One-pot modern fabrication and characterization of TiO2@terpoly(aniline, anthranilic acid and o-phenylenediamine) core-shell nanocomposites via polycondensation

Al-Hussaini, Ayman S.; Eltabie, Kareem R; Rashad, Mohamed E.E.

doi:10.1016/j.polymer.2016.08.104

Cited by 37 publications

(15 citation statements)

References 57 publications

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“…This behavior is favorable for enhancing the quantum efficiency as the separation efficiency between the hole and electron increases. The synergetic factor ( f ) can be calculated based on the apparent first-order kinetics (see Supporting Information Equation 2) as , where k C/T is the first-order rate constant of PoPD/TiO 2 and k T is the first-order rate constant of TiO 2 43 . Based on the apparent first-order kinetic constants of the degradation of MB from Table 2, the synergetic factors of the PoPD/TiO 2 nanocomposites are 0.86 for P/T(1/6), 1.10 for P/T(1/5), 1.57 for P/T(1/4), 0.95 for P/T(1/2), 0.38 for P/T(1/1), 1.00 for P/T(2/1), 1.38 for P/T(3/1), and 0.81 for P/T(4/1).…”

Section: Resultsmentioning

confidence: 99%

Highly-efficient photocatalytic degradation of methylene blue by PoPD-modified TiO 2 nanocomposites due to photosensitization-synergetic effect of TiO2 with PoPD

Yang

Dong

Cui

et al. 2017

Sci Rep

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Poly-o-phenylenediamine modified TiO2 nanocomposites were successfully synthesized via an ‘in situ’ oxidative polymerization method. The modified nanocomposites were characterized by BET, XRD, TEM, FT-IR, TGA, XPS, EA and UV-Vis DRS. The photocatalytic degradation of methylene blue was chosen as a model reaction to evaluate the photocatalytic activities of TiO2 and PoPD/TiO2. The results indicated that PoPD/TiO2 nanocomposites exhibited good photocatalytic activity and stability. The photocatalytic activity of PoPD/TiO2 increased as the initial pH increased because of electrostatic adsorption between the photocatalyst and MB as well as the generation of ·OH, whereas it exhibited an earlier increasing and later decreasing trend as the concentration of the photocatalyst increased owing to the absorption of visible light. The photocatalytic stability of the PoPD/TiO2 nanocomposite was dependent on the stability of its structure. Based on radical trapping experiments and ESR measurements, the origin of oxidizing ability of PoPD/TiO2 nanocomposites on photocatalytic degradation of MB was proposed, which taking into account of ·OH and ·O2 − were the first and second important ROS, respectively. The possible photocatalytic mechanism and photocatalytic activity enhanced mechanism has been proposed, taking into account the photosensitization effect and synergetic effect of TiO2 with PoPD.

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Section: Resultsmentioning

confidence: 99%

Highly-efficient photocatalytic degradation of methylene blue by PoPD-modified TiO 2 nanocomposites due to photosensitization-synergetic effect of TiO2 with PoPD

Yang

Dong

Cui

et al. 2017

Sci Rep

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“…The proportion of quinoid units is fundamentally less than the proportion of benzenoid units in both PAPDA‐I and TiO 2 @PAPDA‐II to TiO 2 @PAPDA‐VI. This is interpreted as an obvious alteration of the intensity of the quinoid band to the benzenoid band and reflects the oxidation degree of the polymer chain . The bands registered at 1230–1237 and 1306–1308 cm −1 are a result of C–N vibrations of the benzenoid–quinoid–benzenoid sequence .…”

Section: Resultsmentioning

confidence: 96%

“…New developments in polymeric composites and nanocomposites are steadily growing and these products are among the largest potential material categories, which can deal with various challenges generated from the market . The composites and nanocomposites are quite often less expensive, lighter or stronger compared to traditional materials, but the demands and needs become more diverse and complex.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of core–shell nanocomposites with enhanced photocatalytic efficacy

Al-Hussaini

Eltabie

Hassan

2018

Polymer International

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The current study establishes the unprecedented involvement in the evolution and production of novel core-shell nanocomposites composed of nanosized titanium dioxide and aniline-o-phenylenediamine copolymer. TiO 2 @copoly(aniline and o-phenylenediamine) (TiO 2 @PANI-o-PDA) core-shell nanocomposites were chemically synthesized in a molar ratio of 5:1 of the particular monomers and several weights of nano-TiO 2 via oxidative copolymerization. The construction of the TiO 2 @PANI-o-PDA core-shell nanocomposites was ascertained from Fourier transform IR spectroscopy, UV-visible spectroscopy and XRD. A reasonable thermal behavior for the original copolymer and the TiO 2 @PANI-o-PDA core-shell nanocomposites was investigated. The bare PANI-o-PDA copolymer was thermally less stable than the TiO 2 @PANI-o-PDA nanocomposites. The core-shell feature of the nanocomposites was found to have core and shell sizes of 17 nm and 19-26 nm, respectively. In addition, it was found that the addition of a high ratio of TiO 2 nanoparticles increases the electrical conductivity and consequently lowers the electrical resistivity of the TiO 2 @PANI-o-PDA core-shell nanocomposites. The hybrid photocatalysts exhibit a dramatic photocatalytic efficacy of methylene blue degradation under solar light irradiation. A plausible interpretation of the photocatalytic degradation results of methylene blue is also demonstrated. Our setup introduces a facile, inexpensive, unique and efficient technique for developing new core-shell nanomaterials with various required functionalities and colloidal stabilities.

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“…The TEM images of TiO 2 , TiO 2 /PAni, and TiO 2 /PAni/GO are shown in Figure . It could be morphologically spherical with the average particle size of 100 nm …”

Section: Resultsmentioning

confidence: 99%

Synthesis, Characterization of Titania/Polyaniline/GO Nanocomposites, and Its Photocatalytic Activity Under UV‐Visible Light

Kumar

Pandey

2018

Macromolecular Symposia

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In the present study, to prepare the TiO2, TiO2/PAni, and TiO2/PAni/GO nanocomposites wet chemical method and they are used as photocatalyst for the photodegradation of Vitoria Blue B dye. The prepared TiO2, TiO2/PAni, and TiO2/PAni/GO are subjected to XRD analysis, which gives the information about the presence of phase rutile and anatase both phases are present in the samples. The SEM and TEM of the prepared samples are shown in the particles morphology. The prepared samples are found in nanodiamension. The Photocatalytic degradation of Vitoria Blue B dye is done at different condition of concentration of dye, time of illumination pH, and dose of photocatalyst. The % photodegradation efficiency of Vitoria Blue B dye occur efficiently with TiO2, TiO2/PAni, and TiO2/PAni/GO and highest for TiO2/PAni/GO.

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One-pot modern fabrication and characterization of TiO2@terpoly(aniline, anthranilic acid and o-phenylenediamine) core-shell nanocomposites via polycondensation

Cited by 37 publications

References 57 publications

Highly-efficient photocatalytic degradation of methylene blue by PoPD-modified TiO 2 nanocomposites due to photosensitization-synergetic effect of TiO2 with PoPD

Highly-efficient photocatalytic degradation of methylene blue by PoPD-modified TiO 2 nanocomposites due to photosensitization-synergetic effect of TiO2 with PoPD

Fabrication of core–shell nanocomposites with enhanced photocatalytic efficacy

Synthesis, Characterization of Titania/Polyaniline/GO Nanocomposites, and Its Photocatalytic Activity Under UV‐Visible Light

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