Figure 1From: New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type LigandsAbsorption spectra of surface modified 45 Å TiO2 nanoparticles (0.09 M, pH 2) with different ligands (2.5 mM): (A) bare TiO2; (B) catechol; (C) gallic acid; and (D) pyrogallol. Molecular structures of ligands are shown in Table 1 Back to article page