Latif & Khan (2024) Electrochemical investigation of Pd-Au/BC nanocomposite-biochar and their photocatalytic and energy storage applications. Engineering Science and Technology. https://doi.org/10.1016/j.jestch.2024.101714

Researchers Salman Latif and Zia Ul Haq Khan have introduced a promising Pd-Au/BC nanocomposite in the latest edition of Engineering Science and Technology, an International Journal. This innovative material showcases remarkable potential for both photocatalysis and energy storage applications.

The study focuses on the synthesis and detailed characterization of this nanocomposite. Techniques such as UV/Vis spectroscopy, FTIR, XRD, SEM, XPS, and BET analyses were employed to confirm its properties. Electrochemical investigations using cyclic voltammetry revealed specific capacitances ranging from 150 to 690 F g−1 at various current densities. The nanocomposite’s electrochemical behavior was further demonstrated through distinct reduction and oxidation peaks observed during cyclic voltammetry cycles.

A significant finding of this research is the nanocomposite’s ability to degrade Congo red dye under visible light, highlighting its photocatalytic efficiency. This degradation process is facilitated by the generation of hydroxyl radicals, a result of the electrochemical reactions. Additionally, the nanocomposite demonstrated consistent functionality as a supercapacitor up to a voltage threshold of 0.72 V, showing nonlinear symmetric charge and discharge profiles at expanded voltage windows.

The suppression of electron-hole recombination in the nanocomposite enhances its responsiveness to visible light, which is critical for its photocatalytic applications. Furthermore, anodic peaks at various potentials indicate strong electrocatalytic activity.

Overall, this study presents the Pd-Au/BC nanocomposite as a highly effective material for environmental remediation through photocatalysis and for advanced energy storage solutions, combining superior visible light activity with robust electrochemical performance.