Facile synthesis of PPy-NiO-MoO3 composites with superb thermal stability, high reusability for MB degradation, and efficient supercapacitors

초록

Simple fabrication of PPy-NiO-MoO3 composites with their superior photocatalytic activity and excellent electrochemical properties is reported. FTIR, UV-Visible, and PL spectroscopy revealed a possible interaction of NiO and MoO3 with PPy. Crystallite sizes of about 60.93, 8.12, 1.22, and 2.21 nm were obtained for lower loading of NiO and MoO3. BET data revealed a better surface area of 7.319 m2g(-1)for the composites synthesized at the lowest loading of NiO-MoO3, suggesting their better efficiency in methylene blue (MB) degradation. The best MB degradation efficiency (96%) was achieved at pH 11, concentration of MB: 5 ppm, and catalyst dose: 0.05 g/L. PPy-NiO-MoO3 composites are reusable up to 4 times. Cyclic voltametric (CV) and electrochemical impedance spectroscopy (EIS) data exhibited superb supercapacitor enactment of the composites compared to PPy. All the data make the PPy-NiO-MoO3 composites a prospective photocatalyst for the remediation of organic contaminants from wastewater and suitable for energy storage applications.

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