Jul 01, 2016 · The protocol for preparation of gold nanoparticles is wet chemical methods which are based on the reduction of gold salts by reagents such as sodium borohydride and ascorbic acid . Penades prepared gold nanoparticles by reduction of Au(III) to Au(0) by NaBH 4 in the presence of a mixture of thiols  .
· Hazardous Chemicals. 1. Acid danger. 2. Heat danger. 3. Poison gas danger. THIS IS FOR AN UNVERIFIED APPROXIMATE DEPICTION OF A RECYCLING PROCESS. I HAVE NOT TESTED THIS MYSELF. DO NOT PERFORM AT HOME. Chemical is very dangerous. You should protect in every step. You have to wear gloves, mask or protective clothing when you work. When extracting gold .