| Mineral: |
Goethite |
| Reference: |
XGTZT15 |
| Preparation: |
Goethite was synthesized according to Machesky and Anderson [24]. Details of the method refers to Zhao et al. [25]: Goethite was precipitated by dissolving Fe(NO3)3·9H2O salt using 5 M NaOH with an OH/Fe ratio of 2.0. The suspension was aged for 48 h at room temperature. Then, additional 5 M NaOH was added until the pH reached 12.5. The precipitates were aged at 60 °C for 6 days and centrifuged. Supernatant solutions were discarded. The precipitate was dialyzed to remove excess salt and then freeze-dried. |
| Crystallinity: |
well-formed acicular particles |
| Dimension: |
100 × 20 nm |
| Sample characterized via: |
☑ Transmission electron microscopy (TEM)
☑ X-ray Diffraction (XRD)
|
| |
