Preparation and characterization of the CuCr2O4 nanostructures via a new simple route

Abstract

Pure copper chromite (CuCr 2 O 4 ) nanostructures were prepared via a new simple route. Nanostructures were synthesized by heat treatment in air at 900°C for 5 h, using powder, which was obtained by a solvent-free solidstate reaction (using ball milling) from 1:2 molar ratio of [Cu(en) 2 (H 2 O) 2 ]Cl 2 and [Cr(en) 3 ]Cl 3 Á3H 2 O as novel precursors. The effect of ball milling duration and calcination temperature on the morphology and size of copper chromite was investigated. It was found that these parameters have significant influence on the morphology and size of the CuCr 2 O 4 . The as-synthesized CuCr 2 O 4 nanostructures were characterized by means of several techniques such as X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, energy dispersive X-ray microanalysis, transmission electron microscopy and UVVis diffuse reflectance spectroscopy. Furthermore, the photocatalytic degradation of anionic dyes such as eosin Y, erythrosine and phenol red as water pollutants was performed to study the catalytic properties of as-prepared nanostructures.

Novel dendrite-like CuCr2O4 photocatalyst prepared by a simple route in order to remove of Azo Dye in textile and dyeing wastewater

“…In this spectrum, the bands at 500 and 622 cm -1 are ascribed to the Cr 2 O 4 group in the copper chromite which confirms the preparation of copper chromite. The peak located at 3435 cm -1 and a weak peak at 1631 cm -1 are attributable to the m(OH) stretching and bending vibrations, respectively, which indicates the presence of water molecules linked to copper chromite product [5].…”

“…The solution was stirred for about 1 h then placed the flask in an ice-bath for 1 h to complete crystallization. A blue precipitate was isolated, washed several times with distilled water and ethanol and dried at room temperature [5].…”

“…Copper chromite (CuCr 2 O 4 ) with spinel structure is one of the most effective and attractive transition metals oxides that has been studied widely due to its diverse applications in hydrogenation, oxidation reaction, photocatalytic H 2 production, burning rate catalyst for solid propellants and removal of aqueous organic waste [1][2][3][4][5]. So far, various methods such as ball milling [5], thermal decomposition [6], hydrothermal [7], sol-gel [8], and co-precipitation [9] have been explored to prepare CuCr 2 O 4 .…”

“…So far, various methods such as ball milling [5], thermal decomposition [6], hydrothermal [7], sol-gel [8], and co-precipitation [9] have been explored to prepare CuCr 2 O 4 . It is good to know that particle size and morphology have a main effect on the properties of the nanostructures.…”

Nanocrystalline barium stannate: facile morphology-controlled preparation, characterization and investigation of optical and photocatalytic properties

“…So far, reverse micelle, solid state, coprecipitation, combustion and solgel approach [11][12][13][14][15] have been reported to synthesize barium stannate. Since shape, size and size distribution have key and considerable impact on the characteristics and applications of the nanomaterials, several procedures have been reporting on particle size and shape controlled preparation of nanomaterials [16][17][18][19][20][21][22][23][24].…”