In situ study of oxidative etching of palladium nanocrystals by liquid cell electron microscopy.

Yingying Jiang, Guomin Zhu, Fang Lin, Hui Zhang, Chuanhong Jin, Jun Yuan, Deren Yang, Ze Zhang

Research output: Contribution to journalArticlepeer-review


Oxidative etching has widely prevailed in the synthesis of a crystal and played a critical role in determining the final growth behavior. In this Letter, we report an in situ microscopic study on the oxidative etching of palladium cubic nanocrystals by liquid cell scanning transmission electron microscopy. The etching was realized with oxidative radiation reactants from electron-water interaction in the presence of Br(-) ions. Dissolution dynamics of monodispersed and aggregated nanocrystals were both investigated and compared. Analyses on the dissolution kinetics of nanocrystals and the diffusion kinetics of the dissolved agents were carried out based on the scanning transmission electron microscopy characterizations. The results presented here pave a way toward the quantitative understanding of the oxidative etching reaction and its application in the functionally orientated fabrication of nanocrystals with certain sizes, structures, and morphologies.
Original languageEnglish
Pages (from-to)3761-3765
Number of pages5
JournalNano Letters
Issue number7
Early online date13 Jun 2014
Publication statusPublished - 9 Jul 2014

Cite this