Etching silver nanoparticles using DNA

2019 ◽  
Vol 6 (1) ◽  
pp. 155-159 ◽  
Author(s):  
Shengqiang Hu ◽  
Tiantian Yi ◽  
Zhicheng Huang ◽  
Biwu Liu ◽  
Jianxiu Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Ostwald Ripening ◽  
Highly Efficient

Poly-C DNA is highly efficient in etching silver nanoparticles followed by Ostwald ripening at high DNA concentrations, increasing the toxicity of the nanoparticles.

Preparation of Triangular Silver Nanoparticles Using Polyvinyl Pyrrolidone with Different Concentration

2013 ◽  
Vol 873 ◽  
pp. 206-210
Author(s):  
Kai Li ◽  
Rao Fu ◽  
Qing Ran Gao ◽  
Ai Wei Tang ◽  
Ying Feng Wang
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Silver Nanoparticles ◽  
Driving Force ◽  
Ostwald Ripening ◽  
Polyvinyl Pyrrolidone ◽  
Protective Agent ◽  
Ag Nps ◽  
Transmission Electron ◽  
Uv Visible

This paper continues our previous work on preparation of triangular silver nanoparticles. The method proceeds with reaction of silver nitrate with hydrazine hydrate in the presence of polyvinyl pyrrolidone in aqueous solution. Effects of the concentration of PVP on the morphologies of Ag NPs were systematically investigated. The obtained Ag NPs were characterized by transmission electron microscopy and UV-visible spectrophotometer. The results showed that, triangular Ag NPs with edge lengths in the range of 50-200 nm were obtained using PVP as protective agent with lower concentration. As the concentration of PVP increased, spherical Ag NPs with their sizes about 6.2 nm were prepared and triangular Ag NPs were not obtained. The formation mechanism of triangular Ag NPs has been studied. Ostwald ripening is the driving force on the conversion of spherical Ag NPs to triangular Ag NPs in the presence of PVP.

Evolution Analysis of Silver Nanoparticles Synthesised by Lactam Reduction: A Case Study of ϵ-Caprolactam

2018 ◽  
Vol 71 (8) ◽  
pp. 587 ◽  
Author(s):  
Na Zhang ◽  
Jianping Duan ◽  
Dajiang Zhao ◽  
Guisheng Yang
Keyword(s):  
Silver Nanoparticles ◽  
Size Distribution ◽  
Ostwald Ripening ◽  
Silver Ions ◽  
Reducing Agents ◽  
Ag Nps ◽  
Second Stage ◽  
Evolution Analysis ◽  
Ostwald Ripening Mechanism

Without using protecting agent and solvent, silver nanoparticles (Ag NPs) were synthesised by using lactams as reducing agents. Being the most commercially available lactam, ϵ-caprolactam (CL) was taken as a model to illustrate the evolution of Ag NPs in the medium of lactams. The results showed that there were two different stages involved in the Ag NP evolution process. In the first stage, particles were stabilised against further coalescence at a smaller size (< 5 nm) because of face-bound CL. In the second stage, the Ostwald ripening mechanism cooperated with continuous reduction of residual silver ions, which resulted in the resultant particles being distributed with different size distribution. The participation of CL in the reducing and protecting procedures raised a complex evolution of Ag NPs.

Examination of Ostwald ripening in the photocatalytic growth of silver nanoparticles on titanium dioxide coatings

2016 ◽  
Vol 373 ◽  
pp. 38-44 ◽  
Author(s):  
Ireneusz Piwoński ◽  
Kaja Spilarewicz-Stanek ◽  
Aneta Kisielewska ◽  
Kinga Kądzioła ◽  
Michał Cichomski ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Titanium Dioxide ◽  
Ostwald Ripening

Facile and highly efficient approach for the fabrication of multifunctional silk nanofibers containing hydroxyapatite and silver nanoparticles

2013 ◽  
Vol 102 (10) ◽  
pp. 3459-3469 ◽  
Author(s):  
Faheem A. Sheikh ◽  
Hyung Woo Ju ◽  
Bo Mi Moon ◽  
Hyun Jung Park ◽  
Jung-Ho Kim ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Efficient Approach ◽  
Highly Efficient

PAM/graphene/Ag ternary hydrogel: synthesis, characterization and catalytic application

2014 ◽  
Vol 2 (29) ◽  
pp. 11319-11333 ◽  
Author(s):  
Huawen Hu ◽  
John H. Xin ◽  
Hong Hu
Keyword(s):  
Silver Nanoparticles ◽  
Functionalized Graphene ◽  
Ternary Composite ◽  
Highly Efficient ◽  
Catalytic Application ◽  
Water Based ◽  
Hydrogel Synthesis ◽  
Catalytic Applications

Development of a 3D monolithic ternary composite architecture consisting of polyacrylamide network, functionalized graphene and silver nanoparticles using a facile, fast, and inexpensive water-based approach for highly efficient catalytic applications.

Controllable Synthesis and Ostwald Ripening of Silver Nanoparticles

2013 ◽  
Vol 9 (6) ◽  
pp. 753-758 ◽  
Author(s):  
Wanzhong Zhang ◽  
Xueliang Qiao ◽  
Xiaolin Qiu ◽  
Qingyuan Chen ◽  
Yuchun Cai ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Ostwald Ripening ◽  
Controllable Synthesis

In situ polydopamine-assisted deposition of silver nanoparticles on a two dimensional support as an inexpensive and highly efficient SERS substrate

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36368-36373 ◽  
Author(s):  
Peilan Wang ◽  
Yanling Zhou ◽  
Ying Wen ◽  
Feng Wang ◽  
Haifeng Yang
Keyword(s):  
Silver Nanoparticles ◽  
Sers Substrate ◽  
Two Dimensional ◽  
Highly Efficient

Versatile substrates were modified with polydopamine followed by in situ AgNP deposition to fabricate a cheap, flexible and disposable SERS substrate.

scholarly journals Textile-supported silver nanoparticles as a highly efficient and recyclable heterogeneous catalyst for nitroaromatic reduction at room temperature

RSC Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 6288-6292 ◽  
Author(s):  
Wei Feng ◽  
Tingting Huang ◽  
Liqian Gao ◽  
Xianfeng Yang ◽  
Wenbin Deng ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Highly Efficient ◽  
Excellent Activity ◽  
Recyclable Heterogeneous Catalyst

A novel textile-supported nanosilver (TsNS) catalyst was prepared and applied in nitroaromatic reduction with excellent activity, stability and recyclability.

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