“…Significantly, the peak at 1550 cm –1 is a combination of N–H deformation vibration and C–N of secondary amide stretching vibration while the peak at 1640 cm –1 is the stretching vibration bands of CO–NH. − In addition, the XPS spectra in Figure S9a–d show that the peaks of Al 2p, Sr 3d, O 1s, and Si 2p are all observed in SAO-G@SiO 2 -LBA. Meanwhile, the peak at 402 eV in N 1s spectra and 288.1 eV in C 1s spectra can prove the formation of CO–NH. , Finally, the UV–vis results indicate that the concentration of lysozyme solution decreases after mixing with SAO-G@SiO 2 -LBA for 1 h (Figure S10). Combined with FT-IR, XPS, and UV–vis results, the LBA-functionalized SAO-G for LFP visualization is successfully prepared.…”