Abstract
This paper reports on the eco-friendly synthesis of gold nanoparticles (AuNPs) using the seaweed Sargassum polycystum C. Agardh extract. Biological synthesis for nanoparticle using plants is gaining considerable interest among researchers as an eco-friendly alternative to conventional physical and chemical methods, as this approach eliminates the use of toxic chemicals. Synthesized AuNPs was monitored by UV-Vis spectroscopy and was found to be complete within 30 min. Confirmation of elemental gold was carried out by elemental mapping using different physical techniques such as Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX), Scanning electron microscopy (SEM). The bio reduced AuNPs exhibited remarkably good anti-bacterial activity against pathogens specifically Pseudomonas aeruginosa (20 mm) which is more susceptible. The elaborate experimental evidences support that the seaweed Sargassum polycystum C. Agardh extract can provide an environmentally benign rapid route for synthesis of AuNPs that can be applied for various purposes.
Highlights
Synthesis of gold nanoparticles (AuNPs) has gained immense significance during the last few years due to their catalytic, optical, and electrical properties [1]
The peak observed at 540 nm confirmed the synthesis of AuNPs as it is in agreement with the previous reports [10]
The peak observed at 532 nm confirmed the synthesis of AuNPs as it is in agreement with the previous reports
Summary
Synthesis of gold nanoparticles (AuNPs) has gained immense significance during the last few years due to their catalytic, optical, and electrical properties [1]. The synthesis of AuNPs using an eco-friendly method is important to address the growing concerns on the overall toxicity of nanoparticles for medical and biotechnological applications. AuNPs have been considered important due to their unique and tunable surface plasmon resonance (SPR) property and their applications in biomedical science including drug delivery, tissue/tumour imaging, photo thermal therapy, immune chromatography, and identification of pathogens in clinical specimens [2]. Most of the available chemical processes for synthesis of gold nanoparticles (AuNPs) involve toxic chemicals that get adsorbed on the surface, leading to adverse effects in medical applications. We demonstrated its antibacterial activity against various water borne pathogens
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
