Dragon's blood-aided synthesis of Ag/Ag2O core/shell nanostructures and Ag/Ag2O decked multi-layered graphene for efficient As(iii) uptake from water and antibacterial activity

RSC Advances ◽  
2016 ◽  
Vol 6 (50) ◽  
pp. 44145-44153 ◽  
Author(s):  
Mokhtar Ali Armani ◽  
Ahmed Abu-Taleb ◽  
Nagarjuna Remalli ◽  
Maaged Abdullah ◽  
Vadali V. S. S. Srikanth ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Antibacterial Activities ◽  
Core Shell ◽  
Dragon’S Blood ◽  
Shell Nanostructures ◽  
Graphene Nanostructures

Excellent As(iii) uptake and antibacterial activities of Ag/Ag2O core/shell and multi-layered graphene nanostructures obtained with the aid of Dragon's blood.

scholarly journals Enhanced antibacterial activity of bifunctional Fe3O4-Ag core-shell nanostructures

Nano Research ◽  
2009 ◽  
Vol 2 (12) ◽  
pp. 955-965 ◽  
Author(s):  
Bhupendra Chudasama ◽  
Anjana K. Vala ◽  
Nidhi Andhariya ◽  
R. V. Upadhyay ◽  
R. V. Mehta
Keyword(s):  
Antibacterial Activity ◽  
Core Shell ◽  
Shell Nanostructures

scholarly journals Silver nanoparticle embedded copper oxide as an efficient core–shell for the catalytic reduction of 4-nitrophenol and antibacterial activity improvement

2018 ◽  
Vol 47 (27) ◽  
pp. 9143-9155 ◽  
Author(s):  
N. Bouazizi ◽  
J. Vieillard ◽  
P. Thebault ◽  
F. Desriac ◽  
T. Clamens ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Copper Oxide ◽  
Silver Nanoparticle ◽  
Catalytic Reduction ◽  
Antibacterial Activities ◽  
Core Shell

A facile and eco-friendly method was developed to prepare a microporous CuO@Ag0 core–shell with high catalytic and antibacterial activities.

An efficient ultrasonic assisted reverse micelle synthesis route for Fe3O4@Cu-MOF/core-shell nanostructures and its antibacterial activities

2021 ◽  
Vol 294 ◽  
pp. 121897
Author(s):  
Omolbanin Azizabadi ◽  
Fatemeh Akbarzadeh ◽  
Svetlana Danshina ◽  
Narendra Pal Singh Chauhan ◽  
Ghasem Sargazi
Keyword(s):  
Reverse Micelle ◽  
Antibacterial Activities ◽  
Core Shell ◽  
Synthesis Route ◽  
Shell Nanostructures ◽  
Ultrasonic Assisted

Selective antifungal and antibacterial activities of Ag-Cu and Cu-Ag core–shell nanostructures synthesized in-situ PVA

2020 ◽  
Vol 31 (48) ◽  
pp. 485705
Author(s):  
Syed Farhat Sabira ◽  
Aishwarya M Kasabe ◽  
Pramod C Mane ◽  
Ravindra D Chaudhari ◽  
Parag V Adhyapak
Keyword(s):  
Antibacterial Activities ◽  
Core Shell ◽  
Shell Nanostructures

Antioxidant and Antibacterial Activities of Artemisia herba-alba Asso Essential Oil from Middle Atlas, Morocco

2018 ◽  
Vol 16 (S1) ◽  
pp. S48-S54
Author(s):  
Y. Ez zoubi ◽  
S. Lairini ◽  
A. Farah ◽  
K. Taghzouti ◽  
A. El Ouali Lalami
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Foodborne Pathogens ◽  
Food Systems ◽  
Antibacterial Activities ◽  
Culture Collection ◽  
Bornyl Acetate ◽  
Bacterial Strains ◽  
Disk Diffusion Assay ◽  
Different Strains

