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Citation: DUAN Jun-Yuan, ZHANG Qiao-Xin, WANG Yi-Long, GUAN Jian-Guo. Facile Synthesis and Formation Mechanism of Silver Nanoplates with Edge Lengths of Several Micrometers[J]. Acta Physico-Chimica Sinica, ;2009, 25(07): 1405-1408. doi: 10.3866/PKU.WHXB20090731 shu

Facile Synthesis and Formation Mechanism of Silver Nanoplates with Edge Lengths of Several Micrometers

1.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China

Received Date: 2 March 2009
Available Online: 11 May 2009

We developed a low temperature solvothermal approach to synthesize single crystal silver nanoplates with edge lengths of 1-4 μm, thicknesses of 50-100 nm and aspect ratios ≥10 in a large-scale. In this solvothermal approach, N,N-dimethyllformamide (DMF) was used as a main reducing agent and as a solvent, polyvinylpyrrolidone (PVP) was used as a supplementary reducing agent and capping agent, and silver nitrates were used as precursors. The as-obtained silver products of high-purity were characterized by powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). We investigated the impact of different solvents on the morphologies of these silver nanostructures and proposed a possible growth mechanism for the as-synthesized silver nanoplates with large edge lengths and high aspect ratios. The current work provides a new reliable kinetic approach to tune the edge lengths and aspect ratios of silver nanoplates. The as-obtained silver nanoplates with large edge lengths and high aspect ratios have potential important application in polymer-based conductive composites and electromagnetic shielding materials.
- Nanocrystal,
- N,N-dimethyllformamide,
- Polyvinylpyrrolidone,
- Silver nanoplates,
- Conductive composite
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