Skip to main content
. 2020 May 31;10(6):1086. doi: 10.3390/nano10061086

Figure 24.

Figure 24

SEM images of morphology evolution of ZnO microspheres prepared with 2 mmol trisodium citrate dihydrate at 90 °C for 70 different microwave irradiation durations: (a) 10 min, (b) 20 min, (c) 40 min, and (d) 45 min. (e) Schematic illustration of the formation process of a hollow ZnO microsphere. Republished with permission of ©Royal Society of Chemistry from [652], Copyright (2013), permission conveyed through Copyright Clearance Center, INC. All rights reserved. In order to re-use permission must be obtained from the rightsholder.