Mono- and Bimetallic Nanoparticles for Catalytic Degradation of Hazardous Organic Dyes and Antibacterial Applications

Overview

Journal ACS Omega

Publisher American Chemical Society

Specialty Chemistry

Date 2022 Oct 10

PMID 36211055

Authors

Shilpa Molakkalu Padre

S Kiruthika

Shridhar Mundinamani

Ravikirana

Srivathsava Surabhi

Jong-Ryul Jeong

Kunabevu Mallikarjunappa Eshwarappa

Mudiyaru Subrahmanya Murari

Vignesh Shetty

Mamatha Ballal

Gurumurthy S C

Affiliations

Soon will be listed here.

Abstract

In the present work, gold (Au), silver (Ag), and copper (Cu) based mono- and bimetallic NPs are prepared using a cost-effective facile wet chemical route. The pH for the synthesis is optimized in accordance with the optical spectra and supported by the finite difference time domain simulation studies. FESEM and TEM micrographs are used to analyze the morphology of the prepared nanoparticles. TEM images of bimetallic nanoparticles (BMPs) verified their bimetallic nature. XRD studies confirmed the formation of fcc-structured mono- and bimetallic NPs. Photoluminescence studies of the as-synthesized NPs are in good agreement with the previous publications. These synthesized NPs showed enhanced catalytic activity for the reduction/degradation of 4-nitrophenol, rhodamine B, and indigo carmine dyes in the presence of sodium borohydride (NaBH) compared to NaBH alone. For the reduction of 4-nitrophenol, Au, Cu, and CuAg nanoparticles exhibited good catalytic efficiency compared to others, whereas for the degradation of rhodamine B and indigo carmine dyes the catalytic efficiency is comparatively high for CuAg BMPs. Furthermore, the antibacterial assay is carried out, and Ag NPs display effective antibacterial activity against , ser. Typhimurium, , , and .

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