Abstract
Abstract Mechanism for the formation of core-shell ATO-TiO2 was investigated. Zeta potential, XRD, TEM, XPS and LCR digital bridge were employed to characterize the morphology, phase structure, surface composition and conductivity of samples. Results indicated that the formation of ATO-TiO2 is through a synergistic effect between dispersive force and electrostatic repulsion, and this synergistic effect reaches the optimum status at pH = 2. Results obtained from theoretic calculation suggested that the ATO surrounded on TiO2 is in particle form, and the formation mechanism could be depicted by an “islands-on-sphere” model.
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