The recognition selectivity comparison of different ionic imprinted materialsa.
| Imprinted method | Template | Competitive ion | k | Adsorption capacity (mmol g−1) | Regenerative property (Reused times) | Reference |
|---|---|---|---|---|---|---|
| A | Cu(ii) | Zn(ii) | 3.29 | 0.92 | 4 | 8 |
| B | Cd(ii) | Pb(ii) | 2.76 | 0.95 | — | 32 |
| B | Cd(ii) | Cu(ii) | 3.82 | 0.95 | — | 32 |
| B | Cd(ii) | Zn(ii) | 1.15 | 0.95 | — | 32 |
| C | Pb(ii) | Cd(ii) | 14.4 | 0.23 | 5 | 33 |
| C | Cd(ii) | Cu(ii) | 7.76 | 0.12 | 5 | 34 |
| C | Cd(ii) | Zn(ii) | 4.63 | 0.12 | 5 | 34 |
| C | Cd(ii) | Cu(ii) | 0.9 | 0.71 | — | 35 |
| C | Cd(ii) | Pb(ii) | 1.2 | 0.71 | — | 35 |
| C | Cd(ii) | Zn(ii) | 1.4 | 0.71 | — | 35 |
| D | Pb(ii) | Zn(ii) | 9.2 | 1.45 | — | 36 |
| E | Cd(ii) | Cu(ii) | 81.3 | 2.23 | 10 | This study |
| E | Cu(ii) | Cd(ii) | 59.9 | 2.10 | 10 | This study |
| E | Cu(ii) | Pb(ii) | 39.5 | 2.10 | 10 | This study |
| E | Cd(ii) | Pb(ii) | 29.3 | 2.23 | 10 | This study |
| E | Pb(ii) | Cd(ii) | 16.8 | 2.15 | 10 | This study |
a
A is the bulk polymerization method; B is the emulsion polymerization method; C is the “grafting polymerization synchronized with crosslinking/imprinting” method; D is the “pre-grafting polymerization and post-crosslinking/imprinting” method; E is the novel surface imprinted technique designed in this study.