Calculated values of average crystallite size and strain for the as-prepared ZnO nanoparticles by UDM (W-H plot) and Scherrer formula_
| Sample | Average crystallite size | Strain (є) | |
|---|---|---|---|
| UDM (W-H plot) Scherrer formula | |||
| C1 | 55 nm | 40 nm | 2.133 × 10—3 |
| C2 | 51 nm | 38 nm | 2.163 × 10—3 |
| C3 | 40 nm | 30 nm | 2.743 × 10—3 |
| C4 | 31 nm | 23 nm | 3.597 × 10—3 |
Average diameter of as-prepared ZnO nanoparticles obtained from field emission scanning electron microscope images_
| Sample | Molar ratio | Average particle size |
|---|---|---|
| C1 | 1:1 | 60 nm |
| C2 | 1:2 | 58 nm |
| C3 | 1:3 | 52 nm |
| C4 | 1:4 | 50 nm |
List of final ZnO samples (C1-C4) obtained at different NaOH concentrations_
| Sample | Precursor concentration | Molar | Reaction temperature | Heating time | |
|---|---|---|---|---|---|
| Zinc acetate | NaOH | ratio | |||
| C1 | 0.1M | 0.1M | 1:1 | 90 °C | 2h |
| C2 | 0.1M | 0.2M | 1:2 | 90 °C | 2h |
| C3 | 0.1M | 0.3M | 1:3 | 90 °C | 2h |
| C4 | 0.1M | 0.4M | 1:4 | 90 °C | 2h |