Optimization of silver nanodendrites for surface enhanced Raman spectroscopy (SERS) in an acidic environment

• Main Authors: Shapril, Nur'ain Nadia, Ming, Chin Kim, Said, Suhana Mohd, Johan, Mohd Rafie
• Format: Article
• Published: Elsevier 2018
• Subjects: TJ Mechanical engineering and machinery; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.um.edu.my/20708/; https://doi.org/10.1016/j.ijleo.2018.03.028
• Institution: Universiti Malaya

Silver nanodendrites (Ag NDs) are synthesized by chemical reduction with silver nitrate (AgNO3) as a precursor, ethanol as reducing agent and polyvinyl pyrrolidone (PVP) as a stabilizer. The as-synthesized Ag NDs are then characterized by UV–vis Spectroscopy ((UV–vis)) and sample 15% Ag shows the most absorbency. Transmission Electron Microscopy (TEM) confirms the morphological of dendritic structure. The pH of 15% Ag NDs sample were then modified to acidic condition and the Surface Enhanced Raman Scattering (SERS) investigation is done using 4-Aminobenzebethiol (4-ABT) as a molecular probe. 15% Ag NDs with pH 3 shows the best performance in SERS application and the optical properties.