Practical Electron Microscopy and Database

An Online Book, Second Edition by Dr. Yougui Liao (2006)

Practical Electron Microscopy and Database - An Online Book

Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix

Number of Atoms at Surface of and in Nanoparticles

Assuming the crystalline parameters in nanoparticles are the same as those in bulk crystals, an Au (gold) nanoparticle in diameter of ~2.3 nm contains 309 atoms. Those atoms can be packed into a completed polyhedron, such as icosahedrons, ino-decahedrons or cuboctahedrons. [1] In this type of clusters, approximately 50% atoms locate at the surface.

 

 

 

[1] Curley BC, Johnston RL, Young NP, Li ZY, DiVece M, Palmer RE, et al. J Phys Chem C 2007;111:17846–51.