Table 1.
Summary table. Samples are reported with synthesis conditions, adsorption results (ads/tot [%]), ζ potential, BET surface area (m2/g)
| Sample name | Synthetic method | Reaction conditions | ζ potential | BET surface area [m2/g] | Adsorption tests | |
|---|---|---|---|---|---|---|
| CuSO4 | Methylene blue | |||||
| Cu2+ads/Cu2+tot [%] | MBads/MBtot [%] | |||||
| βNS-Citr 1:4 | Batch | 140 °C for 1 h, 100 °C for 4 h under vacuum ~ 20 mbar | − 21.8 ± 3.10 | 1.76 ± 0.04 | 58.3 | 74.3 |
| βNS-Citr 1:8 | 140 °C for 1 h, 100 °C for 4 h under vacuum ~ 20 mbar | − 29.4 ± 11.1 | 1.30 ± 0.05 | 64.5 | 84.3 | |
| βNS-Citr 1:4 TSE | Twin-screw extruder | 150 °C for 15 min | − 33.8 ± 4.29 | 1.10 ± 0.06 | 79.9 | 83.5 |
| βNS-Citr 1:8 TSE | 150 °C for 15 min | − 26.0 ± 6.85 | 0.93 ± 0.03 | 71.02 | 75.7 | |