Table 2.
Average crystallite sizes L, quantitative compositions (cation ratios MII:MIII and water amounts per formula unit y) and specific surface areas S of ZnCr- and NiCr-LDHs chosen for photocatalytic experiments.
| Sample Abbreviation | L, nm | Synthesis Conditions | MII:MIII Ratio | y | S, m2∙g−1 | |
|---|---|---|---|---|---|---|
| EDX | ICP-AES | |||||
| ZnCr-LDH | ||||||
| ZnCr-100 | 11.0 | 100 °C, 1 d | 2:1 | 2:1.01 | 1.1 | 58 |
| ZnCr-125 | 14.8 | 125 °C, 1 d | − | − | − | − |
| ZnCr-150-6h | 16.0 | 150 °C, 6 h | 2:1 | 2:1.03 | 1.5 | 70 |
| ZnCr-DC | 17.6 | 150 °C, 1 d | − | − | − | − |
| ZnCr-SHS | 18.0 | 150 °C, 1 d, slow heating, stirring | 2:1 | 2:1.05 | 2.0 | 83 |
| NiCr-LDH | ||||||
| NiCr-100 | 2.0 | 100 °C, 1 d | 2:1 | 2:0.97 | 2.1 | 47 |
| NiCr-125 | 5.8 | 125 °C, 1 d | − | − | − | − |
| NiCr-DC | 12.3 | 150 °C, 1 d | 2:1 | 2:0.98 | 2.3 | 76 |
| NiCr-200 | 16.4 | 200 °C, 1 d | − | − | − | − |
| NiCr-SHS | 25.7 | 200 °C, 1 d, slow heating, stirring | 2:1 | 2:0.96 | 1.9 | 45 |