Journal/Book/Patent Name: US Patent Application
Green Synthesis of Silver Nanoparticles using CMC Powder and Investigation of Its Antibacterial Activity
Hamed Ahari, Seyed Amirali Anvar, Maryam Ataee , Sima Moradi, Sogand Heydari , Hourieh Shalchi
Publication Date: July 20, 2023
Publisher: US Patent
Issue Number: Publication number: 20230226607
Abstract
The present invention is directed to a method to produce silver nanoparticles. The method includes the steps of dropwise addition of silver nitrate solution to a carboxymethyl cellulose solution (1%) while stirring. The solution is subjected to ultrasonic irradiation for 30 minutes. The first indication of silver nanoparticles being synthesized can be change in the color of the solution to yellowish-brown after Ultrasonication. The solution can thereafter be subjected to microwave irradiations. After the predetermined duration, the produced silver nanoparticles can be separated from the solution. The nanoparticles can be washed and freeze dried.
Description
FIELD OF INVENTION
The present invention relates to a method for production of nanoparticles, and more particularly, to methods for the synthesis of silver nanoparticles.
BACKGROUND
Silver nanoparticles have gained much attention nowadays for chemical and biomedical applications. Antimicrobial coating of silver nanoparticles has been used for a range of household items including clothing.
Silver nanoparticles have been known to be produce from numerous chemical methods that uses toxic chemicals. Considering the increasing use of the silver nanoparticles in various fields including chemical and biomedical, a need is appreciated for a green method for producing silver nanoparticles.
SUMMARY OF THE INVENTION
The principal object of the present invention is therefore directed to a method for producing silver nanoparticles that is environment friendly.
It is an object of the present invention that the method does not use toxic chemicals.
It is an additional object of the present invention that the method has improved atom economy.
It is another object of the present invention that the method is cost efficient.
It is a further object of the present invention that the method generates lesser waste.
In one aspect, disclosed is a method for production of silver nanoparticles. The silver nanoparticles can be produced by dropwise adding a silver nitrate solution to a carboxy methyl cellulose solution.
These and other objects and advantages of the embodiments herein will become readily apparent from the following detailed description.