نتایج جستجو برای: silver nitrate

تعداد نتایج: 76761  

Journal: :avicenna journal of medical biotechnology 0

recently there has been fabulous excitement in the nano-biotechnological area for the study of nanoparticles synthesis using some natural biological system, which has led the growth advanced nanomaterials. this intention made us to assess the biologically synthesized silver nanoparticles from the leaf of suaeda monoica (s.monoica) using 1 mm silver nitrate. the leaf extract of s.monoica incubat...

2013
Cynthia Mason Singaravelu Vivekanandhan Manjusri Misra Amar Kumar Mohanty

A novel switchgrass (Panicum virgatum) extract mediated green process was demonstrated for the synthesis of silver nanoparticles from silver nitrate solution at ambient temperature. UV-visible spectroscopic analysis indicates the rapid reduction of silver (Ag) ions by swithgrass extract. The silver nanoparticles began to form at 15 min and the reduction reaction was completed within 2 hours. Sy...

Biological synthesis of metallic nanoparticles is considered as a fast, eco-friendly, affordable and easily scalable technology. Also, the nanoparticles produced by plants are very stable. In this study, the focus is on the synthesis of silver nanoparticles using extract of eryngium campestre. The effective parameters such as concentration of silver nitrate, pH, temperature and time, size and m...

2010
Yukun Han Hai Xiao Hai-Lung Tsai

A simple and fast method to fabricate nanostructured substrates with silver nanoparticles over a large area for surface-enhanced Raman scattering (SERS) is reported. The method involves two steps: 1) dip the substrate into a silver nitrate solution for a few minutes, remove the substrate from the solution, and then air dry and 2) process the silver nitrate coated substrate by femtosecond (fs) l...

Journal: :Journal of the American Chemical Society 2004
Ryan M Kramer Chester Li Daniel C Carter Morley O Stone Rajesh R Naik

Self-assembled particles of genetically engineered human L subunit ferritin expressing a silver-binding peptide were used as nanocontainers for the synthesis of silver nanoparticles. The inner cavity of the self-assembled protein cage displays a dodecapeptide that is capable of reducing silver ions to metallic silver. This chimeric protein cage when incubated in the presence of silver nitrate e...

Journal: :Chemical reviews 2013
Sonja Eckhardt Priscilla S Brunetto Jacinthe Gagnon Magdalena Priebe Bernd Giese Katharina M Fromm

Silver, known in metallic form since antiquity, has very early been recognized by mankind for its antimicrobial properties, a phenomenon observed, for example, in the context of drinking water (a silver coin in a well), food (silver cutlery, water storage recipients), and medicine (silver skull plates, teeth). Silver compounds were also shown to be useful. For example, dilute solutions of silve...

2012
GUOQIANG ZHOU WENYING WANG

A simple and inexpensive, single step synthesis of silver nanoparticles was achieved using sodium citrate both as a reducing and capping agent. Silver nanoparticles were synthesized by injecting sodium citrate solution into the solution of silver nitrate at high temperature. The synthetic process was carried out in aqueous solution, making the method versatile and ecofriendly. The synthesized s...

2016
Rakesh Sharma Ravi Kumar Sahil Mittal Amandeep Kaur

NTRODUCTION Silver is well known as an antiseptic agent (silver nitrate and silver sulphadiazine) for ages. However, the delivery system in the form of a salt has been a limiting factor for its successful and widespread biological use. The development of nanochemistry has produced micro fine particles which increase silver's solubility and releases silver ions in concentration of 70-100 ppm. Na...

Journal: :journal of chemical health risks 0
hashem akhlaghi department of chemistry, sabzevar branch, islamic azad university, sabzevar, iran sedighe sadat akhlaghi assistant professor, department of nephrology, shahid beheshti medical university, tehran, iran

an aqueous extract of pimpinella anisum was used for green synthesis of silver nanoparticles by bio reduction of an aqueous solution of silver nitrate. silver nanoparticles were characterized by uv–vis spectrometry, fourier transform infrared spectroscopy (ftir), x-ray diffraction (xrd) analysis, scanning electron microscopy (sem) and energy-dispersive x-ray analysis (edax). the increase in abs...

2012
Kamel AM Eid Hassan ME Azzazy

BACKGROUND The synthesis of anisotropic silver nanoparticles is a time-consuming process and involves the use of expensive toxic chemicals and specialized laboratory equipment. The presence of toxic chemicals in the prepared anisotropic silver nanostructures hindered their medical application. The authors have developed a fast and inexpensive method for the synthesis of three-dimensional hollow...

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