][23]. This method regulates the particle size and shape by varying reaction conditions such as temperature, precursor concentration, and capping group [7,8,24]. The choice of precursors plays an important role on the morphology and phase of copper sulphide NPs [16].…”

Effect of cationic disorder on the energy generation and energy storage applications of NixCo3−xS4 thiospinel

“…The use of single molecular precursors is oen known to give superior results in nanomaterials synthesis as it makes use of preformed bonds with the decomposition product easily predicted. [29][30][31][32][33] Furthermore, they are equally suitable for the synthesis of nanomaterials and deposition of thin lms. [34][35][36][37][38] Herein, we have designed a facile one-pot synthesis of Ni x -Co 3Àx S 4 thiospinel using dithiocarbamate complexes of nickel and cobalt as single molecular precursors by thermolyzing the stoichiometric amounts of the complexes in a hot primary amine.…”