Title :
Spherical to polyhedral Pt nanocrystal formation assisted with methylamine
Author :
Ooi, Mahayatun Dayana Johan ; Aziz, Aznita Abdul
Author_Institution :
Nano - Optoelectron. Res. & Technol. Lab., Univ. Sains Malaysia, Minden, Malaysia
Abstract :
Nanocrystalline Pt particles synthesized by solvothermal technique assisted with methylamine were investigated. The effect of different amounts of methylamine on the formation of Pt nanocrystal were characterized and elaborated. Small and spherical - like particles were observed for Pt synthesized under the low amount (0.10 mL) of methylamine whilst, concave polyhedral Pt nanocrystal with high - index {411} facets were observed for Pt synthesized under high amount (0.20 mL) of methylamine. The synthesized concave Pt nanocrystal exhibit high absorption peak at 215 nm corresponding to colloidal Pt. The synthesized concave polyhedral structures could be used as a potential catalyst in fuel cells application.
Keywords :
crystal growth from solution; crystal morphology; nanofabrication; nanostructured materials; organic compounds; platinum; ultraviolet spectra; Pt; colloidal platinum; concave polyhedral nanocrystal; fuel cell catalyst application; methylamine assisted platinum nanocrystal formation; methylamine assisted solvothermal technique; polyhedral platinum nanocrystal formation; small spherical nanocrystal; spherical platinum nanocrystal formation; ultraviolet absorption peak; wavelength 215 nm; Absorption; Indexes; Nanocrystals; Platinum; Shape; Surface morphology; Pt nanocrystal; concave polyhedral; high-index facets; methylamine; surface self-aggregation;
Conference_Titel :
Micro and Nanoelectronics (RSM), 2013 IEEE Regional Symposium on
Conference_Location :
Langkawi
Print_ISBN :
978-1-4799-1181-3
DOI :
10.1109/RSM.2013.6706542
