Table 3.
Surface compositions of Au nanoparticles before and after functionalization with TG and interaction with MBP.
| Samples | Elements line | S2p fitting | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Na1s | O1s | N1s | Ti2p | C1s | Cl2p | S2p | Au4f | 2p3/2 1 | 2p1/2 1 | 2p3/2 2 | S2p1/2 2 | |
| Concentration at% | ||||||||||||
| Ti substrate | − | 56.93 (0.3) | − | 22.31 (0.1) | 20.77 (0.3) | − | − | − | ||||
| AuNPs pristine | 21.83 (0.5) | 36.06 (0.7) | − | 2.89 (0.6) | 34.93 (0.6) | 2.74 (0.4) | − | 1.55 (0.2) | ||||
| AuNPs+TG | 11.56 (1.9) | 34.99 (1.7) | − | 4.86 (1.0) | 41.49 (1.5) | 0.31 (0.03) | 0.49 (0.2) | 6.30 (1.3) | 47.40 (0.2) | 23.69 (0.1) | 19.28 (0.2) | 9.64 (0.1) |
| AuNPs+TG+MBP | − | 29.97 (0.4) | 7.39 (0.5) | ND | 55.88 (0.5) | − | ND | 6.76 (0.8) | ||||
(Standard Deviation in brackets).