Nanoscale galvanic replacement reactions of Ag nanocubes
Liquid Heating platform was to observe the nucleation, growth, and coalescence of voids inside the nanocubes during the GR reaction with Au ions at different temperatures. In the experiment, the nanocube solution was drop-casted onto the heater chips and sealed in the liquid holder using the bottom spacer chips. The Ag nanocubes were heated to a desired temperature before flowing the solution. The Ag nanocube studied were stable and remained in cuboid shape after heating at ~ 90 degree Celsius during imaging.
Left: Movie showing the morphological evolution of Ag nanocubes during galvanic replacement reaction at 23°C.
Reference: See Wee Chee, Shu Fen Tan, Zhaslan Baraissov, Michel Bosman & Utkur Mirsaidov. “Direct observation of the nanoscale Kirkendall effect during galvanic replacement reactions,” Nature Communications (2017). Abstract
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