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. 2020 Dec 20;10(12):2560. doi: 10.3390/nano10122560

Figure 5.

Figure 5

(A) Unit activity of free laccase (0.1 mL from 1.5 mg/mL laccase solution in sodium acetate buffer (100 mM, pH 4)), laccase immobilized on HNTs-Fe3O4-CTs (0.1 mL solution containing 1 mg of laccase immobilized HNTs-Fe3O4-CTs in sodium acetate buffer (100 mM, pH 4)), and HNTs-Fe3O4-CTs-S-S-Laccase (0.1 mL solution containing 1 mg of HNTs-Fe3O4-CTs-S-S-Laccase in sodium acetate buffer (100 mM, pH 4)). (B) Photographic image representing the color change after the oxidation of ABTS by free laccase and HNTs-Fe3O4-CTs-S-S-Laccase.