Controlling length of gold nanowires with large-scale: X-ray absorption spectroscopy approaches to the growth process

By utilizing the X-ray absorption approach, the gold ions evolving from the Au-Cl complex to Au rods have been elucidated. The theoretical simulation of X-ray absorption spectra further revealed the evolution of gold and concluded that ultrafine small clusters of gold (Au-13) formed after a reducing agent was added to the growth solution. A redesigned seed-assisted growth method, a serial addition of growth solution, was employed to achieve the goal of the consecutive support of gold. The development approach was found to successfully fabricate ID gold nanorods/wires with a tunable size from 50 nm to 1.7 mu m.