Facile synthesis and size control of spherical aggregates composed of Cu(2)O nanoparticles.
The secondary structures of Cu(2)O nanoparticles were prepared in aqueous solution utilizing self-assembled aggregation process. By introducing polyacrylamide (PAM) as a secondary surfactant, the colloidal nanoparticle aggregates (CNAs) become uniform in size and exhibit spherical shape compared to the random aggregates without PAM. The size of CNA can be systematically controlled from 300nm to 1000nm by varying PAM concentration. The formation mechanism was explained based on a conventional colloidal particle formation mechanism. These control methods may generally be applied to the preparation of secondary nanoparticle structures.
Lee
Woo-Ram
WR
Corporate R & D, LG Chem Research Park, 104-1 Moonji-dong, Yuseong-gu, Daejeon 305-380, Republic of Korea.
Piao
Longhai
L
Park
Cheol-Hee
CH
Lim
Young Soo
YS
Do
Young Rag
YR
Yoon
Sungho
S
Kim
Sang-Ho
SH
D000180:Acrylic Resins / Q000737:chemistry; D003102:Colloids; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D013501:Surface-Active Agents / Q000494:pharmacology; D000099166:Polyacrylamides
D000180:Acrylic Resins; D003102:Colloids; D003300:Copper; D013501:Surface-Active Agents; D000099166:Polyacrylamides; C000520:cuprous oxide