Comparative Study on Antibacterial Activity of Metal Ions, Monometallic and Alloy Noble Metal Nanoparticles Against Nosocomial Pathogens

2020 ◽  
Vol 10 (4) ◽  
pp. 1018-1036 ◽  
Author(s):  
Larkins Ramteke ◽  
Poonam Gawali ◽  
B. L. Jadhav ◽  
B. A. Chopade
Keyword(s):  
Antibacterial Activity ◽  
Comparative Study ◽  
Metal Ions ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Nosocomial Pathogens

scholarly journals Biocompatibility and photo-induced antibacterial activity of lignin-stabilized noble metal nanoparticles

RSC Advances ◽  
2018 ◽  
Vol 8 (70) ◽  
pp. 40454-40463 ◽  
Author(s):  
Diamela María Rocca ◽  
Julie P. Vanegas ◽  
Kelsey Fournier ◽  
M. Cecilia Becerra ◽  
Juan C. Scaiano ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Antimicrobial Properties ◽  
Noble Metal Nanoparticles ◽  
Stabilizing Agents

Natural derived compounds, lignins, can be used as reducing and stabilizing agents to synthesize noble metal nanoparticles with antimicrobial properties.

Self-assembled calixarene aligned patterning of noble metal nanoparticles on graphene

Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4517-4520 ◽  
Author(s):  
Xianjue Chen ◽  
Kasturi Vimalanathan ◽  
Wenzhe Zang ◽  
Ashley D. Slattery ◽  
Ramiz A. Boulos ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Phosphonic Acid ◽  
Hydrogen Gas ◽  
Noble Metal Nanoparticles ◽  
Self Assembled

Patterns of noble metal nanoparticles (NMNPs) of ruthenium and platinum are formed on p-phosphonic acid calix[8]arene stabilized graphene in water with hydrogen gas induced reduction of the metal ions.

Synthesis and characterization of bimetallic noble metal nanoparticles for biomedical applications

MRS Advances ◽  
2016 ◽  
Vol 1 (11) ◽  
pp. 681-691 ◽  
Author(s):  
Prem C. Pandey ◽  
Govind Pandey
Keyword(s):  
Metal Ions ◽  
Prussian Blue ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Time Course ◽  
Bimetallic Nanoparticles ◽  
Reducing Agents ◽  
Noble Metal Nanoparticles ◽  
Ambient Conditions ◽  
Peroxidase Mimetic

ABSTRACTWe report herein a facile approach to synthesize processable bimetallic nanoparticles (Pd-Au/AuPd/Ag-Au/Au-Ag) decorated Prussian blue nanocomposite (PB-AgNP). The presence of cyclohexanone/formaldehyde facilitates the formation of functional bimetallic nanoparticles from 3-aminopropyltrimethoxysilane (3-APTMS) capped desired ratio of hetero noble metal ions. The use of 3-APTMS and cyclohexanone also enables the synthesis of polycrystalline Prussian blue nanoparticles (PBNPs). As synthesized PBNPs, Pd-Au/Au-Pd/Ag-Au/Au-Ag enable the formation of nano-structured composites displaying better catalytic activity than that recorded with natural enzyme. The nanomaterials have been characterized by Uv-Vis, FT-IR and Transmission Electron Microscopy (TEM) with following major findings: (1) 3-APTMS capped noble metal ions in the presence of suitable organic reducing agents i.e.; 3 glycidoxypropyltrimethoxysilane (GPTMS), cyclohexanone and formaldehyde; are converted into respective nanoparticles under ambient conditions, (2) the time course of synthesis and dispersibility of the nanoparticles are found as a function of organic reducing agents, (3) the use of formaldehyde and cyclohexanone in place of GPTMS with 3-APTMS outclasses the other two in imparting better stability of amphiphilic nanoparticles with reduced silanol content, (4) simultaneous synthesis of bimetallic nanoparticles under desired ratio of palladium/gold and silver/ gold cations are recorded, (5) the nanoparticles made from the use of 3-APTMS and cyclohexanone enable the formation of homogeneous nanocomposite with PBNP as peroxidase mimetic representing potential substitute of peroxidase enzyme. The peroxidase mimetic ability has been found to vary as a function of 3-APTMS concentration revealing the potential role of functional metal nanoparticles in bioanalytical applications.

