Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: How to create a gold mirror?
fluorescence
Hazard to Others
***




Posts: 285
Registered: 11-11-2013
Member Is Offline

Mood: So cold outside

[*] posted on 5-2-2019 at 09:39
How to create a gold mirror?


Has anyone ever successfully made a gold mirror in a test tube, much like the silver Tollens reaction does?

I understand that it really depends on your reducing agent as gold will be much more easily reduced. And you can't prepare that soluble ammine complex like with silver.

I found one description that used AuCl3 in combination with Ethanol / Acetaldehyde and Glucose to get a slow reaction. But it would never mirror out at all.

Perhaps some of you guys has an idea.




View user's profile View All Posts By User
wg48
National Hazard
****




Posts: 821
Registered: 21-11-2015
Member Is Offline

Mood: No Mood

[*] posted on 6-2-2019 at 00:35


The following Review of Electroless Gold Deposition Processes may be useful to you
Attachment: Review ofElectroless Gold Deposition Processes.pdf (4.4MB)
This file has been downloaded 540 times




Borosilicate glass:
Good temperature resistance and good thermal shock resistance but finite.
For normal, standard service typically 200-230°C, for short-term (minutes) service max 400°C
Maximum thermal shock resistance is 160°C
View user's profile View All Posts By User
Chemetix
Hazard to Others
***




Posts: 375
Registered: 23-9-2016
Location: Oztrayleeyah
Member Is Offline

Mood: Wavering between lucidity and madness

[*] posted on 6-2-2019 at 01:11


What do you actually want to achieve? You can use a flame to vapour deposit gold onto glass or you can use a standard lustre paint to fire it on to either glass or ceramic. There is electrodeposition onto a suitably prepared surface as well. No point going into details until we get some idea about the objective you wish to accomplish.
View user's profile View All Posts By User
j_sum1
Administrator
********




Posts: 6220
Registered: 4-10-2014
Location: Unmoved
Member Is Offline

Mood: Organised

[*] posted on 6-2-2019 at 01:22


I am going to answer that question for myself, Chemetix. I have always fancied samples of Cu, Ag and Au for my element collection: identical test tubes with the metal mirror inside and ampouled shut to avoud dust and damage.

Ag is well documented. Cu and Ag less so.
View user's profile View All Posts By User

  Go To Top