CuS Nanorods Research Articles

Synthesis of Twinned CuS Nanorods by a Simple Wet Chemical Method

The observation of twinned structures in one-dimensional nanomaterials is very rare. In this paper, we focused our attention on the synthesis of CuS twinned nanorods by a simple wet chemical method, the in situ source−template−interface reaction (ISTIR) route, at low reaction temperature (105 °C). The possible mechanism for the growth of CuS nanorods and nanoparticles was also investigated. The twinned structure of nanorods is discussed in terms of defects introduced during the growth of nanorods. The products have been characterized by X-ray diffraction, energy dispersive X-ray analysis, X-ray photoelectron spectroscopy, and transmission electron spectroscopy analysis. The photoluminescence spectra of twinned nanorods show poor property in comparison to defect-free nanorods.

Synthesis and characterization of crystalline CuS nanorods prepared via a room temperature one-step, solid-state route

We described a novel and simple one-step, solid-state route for the synthesis of crystalline CuS nanorods using surfactant, C 18H 37(CH 2CH 2O) 10H, as shape controller. The diameters of the as-prepared CuS nanorods are in the range of 10–60 nm and lengths are up to 5 μm. The crystallinity, purity, morphology, structural features and UV–vis optical absorption spectra of the as-prepared nanorods were characterized by X-ray diffraction, transmission electron microscopy, selected area electron diffraction, high-resolution transmission electron microscopy, optical absorption spectra and X-ray photoelectron spectra. The role of surfactant, C 18H 37(CH 2CH 2O) 10H, in the formation of CuS nanorods has been discussed. The result indicated that the surfactant played a key role for the formation of CuS nanorods.

Low-temperature synthesis of CuS nanorods by simple wet chemical method

CuS nanorods of length 60–100 nm and 15 nm in diameter have been synthesized by simple wet chemical method at 105 °C using CuCl 2·2H 2O as Cu-precursor, CS 2 as S-source and ethylenediamine as the attacking reagent. The plausible reaction mechanism has been proposed and the effect of reaction temperature on morphology has been discussed. X-ray diffraction (XRD) pattern suggests the formation of hexagonal phase CuS. The morphology of the products has been studied by transmission electron microscope (TEM) analysis. A detailed optical study has also been done.

A simple synthesis and characterization of CuS nanocrystals

Water-soluble CuS nanocrystals and nanorods were prepared by reacting copper acetate with thioacetamide in the presence of different surfactants and capping agents. The size of the nanocrystals varied from 3–20 nm depending on the reaction parameters such as concentration, temperature, solvent and the capping agents. The formation of nanocrystals was studied by using UV-visible absorption spectroscopy.

Oriented Attachment of Crystalline CuS Nanorods

Abstract Oriented attachment growth was observed in CuS nanostructure for the first time. TEM and HRTEM were used to investigate the connections between the crystal pathway and microstructure of the attached CuS nanostructures.

Template-free synthesis of CuS nanorods with a simple aqueous reaction at ambient conditions

CuS nanorods with an average diameter of 100 nm were successfully prepared at ambient conditions via a novel template-free route in a simple system containing CuSO4, Na2S2O3, thioglycerol and H2O. Thioglycerol was found to dramatically catalyze the hydrolysis of Na2S2O3 and the formation of CuS nanorods.

Synthesis of CuS nanorods by one-step reaction

A one-step, solid-state reaction route was developed to synthesize copper sulfide (CuS) nanorods via grinding Cu(NO 3) 2·3H 2O and Na 2S·9H 2O in existence of ethylenediamine tetraacetic acid disodium salt (Na 2EDTA·2H 2O) at ambient temperature. The as-prepared CuS nanorods have diameters of 5∼7 nm, lengths up to 40∼70 nm. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) were used to characterize the obtained product. A possible reaction mechanism was discussed at the end of this article.

Fabrication of CuS nanocrystals with various morphologies in the presence of a nonionic surfactant

Shape-controlled synthesis of CuS nanorods, nanoflakes, and flowerlike structures has been achieved simply in the presence of a nonionic surfactant polyethylene glycol (PEG20000) by adjusting hydrothermal temperature. The as-synthesized CuS nanocrystals were investigated by various techniques of XRD, TEM, SEM, and UV–vis spectra. The electron diffraction pattern indicated that the CuS nanoflakes were single crystals. In the process, the temperature and the surfactant PEG20000 were found to play important roles in determining the morphology of CuS nanocrystals.

A Novel in situ Template-controlled Route to CuS Nanorods via Transition Metal Liquid Crystals

Abstract A novel and simple route, called in situ template-controlled (ISTC) method, has been developed to fabricate low-dimensional CuS nanorods by firstly taking advantages of TMLC’s semi-ordered arrangement.