Structural characterizations of gold nanorods synthesized using seed mediated method

摘要

In this research work, gold nanorods (AuNRs) with the structure-directing elongation of Au seeds are successfully synthesized by seed-mediated method using tetrachloroaurate trihydrate (HAuCl_4.3H_2O) as precursor and cetyltrimethylammonium bromide (CTAB) as surfactant. Herein, structural properties of synthesized AuNRs are examined using X-ray diffraction (XRD), and Fourier transform infra-red (FTIR) spectroscopies. XRD analysis reveals the synthesis of cubic phase AuNRs with face centered lattice. The average crystallite size and strain are also evaluated from Debye Scherrer's formula and William-Hall equations. All characteristics bands of AuNRs are observed in the FTIR spectra. The presence of CTAB is evidenced from FTIR study.