Table 3.
Comparisons of the apparent rate constant (Ka) for 4-NP reduction over various catalysts.
| Catalysts | Reaction Conditions 1 | Ka 2/10−3 s−1 | References |
|---|---|---|---|
| NiPt-0.6% (Ni: 36.98 wt % Pt: 0.347 wt %) | 15.5 mg, 2 mM, 25 °C, 0.25 M | 18.82 | This work |
| Pd0.05/G | 4 mg, 0.3 mM, 25 °C, 0.1 M | 36.5 | [1] |
| Ir/IrOx | -, 20 mM, 25 °C, 0.2 M | 2.57 | [2] |
| 230 nm Ni/SiO2 MHMs (Ni: 14.6 wt %) | 3 mg, 5 mM, 25 °C, 0.2 M | 4.5 | [4] |
| Ni NPs | 3 mg, 0.1mM, 20 °C, 0.2 M | 2.7 | [6] |
| Pd-Fe3O4 (1.2 wt %) | 10 mg, 21.56 mM, 25 °C, 0.1 MPa | - | [7] |
| DPNs | -, 2 mM, 25 °C, 0.3 M | 0.75 | [11] |
| Ni/TiO2 | 400 mg, -, 100 °C, 1.5 MPa | - | [14] |
| Ni/SiO2@Au MHMs | 4 mg, 5 mM, 25 °C, 0.2 M | 10 | [15] |
| RGO/PtNi (25:75) | 3 mg, 5 mM, 25 °C, 1.5 M | 1.12 | [35] |
| TAC-Ag-1.0 | 0.004 mg, 0.103 mM, 25 °C, 0.3 M | 5.19 | [38] |
| Au-Cu alloy NP | 50 mg, -, 60 °C, - | - | [39] |
| Pt/γ-Al2O3 (2.7 wt %) | 0.5 mg, 1 mM, 22 °C, 0.1M | 0.53 | [40] |
| Ni-Pt (96:4) | 0.004 mg, 0.085 mM, 25 °C, 0.012 M | 1.93 | [42] |
| AuNPs/SNTs | 8 mg, 0.12 mM, 25 °C, 0.005 M | 10.64 | [43] |
| AuNP/CeO2 (Au: 0.031 mg) | 10 mg, 0.12 mM, 25 °C, 0.005 M | 2.25 | [44] |
1 Reaction conditions follow the order of amount of catalyst, the initial concentration of 4-NP, temperature, H2 pressure/the concentration of NaBH4; 2 Ka: Apparent rate constant.