Fabrication of CuWO4@MIL-101 (Fe) nanocomposite for efficient OER and photodegradation of methylene blue

Abstract

The development of an efficient catalyst to meet the world's increasing energy demand and eliminate organic pollutants in water, is a concern of current researchers. In this article, a highly effective composite has been synthesized using the solvothermal approach, by incorporating CuWO4 nanoparticles into Fe-based MOF, Fe (BDC). The synthesized samples were analyzed further by some characterization techniques such as X-ray diffraction, Fourier transform infrared spectroscope (FTIR) and scanning electron microscopy. The highest catalytic activity for the oxygen evolution reaction was observed in the CuWO4@MIL-101(Fe) composite, which exhibited low overpotential 188 mV to obtained the current density of 10 mA cm−2, and a smaller Tafel slope of 40 mV dec−1. The nanocomposite CuWO4@MIL-101(Fe) material showed enhanced visible light absorption and maximum degradation of methylene blue up to 96.92 %. It has been found that this research promotes the development of an efficient MOF-based catalyst for OER and photocatalytic technology.

Keywords

• CuWO4@MIL-101(Fe)
• Nanocomposite
• Water splitting
• Oxygen evolution reaction
• Photodegradation of dye