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Title: Formation of Metal Nanoparticles Directly from Bulk Sources Using Ultrasound and Application to E-Waste Upcycling

A method for creating nanoparticles directly from bulk metal by applying ultrasound to the surface in the presence of a two–part surfactant system is presented. Implosive collapse of cavitation bubbles near the bulk metal surface generates powerful microjets, leading to material ejection. This liberated material is captured and stabilized by a surfactant bilayer in the form of nanoparticles. The method is characterized in detail using gold, but is also demonstrated on other metals and alloys, and is generally applicable. Furthermore it is shown that nanoparticles can be produced regardless of the bulk metal form factor, and the method is extended to an environmentally important problem, the reclamation of gold from an electronic waste stream.
Authors:
ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [2] ;  [1] ;  [1] ;  [1] ; ORCiD logo [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. San Jose State Univ., San Jose, CA (United States)
Publication Date:
Report Number(s):
SAND-2018-10971J
Journal ID: ISSN 1613-6810; 668505
Grant/Contract Number:
AC04-94AL85000; NA-0003525
Type:
Accepted Manuscript
Journal Name:
Small
Additional Journal Information:
Journal Volume: 14; Journal Issue: 17; Journal ID: ISSN 1613-6810
Publisher:
Wiley
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; alloys; bulk metals; cavitation; nanoparticles; ultrasonication
OSTI Identifier:
1476932
Alternate Identifier(s):
OSTI ID: 1429521

Watt, John, Austin, Mariah J., Simocko, Chester K., Pete, Douglas V., Chavez, Jonathan, Ammerman, Lauren M., and Huber, Dale L.. Formation of Metal Nanoparticles Directly from Bulk Sources Using Ultrasound and Application to E-Waste Upcycling. United States: N. p., Web. doi:10.1002/smll.201703615.
Watt, John, Austin, Mariah J., Simocko, Chester K., Pete, Douglas V., Chavez, Jonathan, Ammerman, Lauren M., & Huber, Dale L.. Formation of Metal Nanoparticles Directly from Bulk Sources Using Ultrasound and Application to E-Waste Upcycling. United States. doi:10.1002/smll.201703615.
Watt, John, Austin, Mariah J., Simocko, Chester K., Pete, Douglas V., Chavez, Jonathan, Ammerman, Lauren M., and Huber, Dale L.. 2018. "Formation of Metal Nanoparticles Directly from Bulk Sources Using Ultrasound and Application to E-Waste Upcycling". United States. doi:10.1002/smll.201703615.
@article{osti_1476932,
title = {Formation of Metal Nanoparticles Directly from Bulk Sources Using Ultrasound and Application to E-Waste Upcycling},
author = {Watt, John and Austin, Mariah J. and Simocko, Chester K. and Pete, Douglas V. and Chavez, Jonathan and Ammerman, Lauren M. and Huber, Dale L.},
abstractNote = {A method for creating nanoparticles directly from bulk metal by applying ultrasound to the surface in the presence of a two–part surfactant system is presented. Implosive collapse of cavitation bubbles near the bulk metal surface generates powerful microjets, leading to material ejection. This liberated material is captured and stabilized by a surfactant bilayer in the form of nanoparticles. The method is characterized in detail using gold, but is also demonstrated on other metals and alloys, and is generally applicable. Furthermore it is shown that nanoparticles can be produced regardless of the bulk metal form factor, and the method is extended to an environmentally important problem, the reclamation of gold from an electronic waste stream.},
doi = {10.1002/smll.201703615},
journal = {Small},
number = 17,
volume = 14,
place = {United States},
year = {2018},
month = {3}
}