The roles of green chemistry in nanotechnology and nanoscience fields are very significant the synthesis diverse nanomaterials. Herein, we report a method for synthesized colloidal silver nanoparticles (Ag NPs) polymeric media. Ag NPs were an aqueous solution using nitrate, polyethylene glycol (PEG), β-d-glucose as precursor, stabilizer, reducing agent, respectively. properties studied at different reaction times. ultraviolet-visible spectra excellent agreement with obtained nanostructure...

Synthesis, characterization, and antimicrobial properties of copper nanoparticles Muhammad Sani Usman,1 Mohamed Ezzat El Zowalaty,2,5 Kamyar Shameli,1,3 Norhazlin Zainuddin,1 Salama,4 Nor Azowa Ibrahim,1 1Department Chemistry, Faculty Science, 2Laboratory Vaccines Immunotherapeutics, Institute Bioscience, Universiti Putra Malaysia, Selangor, Malaysia; 3Materials Energy, Research Center, Karaj, Iran; 4Faculty Pharmacy, UiTM, Puncak Alam, 5Department Environmental Health, Public Health...

In this study, a simple, rapid, and eco-friendly green method was introduced to synthesize magnetite nanoparticles (Fe3O4-NPs) successfully. Seaweed Kappaphycus alvarezii (K. alvarezii) employed as reducing stabilizing agents. The synthesized Fe3O4-NPs were characterized with X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FT-IR), transmission electron microscopy (TEM) techniques. planes at (220), (311), (400), (422), (511), (440), (533)...

Keywords: silver nanoparticles, Curcuma longa , biosynthesis, green synthesis, transmission electron microscopy

Different biological methods are gaining recognition for the production of silver nanoparticles (Ag-NPs) due to their multiple applications. One most important applications Ag-NPs is use as an anti-bacterial agent. The plants in synthesis emerges a cost effective and eco-friendly approach. In this study biosynthesis using Vitex negundo L. extract its antimicrobial properties has been reported. resulting particles characterized transmission electron microscopy (TEM), X-ray diffraction (XRD)...

In this study, antibacterial characteristic of silver/poly (lactic acid) nanocomposite (Ag/PLA-NC) films was investigated, while silver nanoparticles (Ag-NPs) were synthesized into biodegradable PLA via chemical reduction method in diphase solvent. Silver nitrate and sodium borohydride respectively used as a precursor reducing agent the PLA, which acted polymeric matrix stabilizer. Meanwhile, properties Ag/PLA-NCs studied function Ag-NP weight percentages (8, 16, 32 wt% respectively),...

Anatase titanium dioxide nanoparticles (TNPs) are synthesized by a simple and cost‐effective process with without freshly water‐soluble egg white proteins (albumin) via sol‐gel method. The main advantage of using as gelling agent is that it can provide long‐term stability for preventing particles agglomeration. X‐ray diffraction FTIR results indicate the have only anatase structure presence any other phase impurities. Additionally, TNPs characterized number techniques such thermogravimetric...

Different biological methods are gaining recognition for the production of silver nanoparticles (Ag-NPs) due to their multiple applications. The use plants in green synthesis emerges as a cost effective and eco-friendly approach. In this study biosynthesis using Callicarpa maingayi stem bark extract has been reported. Characterizations were done different methods, which include; ultraviolet-visible spectroscopy (UV-Vis), powder X-ray diffraction (XRD), transmission electron microscopy (TEM),...

This study aims to investigate the influence of different stirring times on antibacterial activity silver nanoparticles in polyethylene glycol (PEG) suspension. The (Ag-NPs) were prepared by green synthesis method using agents, under moderate temperature at times. Silver nitrate (AgNO3) was taken as metal precursor while PEG used solid support and polymeric stabilizer. sizes nanosilver investigated against Gram–positive [Staphylococcus aureus] Gram–negative bacteria [Salmonella typhimurium...

Herein we report a synthesis of copper nanoparticles (Cu-NPs) in chitosan (Cts) media via chemical reaction method. The were synthesized an aqueous solution the presence Cts as stabilizer and CuSO(4)·5H(2)O precursor. proceeded with addition NaOH pH moderator, ascorbic acid antioxidant hydrazine( )as reducing agent. characterization prepared NPs was done using ultraviolet-visible spectroscopy, which showed 593 nm band. Field Emission Scanning Electron Microscope (FESEM) images also observed,...

