Open AccessSynthesis Of Imprinted Ionic Material (SiO2(BGS/RHA)-TMPDT-Im-Au) For Adsorption Of Ion Au(III)
Author(s) -
Sri Hastuti,
Sayekti Wahyuningsih,
Tri Martini,
Ikrima Nur Hayati
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/578/1/012018
Subject(s) - adsorption , fourier transform infrared spectroscopy , scanning electron microscope , nuclear chemistry , materials science , gravimetric analysis , chemistry , chemical engineering , organic chemistry , composite material , engineering
Synthesis of imprinted ionic material SiO 2(BGS/RHA) -TMPDT-Im-Au) was successfully studied. Sodium silicate from a mixture of ash bagasse and rice husk (Na 2 SiO 3(BGS/RHA) ) were used as the precursors. Furthermore, Na 2 SiO 3(BGS/RHA is modified with the N 1 -(3-Trimethoxysilylpropyl)diethylenetriamine (TMPDT) in which Au(III) ions are used as templates. The synthesis results were characterized by Fourier-transform infrared spectroscopy (FTIR), Surface area analyzers (SAA), Thermo Gravimetric analysis (TGA), Scanning Electron Microscope with Energy Dispersive X-ray Spectroscopy (SEM-EDX). The adsorption study was carried out using a batch system conducted in various pH and contact time. The adsorption process achieved a maximum pH of 3 in a 60-minute equilibrium time. Au(III) adsorption capacity of SiO 2(BGS/RHA) -TMPDT-Im-Au was 10.44 mg/g. The kinetic studies show that the adsorption of Au(III) on SiO 2(BGS/RHA) -TMPDT-Im-Au follows a pseudo-second-order with the reaction rate constant (k) of 76.7331 g mol –1 min –1 .