Abstract
The present investigation aims to remove Cr(VI) by PPynt@NH2-MIL-125 nanocomposite material under visible light irradiation.In this paper, a new photocatalyst material was prepared by using traditional conductive polymer polypyrrole nanotube (PPynt) and MOFs (NH2-MIL-125), and was characterized by Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), XPS, ultraviolet-visible diffuse reflectance spectroscopy (UV–VIS/DRS), and transmission electron microscopy (TEM). PPynt is also conducive to the separation and transferring of charge carriers, as well as the improvement of activity because the conductivity of PPynt provides a good electron transport path. The result shows that 5% PPynt@NH2-MIL-125 has superior photocatalytic activity and a 99.02% Cr(VI) reduction. On this basis, we systematically studied the effect of different pH and concentrations on the reduction system.
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