TY - JOUR
T1 - Stabilization of Au-Ag Nanoalloys with Polyvinylpyrrolidone (PVP) as Capping Agent
AU - Hidayah, A. N.
AU - Triyono, D.
AU - Saputra, A. B.
AU - Herbani, Y.
AU - Isnaeni, I.
AU - Suliyanti, M. M.
N1 - Publisher Copyright:
© 2019 Published under licence by IOP Publishing Ltd.
PY - 2019/4/16
Y1 - 2019/4/16
N2 - Van der Waals attraction between nanoparticles will create aggregation, therefore, adding a capping agent is needed to stabilize the nanoparticles. We have synthesized Au50Ag50 nanoalloys from a mixture of silver and gold metal ions using a femtosecond laser irradiated for 5, 10, and 15 minutes. The process occurred in a water-only medium and in a water medium added with 0.01 wt% polyvinylpyrrolidone (PVP). Only Au50Ag50 with 5 minutes irradiation times that was characterized by TEM. From TEM result, PVP was proven to generate stabilization of the nanoparticles. It was confirmed that the nanoparticles in Au-Ag nanoalloys with PVP are more disperse than the Au-Ag nanoalloys without PVP. From the result, the particle size of Au-Ag nanoalloys without PVP is 10.72 nm, and 7.94 nm with PVP. This indicates that not only reducing the van der Waals attractive forces and stabilizing the nanoparticles, PVP can also reduce the particle size.
AB - Van der Waals attraction between nanoparticles will create aggregation, therefore, adding a capping agent is needed to stabilize the nanoparticles. We have synthesized Au50Ag50 nanoalloys from a mixture of silver and gold metal ions using a femtosecond laser irradiated for 5, 10, and 15 minutes. The process occurred in a water-only medium and in a water medium added with 0.01 wt% polyvinylpyrrolidone (PVP). Only Au50Ag50 with 5 minutes irradiation times that was characterized by TEM. From TEM result, PVP was proven to generate stabilization of the nanoparticles. It was confirmed that the nanoparticles in Au-Ag nanoalloys with PVP are more disperse than the Au-Ag nanoalloys without PVP. From the result, the particle size of Au-Ag nanoalloys without PVP is 10.72 nm, and 7.94 nm with PVP. This indicates that not only reducing the van der Waals attractive forces and stabilizing the nanoparticles, PVP can also reduce the particle size.
UR - http://www.scopus.com/inward/record.url?scp=85065586221&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1191/1/012010
DO - 10.1088/1742-6596/1191/1/012010
M3 - Conference article
AN - SCOPUS:85065586221
SN - 1742-6588
VL - 1191
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012010
T2 - 4th International Symposium on Frontier of Applied Physics, ISFAP 2018
Y2 - 1 November 2018 through 2 November 2018
ER -