International Science Community Association Research Journal of Chemical Sciences 2231 - 606X 7 4 2017 04 18 Preparation of magnetic iron oxide nanoparticles activated carbon composite from corncob and its application for removal of organic pollutants 24 33 EN Paul Barna 1 Research Centre, Department of Chemistry, Govt. V.Y.T. PG Autonomous College, Durg- 491001, C.G., India Tiwari Alka 2 Research Centre, Department of Chemistry, Govt. V.Y.T. PG Autonomous College, Durg- 491001, C.G., India K.C. Bed Raj 1 Mahendra Multiple Campus, Tribhuvan University, Nepalganj, Nepal A. Sales 1 Instituto de Química Analítica, Facultad de Bioquímica, Química y Farmacia. Universidad Nacional de Tucumán. Ayacucho 471. S. M. de Tucumán. CP 4000, Argentina J.P. López 2 Facultad deCiencias Naturales, Universidad Nacional de Tucumán, Miguel Lillo 205. S. M. de Tucumán. CP 4000. Argentina J. García 3 Facultad deCiencias Naturales, Universidad Nacional de Tucumán, Miguel Lillo 205. S. M. de Tucumán. CP 4000. Argentina P. Balverdi 4 Instituto de Química Analítica, Facultad de Bioquímica, Química y Farmacia. Universidad Nacional de Tucumán. Ayacucho 471. S. M. de Tucumán. CP 4000, Argentina P. Marchisio 5 Instituto de Química Analítica, Facultad de Bioquímica, Química y Farmacia. Universidad Nacional de Tucumán. Ayacucho 471. S. M. de Tucumán. CP 4000, Argentina Singh Shripal 1 CIMFR Nagpur Unit-II, 17/C-Telenkhedi area, Civil Lines, Nagpur-440001, India Jaiswal Rinku 2 CIMFR Nagpur Unit-II, 17/C-Telenkhedi area, Civil Lines, Nagpur-440001, India > Research Paper 2017 1 14 2017 04 18 Magnetic iron oxide nanoparticles are attractive to many researchers because of their wide ranging applications viz. data storage, magnetic fluids, adsorbent, catalysis, biotechnology, biomedicine and environmental remediation. In the present study, efforts have been made to develop magnetic iron oxide nanoparticles activated carbon composite (MIONAC). The activated carbon is prepared from corncob using zinc chloride as an activating agent in a modified muffle furnace with N2-gas inflow arrangement and magnetic nanoparticles by chemical co-precipitation method. The prepared corncob activated carbon (CCAC) and Magnetic iron oxide nanoparticles activated carbon composite (MIONAC) are characterized for N2-BET surface area, SEM, FT-IR, XRD, TEM, pHpzc and VSM. The N2-BET surface area of the MIONAC (807 m2g-1) is found lesser than the prepared CCAC (1429 m2g-1). MIONAC exhibits super magnetic properties under external magnetic field with saturation magnetization value 4.15 emu/g at room temperature. SEM of the CCAC and MIONAC shows the presence of cracks and crevices. TEM of MIONAC shows nanoparticles with size in between 10-20 nm. A broad peak at 2& Copyright@ International Science Community Association 952; = 240 in XRD of CCAC and MIONAC indicates the presence of amorphous carbon. The adsorption isotherms and kinetic studies using CCAC and MIONAC as adsorbents and phenols as adsorbates. The adsorption data shows that the adsorption capacity (Q0) value of MIONAC (90 mg/g) is slightly lesser than the CCAC (125 mg/g). Langmuir kinetic model best suits for determination of adsorption and desorption constants for organic pollutants phenols on both CCAC & MIONAC.