Preparation of Platina Nanoparticles with the Presence of Cellulose Nano Crystals
Arie Wibowo1,2, Rachmad Santoso1, Hermawan Judawisastra1 and Yogi Wibisono Budhi2,3,a

1 Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, 40132, Bandung, Indonesia
2 Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha 10, 40132, Bandung, Indonesia
3 Department of Chemical Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, 40132, Bandung, Indonesia

Abstract

Platina play a crucial role in catalytic converter device as one of catalyst that convert toxic gases in the exhaust gas emission to less toxic gas pollutant. The performance of this device can be significantly elevated by implementing platina nanoparticles (Pt NPs) because catalytic performance can be increased by decreasing its particles size. However, nanoparticles are not stable and tend to agglomerate, thus prohibit formation of nano particles. In this context, utilization of cellulose nano crystals (CNCs) in fabrication of Pt NPs are attractive due to their ability to encourage nucleation and prevent agglomeration of nanoparticles. In this study, Pt NPs was prepared by reduction of H2PtCl6 solution at various temperature (25, 33 and 40 C) with the presence of CNCs. Based on visual observation, darker precipitate was observed by increasing temperature. Further characterization using UV-Vis spectroscopy showed that about 90% of Pt4+ in solution were successfully convert to dark particles at 40 C. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) revealed that the dark particles in sample is Pt NPs with particles size 16.5 nm.

Keywords: catalytic converter, cellulose nano crystals, nano catalyst, platina nanoparticles, reduction

Topic: Nanomaterial and Nanotechnology