title: Synthesis and characterization of cadmium selenide nanoparticles loaded on activated carbon and its efficient application for removal of muroxide from aqueous solution.
abstract: In the first, Cadmium selenide Nanoparticle loaded on activated carbon (CdSe-NP-AC) has been synthesized and characterized by different techniques including XRD and SEM. Then, this new adsorbent successfully has been applied for the removal of muroxide (MO) from aqueous solution in batch studies, while the effect of various experimental parameters like initial pH (pH(0)), contact time, amount of (CdSe-NP-AC) and initial MO concentration (C(0)) on its removal percentage was examined by one at a time optimization method. It was found following optimization of variable, the adsorption of MO onto (CdSe-NP-AC) followed pseudo-second-order kinetics and show Tempkin and Langmuir models for interpretation of experimental data. It was observed that by increasing the temperature the removal percentage was improved and the positive change in entropy (ΔS°) and heat of adsorption (ΔH°) show the endothermic nature of process, while the high negative value in Gibbs free energy change (ΔG°) indicates the feasible nature of adsorption process.
authors: Chemistry Department Yasouj University, Yasouj, Iran. m_ghaedi@mail.yu.ac.ir
authors: M
authors: M
authors: Ghaedi
authors: S Zamani
authors: SZ
authors: Amirabad
authors: F
authors: F
authors: Marahel
authors: S
authors: S
authors: Nasiri Kokhdan
authors: R
authors: R
authors: Sahraei
authors: M
authors: M
authors: Nosrati
authors: A
authors: A
authors: Daneshfar
mesh_terms: D000327:Adsorption; D019187:Cadmium Compounds / Q000737:chemistry*; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000302:isolation & purification*; D009114:Murexide / Q000302:isolation & purification*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D018036:Selenium Compounds / Q000737:chemistry*; D013816:Thermodynamics; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods
chemical_list: D019187:Cadmium Compounds; D004396:Coloring Agents; D018036:Selenium Compounds; D014874:Water Pollutants, Chemical; D014867:Water; D002606:Charcoal; D009114:Murexide; C058667:cadmium selenide