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- W3167601425 abstract "In the current study, an in-situ oxidative polymerization method was used to synthesize polyaniline-coated tungsten trioxide biphasic composite ([email protected]3). The as-developed composite material properties were elucidated using different characterization tools such as X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), N2 sorption-desorption isotherm, and X-ray photoelectron spectroscopy (XPS). The [email protected]3 was further applied to remove hexavalent chromium (Cr(VI)) from aqueous solutions. The results demonstrated that the optimal removal efficacy was achieved at pH 2. Meanwhile, the pseudo-second-order kinetic and isotherm of the Langmuir model were fitted for Cr(VI) adsorption. Cr(VI) amount of 549.37 mg·g−1 was the maximum capacity of adsorption attained for [email protected]3, which is significantly higher than that of existing adsorbents. From a thermodynamic point of view, the Cr(VI) adsorption process occurred spontaneously and endothermically. Importantly, [email protected]3 still exhibited an excellent adsorption capability after five regeneration cycles, indicating the potential reusability of the [email protected]3 composite. XPS analysis of [email protected]3 surface after adsorption of Cr(VI) confirmed its adsorption and concomitant reduction into Cr(III) ions. The transfer of mass phenomenon, electrostatic attraction, and reduction reaction were the primary processes for Cr(VI) ions elimination. These findings revealed that the synthesized [email protected]3 exhibited a high potential for wastewater treatment containing Cr(VI)." @default.
- W3167601425 created "2021-06-22" @default.
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- W3167601425 date "2021-10-01" @default.
- W3167601425 modified "2023-10-14" @default.
- W3167601425 title "Development of a novel PANI@WO3 hybrid composite and its application as a promising adsorbent for Cr(VI) ions removal" @default.
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- W3167601425 doi "https://doi.org/10.1016/j.jece.2021.105885" @default.
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