Efficient and Rapid Removal of Environmental Malignant Arsenic(III) and Industrial Dyes Using Reusable, Recoverable Ternary Iron Oxide - ORMOSIL - Reduced Graphene Oxide Composite
2017
Sahu, Tushar Kanta | Arora, Sonia | Banik, Avishek | Iyer, Parameswar Krishnan | Qureshi, Mohammad
In this work, we have demonstrated an efficient and simple reusable catalyst, which can be operated on site for water remediation. In the present report, we have proposed a near 100% dye adsorption and the effective removal of arsenic(III) using a ternary composite consisting of ORMOSIL-Fe₃O₄-RGO. A simple and low-temperature synthesis to prepare an ORMOSIL-Fe₃O₄-RGO composite has been developed as a one stop solution for water remediation. Particularly, this composite was employed for the elimination of arsenite (III) ions and Rhodamine B dye from water, which has a huge impact in developing/underdeveloped countries in South Asian and some of the American regions. The structural, physical, and chemical properties of this composite were investigated through various characterization techniques like powder X-ray diffraction (PXRD), fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy dispersion X-ray (EDS), transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM). Using Langmuir isotherms, we calculated the adsorption capacity of the ORMOSIL-Fe₃O₄-RGO composite for Rhodamine B to be ∼1339 mg/g, which is much higher as compared to that of the Fe₃O₄-RGO composite (∼342 mg/g). Furthermore, the capacity of arsenic adsorption of this novel composite material is ∼25% higher than that of Fe₃O₄-RGO according to the Langmuir adsorption isotherm.
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