RETRACTED: Pyto-Architechture of Ag, Au and Ag–Au bi-metallic nanoparticles using waste orange peel extract for enable carcinogenic Congo red dye degradation

• DOI: 10.1016/j.envres.2023.117625
• Publication Date: 2023-11-23T09:55:33Z
• Authors: B. Christina; K. Thanigaimani; R. Sudhakaran; S. Mohan; Natarajan Arumugam; Abdulrahman I. Al...; Sakkarapalayam M....
• Keywords: Bimetallic strip; Silver nanoparticle; Congo red; Methyl orange; Orange G

Ecologically inspired to develop silver, gold and silver/gold bimetallic nanoparticles from discarded orange peel extract. The plant-derived compounds included in discarded orange peel extract have been accountable for the development of Ag, Au and Ag-Au bimetallic nanoparticles, that might be used in the biosynthetic process. The qualitative assessment of developed silver, gold and silver/gold bimetallic nanoparticles has been performed by UV-visible, XRD pattern, FT IR analysis, TEM/HRTEM, EDX and BET isotherm analysis. In this investigation, the photocatalytic effect of developed silver, gold and silver/gold bimetallic nanoparticles on Congo red dye breakdown efficiency was achieved at 96%, 94%, and 99.2%, respectively. Due to prolonged electron-hole recombination process was investigated using UV irradiation and reused for up to 5 consecutive runs without significant loss of photocatalytic activity. Moreover, silver, gold, and silver/gold bimetallic nanoparticles manufactured in an environmentally benign manner could potentially contribute to the ecological cleanup.