Continuous synthesis of tuneable sized silver nanoparticles <i>via</i> a tandem seed-mediated method in coiled flow inverter reactors

Wu, Ke‐Jun; Torrente‐Murciano, Laura

doi:10.1039/c7re00194k

Cited by 47 publications

(45 citation statements)

References 28 publications

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“…As this reaction is from the first order, the corresponding reaction rate constants (k) can be determined from the slope of the linear plot Figure 4 c,d): 5.3 × 10 −3 s −1 for AuNPs, and 2.8 × 10 −3 s −1 for AgNPs. As these k values are in good agreement with previously reported ones [ 21 , 22 , 23 ], we can conclude that both samples AuNPs and AgNPs exhibit good surface accessibility.…”

Section: Resultssupporting

confidence: 92%

Investigation of Nanoparticle Metallic Core Antibacterial Activity: Gold and Silver Nanoparticles against Escherichia coli and Staphylococcus aureus

Gouyau

Duval

Boudier

et al. 2021

IJMS

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Multidrug-resistant (MDR) bacteria constitute a global health issue. Over the past ten years, interest in nanoparticles, particularly metallic ones, has grown as potential antibacterial candidates. However, as there is no consensus about the procedure to characterize the metallic nanoparticles (MNPs; i.e., metallic aggregates) and evaluate their antibacterial activity, it is impossible to conclude about their real effectiveness as a new antibacterial agent. To give part of the answer to this question, 12 nm gold and silver nanoparticles have been prepared by a chemical approach. After their characterization by transmission electronic microscopy (TEM), Dynamic Light Scattering (DLS), and UltraViolet-visible (UV-vis) spectroscopy, their surface accessibility was tested through the catalytic reduction of the 4-nitrophenol, and their stability in bacterial culture medium was studied. Finally, the antibacterial activities of 12 nm gold and silver nanoparticles facing Staphylococcus aureus and Escherichia coli have been evaluated using the broth microdilution method. The results show that gold nanoparticles have a weak antibacterial activity (i.e., slight inhibition of bacterial growth) against the two bacteria tested. In contrast, silver nanoparticles have no activity on S. aureus but demonstrate a high antibacterial activity against Escherichia coli, with a minimum inhibitory concentration of 128 µmol/L. This high antibacterial activity is also maintained against two MDR-E. coli strains.

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Section: Resultssupporting

confidence: 92%

Investigation of Nanoparticle Metallic Core Antibacterial Activity: Gold and Silver Nanoparticles against Escherichia coli and Staphylococcus aureus

Gouyau

Duval

Boudier

et al. 2021

IJMS

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“…Reasonable adjustment of both steps, nanoparticles in a wide range of diameters, can be prepared. Additionally, this approach also provides dispersions of nanoparticles with reasonably good values of polydispersity [31,232,233].…”

Section: Resultsmentioning

confidence: 98%

Physicochemical Aspects of Metal Nanoparticle Preparation

Kvı́tek¹,

Prucek²,

Panáček³

et al. 2020

Engineered Nanomaterials - Health and Safety

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Physicochemical properties, including optical properties or catalytic activity, and biological properties of metal nanoparticles are considerably influenced by their diameter. Therefore, a tailored synthesis of metal nanoparticles represents a key topic in the field of nanotechnology, and the number of research papers, concerning this topic, has been annually growing with an arithmetic progression. Metal nanoparticles are most frequently prepared via chemical reduction of metals in ionic form from their solutions. Using this synthetic approach, tailored parameters of the particles can be achieved via the adjustment of numerous factors: difference of potentials of the metal redox system and the reducing agent redox system, pH of the reaction mixture, and its temperature. The influence of these three factors on the diameter of the prepared metal nanoparticles will be discussed in the following chapter with respect to general laws and based on numerous examples from research practice.

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“…Similarly, silver nanoparticles of different sizes (≤5 ± 0.8, 6.5 ± 1.2, 6.8 ± 1.2, 7.7 ± 1.4, 8.0 ± 1.5, and 9.3 ± 1.8 nm) were prepared by using a step-by-step reaction strategy in microfluidic technology ( Figure 5 c) [ 49 ]. The Dean number of the reactor determined the size and polydispersity of the nanoparticles.…”

Section: Progress Of Microfluidic Technology In the Synthesis Of Imentioning

confidence: 99%

“…( b ) Chemoselective polymerization platform for the synthesis of polyester-modified silver nanoparticles (reproduced from [ 116 ], with permission from the Elsevier, 2018). ( c ) Experimental setup for fabrication of silver nanoparticles by using microfluidic step-by-step reaction strategy in a microfluidic chamber (reproduced from [ 49 ], with permission from the Royal Society of Chemistry, 2018).…”

Section: Figurementioning

confidence: 99%

Synthesis and Surface Engineering of Inorganic Nanomaterials Based on Microfluidic Technology

Shen

Shafiq

et al. 2020

Nanomaterials

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The controlled synthesis and surface engineering of inorganic nanomaterials hold great promise for the design of functional nanoparticles for a variety of applications, such as drug delivery, bioimaging, biosensing, and catalysis. However, owing to the inadequate and unstable mass/heat transfer, conventional bulk synthesis methods often result in the poor uniformity of nanoparticles, in terms of microstructure, morphology, and physicochemical properties. Microfluidic technologies with advantageous features, such as precise fluid control and rapid microscale mixing, have gathered the widespread attention of the research community for the fabrication and engineering of nanomaterials, which effectively overcome the aforementioned shortcomings of conventional bench methods. This review summarizes the latest research progress in the microfluidic fabrication of different types of inorganic nanomaterials, including silica, metal, metal oxides, metal organic frameworks, and quantum dots. In addition, the surface modification strategies of nonporous and porous inorganic nanoparticles based on microfluidic method are also introduced. We also provide the readers with an insight on the red blocks and prospects of microfluidic approaches, for designing the next generation of inorganic nanomaterials.

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Continuous synthesis of tuneable sized silver nanoparticles via a tandem seed-mediated method in coiled flow inverter reactors

Cited by 47 publications

References 28 publications

Investigation of Nanoparticle Metallic Core Antibacterial Activity: Gold and Silver Nanoparticles against Escherichia coli and Staphylococcus aureus

Investigation of Nanoparticle Metallic Core Antibacterial Activity: Gold and Silver Nanoparticles against Escherichia coli and Staphylococcus aureus

Physicochemical Aspects of Metal Nanoparticle Preparation

Synthesis and Surface Engineering of Inorganic Nanomaterials Based on Microfluidic Technology

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