STUDYING THE ADSORPTION PROCESS OF RIBOFLAVIN ON SILVER-DEPOSITED FE3O4 NANOPARTICLES

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AKHOND MORTEZA; ABSALAN GHODRATOLLAH; RAFATMAH ELMIRA

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Seminar Paper

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Seminar: IRANIAN SEMINAR OF ANALYTICAL CHEMISTRY
Year:2014 | Issue:20

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Title

STUDYING THE ADSORPTION PROCESS OF RIBOFLAVIN ON SILVER-DEPOSITED FE3O4 NANOPARTICLES

Author(s)

AKHOND MORTEZA | ABSALAN GHODRATOLLAH | RAFATMAH ELMIRA | Issue Writer Certificate

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Abstract

THERE IS AN OVER-EXPRESSION OF RIBOFLAVIN RECEPTORS ON THE CELL MEMBRANE OF BREAST AND PROSTATE CANCER CELLS [1]. THESE RECEPTORS ALLOW RIBOFLAVIN TO ENTER THE CELL AND ASSIST IN THE FORMATION OF THE REDOX COFACTORS THAT ARE NECESSARY FOR BASIC FUNCTIONS OF THE CELL. SO RIBOFLAVIN RECEPTORS CAN BE USED AS A BIOMARKER TO DIRECT THE DRUG TO THE CANCER CELLS ONLY. IN THIS STUDY, THE ADSORPTION OF RIBOFLAVIN ONTO SILVER-DEPOSITED FE3O4 NANOPARTICLES (AG/FE3O4) IS DESCRIBED. THE AG/FE3O4 MAGNETIC NANOPARTICLES WERE SYNTHESIZED [2] AND WERE USED AS ADSORBENT. CHARACTERIZATION OF THE OBTAINED NANOPARTICLES WAS ACHIEVED BY FTIR, TEM AND XRD. BATCH ADSORPTION EXPERIMENTS WERE PERFORMED TO INVESTIGATE THE ADSORPTION CONDITIONS. THE INFLUENCE OF SEVERAL PARAMETERS SUCH AS NANOPARTICLES DOSAGE, PH OF THE SOLUTION, RIBOFLAVIN CONCENTRATION, CONTACT TIME BETWEEN REAGENTS, TEMPERATURE, IONIC STRENGTH AND PRESENCE OF HALIDE ANIONS WAS STUDIED. EXPERIMENTAL RESULTS INDICATED THAT AG/FE3O4 NANOPARTICLES CAN ADSORBED MORE THAN 90% OF RIBOFLAVIN UNDER THE OPTIMUM EXPERIMENTAL CONDITIONS OF NANOPARTICLES DOSAGE OF 4.0 MG, A PH OF 6.0±0.2, AND A CONTACT TIME OF 2.0 MINUTES, WHEN INITIAL RIBOFLAVIN CONCENTRATIONS OF 0.02 MMOL L-1 WAS USED.ORIENTATION OF RIBOFLAVIN MOLECULE TOWARD AG/FE3O4 SURFACE WAS PROPOSED TO BE PERPENDICULAR AND DISSOLUTION OF THE SILVER LAYER FROM AG/FE3O4 NANOPARTICLES WAS SEEN IN THE PRESENCE OF HALIDE ANIONS. ADSORPTION ISOTHERM MODELING REVEALED THAT THE DUBININ-RADUSHKEVICH MODEL COULD BETTER DESCRIBE THE ADSORPTION OF RIBOFLAVIN ONTO AG/FE3O4 NANOPARTICLES AS COMPARED TO FREUNDLICH MODEL. ALSO, IT WAS CONCLUDED THAT THE ADSORPTION PROCESS IS PHYSICAL IN NATURE.KINETIC DATA WAS APPROPRIATELY FITTED TO THE PSEUDO-SECOND-ORDER ADSORPTION RATE MODEL.

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APA: Copy

AKHOND, MORTEZA, ABSALAN, GHODRATOLLAH, & RAFATMAH, ELMIRA. (2014). STUDYING THE ADSORPTION PROCESS OF RIBOFLAVIN ON SILVER-DEPOSITED FE3O4 NANOPARTICLES. IRANIAN SEMINAR OF ANALYTICAL CHEMISTRY. SID. https://sid.ir/paper/911458/en

Vancouver: Copy

AKHOND MORTEZA, ABSALAN GHODRATOLLAH, RAFATMAH ELMIRA. STUDYING THE ADSORPTION PROCESS OF RIBOFLAVIN ON SILVER-DEPOSITED FE3O4 NANOPARTICLES. 2014. Available from: https://sid.ir/paper/911458/en

IEEE: Copy

MORTEZA AKHOND, GHODRATOLLAH ABSALAN, and ELMIRA RAFATMAH, “STUDYING THE ADSORPTION PROCESS OF RIBOFLAVIN ON SILVER-DEPOSITED FE3O4 NANOPARTICLES,” presented at the IRANIAN SEMINAR OF ANALYTICAL CHEMISTRY. 2014, [Online]. Available: https://sid.ir/paper/911458/en

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