Preparation and Characterization of APTES-functionalized Graphene Oxide for CO2 Adsorption

Nur Fatihah Tajul Arifin; Nur Azira Natasha Zulkipli; Norhaniza Yusof; Ahmad Fauzi Ismail; Farhana Aziz; Wan Norharyati Wan Salleh; Juhana Jaafar; Nik Abdul Hadi Md Nordin; Norazlianie Sazali

Authors

Nur Fatihah Tajul Arifin Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
Nur Azira Natasha Zulkipli Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
Norhaniza Yusof Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
Ahmad Fauzi Ismail Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
Farhana Aziz Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
Wan Norharyati Wan Salleh Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
Juhana Jaafar Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia
Nik Abdul Hadi Md Nordin Department of Chemical Engineering, Universiti Teknologi PETRONAS (UTP), Seri Iskandar, Perak Darul Ridzuan 32610, Malaysia
Norazlianie Sazali Faculty of Mechanical Engineering, Universiti Malaysia Pahang, Pekan, Pahang, 26600, Malaysia

Keywords:

Graphene oxide, carbon dioxide, functionalization, CO2adsorption

Abstract

The increase of carbon dioxide (CO2) concentrations in the atmosphere is one of alarming issues nowadays. Thus, development and optimization of new solid adsorbents is highly demanded for the establishment of energy-efficient and high-throughput CO2 capture processes in industry. Herein, graphene oxide (GO) adsorbent was prepared and further functionalized by amine functionalization, 3-aminopropyl-triethoxysilane (APTES). GO was prepared using Modified Hummer’s Method followed by functionalization with APTES. GO and APTES-GO were characterized using Fourier Transmission Infrared Spectroscopy (FTIR), Raman spectroscopy, scanning electron microscope (SEM), and N2 adsorption isotherm. The N2 adsorption capacity for APTES-GO at 15 bar is the highest (179 mmol/g) compared to other lower pressures and pristine GO at any pressure. FTIR analysis showed significant peaks at 1474 cm−1and 1440cm−1 indicating the presence of N-H and NH2 groups, respectively.