Moxifloxacin-capped noble metal nanoparticles as potential urease inhibitors

2015 ◽  
Vol 39 (10) ◽  
pp. 8080-8086 ◽  
Author(s):  
Muhammad Nisar ◽  
Shujaat Ali Khan ◽  
Muhammad Raza Shah ◽  
Ajmal Khan ◽  
Umar Farooq ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Urease Inhibitors ◽  
Urease Inhibition ◽  
Silver And Gold Nanoparticles

The fluoroquinolone drug moxifloxacin (Mox) has been used to protect silver and gold nanoparticles. The nano-conjugates exhibited urease inhibition and antibacterial activity.

Role of organic functionalities linked to alkoxysilane precursors in nanomaterials synthesis and their biomedical applications

2015 ◽  
Vol 1719 ◽  
Author(s):  
P. C. Pandey ◽  
Govind Pandey
Keyword(s):  
Salt Tolerance ◽  
Metal Ions ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Biomedical Applications ◽  
Ph Sensitivity ◽  
Noble Metal Nanoparticles ◽  
Biological Interactions ◽  
Wide Range

ABSTRACTThe synthesis of biocompatible noble metal nanoparticles dispersible in a wide range of biological media with control of polycrystalinity and nanogeometry, pH sensitivity and salt tolerance has been a challenging requirements. The role of 3-aminopropyltrimethoxysilane (3-APTMS) and organic reducing reagents for real time synthesis of amphilic noble metal nanoparticles meeting these requirements are demonstrated justifying the following; (1) 3-APTMS capped noble metal ions are converted into respective metal nanoparticles in the presence of one of organic reducing agents i.e., cyclohexanone, tetrahydrofuran hydroperoxide (THF-HPO), formaldehyde, acetaldehyde, acetone, t-buty dimethyl keotone, 3-Glycidoxy-propyltrimethoxysilane (3-GPTMS); (2) 3-APTMS acts as micelle, promotes the interaction of metal ions with organic reducing agent, precisely controls the size of metal nanoparticles, pH sensititvity and salt tolerance and also provides a suitable medium for nanoparticles suspension, (3) the use of suitable organic reagent precisely controls the polarity of as made noble metal nanoparticles allowing specific biological interactions, and (4) 3-APTMS significantly increases the stability and controls the pH sensitivity and salt tolerance of metal nanoparticles. The as synthesized nanomaterials show potential viability in biomedical applications from many angles i.e. (a) as potential bioelectrocatalyst, (b) selective interaction with active proteins and cellular components, and (c) peroxidase mimetic.

scholarly journals Visible Light-Mediated Sustainable Antibacterial Activity and Osteogenic Functionality of Au and Pt Multi-Coated TiO2 Nanotubes

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 5976
Author(s):  
Kyoung-Suk Moon ◽  
Young-Bum Park ◽  
Ji-Myung Bae ◽  
Eun-Joo Choi ◽  
Seung-Han Oh
Keyword(s):  
Antibacterial Activity ◽  
Visible Light ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metals ◽  
Human Mesenchymal Stem Cells ◽  
Antibacterial Activities ◽  
Titania Nanotubes ◽  
Noble Metal Nanoparticles ◽  
Low Level Laser Therapy

The visible light reactions of noble metal-based photocatalysts have been increasingly utilized to investigate their antibacterial activities. Furthermore, the photoreactions at various visible light wavelengths for specific combinations of titania nanotubes and noble metal nanoparticles have been found to promote osteogenic functionality. In this investigation, a novel multi-coating combination of noble metals (gold and platinum) on titania nanotubes was assessed using plasmonic photocatalysis and low-level laser therapy at 470 and 600 nm. The results showed that this coating on the nanotubes promoted antibacterial activity and osteogenic functionality. The order in which the gold and platinum coatings were layered onto the titania nanotubes strongly affected the osteogenic performance of the human mesenchymal stem cells. These results have identified a new approach for the development of efficient novel combinations of noble metal nanoparticles and titania nanotubes with visible light responses, sustainable antimicrobial activity, and osteogenic functionality.

Green synthesis of noble metal nanoparticles using cysteine-modified silk fibroin: catalysis and antibacterial activity

RSC Advances ◽  
2014 ◽  
Vol 4 (86) ◽  
pp. 46285-46292 ◽  
Author(s):  
Soumen Das ◽  
Basab Bijayi Dhar
Keyword(s):  
Antibacterial Activity ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Silk Fibroin ◽  
Noble Metal Nanoparticles

Noble metal nanoparticles (NPs) have shown remarkable potential for numerous applications.

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