TY - JOUR
T1 - Size-controlled synthesis of monodispersed gold nanoparticles via carbon monoxide gas reduction
AU - Young, Joseph K.
AU - Lewinski, Nastassja A.
AU - Langsner, Robert J.
AU - Kennedy, Laura C.
AU - Satyanarayan, Arthi
AU - Nammalvar, Vengadesan
AU - Lin, Adam Y.
AU - Drezek, Rebekah A.
N1 - Funding Information:
This work was supported by a DoD Era of Hope Scholar Award, Welch Foundation Grant C-1598. We thank Lissett Bickford and Oara Neumann for their assistance and helpful suggestions.
PY - 2011
Y1 - 2011
N2 - An in depth analysis of gold nanoparticle (AuNP) synthesis and size tuning, utilizing carbon monoxide (CO) gas as a reducing agent, is presented for the first time. The sizes of the AuNPs are tunable from ~4 to 100 nm by altering the concentration of HAuCl 4 and inlet CO gas-injection flow rate. It is also found that speciation of aqueous HAuCl 4, prior to reduction, influences the size, morphology, and properties of AuNPs when reduced with CO gas. Ensemble extinction spectra and TEM images provide clear evidence that CO reduction offers a high level of monodispersity with standard deviations as low as 3%. Upon synthesis, no excess reducing agent remains in solution eliminating the need for purification. The time necessary to synthesize AuNPs, using CO, is less than 2 min.
AB - An in depth analysis of gold nanoparticle (AuNP) synthesis and size tuning, utilizing carbon monoxide (CO) gas as a reducing agent, is presented for the first time. The sizes of the AuNPs are tunable from ~4 to 100 nm by altering the concentration of HAuCl 4 and inlet CO gas-injection flow rate. It is also found that speciation of aqueous HAuCl 4, prior to reduction, influences the size, morphology, and properties of AuNPs when reduced with CO gas. Ensemble extinction spectra and TEM images provide clear evidence that CO reduction offers a high level of monodispersity with standard deviations as low as 3%. Upon synthesis, no excess reducing agent remains in solution eliminating the need for purification. The time necessary to synthesize AuNPs, using CO, is less than 2 min.
UR - http://www.scopus.com/inward/record.url?scp=84856031305&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84856031305&partnerID=8YFLogxK
U2 - 10.1186/1556-276X-6-428
DO - 10.1186/1556-276X-6-428
M3 - Article
C2 - 21711955
AN - SCOPUS:84856031305
VL - 6
SP - 1
EP - 11
JO - Nanoscale Research Letters
JF - Nanoscale Research Letters
SN - 1931-7573
M1 - 428
ER -