Table 6 Comparison of catalytic activity for the reduction of Cr(VI) to Cr(III) using various catalytic systems reported in literature and the results obtained in the present study.
From: Theoretical insights in catalytic reduction of Cr(VI) using Pd/Fe nitrogen doped mesoporous carbon
Catalyst | [Cr2O72−] | [HCOONa] | Reaction time (min) | pH | Removal efficiency (%) | References |
|---|---|---|---|---|---|---|
RHC-mag-CNa (2.0 g L−1) | 10.4 mg L−1 | – | 10 | 3.0 | 92.0 | |
RHC-mag-CN (0.5 g L−1) | 10.4 mg L−1 | – | 30 | 3.0 | 61.2 | |
RHC-mag-CN (1.0 g L−1) | 10.4 mg L−1 | – | 30 | 3.0 | 89.5 | |
RHC-mag-CN (2.0 g L−1) | 10.4 mg L−1 | – | 30 | 3.0 | 92.6 | |
Pd/Fe-NMCb (8 mg L−1) | 50 mg/L | 600 mg/L | 20 | 2.0 | 100 | |
Pd/Fe-NMC (8 mg L−1) | 80 mg/L | 600 mg/L | 10 | 2.0 | 97 | |
Pd/Fe-NMC (8 mg L−1) | 50 mg/L | 600 mg/L | 80 | 2.0 | 97 | |
Pd/Fe-NMC (8 mg L−1) | 50 mg/L | 1000 mg/L | 80 | 2.0 | 100 | |
Fe3O4/Pd@N-Cc (10 mg, 3.76% Pd) | 10 ml (2 mM) | 85% | 2.4 | – | 45.2 | |
Fe3O4/Pd@N–C (10 mg, 2.28% Pd) | 10 ml (2 mM) | 85% | 3.0 | – | 100 | |
Fe/CMK-3d (1 g L−1) | 100 mg L−1 | – | 1800 | 5.0 | 97.0 | |
PANI–Fe/OMCe (1.0 g) | 80 mg/L | – | 180.0 | 5.0 | 92 | |
Fe/OMCf (1.0 g) | 80 mg/L | – | 180.0 | 5.0 | 53 | |
Pd/Fe-NMC | 0.00083 M | 1.02 M | 161.30 | 1.37 | 99.82 | This study |
