Turning Waste Silver Chloride into Silver Nanoparticles

Silver chloride is generally seen as a waste product in school chemistry labs. In this article we describe the use of waste silver chloride as a starting product to synthesize stabilized silver nanoparticles. Waste silver chloride was first dissolved using ammonia into diamminesilver(I) ions and subsequently reduced with sodium borohydride using citrate as a stabilizer. The appearance of stable silver colloids can be demonstrated using the Faraday-Tyndall effect and the plasmon resonance can be visualized with UV/Vis spectroscopy.

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