Introduction: Fe 3 O 4 nanoparticles (Fe NPs) with multiple functionalities are intriguing candidates for various biomedical applications. Materials and Methods: This study introduced a simple green synthesis of NPs using low-cost stabilizer plant waste extract rich in polyphenols content well-known antioxidant property as well anticancer ability to eliminate colon cancer cells. Herein, were fabricated via facile co-precipitation method the crude Garcinia mangostana fruit peel at different...

Silver nanoparticles (Ag-NPs) have been successfully prepared with simple and "green" synthesis method by reducing Ag(+) ions in aqueous gelatin media the absence of glucose as a agent. In this study, was used for first time stabilizing The effect temperature on particle size Ag-NPs also studied. It found that increasing is decreased. obtained solutions smaller than gelatin-glucose solutions, which can be related to rate reduction reaction. X-ray diffraction, ultraviolet-visible spectra,...

Green synthesis of silver/montmorillonite/chitosan bionanocomposites using the UV irradiation method and evaluation antibacterial activity Kamyar Shameli1, Mansor Bin Ahmad1, Wan Md Zin Yunus1, Abdolhossein Rustaiyan2, Nor Azowa Ibrahim1, Mohsen Zargar3, Yadollah Abdollahi41Department Chemistry, Faculty Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia; 2Department Science Research Campus, Islamic Azad University, Tehran, Iran; 3Faculty Food Biotechnology, 4Institute Advanced...

In this research, silver nanoparticles (AgNPs) were synthesized in chitosan (Cts), Cts/gelatin and gelatin suspensions using a chemical reducing agent. Cts used as natural stabilizers solid support, whereas AgNO(3) was the precursor. Sodium borohydride (NaBH(4)) The properties of AgNPs Cts, bionanocomposites (BNCs) studied terms their surface plasmon resonance, crystalline structure, average diameter size, particle distributions, topography functional groups. All samples characterized by...

This paper presents the green synthesis of silver nanoparticles (Ag NPs) in aqueous medium. method was performed by reducing AgNO(3) different stirring times reaction at a moderate temperature using agents, chitosan (Cts) and polyethylene glycol (PEG). In this work, nitrate (AgNO(3)) used as precursor while Cts PEG were solid support polymeric stabilizer. The properties Ag/Cts/PEG nanocomposites (NCs) studied under reaction. developed NCs then characterized ultraviolet-visible (UV-Vis)...

Using the chemical reduction method, silver nanoparticles (Ag NPs) were effectively synthesized into zeolite framework in absence of any heat treatment. Zeolite, nitrate, and sodium borohydride used as an inorganic solid support, a precursor, agent, respectively. Silver ions introduced porous lattice by ion-exchange path. After process, Ag NPs formed framework, with mean diameter about 2.12-3.11 nm. The most favorable experimental condition for synthesis Ag/zeolite nanocomposites (NCs) is...

Abstract: Silver nanoparticles (AgNPs) of a small size were successfully synthesized using the wet chemical reduction method into lamellar space layer montmorillonite/chitosan (MMT/Cts) as an organomodified mineral solid support in absence any heat treatment. AgNO 3 , MMT, Cts, and NaBH 4 used silver precursor, support, natural polymeric stabilizer, agent, respectively. MMT was suspended aqueous /Cts solution. The interlamellar limits changed (d-spacing = 1.24–1.54 nm); therefore, AgNPs...

Keywords: silver nanoparticles, montmorillonite, antibacterial activity, Mueller-Hinton agar

Synthesis of iron oxide nanoparticles has attracted increasing interest due to their importance in biomedical and technological applications. To investigate the ability Juglans regia (J. regia) green husk extract size control, they were synthesized through co-precipitation method with J. without it. For both tests, other experimental conditions same. According High-resolution transmission electron microscopy, mean diameter standard deviation regia/iron using 12.60 ± 2.87 5.77 1.66 nm...