Synthesis and Catalytic and Biological Activities of Silver and Copper Nanoparticles Using Cassia occidentalis

Autor: Manjul Gondwal, Geeta Joshi nee Pant
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: International Journal of Biomaterials, Vol 2018 (2018)
Druh dokumentu: article
ISSN: 1687-8787
1687-8795
DOI: 10.1155/2018/6735426
Popis: An ecofriendly and green method for the synthesis of silver and copper nanoparticles has developed using aqueous leaves extract of Cassia occidentalis. The formation of AgNPs and CuNPs was monitored by measuring the UV-Vis spectra. The morphology and crystalline phase of the metal nanoparticles were determined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM) with X-ray energy dispersive spectrophotometer (EDX) and X-ray diffraction (XRD). The synthesized metal nanoparticles were generally found to be spherical and oval in shape. The AgNPs and CuNPs showed highly potent antibacterial activity against Escherichia coli and Salmonella typhi bacteria, respectively. The CuNPs showed higher radical scavenging activity than AgNPs. The AgNPs showed lower haemolysis (1.7%) exhibiting lesser toxicity as compared to CuNPs. The CuNPs have better catalytic ability for the reduction of 4-nitrophenol and 2-nitrophenol as compared to AgNPs.
Databáze: Directory of Open Access Journals
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje