Speaker
Description
Chaiwat Phrompeta, Chaval Sriwongb, Chesta Ruttanapuna,*and Santi Maensiric
a Department of Physics, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand
bDepartment of Chemistry, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand
cSchool of Physics, Institute of Science, Suranaree University of Technology Nakhon Ratchasima, 30000, Thailand
*E-mail: chesta.ruttanapun@gmail.com
Abstract; The aim of this work is to study the preparation and characterization of cement 12CaO•7Al2O3/reduced graphene oxide hybrid composite, and the including electrical properties were also investigated. In the preparation, the hybrid composites were easily prepared by directly mixing method based on the use of fixed 12CaO•7Al2O3 (C12A7) suspension with different amounts of reduced graphene oxide (rGO) suspensions. The prepared hybrid samples were characterized by using X-ray diffraction (XRD), Fourier-transformed infrared spectroscopy (FT-IR), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The results showed that the crystalline phases and functional groups of these composites are corresponding to pristine C12A7, whereas all of rGO characteristic peaks are not observed. Nevertheless, the characteristic peaks of rGO in the hybrid composites could be seen and confirmed by Raman spectroscopy technique. Form the electrical test found that the electrical conductivities of C12A7/rGO composites were increased with increasing amounts of rGO nanosheets loading. This may be due to the fact that it corroborates the strong interfacial interaction between rGO and C12A7 particles.
Keywords: 12CaO•7Al2O3 (C12A7), Reduced graphene oxide (rGO), Electrical conductivity
