Author/Authors :
Kerdari ، H نويسنده b Department of Chemistry, Saveh Branch, Islamic Azad University, Saveh, Iran , , Tadjarodi، A نويسنده Research Laboratory of Inorganic Materials Synthesis, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran , , Imani، M نويسنده Research Laboratory of Inorganic Materials Synthesis, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran ,
Abstract :
Cadmium oxide rhombus-shaped nanostructure was synthesized using
hydrothermal process followed by heating treatment. Clearly, X-ray
diffraction pattern demonstrated the formation of CdO crystalline
phase. Scanning electron microscopy (SEM) showed that the obtained
rhombus-like structure is composed of nanoparticles with the average
size of 29 nm. In addition, we evaluated adsorption of organic dye i.e.
Congo red from water using the prepared CdO rhombus like
microstructure. UV-visible absorption spectroscopy was used to record
the adsorption behavior. It was found that the removal process is
performed via electrostatic absorption mechanism. The maximum
adsorption capacity of CdO rhombus structures (0.01 g) for Congo Red
(CR) in the concentration range (5-50 mg L
-1
) studied, as calculated
from the Langmuir isotherm model at 25 ?C and neutral pH, was found
to be 41.20 mg g
?1
.
