ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Green synthesis, characterization and application on the proanthocyanidins-functionalized Fe₃O₄ @ Ag nanoparticles

Yamei Lin, Hongxin Zhi, Shengkai Liu, Boyu Chen, Yujie Fu, and Zhiguo Liu

Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, People’s Republic of China

E-mail: zguoliu@nefu.edu.cn

Received: 21 September 2022  Accepted: 1 December 2022

Abstract:

Proanthocyanidins-functionalized Fe₃O₄ @ Ag nanoparticles (Fe₃O₄ @ AgNPs) were synthesized by one-step hydrothermal method wherein silver nanocrystals were grown in situ on the surface of Fe₃O₄ nanoparticles with the assistance of proanthocyanidins. The morphology and structure of Fe₃O₄ @ AgNPs were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier-transform infrared spectrometer (FTIR), UV–Vis spectrophotometer (UV–Vis), X-ray powder diffractometer (XRD), and physical property measurement system (PPMS). The characterization results indicated that sliver nanocrystals were deposited on the surface of Fe₃O₄ nanoparticles to form spherical and uniformly dispersed Fe₃O₄ @ AgNPs. Moreover, the Fe₃O₄ @ AgNPs had a high magnetic response, which can be recovered from the environment. The antibacterial activity of the Fe₃O₄ @ AgNPs against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and Candida albicans (C. albicans) was investigated. The results confirmed that the Fe₃O₄ @ AgNPs had broad-spectrum antibacterial activity. At the same time, the adsorption property of the nanoparticles for heavy metal ions Cu²⁺, Pb²⁺, and Cd²⁺ was also studied. The results showed that pH and incubation time played an essential role in the removal of heavy metal ions, and the nanoparticles had excellent removal efficiency. The multifunctional nanomaterial Fe₃O₄ @ AgNPs prepared by this study have the potential to apply in the biomedical and water disinfection fields.

Keywords: Proanthocyanidins; Fe3O4 @ AgNPs; Antibacterial; Heavy metal ions

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02614-1

Chemical Papers 77 (4) 2115–2124 (2023)