A Flower-like InO Catalyst Derived via Metal-Organic Frameworks for Photocatalytic Applications.

The most pressing concerns in environmental remediation are the design and development of catalysts with benign, low-cost, and efficient photocatalytic activity. The present study effectively generated a flower-like indium oxide (InO-MF) catalyst employing a convenient MOF-based solvothermal self-assembly technique. The InO-MF photocatalyst exhibits a flower-like structure, according to morphology and structural analysis. The enhanced photocatalytic activity of the InO-MF catalyst for 4-nitrophenol (4-NP) and methylene blue (MB) is likely due to its unique 3D structure, which includes a large surface area (486.95 m g), a wide spectrum response, and the prevention of electron-hole recombination compared to InO-MR (indium oxide-micro rod) and InO-MD (indium oxide-micro disc). In the presence of NaBH and visible light, the catalytic performances of the InO-MF, InO-MR, and InO-MD catalysts for the reduction of 4-NP and MB degradation were investigated. Using InO-MF as a catalyst, we were able to achieve a 99.32 percent reduction of 4-NP in 20 min and 99.2 percent degradation of MB in 3 min. Interestingly, the conversion rates of catalytic 4-NP and MB were still larger than 95 and 96 percent after five consecutive cycles of catalytic tests, suggesting that the InO-MF catalyst has outstanding catalytic performance and a high reutilization rate.