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. 2019 Jan 2;4(1):104–113. doi: 10.1021/acsomega.8b02747

Figure 1.

Figure 1

(a–c) SEM images show the morphology of positively charged CeO2 NPs as a function of reaction time: (a) 5 h, (b) 8 h, and (c) 20 h. Inset in image (c) shows NPs at higher magnifications (Scale bar = 200 nm).