On 2016 Nov 21, Erik Shapiro commented:

Interesting work! It may be a subtle detail, but did you use iron pentacarbonyl or iron acac as the starting material? In the list of chemicals, you say iron pentacarbonyl, and in the methods you say iron acac. It is somewhat important because the synthesis of iron oxide using the two different starting materials is often different; one being a hot-injection method (pentacarbonyl) the other being what you described (iron acac).

On 2016 Nov 21, Erik Shapiro commented:

Interesting work! It may be a subtle detail, but did you use iron pentacarbonyl or iron acac as the starting material? In the list of chemicals, you say iron pentacarbonyl, and in the methods you say iron acac. It is somewhat important because the synthesis of iron oxide using the two different starting materials is often different; one being a hot-injection method (pentacarbonyl) the other being what you described (iron acac).