The purpose of this study was to determine the chemical composition and to evaluate the antioxidant and antibacterial effects of the Moroccan Artemisia herba-alba Asso essential oil against foodborne pathogens. The essential oil of Artemisia herba-alba was analyzed by gas chromatography coupled with mass spectroscopy. The antibacterial activity was assessed against three bacterial strains isolated from foodstuff and three bacterial strains referenced by the ATCC (American Type Culture Collection) using the disk diffusion assay and the macrodilution method. The antioxidant activity was evaluated using the DPPH (2, 2-diphenyl-1- picrylhydrazyl) method. The fourteen compounds of the Artemisia herba-alba essential oil were identified; the main components were identified as β-thujone, chrysanthenone, α-terpineol, α-thujone, α-pinene, and bornyl acetate. The results of the antibacterial activity obtained showed a sensitivity of the different strains to Artemisia herba-alba essential oil with an inhibition diameter of 8.50 to 17.00 mm. Concerning the MICs (minimum inhibitory concentrations), the essential oil exhibited much higher antibacterial activity with MIC values of 2.5 μl/ml against Bacillus subtilis ATCC and Lactobacillus sp. The essential oil was found to be active by inhibiting free radicals with an IC50 (concentration of an inhibitor where the response is reduced by half) value of 2.9 μg/ml. These results indicate the possible use of the essential oil on food systems as an effective inhibitor of foodborne pathogens, as a natural antioxidant, and for potential pharmaceutical applications. However, further research is needed in order to determine the toxicity, antibacterial, and antioxidant effects in edible products.

Microwave assisted synthesis of novel Pyrazole derivatives and their biological evaluation as anti-bacterial agents

2020 ◽  
Vol 23 ◽  
Author(s):  
Hadis Khodadad ◽  
Farhad Hatamjafari ◽  
Khalil Pourshamsian ◽  
Babak Sadeghi
Keyword(s):  
Antibacterial Activity ◽  
Aromatic Aldehydes ◽  
Catalytic Amount ◽  
Antibacterial Activities ◽  
Structural Features ◽  
Biological Evaluation ◽  
Aureus Strain ◽  
Microwave Assisted Synthesis ◽  
Pyrazole Derivatives ◽  
Microwave Assisted

Aim and Objective: Microwave-assisted condensation of acetophenone 1 and aromatic aldehydes 2 gave chalcone analogs 3, which were cyclized to pyrazole derivatives 6a-f via the reaction with hydrazine hydrate and oxalic acid in the presence of the catalytic amount of acetic acid in ethanol. Materials and Methods: The structural features of the synthesized compounds were characterized by melting point, FT-IR, 1H, 13C NMR and elemental analysis. Results: The antibacterial activities of the synthesized pyrazoles was evaluated against three gram-positive bacteria such as Enterococcus durans, Staphylococcus aureus, Bacillus subtilis and two gram-negative bacteria such as Escherichia coli and Salmonella typhimurium. Conclusion: All the synthesized pyrazoles showed relatively high antibacterial activity against S. aureus strain and none of them demonstrated antibacterial activity against E. coli.

scholarly journals Iron Based Core-Shell Structures as Versatile Materials: Magnetic Support and Solid Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 72
Author(s):  
Christian Zambrzycki ◽  
Runbang Shao ◽  
Archismita Misra ◽  
Carsten Streb ◽  
Ulrich Herr ◽  
...  
Keyword(s):  
Water Purification ◽  
Functional Materials ◽  
Core Material ◽  
Solid Catalyst ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
The Core ◽  
Shell Nanostructures ◽  
Sio2 Shell ◽  
Iron Based

Core-shell materials are promising functional materials for fundamental research and industrial application, as their properties can be adapted for specific applications. In particular, particles featuring iron or iron oxide as core material are relevant since they combine magnetic and catalytic properties. The addition of an SiO2 shell around the core particles introduces additional design aspects, such as a pore structure and surface functionalization. Herein, we describe the synthesis and application of iron-based core-shell nanoparticles for two different fields of research that is heterogeneous catalysis and water purification. The iron-based core shell materials were characterized by transmission electron microscopy, as well as N2-physisorption, X-ray diffraction, and vibrating-sample magnetometer measurements in order to correlate their properties with the performance in the target applications. Investigations of these materials in CO2 hydrogenation and water purification show their versatility and applicability in different fields of research and application, after suitable individual functionalization of the core-shell precursor. For design and application of magnetically separable particles, the SiO2 shell is surface-functionalized with an ionic liquid in order to bind water pollutants selectively. The core requires no functionalization, as it provides suitable magnetic properties in the as-made state. For catalytic application in synthesis gas reactions, the SiO2-stabilized core nanoparticles are reductively functionalized to provide the catalytically active metallic iron sites. Therefore, Fe@SiO2 core-shell nanostructures are shown to provide platform materials for various fields of application, after a specific functionalization.

Sign in / Sign up

Export Citation Format

Share Document