نتایج جستجو برای: silver nanoparticles ag nps

تعداد نتایج: 180036  

2016
Md. Mamun Or Rashida Md. Shafiul Islam Md. Azizul Haque Md. Arifur Rahman Md. Tanvir Hossain Md. Abdul Hamid

Plants or natural resources have been found to be a good alternative method for nanoparticles synthesis. In this study, polyaniline coated silver nanoparticles (AgNPs) synthesized from Piper betle leaves extract were investigated for their antibacterial activity. Silver nanoparticles were prepared from the reduction of silver nitrate and NaBH4 was used as reducing agent. Silver nanoparticles an...

Journal: :Carbohydrate polymers 2015
Ana S Abreu M Oliveira Arsénio de Sá Rui M Rodrigues Miguel A Cerqueira António A Vicente A V Machado

Montmorillonite modified with a quaternary ammonium salt C30B/starch nanocomposite (C30B/ST-NC), silver nanoparticles/starch nanocomposite (Ag-NPs/ST-NC) and both silver nanoparticles/C30B/starch nanocomposites (Ag-NPs/C30B/ST-NC) films were produced. The nanoclay (C30B) was dispersed in a starch solution using an ultrasonic probe. Different concentrations of Ag-NPs (0.3, 0.5, 0.8 and 1.0mM) we...

Journal: :Environmental pollution 2013
Enzo Lombi Erica Donner Shima Taheri Ehsan Tavakkoli Åsa K Jämting Stuart McClure Ravi Naidu Bradley W Miller Kirk G Scheckel Krasimir Vasilev

The increasing use of silver (Ag) nanoparticles [containing either elemental Ag (Ag-NPs) or AgCl (AgCl-NPs)] in commercial products such as textiles will most likely result in these materials reaching wastewater treatment plants. Previous studies indicate that a conversion of Ag-NPs to Ag2S is to be expected during wastewater transport/treatment. However, the influence of surface functionality,...

2016
Yanxiao Zhao Xinhua Wang Zhiwei Wang Xiufen Li Yueping Ren

The increasing and wide application of silver nanoparticles (Ag NPs) has resulted in their appearance in wastewater. In consideration of their potential toxicity and environmental impacts, it is necessary to find effective technology for their removal from wastewater. Here, forward osmosis (FO) membrane was applied for Ag NPs removal from wastewater, and single and combined fouling of nanoparti...

2015
Vijay Patel David Berthold Pravin Puranik Miroslav Gantar

The aim of this study was to assess the ability of selected strains of cyanobacteria and microalgae to biosynthesize silver nanoparticles (Ag-NPs) by using two procedures; (i) suspending the live and washed biomass of microalgae and cyanobacteria into the AgNO3 solution and (ii) by adding AgNO3 into a cell-free culture liquid. Ag-NPs were biosynthesized by 14 out of 16 tested strains. In most o...

Journal: :Molecules 2011
Mohsen Zargar Azizah Abdul Hamid Fatima Abu Bakar Mariana Nor Shamsudin Kamyar Shameli Fatemeh Jahanshiri Farah Farahani

Different biological methods are gaining recognition for the production of silver nanoparticles (Ag-NPs) due to their multiple applications. One of the most important applications of Ag-NPs is their use as an anti-bacterial agent. The use of plants in the synthesis of nanoparticles emerges as a cost effective and eco-friendly approach. In this study the biosynthesis of silver nanoparticles usin...

2015
Hamza Simsir Nurettin Eltugral Selhan Karagoz

Surface modification and functionalization has been an important tool for scientists in order to open new frontiers in nanoscience and nanotechnology. Desired surface characteristics for the intended applications can be achieved with surface functionalization. In this work, the effect of water soluble ligands on the adsorption capabilities of silver nanoparticles onto AC which was synthesized f...

2014
Peddisetty Pardha-Saradhi Gupta Yamal Tanuj Peddisetty Peddisetty Sharmila Shilpi Nagar Jyoti Singh Rajamani Nagarajan Kottapalli S. Rao

Potential of root system of plants from wide range of families to effectively reduce membrane impermeable ferricyanide to ferrocyanide and blue coloured 2,6-dichlorophenol indophenol (DCPIP) to colourless DCPIPH2 both under non-sterile and sterile conditions, revealed prevalence of immense reducing strength at root surface. As generation of silver nanoparticles (NPs) from Ag+ involves reduction...

Journal: :jundishapur journal of microbiology 0
khalid a. ali abdel rahim botany and microbiology department, college of sciences, king saud university, riyadh, saudi arabia; botany department, central laboratory of genetic engineering, faculty of sciences, sohag university, sohag, egypt; botany and microbiology department, college of sciences, king saud university, p. o. box: 2455, riyadh, saudi arabia. tel: +96-6114675818, fax: +96-6114675833 ahmed mohamed ali mohamed department of medical laboratory technology, college of applied medical sciences, university of dammam, hafr al batin-319 91, saudi arabia

conclusions silver nanoparticles have high therapeutic activity against mrsa, thus can be suggested as an alternative or adjuvant with antibiotics for mrsa treatment. further studies are required to understand the synergistic effect of ag-nps combinations and to assess the safety and efficacy of new antibiotic-ag-nps combinations. background methicillin-resistant staphylococcus aureus (mrsa) ar...

2012
Kamyar Shameli Mansor Bin Ahmad Seyed Davoud Jazayeri Sajjad Sedaghat Parvaneh Shabanzadeh Hossein Jahangirian Mahnaz Mahdavi Yadollah Abdollahi

The roles of green chemistry in nanotechnology and nanoscience fields are very significant in the synthesis of diverse nanomaterials. Herein, we report a green chemistry method for synthesized colloidal silver nanoparticles (Ag NPs) in polymeric media. The colloidal Ag NPs were synthesized in an aqueous solution using silver nitrate, polyethylene glycol (PEG), and β-D-glucose as a silver precur...

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