Synthesis and characterization of vinyl-polyhedral oligomeric silsesquioxanes-reinforced silicone resin with three-dimensional cross-linking structure

2015 ◽  
Vol 132 (27) ◽  
pp. n/a-n/a ◽  
Author(s):  
Yan Zhang ◽  
Yin-wen Li ◽  
Jian Zheng ◽  
Hui-long Guo ◽  
Xiao-xiao Guan ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Synthesis And Characterization ◽  
Cross Linking ◽  
Silicone Resin ◽  
Polyhedral Oligomeric Silsesquioxanes

scholarly journals Synthesis and Characterization of Clay Polymer Nanocomposites of P(4VP-co-AAm) and Their Application for the Removal of Atrazine

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 721 ◽  
Author(s):  
Jorge A. Ramírez-Gómez ◽  
Javier Illescas ◽  
María del Carmen Díaz-Nava ◽  
Claudia Muro-Urista ◽  
Sonia Martínez-Gallegos ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Nanocomposite Materials ◽  
Synthesis And Characterization ◽  
Cross Linking ◽  
X Ray Diffraction ◽  
Numerous Species ◽  
X Ray ◽  
Different Types ◽  
Synthesized Materials

Atrazine (ATZ) is an herbicide which is applied to the soil, and its mechanism of action involves the inhibition of photosynthesis. One of its main functions is to control the appearance of weeds in crops, primarily in corn, sorghum, sugar cane, and wheat; however, it is very toxic for numerous species, including humans. Therefore, this work deals with the adsorption of ATZ from aqueous solutions using nanocomposite materials, synthesized with two different types of organo-modified clays. Those were obtained by the free radical polymerization of 4-vinylpyridine (4VP) and acrylamide (AAm) in different stoichiometric ratios, using tetrabutylphosphonium persulfate (TBPPS) as a radical initiator and N,N′-methylenebisacrylamide (BIS) as cross-linking agent. The structural, morphological, and textural characteristics of clays, copolymers, and nanocomposites were determined through different analytical and instrumental techniques, i.e., X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). Adsorption kinetics experiments of ATZ were determined with the modified and synthesized materials, and the effect of the ratio between 4VP and AAm moieties on the removal capacities of the obtained nanocomposites was evaluated. Finally, from these sets of experiments, it was demonstrated that the synthesized nanocomposites with higher molar fractions of 4VP obtained the highest removal percentages of ATZ.

scholarly journals Synthesis and Characterization of Ligand‐Linked Pt Nanoparticles: Tunable, Three‐Dimensional, Porous Networks for Catalytic Hydrogen Sensing

ChemistryOpen ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 697-712
Author(s):  
Daniel Loof ◽  
Oliver Thüringer ◽  
Marco Schowalter ◽  
Christoph Mahr ◽  
Anmona Shabnam Pranti ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Pt Nanoparticles ◽  
Synthesis And Characterization ◽  
Hydrogen Sensing ◽  
Porous Networks ◽  
Catalytic Hydrogen
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