GREEN SYNTHESIS OF SILVER NANOPARTICLES AND THEIR SPECTRAL PROPERTIES

نویسندگان

چکیده

Spherical silver nanoparticles were synthesized by the chemical condensation method using aloe vera or chamomile extracts as a reducing agent. Depending on type of and its concentration, size AgNpcs varied from 7 to 50 nm simply adjusting ratio starting reagents. These show properties due presence carbonyl compounds in their composition, particular organic acids. It is shown that regu­lation concentrations synthesis conditions allows control particle size. A change affects position surface plasmon resonance band, therefore optical studied systems. has been proven do not require additional stabilization. Agglomeration processes occur only with significant increase concentration heating time.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Silver nanoparticles: green synthesis and their antimicrobial activities.

This review presents an overview of silver nanoparticles (Ag NPs) preparation by green synthesis approaches that have advantages over conventional methods involving chemical agents associated with environmental toxicity. Green synthetic methods include mixed-valence polyoxometallates, polysaccharide, Tollens, irradiation, and biological. The mixed-valence polyoxometallates method was carried ou...

متن کامل

Green Synthesis of Silver Nanoparticles with Allium paradoxum Extract and Evaluation of their Antibacterial Activities

  Background and purpose: Microbial resistance against antibiotics is increasingly growing, therefore, it is necessary to develop new remedies. Silver nanoparticles have significant antibacterial properties and synthesis of silver nanoparticles mediated by plant extracts could be considered as an alternative in treatment in various infections. Materials and methods: In this study, silver nano...

متن کامل

Green synthesis of silver nanoparticles using Cuminum cyminum leaf extract and evaluation of their biological activities

The aim of this study is to determine some phytochemical contents, to synthesize silver nanoparticles AgNPs using Cuminum cyminum (C. cyminum) leaf extract, to study the effects of different conditions on the rate of synthesis, and to evaluate their antibaterial and antifungal activities. AgNPs were synthesized using C. cyminum leaf extract as bioreducer agent and aqueous silver nitrate solutio...

متن کامل

Biological Synthesis of Silver Nanoparticles and their Functional Properties

A nanoparticle is defined as a small object between 1 and 100 nanometer in size and has a large surface to volume ratio. Silver nanoparticles (AgNPs) could be synthesized using various chemical and physical processes. However, these methods lead to hazardous by-products. In the recent past, AgNPs are produced by biological means. The size, shape and composition of AgNPs have significant effect ...

متن کامل

Green Synthesis of Silver Nanoparticles using Bidens Frondosa Extract and their Tyrosinase Activity

Herbal nanoparticles gain lot of attention because of their pharmaceutical importance. The present study reports the eco-friendly synthesis, characterization and their tyrosinase activity of silver nanoparticles (AgNPs) using aqueous extract of Bidens frondosa. The appearance of brown color indicated the formation of B. frondosa AgNPs. The Formation of AgNPs was confirmed by UV–Vis spectroscopy...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Ukraïns?kij hìmì?nij žurnal

سال: 2022

ISSN: ['2708-1281', '2708-129X']

DOI: https://doi.org/10.33609/2708-129x.88.09.2022.41-51