Magnetic-nanoclay montmorillonite/iron oxide (MMT/Fe 3 O 4 ) nanocomposite was prepared by co-precipitation method and montmorillonite/iron oxide/silver (MMT/Fe 3 O 4 /Ag) nanocomposite was synthesized, called as chemical reduction method, by reduction of silver nitrate (AgNO 3 ) salt with sodium borohydride (NaBH 4 ) as reducing agent. These nanocomposites were characterized by Branuer-Emmet-Teller Surface Area and Porosity Dimension (BET), X-Ray Diffractometer (XRD), Fourier Transform Infrared Spectrum (FTIR), Scanning Electron Microscope (SEM) and Vibrating Sample Magnetometer (VSM). Subsequently, MMT/Fe 3 O 4 /Ag was used in degradation of Rhodamine B (RhB) in the presence of NaBH 4 to evaluate catalytic activity of its and consequences were monitored using UV-Visible Spektrofotometer (UV-Vis). Moreover, various parameters including pH, catalyst dosage, initial dye concentration and amount of NaBH 4 were investigated for optimum reaction conditions. The reduction reactions followed pseudo-first order kinetics and complete degradation of RhB were achieved in 8 minutes using MMT/Fe 3 O 4 /Ag as catalysts while degradation of %46 of RhB were achieved in 60 minutes using MMT/Fe 3 O 4 .
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