Article Title

Selective synthesis of hexagonal Ag nanoplates in a solution-phase chemical reduction process

Authors

Mingzhu Liu, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
Mei Leng, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
Chao Yu, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
Xin Wang, Division of Chemical and Biomolecular Engineering, Nanyang Technological University, 637722, Singapore
Cheng Wang, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China

Keywords

Synthesis, Ag hexagonal nanoplates, etching effect, transformation

Abstract

Two-dimensional (2-D) Ag nanoplates have surface plasmon resonances which can be tuned from the visible to the near-IR by varying the size and morphology of the nanoplates. Due to their anisotropic structures and different surface energy distributions, Ag nanoplates—especially triangular ones—are kinetically stable and can transform into other nanostructures. Taking advantage of the synergetic effects of HNO3 and Cl– in the reduction solution, uniform Ag hexagonal nanoplates (HNPs) have been captured during the transformation of Ag triangular nanoplates (TNPs). The dimensions of the Ag HNPs can be controlled by changing the concentrations of reagents in the reaction or/and reduction solutions. Resonance absorption spectra of the obtained Ag HNPs indicated that their in-plane resonance peaks could be tuned from the visible to the near-IR region, showing their potential applications in medical diagnosis.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-010-0055-z

Publisher

Tsinghua University Press

Recommended Citation

Mingzhu Liu,Mei Leng,Chao Yu,Xin Wang,Cheng Wang, Selective synthesis of hexagonal Ag nanoplates in a solution-phase chemical reduction process. NanoRes.2010, 3(12): 843–851