Direct Synthesis of Cubic Benzene-Bridged Mesoporous Organosilica Functionalized with Mercaptopropyl Groups as an Effective Adsorbent for Mercury and Silver Ions

2010 ◽  
Vol 114 (15) ◽  
pp. 7021-7029 ◽  
Author(s):  
Hao-Yiang Wu ◽  
Ching-Ting Chen ◽  
I-Ming Hung ◽  
Chia-Hsiu Liao ◽  
Shanmugam Vetrivel ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Silver Ions ◽  
Mesoporous Organosilica

scholarly journals Direct Synthesis of Mesoporous Organosilica and Proof-of-Concept Applications in Lysozyme Adsorption and Supported Catalysis

ACS Omega ◽  
2020 ◽  
Vol 5 (30) ◽  
pp. 18842-18848
Author(s):  
Oriana Osta ◽  
Marianne Bombled ◽  
David Partouche ◽  
Florian Gallier ◽  
Nadège Lubin-Germain ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Proof Of Concept ◽  
Mesoporous Organosilica ◽  
Supported Catalysis ◽  
Lysozyme Adsorption

Direct Synthesis of Anisotropic Metal Particles by Ink Jet Printing Technique

2008 ◽  
Vol 55-57 ◽  
pp. 585-588
Author(s):  
Rungrot Kitsomboonloha ◽  
T. Bera ◽  
Joydeep Dutta
Keyword(s):  
Direct Synthesis ◽  
Silver Ions ◽  
Anisotropic Particles ◽  
Fluorescence Sensing ◽  
Large Area ◽  
Enhanced Fluorescence ◽  
Synthesis Of Nanoparticles ◽  
Aspect Ratios ◽  
Ink Jet ◽  
Jet Printing

Here we report the synthesis of nanoparticles with aspect ratios of up to five by synthesis in small concentrated volumes of reactants using an ink-jet printer. Silver and gold nanoparticles were synthesized rapidly on transparent sheets using a commercial ink jet printer. A commercial inkjet printer was modified by replacing conventional inks with different reactants including silver nitrate, ammonium-complex silver, gold chloride reduced by ascorbic acid. The reaction was allowed to occur directly on the substrate within a short reaction time and confined reaction volume defined by the droplet size on the substrate. The nanoparticles and microrods formed on the substrate depend on pH and ionic concentrations of the solutions. The pH of the solutions is an important factor controlling the aspect ratio of microrods. When the concentration of silver ions in the reactant solution was increased the number of particles deposited on the substrate increased subsequently. Anisotropic particles could be formed uniformly over very large area surfaces (1mm x 20mm). This method can be suitable for rapid synthesis of anisotropic particles for potential application in metal-enhanced fluorescence sensing, antibacterial coating, anti reflection coatings, amongst others.

Functionalization of periodic mesoporous organosilica with ureidopropyl groups by a direct synthesis method

2007 ◽  
Vol 101 (3) ◽  
pp. 381-387 ◽  
Author(s):  
Qi Wei ◽  
Li Liu ◽  
Zuo-Ren Nie ◽  
Hui-Qiao Chen ◽  
Yan-Li Wang ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Synthesis Method ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica

Direct synthesis of large-pore ethane-bridged mesoporous organosilica functionalized with carboxylic groups

2009 ◽  
pp. 4402 ◽  
Author(s):  
Sonia Fiorilli ◽  
Beatrice Camarota ◽  
Daniela Perrachon ◽  
Maria Concetta Bruzzoniti ◽  
Edoardo Garrone ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Large Pore ◽  
Mesoporous Organosilica ◽  
Carboxylic Groups

Biocompatibility of Silver Nano Bio-conjugates from Vitis vinifera Seeds and its Major Component Resveratrol

2016 ◽  
Vol 6 (3) ◽  
Author(s):  
R. Preethi ◽  
P. Padma
Keyword(s):  
Zeta Potential ◽  
Vitis Vinifera ◽  
Silver Ions ◽  
Seed Extract ◽  
Polydispersity Index ◽  
Potential Range ◽  
Visible Spectroscopy ◽  
Grape Seeds ◽  
X Ray ◽  
Uv Visible

The study focused on the green synthesis of silver nanobioconjugates (AgNPs) from phenolic-rich fruit source, Vitis vinifera seed extract and its major component phenolic, resveratrol respectively. Sunlight exposure for 20 minutes was the method of choice for the synthesis of AgNPs of the extract as well as the phenolic, resveratrol. The synthesized nanobioconjugates were characterized using UV-Visible spectroscopy, Transmission electron microscopy (TEM), Energy dispersive X-ray analysis (EDAX), X-ray diffraction (XRD), Polydispersity index, Zeta potential and Fourier transform infrared spectroscopy (FTIR). The reduction of silver ions was confirmed by UV-visible spectroscopy with peaks at 440nm for both nanobioconjugates synthesized from seed extract and compound. The nanobioconjugates showed the spherical in shape with 14-35nm in size and crystalline in nature. The conjugates are well dispersed with 0.301 and 0.287 polydispersity index and the zeta potential range at -13.6 and -14.3mV for stability. The FTRI data proved that the components in grape seeds act as good reductants and stabilizers for the silver nanobioconjugate synthesis. All the synthesized nanobioconjugates exhibited steady and sustained release of the medicinal components conjugated, proving their druggability, and were biocompatible with human cells, demonstrating their safety. The findings of the study validate the anticancer properties of silver nanobioconjugates of Vitis vinifera and its active component resveratrol.

Antimicrobial Activity of Silver Nanoparticles Synthesized by Streptomyces Species JF714876

2012 ◽  
Vol 5 (1) ◽  
pp. 1638-1642 ◽  
Author(s):  
Vidyasagar G M ◽  
Shankaravva B ◽  
R Begum ◽  
Imrose ◽  
Sagar R ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Silver Ions ◽  
Human Beings ◽  
Streptomyces Species ◽  
Force Microscopy ◽  
E Coli ◽  
Extracellular Synthesis ◽  
Atomic Force ◽  
Uv Visible

Microorganisms like fungi, actinomycetes and bacteria are considered nanofactories and are helpful in the production of nanoparticles useful in the welfare of human beings. In the present study, we investigated the production of silver nanoparticles from Streptomyces species JF714876. Extracellular synthesis of silver nanoparticles by Streptomyces species was carried out using two different media. Silver nanoparticles were examined using UV-visible, IR and atomic force microscopy. The size of silver nanoparticles was in the range of 80-100 nm. Antimicrobial activity of silver nanoparticle against bacteria such as E. coli, S. aureus, and dermatophytes like T. rubrum and T. tonsurans was determined. Thus, this study suggests that the Streptomyces sp. JF741876 can produce silver ions that can be used as an antimicrobial substance.

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