Vigna radiata Impregnated Zero-Valent CuAg NPs: Applications in Nitrophenols Reduction, Dyes Discoloration and Antibacterial Activity

• Published in: Journal of cluster science Vol. 33; no. 4; pp. 1407 - 1416
• Main Authors: Ali, Hani S. H. Mohammed, Anwar, Yasir, Khan, Shahid Ali
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2022; Springer Nature B.V
• Subjects: Acids; Aqueous solutions; Biomass; Catalysis; Chemistry; Chemistry and Materials Science; Copper; Discoloration; Dyes; Inorganic Chemistry; Methylene blue; Nanochemistry; Nanoparticles; Nitrophenol; Original Paper; Peptides; Physical Chemistry; Pollutants; Polyphenols; Reduction; Staphylococcus infections; Dyes degradation; CuAg/VR NPs; inhibition; Nitrophenols reduction
• ISSN: 1040-7278; 1572-8862
• DOI: 10.1007/s10876-021-02067-8

The synthesis of Vigna radiata (VR) infused CuAg NPs (CuAg/VR), is discussed here for various applications. The CuAg/VR nanoparticles was synthesized by treating the VR impregnated Cu(II) and Ag(I) with NaBH 4 in aqueous medium. The CuAg/VR was characterized through FESEM, EDS, XRD, FTIR and TGA analysis. The catalyst was applied for the reduction/degradation of eight model pollutants i.e. nitrophenol isomers 2/3/4 nitrophenols (2/3/4NP), 2,4-dinitrophenol (2,4-dnip), Congo red dye (CR), methyl orange (MO), methylene Blue (MB), and rhodhamine B (RB). The highest rate constant k app based on pseudo-1 st order kinetics was recorded for 4-nirophenol (4NP) among the others which is 2.8 × 10 –1  min −1 with turn over frequency (TOF) of 0.056 h −1 for 4NP. The order of nitrophenols reactivity is 2NP > 3NP > 4NP which are explained on the basis of inductive effect. Among all the nitrophenols and dyes the highest k app was recorded for RB which is 8.1 × 10 –1  min −1 . Similarly, simultaneous removal of MB and RB dyes indicated 98% removal of MB and 9% removal of RB dye which shows the selective discoloration of MB dye. At 75 ng/mL the zone of inhibition of CuAg/VR against Methicillin-resistant Staphylococcus aureus ( MRSA ), was found 26 mm.