Synthesis of core–shell structured alumina/Cu microspheres using activation by silver nanoparticles deposited on polydopamine-coated surfaces

RSC Advances ◽  
2016 ◽  
Vol 6 (85) ◽  
pp. 81767-81773 ◽  
Author(s):  
Jiaxun Hu ◽  
Shuqing Wu ◽  
Qin Cao ◽  
Wenda Zhang
Keyword(s):  
Silver Nanoparticles ◽  
Core Shell ◽  
Efficient Approach ◽  
Composite Microspheres ◽  
Coated Surfaces

A facile and efficient approach to preparing alumina/Cu composite microspheres with silver-decorated polydopamine coating is proposed.

Dual-effect core–shell polyphenol coated silver nanoparticles for tissue engineering

2021 ◽  
Vol 26 ◽  
pp. 100716
Author(s):  
Juan Manuel Galdopórpora ◽  
Angelina Ibar ◽  
Maria Victoria Tuttolomondo ◽  
Martin Federico Desimone
Keyword(s):  
Tissue Engineering ◽  
Silver Nanoparticles ◽  
Core Shell ◽  
Dual Effect

scholarly journals Single-Step Green Synthesis of Highly Concentrated and Stable Colloidal Dispersion of Core-Shell Silver Nanoparticles and Their Antimicrobial and Ultra-High Catalytic Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1007
Author(s):  
Azam Ali ◽  
Mariyam Sattar ◽  
Fiaz Hussain ◽  
Muhammad Humble Khalid Tareen ◽  
Jiri Militky ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Tannic Acid ◽  
Rate Constant ◽  
Catalytic Properties ◽  
Colloidal Dispersion ◽  
Alkaline Condition ◽  
Core Shell ◽  
Average Particle ◽  
Ag Nps

The versatile one-pot green synthesis of a highly concentrated and stable colloidal dispersion of silver nanoparticles (Ag NPs) was carried out using the self-assembled tannic acid without using any other hazardous chemicals. Tannic acid (Plant-based polyphenol) was used as a reducing and stabilizing agent for silver nitrate in a mild alkaline condition. The synthesized Ag NPs were characterized for their concentration, capping, size distribution, and shape. The experimental results confirmed the successful synthesis of nearly spherical and highly concentrated (2281 ppm) Ag NPs, capped with poly-tannic acid (Ag NPs-PTA). The average particle size of Ag NPs-PTA was found to be 9.90 ± 1.60 nm. The colloidal dispersion of synthesized nanoparticles was observed to be stable for more than 15 months in the ambient environment (25 °C, 65% relative humidity). The synthesized AgNPs-PTA showed an effective antimicrobial activity against Staphylococcus Aureus (ZOI 3.0 mM) and Escherichia coli (ZOI 3.5 mM). Ag NPs-PTA also exhibited enhanced catalytic properties. It reduces 4-nitrophenol into 4-aminophenol in the presence of NaBH4 with a normalized rate constant (Knor = K/m) of 615.04 mL·s−1·mg−1. For comparison, bare Ag NPs show catalytic activity with a normalized rate constant of 139.78 mL·s−1·mg−1. Furthermore, AgNPs-PTA were stable for more than 15 months under ambient conditions. The ultra-high catalytic and good antimicrobial properties can be attributed to the fine size and good aqueous stability of Ag NPs-PTA. The unique core-shell structure and ease of synthesis render the synthesized nanoparticles superior to others, with potential for large-scale applications, especially in the field of catalysis and medical.

scholarly journals Characterization of silver-polymer core–shell nanoparticles using electron microscopy

Nanoscale ◽  
2018 ◽  
Vol 10 (19) ◽  
pp. 9186-9191 ◽  
Author(s):  
Nathalie Claes ◽  
Ramesh Asapu ◽  
Natan Blommaerts ◽  
Sammy W. Verbruggen ◽  
Silvia Lenaerts ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Using electron microscopy, polymer encapsulated silver nanoparticles were visualized and their coverage, molecular structure and plasmonic properties could be investigated.

scholarly journals Synthesis and Catalytic Activity of Silver Nanoparticles Immobilized onto Composite Microspheres

2013 ◽  
Vol 29 (04) ◽  
pp. 785-791
Author(s):  
HAO Min-Min ◽  
◽  
LI Chen ◽  
YU Min ◽  
ZHANG Ying
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Activity ◽  
Composite Microspheres

Preparation of P(AM-co-MAA)-W-Ag Composite Microspheres with Core-Shell Structures

2008 ◽  
Vol 24 (04) ◽  
pp. 646-652
Author(s):  
WU Hua-Tao ◽  
◽  
◽  
ZHANG Ying ◽  
NING Xiang-Li ◽  
...  
Keyword(s):  
Shell Structures ◽  
Core Shell ◽  
Composite Microspheres
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