Molecular imprinting produces high photoelectric effect facilitating the efficient photocatalytic degradation of salicylic acid by TiO2

摘要

It has been partially shown that salicylic acid (SA) as an imprinting molecule can produce better photocatalytic effect, while the contribution of SA as a molecular imprinting and degradation substrate is not clear. Herein, SA-TiO2 was prepared by a one-step molecular imprinting method using SA as the imprinting molecule and tetra-n-butyl titanate as the precursor, which was analyzed by XRD, UV-Vis, SEM, TEM-EDS, XPS, PL, FT-IR, EIS, and photocurrent response. The results shown that 1.5SA-TiO2 had the best electrochemical properties and therefore the best photoelectric effect. Moreover, the decolorization rates of SA within 30 min were 49.25% and 62.69% for TiO2 and SA-TiO2, respectively, indicating that the synthesized SA-TiO2 had better photocatalytic performance and could be applied in future scenarios for the efficient degradation of SA wastewater.

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