In situ synthesis of RGO and CNT-templated diamond-shaped Fe-based metal-organic frameworks: Exploring their remarkable photocatalytic and antioxidant properties

Abstract

This research examines the antioxidant and photocatalytic capabilities of diamond-shaped RGO and CNT-doped Fe-based Metal-Organic Frameworks (MOFs), utilizing MIL-53 as the structural framework. A solvothermal method was used for the synthesis of diamond-shaped RGO and CNT-doped MOFs. MOFs structural properties were characterized using FTIR, Raman spectroscopy, FE-SEM, XPS, and p-XRD methods. UV–visible spectroscopy was utilized to analyze the photocatalytic performance and band gap measured as 2.62 eV at 474 nm for RGO-doped MOF and 2.33 eV at 531 nm for CNT-doped MOFs. Amido black 10B (AB10) dye was used to assess the sample’s photocatalytic efficacy in the presence and absence of H₂O₂. After 40 min of sunshine exposure, the RGO-doped MOFs-H₂O₂ combination revealed 88.15 % photocatalytic degradation capability, while the CNT-doped MOFs demonstrated 98.42 %. To determine the antioxidant activity of the material, a DPPH test was performed. At 400 μg/ml, RGO-doped MOFs showed an EC50 value of 183.89 and 77.81 % inhibition, while CNT-doped MOFs showed 153.59 and 92 % inhibition.