Synthesis of Fe2O3 Nanoparticles From Battery Waste as Photocatalyst for Methylene Blue Decolorization Eko Prabowo Hadisantoso, Fitri Rahmawati, Vina Amalia, Soni Setiadji
Department of Chemistry, Faculty Science and Technology, UIN Sunan Gunung Djati Bandung, Jl. A.H. Nasution No. 105 Bandung, West Java 40614, Indonesia
Abstract
Zinc-Carbon (Zn-C) batteries occupy the largest current Indonesian market share of disposable batteries, resulting in a large number of Zn-C batteries waste needed to be considered. In this paper, Fe2O3 nanoparticles form Zn-C batteries waste was prepared by precipitation method. The iron from the outer layer of Zn-C battery waste was cleaned and dissolved in hydrochloric acid. Brown dark precipitation, Fe(OH)3, will be obtained after adding ammonium hydroxide. This precipitate was calcinated at 700 C for 4 hours to obtain Fe2O3. The XRD analysis result shows that Fe2O3 successfully synthesized. From the XRD data, synthesized Fe2O3 has typical peaks at 2 = 24,124, 33,156, 35,619, 40,852, 49,452 and 54,064, with the highest intensity at 33,156 and 35,619. SEM photo shows that there is an agglomeration of the synthesized Fe2O3 nanoparticles. The Fe2O3 nanoparticles are spherical in shape and have sizes ranging from 33 to 36 nm based on the Debey Scherrer equation. The synthesized Fe2O3 was used for the photocatalytic treatment of methylene blue with several variations, which is a mass variation of Fe2O3, irradiation time, and methylene blue concentration. The largest percentage of decolorization was obtained 50,12% in condition using 0,09 grams of Fe2O3 nanoparticles with 15 mL of 10 ppm methylene blue solution and 3 hours irradiation time.
Keywords: Fe2O3; photocatalyst; battery waste; nanoparticles; methylene blue
