A donor–acceptor–donor-type conjugated polymer-modified TiO2 with enhanced photocatalytic activity under simulated sunlight and natural sunlight
Source abstract
Abstract
A low bandgap donor–acceptor–donor (D–A–D)-type conjugated polymer, poly(3,6-bis(3,4-ethylenedioxythienyl)pyridazine) (poly(EPE)), including 3,4-ethylenedioxythiophene as donor (D) and pyridazine as acceptor (A) units were synthesized. The nanocomposites (poly(EPE)/TiO2) of D–A–D-type conjugated polymer and TiO2 with different weight percentage of poly(EPE) were successfully prepared by an in situ chemical oxidative polymerization method. The structure and morphology of nanocomposites were investigated by Fourier transform infrared spectroscopy, UV–Vis diffuse reflectance spectra (UV–Vis/DRS), scanning electron microscopy images and transmission electron microscopy images. The structural and morphological studies revealed that the poly(EPE) was entrapped in the TiO2 nanoparticles. The photocatalytic activities of nanocomposites were measured by the photodegradation of methyl orange (MO) aqueous solutions under simulated sunlight and natural sunlight irradiation, respectively. The pseudo-first-order kinetic constants of photocatalytic degradation of MO under simulated sunlight and natural sunlight irradiation with 8 wt% poly(EPE)/TiO2 were 4.39 and 4.04 times as great as that of pure TiO2, respectively, exhibiting greater photocatalytic performance.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Conducting polymers and applications · Polyoxometalates: Synthesis and Applications · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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