Synthesis of Gold Nanorods by Using H₂O₂ as the Weak Reducer in a Binary Surfactant Mixture

Abstract

A new seed-mediated growth technique for synthesizing gold nanorods (NRs) by using H2O2 as the weak reducer in the presence of a binary surfactant mixture is reported. Gold NRs prepared at different amounts of H2O2 and the gold seeds solution were characterized by transmission electron microscopy (TEM) and visible–near infrared spectroscopy. Gold NRs with tunable aspect ratio from 4.5 to 7 can be obtained and the corresponding longitudinal plasmonic wavelength of the produced gold NRs are tunable from 810 to 1140 nm. This method provides a new pathway for synthesis of gold NRs with a wide range of longitudinal plasmonic peaks, which have potential applications in optoelectronics and biomedicine.

Spectrum and size controllable synthesis of high-quality gold nanorods using 1,7-dihydroxynaphthalene as a reducing agent

“…20 Other weak reducing agents such as pyrogallol, and H 2 O 2 had also been reported to acquire AuNRs with a specific or combined improvement in the morphological and spectral properties. [21][22][23] For exploring more competitive and attractive AuNR synthesis methods, and also expanding the understanding of different reducing agents in the growth and formation of AuNR, the study of finding new and suitable reducing agents is still worthy and beneficial for progress in the research field.…”