scholarly journals Synthesis and characterization of a (+)-catechin and L-(+)-ascorbic acid cocrystal as a new functional ingredient for tea drinks

Heliyon ◽  
2019 ◽  
Vol 5 (8) ◽  
pp. e02291 ◽  
Author(s):  
U.G. Spizzirri ◽  
G. Carullo ◽  
L. De Cicco ◽  
A. Crispini ◽  
F. Scarpelli ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Synthesis And Characterization ◽  
Functional Ingredient

Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Mai Ngọc Tuan Anh
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Ascorbic Acid ◽  
Silver Nitrate ◽  
Sodium Borohydride ◽  
Trisodium Citrate ◽  
Synthesis And Characterization ◽  
Silver Nanoplates ◽  
Seed Mediated

Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

Synthesis and characterization of a multi-functional on–off–on fluorescent oxidized graphitic carbon nitride nanosensor for iodide, chromium(vi), and ascorbic acid

2019 ◽  
Vol 7 (38) ◽  
pp. 11896-11902 ◽  
Author(s):  
Jun-Ling Yu ◽  
Lu-Yuan Hao ◽  
Bin-Bin Dong ◽  
Fei-Hong Wang ◽  
Sayed Ali Khan ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Selective Recognition ◽  
Synthesis And Characterization ◽  
Enhanced Fluorescence ◽  
Chromium Vi

The nano-CNO with enhanced fluorescence exhibited sensitive and selective recognition of iodides, chromium(vi), which is promising for biosensing.

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