Hi guys,
I have prepared the small Mn3O4 NPs via the method reported in the literature.
Details of the synthesis are as follows:
300 mg Mn(acac)2 and 9.63 ml oleylamine were heated at 150 ℃ for 9 h under an N2 atmosphere. After the product cooled to room temperature,excess ethanol was added to obtain precipitates.
Why are there many large particles in the TEM images?