synthesis, characterization and adsorption capability of cdo microstructure for congo red from aqueous solution

نویسندگان

a. tadjarodi

h. kerdari

m. imani

چکیده

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.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Synthesis, Characterization and Adsorption Capability of CdO Microstructure for Congo Red from Aqueous Solution

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 org...

متن کامل

Adsorption properties of nickel oxide nanoparticles for removal of Congo Red from aqueous solution

The effective removal of dyes from aqueous wastewaters is among the most important issues formany industrialized countries. Removal of Congo Red (CR) dye from aqueous solutions was studiedusing nickel oxide nanoparticles. The operating variables studied were initial pH of solution,adsorbents dosage, temperature and contact time. The morphological information of nickel oxidenanoparticles were ch...

متن کامل

The Kinetic and Thermodynamic Study for Decolorization of Congo red from Aqueous Solution Using Electrocoagulation Process

The removal of color from synthetic wastewater containing Congo red was experimentally investigated using electrocoagulation process. The effects of operational parameters such as current density, electrolysis time, electrolyte concentration, electrode distance, initial dye concentration, initial pH and temperature on color removal efficiency were investigated in this study. The tentative resul...

متن کامل

adsorption properties of nickel oxide nanoparticles for removal of congo red from aqueous solution

the effective removal of dyes from aqueous wastewaters is among the most important issues formany industrialized countries. removal of congo red (cr) dye from aqueous solutions was studiedusing nickel oxide nanoparticles. the operating variables studied were initial ph of solution,adsorbents dosage, temperature and contact time. the morphological information of nickel oxidenanoparticles were ch...

متن کامل

Removal of Congo Red from Aqueous Solution by Anion Exchange Membrane (EBTAC): Adsorption Kinetics and Themodynamics

The adsorption behavior of anionic dye congo red (CR) from aqueous solutions using an anion exchange membrane (EBTAC) has been investigated at room temperature. The effect of several factors including contact time, membrane dosage, ionic strength and temperature were studied. Kinetic models, namely pseudo-first-order and pseudo-second-order, liquid film diffusion and Elovich models as well as B...

متن کامل

A Kinetic Study on Adsorption of Congo Red from Aqueous Solution by ZnO-ZnFe2O4-polypyrrole Magnetic Nanocomposite

In this work, magnetically separable ZnO-ZnFe2O4-PPy nanocomposite as an efficient adsorbent was synthesized by two steps. At first, zinc oxide (ZnO) and ZnFe2O4 nanoparticles were synthesized using simple and facile precipitation method. Then, ZnO-ZnFe2O4 mixed oxide was modified by polypyrrole (PPy). The adsorbent was character...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
journal of nanostructures

ناشر: university of kashan

ISSN 2251-7871

دوره 2

شماره 1 2012

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023