Synthesis and Characterization of Magnetite-CS/AC/Titania Nanocomposite for Heavy Metal (Cu) Adsorption
Muhammad Rusdi1, Ahmad Taufiq1*, Sumari2, Sri Wahyuni2, Arif Hidayat1, Sunaryono1, ST. Ulfawanti Intan Subadra1

1Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, Indonesia
2Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5,Malang 65145, Indonesia

*Corresponding author email: ahmad.taufiq.fmipa[at]um.ac.id

Abstract

In this study, the synthesis of magnetite-CS/AC/titania nanocomposite has been carried out to produce a new adsorbent agent for heavy metal (Cu) adsorption. The nanocomposite was characterized by means of X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and atomic adsorption spectroscopy (AAS). Based on the analysis of the XRD data, the nanocomposit exhibited a magnetite phase detected at 2-theta of 30.35o- 35.64o- 43.25o- 53.66o- 57.31o- and 62.76o while the AC phase was detected at 2-theta of 22.82o-24.65o. Furthermore, titania diffraction peaks were detected at 2-theta of 25.28o- 37.93o- 48.06o- 54.24o- 55.07o- 62.85o- and 68.81o. The SEM image showed that the nanocomposite had an average particle size of 50 nm. Based on the FTIR-spectrum, the presence of Fe-O was detected at wavenumbers of 595 cm-1 and 453 cm-1, N-H at a wavenumber of 1667 cm-1, Ti-O-Ti at a wavenumber of 653 cm-1, C=O and C=C at wavenumbers of 1613 cm-1 and 1706 cm-1, O-H and N-H at wavenumbers of 3240 cm-1 and 3503 cm-1. The analysis result for the nanocomposite AAS data showed that the adsorption capacity for heavy metal (Cu) was 86.9%.

Keywords: Adsorbent agent, nanocomposite, magnetite-CS/AC/titania, adsorption capacity, heavy metal (Cu)

Topic: Magnetic materials