Abstract
Zeta potential studies show that the ATO nanoparticle surface is positively charged in pH range from 2 to 5 without oxalic acid. The addition of oxalic acid brings a charge reversal on the surface of ATO particle in a wide pH range. The interaction of oxalic acid with surface of ATO nanoparticle was studied by FTIR and indicates that the most probable mechanism is the formation of Sn-O-C bonds via the condensation reaction between the oxalic acid and surface hydroxyl groups. TEM, X-ray diffraction and UV-Vis-Near IR spectra were used to characterize the nanocrystalline ATO sol and thin gel film.
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Chen, X.C. Effect of Oxalic Acid on Stabilization and Property of Sb-Doped Tin Oxide Sol. J Sol-Gel Sci Technol 34, 267–271 (2005). https://doi.org/10.1007/s10971-005-2523-6
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DOI: https://doi.org/10.1007/s10971-005-2523-6