The novel and economical way to synthesize CuS nanomaterial of different morphologies by aqueous medium employing microwaves irradiation

Muhammad Nafees,Saima Idrees,Salamat Ali,Khalid Rasheed

doi:10.1007/s13204-011-0050-z

Abstract

CuS nano/submicro materials with different morphologies were synthesized with spherical, tubular, leaf-like and strip type structures in a simple aqueous system under microwave irradiation and sunlight and employing Cu (CH3COO)2, CuSO4·5H2O, CuCl2, and as copper source and H2NCSNH2, Na2S2O3·5H2O and CH3CSNH2 as sulfur sources. The starting materials were used without assistance of any surfactant or template. An X-ray powder diffraction pattern confirms that the product was CuS with hexagonal phase. Scanning electron microscopy was used to observe the morphologies of the product. Different Phase transitions in CuS with respect to temperature are studied by DSC/TGA. The dependence of morphologies of product on different experimental conditions was also discussed.

Highlights

Since the past few years, researchers are showing inclusive concentration on the study of the appropriate control overK
As a useful mineral, have outstanding potential optoelectronic material. It is a potential candidate for solar cell application, IR detectors, sensors, electrochemistry cells, and catalysts (Yang et al 1997; Ahmadi et al 1996; Lindroos et al 2000; Erokhina et al 2003; Podder et al 2005; Setkus et al 2001; Blachnik and Muller 2000; Rodriguez et al 2000; Huang et al 2001), There are many ways adopted to the synthesize copper sulfides (CuS), such as solid-state reaction (Wang et al 2006), hydrothermal
In 2nd and 3rd samples CuCl2 and Na2S2O3Á5H2O were used as copper and sulfur sources; aqueous solution with 2:3 molar ratio were prepared for copper and sulfur sources, respectively; dropwise addition under stirring condition was done as in sample 1 and mixed green solution was treated in two different environments, employing microwave irradiation (180 W, 30 min) and under sunlight; products were collected in the form of black ppt and washed again and again with distilled water and ethanol

Summary

Introduction

Since the past few years, researchers are showing inclusive concentration on the study of the appropriate control over. Appl Nanosci (2012) 2:157–162 synthesis (Tezuka et al 2007; Jiang et al 2005) sonochemical treatment (Xu et al 2006), and photochemical deposition method (Yang et al 1997) In this current research, micro- and nano-sized CuS material with different morphologies such as assemblies of nanoparticles into solid spheres, leaf-like and strip-type structures were successfully synthesized from different copper and sulfur sources in aqueous medium by exposure of microwave irradiation and under sunlight. In 2nd and 3rd samples CuCl2 and Na2S2O3Á5H2O were used as copper and sulfur sources; aqueous solution with 2:3 molar ratio were prepared for copper and sulfur sources, respectively; dropwise addition under stirring condition was done as in sample 1 and mixed green solution was treated in two different environments, employing microwave irradiation (180 W, 30 min) and under sunlight (max day temp *38°C); products were collected in the form of black ppt and washed again and again with distilled water and ethanol. By reaction of copper oxide, oxygen and releasing SO2, oxysulfates (CuSO4, and CuOÁCuSO4) are formed

Decomposition of oxysulfates gives CuO

Conclusion