Journal ArticleDOI
Copper Oxide Nanoparticles: Synthesis, Characterization and Their Antibacterial Activity
TLDR
In this article, the tetra butyl ammonium bromide (TBAB) was used as structure directing agent in an organic medium viz. tetra hydro furan (THF) and acetonitrile (ACN) in 4:1 ratio by optimizing current density and molar concentration of the ligand.Abstract:
Copper oxide nanoparticles were prepared by electrochemical reduction method using tetra butyl ammonium bromide (TBAB) as structure directing agent in an organic medium viz. tetra hydro furan (THF) and acetonitrile (ACN) in 4:1 ratio by optimizing current density and molar concentration of the ligand. The reduction process takes place under inert atmosphere of nitrogen over a period of 2 h. Such nanoparticles are prepared using simple electrolysis cell in which the sacrificial anode as a commercially available copper metal sheet and platinum (inert) sheet act as a cathode. The parameters such as current density, solvent polarity, distance between electrodes, and concentration of stabilizers are used to control the size of nanoparticles. The synthesized copper oxide nanoparticles were characterized by using UV–Visible, FT-IR, XRD, SEM–EDS and TEM analysis techniques. The nanoparticles were tested for antibacterial activity against human pathogens like Escherichia coli (E. coli) and Staphylococcus strains and which was proved to be excellent.read more
Citations
More filters
Journal ArticleDOI
Alternative Antimicrobial Approach: Nano-Antimicrobial Materials
TL;DR: The activities of nanoparticles as an antimicrobial means, their mode of action, nanoparticle effect on drug-resistant bacteria, and the risks attendant on their use as antibacterial agents are discussed.
Journal ArticleDOI
Green synthesized ZnO nanoparticles against bacterial and fungal pathogens
TL;DR: In this article, the antimicrobial efficacy of green and chemical synthesized ZnO nanoparticles against various bacterial and fungal pathogens was evaluated using varying concentrations of green nanoparticles with sizes 40 and 25 nm respectively.
Journal ArticleDOI
Understanding the pathway of antibacterial activity of copper oxide nanoparticles
TL;DR: In this paper, the role of oxidation state in the antibacterial activity of copper oxide nanoparticles (NPs) was investigated and the findings add strong support to a contact killing mechanism of copper oxides (CuO and Cu2O) through which bacteria initially suffer severe damage to the cell envelope.
Journal ArticleDOI
Metal oxide nanoparticles as antimicrobial agents: a promise for the future
TL;DR: The mechanisms of action of MeO-NPs against micro-organisms, safety concerns, challenges and future perspectives are discussed.
Journal ArticleDOI
The newest achievements in synthesis, immobilization and practical applications of antibacterial nanoparticles
TL;DR: In this article, a review describes recent developments in the synthesis, modification and practical applications of nanoparticles (NPs) and also describes the methods of NPs incorporation in various matrices.
References
More filters
Journal ArticleDOI
Quantum Dot Bioconjugates for Ultrasensitive Nonisotopic Detection
Warren C. W. Chan,Shuming Nie +1 more
TL;DR: Highly luminescent semiconductor quantum dots (zinc sulfide-capped cadmium selenide) have been covalently coupled to biomolecules for use in ultrasensitive biological detection and these nanometer-sized conjugates are water-soluble and biocompatible.
Journal ArticleDOI
Silver nanoparticles as antimicrobial agent: a case study on E. coli as a model for Gram-negative bacteria
Ivan Sondi,Branka Salopek-Sondi +1 more
TL;DR: These nontoxic nanomaterials, which can be prepared in a simple and cost-effective manner, may be suitable for the formulation of new types of bactericidal materials.
Journal ArticleDOI
Nanostructured materials: basic concepts and microstructure☆
TL;DR: In this article, the authors summarize the basic physical concepts and the microstructural features of equilibrium and non-equilibrium nanostructured materials (NsM) and make an attempt to summarize their properties.
Journal ArticleDOI
Silver Colloid Nanoparticles: Synthesis, Characterization, and Their Antibacterial Activity
Aleš Panáček,Libor Kvítek,Robert Prucek,Milan Kolar,Renata Vecerova,N. Pizúrová,Virender K. Sharma,Tat’jana Nevečná,Radek Zboril +8 more
TL;DR: The reduction of [Ag(NH(3))(2)](+) by maltose produced silver particles with a narrow size distribution with an average size of 25 nm, which showed high antimicrobial and bactericidal activity against Gram-positive and Gram-negative bacteria, including highly multiresistant strains such as methicillin-resistant Staphylococcus aureus.
Journal ArticleDOI
Targeted nanoparticle-aptamer bioconjugates for cancer chemotherapy in vivo
Omid C. Farokhzad,Jianjun Cheng,Jianjun Cheng,Benjamin A. Teply,Ines Sherifi,Sangyong Jon,Philip W. Kantoff,Jerome P. Richie,Robert Langer,Robert Langer +9 more
TL;DR: The potential utility of nanoparticle-aptamer bioconjugates for a therapeutic application is demonstrated and remarkable efficacy and reduced toxicity as measured by mean body weight loss (BWL) in vivo are demonstrated.