Table 2.
Composition of synthesized materials determined by XRF.
| Material | Fe, Si Content (%) | S (%) | hpbtz (m mol g−1) |
|---|---|---|---|
| Fe3O4-H | Fe (61.4) | - | - |
| Fe3O4-C | Fe (74.2) | - | - |
| Fe3O4-H@hpbtz | Fe (75.2) | 0.307 | 0.096 |
| Fe3O4-C@hpbtz | Fe (60.3) | 0.543 | 0.170 |
| Fe3O4@hpbtz | Fe (64.5) | 0.107 | 0.033 |
| MSNs | Si (22.7) | - | - |
| MSN-Et3N-IPTMS-hpbtz-f1 | Si (28) | 0.178 | 0.056 |
| MSN-pyridine-IPTMS-hpbtz-f2 | Si (19.0) | 0.051 | 0.016 |
| MSN-NaOH-IPTMS-hpbtz-f3 | Si (17.0) | 0.057 | 0.018 |
| MSN-Et3N-NCO-hpbtz-e1 | Si (9.70) | 0.010 | 0.003 |
| MSN-pyridine-NCO-hpbtz-e2 | Si (11,6) | 0.025 | 0.008 |
| MSN-NaOH-NCO-hpbtz-e3 | Si (8.97) | 0.021 | 0.006 |