The technology of nanoscale gold films deposited onto glass by vacuum sputtering is well known in solar glazing. However, aqueous deposition of gold for this purpose appears to be rarely, if ever, commercially exploited. Nevertheless, the uniform film texture and pleasant neutral color of coatings of gold nanoparticles suggest their use in this application. The results of this research showed the optical transmission or reflection spectra obtained from such coatings, was directly related to the interplay between the rates of nucleation and growth of the particles, the manner in which they aggregated and the nature of the prior treatment of the glass surface. Samples with a similar surface coverage of gold nanoparticles may exhibit quite different transmission spectra, depending on the morphology of the coating. Different pretreatment schemes for the glass also ostensibly influenced the results because the glass surface composition and surface tension changed accordingly.
The glass was pretreated with 1:1 sulfuric acid (H2SO4), 98% H2SO4 and buffered hydrofluoric acid (HF). For the glass pretreated with buffered HF, there was higher sodium content and lower contact angle compared with glass surface treated with H2SO4. the following gold deposition also indicated different transmitting spectrum of gold nano films on these pretreated glass. The textile of gold nano coatings on glass pretreated with HF was more uniform than that pretreated with sulfuric acid. Further study also found the glass pretreated with sulfuric acid tended to form the gold nano coating with dual peaks at around 540 nm and 700 nm, while the surface pretreated with buffered HF tended to form the gold nano coatings with a single broad peak at around the 700nm. These trends were modeled using classic heterogeneous nucleation and growth theory.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/2245 must be provided.