|
Advances in Materials Research Volume 1, Number 1, March 2012 , pages 1-12 DOI: https://doi.org/10.12989/amr.2012.1.1.001 |
||
|
One-pot synthesis of gold trisoctahedra with high-index facets |
||
Do Youb Kim, Kyeong Woo Choi, Sang Hyuk Im, O Ok Park, Xiao-Lan Zhong and Zhi-Yuan Li
|
||
| Abstract | ||
| There have been many efforts on the generating metal nanocrystals enclosed by high-index facets for the use as highly active catalysts. This paper describes a facile synthesis of Au Trisoctahedra with high-index facets. In brief, the Au trisoctahdra were prepared by reduction of HAuCl4 in N,Ndimethylformamide (DMF) containing poly (vinyl pyrrolidone) (PVP) and trace amount of AgNO3. The Ag ions in the reaction solution played a critical role in controlling the trisoctahedral shape of the final product by underpotential deposition (UPD) on the Au surfaces. The as-prepared Au trisoctahedra were single crystal and enclosed by high-index {441}, {773} and {331} facets. | ||
| Key Words | ||
| gold; trisoctahedra; transformation; underpotential deposition; silver | ||
| Address | ||
| Do Youb Kim, Kyeong Woo Choi and O Ok Park: Department of Chemical and Biomolecular Engineering (BK21 graduate program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea. O Ok Park: Department of Energy Systems Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 50-1, Sang-ri, Hyeonpung-myeon, Dalseong-gun, Daegu 711-873, Republic of Korea. Sang Hyuk Im: KRICT-EPFL Global Research Laboratory, Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 19 Sinseongno, Yuseong-gu, Daejeon 305-600, Republic of Korea. Xiao-Lan Zhong and Zhi-Yuan Li: Institute of Physics, Chinese Academy of Science, P. O. Box 603, Beijing 100080, People | ||
