Organic−inorganic hybrid mesoporous anion-exchange resins based on either pure silica or organosilica support materials were prepared and tested for the adsorption of perrhenate (ReO4-) anions in aqueous solutions. The samples characterized using nitrogen adsorption−desorption measurements, Fourier transform infrared spectroscopy, Raman small-angle X-ray scattering, 29Si cross-polarization/magic-angle-spinning nuclear magnetic resonance, scanning transmission electron microscopy. Among...

A new methodology to immobilize ionic liquids through the use of a bridged silsesquioxane N-(3-triethoxysilylpropyl), N(3)-(3-trimethoxysilylpropyl-4,5-dihydroimidazolium iodide that incorporates an functionality for assembly novel periodic mesoporous organosilica (PMO) materials has been developed. The resulting PMO were investigated as anion exchange resins separation perrhenate anions in aqueous solution. As compared with cetyltrimethylammonium chloride, 1-hexadecane-3-methylimidazolium...

Inorganic−organic hybrid SiO2 sol−gels anchored with amino (NH2−CH2CH2−NH-, TMSen, and −NH−CH2CH2−NH-, Bis-TMSen) mercapto (HS-) ligands have been studied as new sorbents for Cu2+ separation. The TMSen-anchored gels were found to be selective removal in the presence of Cd2+ Zn2+. In comparison, mercapto-anchored remove both from a mixture Cu2+, Cd2+, These ligand-anchored materials, which easily prepared off-the-shelf chemicals ca. 1 h, hydrophilic thus may give potentially fast kinetics...

We developed a highly elastic customized scaffold for soft tissue regeneration and combined them with bioactive hydrogels stem cell-inducing ability. This was done to mimic mechanical properties of native tissues improve the viability transplanted cells as well efficiency regeneration. The proposed study aimed at evaluating various characteristics scaffolds investigating their tissue-regenerating Finger-shaped porous were successfully fabricated by an indirect 3D printing poly...

Abstract Prompt gamma ray neutron activation analysis (PGNAA) is an efficient nondestructive multi-elemental detection technique for samples such as metals, coal (mineral), cement, and radioactive materials well explosives, chemical warfare agents, various narcotics, land mines, etc. The can be used in the laboratory or on-site samples. In addition, PGNAA elemental provide more accurate results with low false alarm variety of application fields when combined image scanning chemometric...

Reactions of MCl5 (M = Nb, Ta) with LiNMe2 have been found to yield M(NMe2)4(η2-MeNCH2NMe2) 2a; Ta, 2b) containing a chelating ligand (dimethylaminomethylene)methylamide, as confirmed by NMR spectroscopy, DFT calculations, and their reactivity studies.

Transparent, crack-free mesoporous silica sol–gel monolith 2 was prepared from the hydrolysis of Si(OMe)4 in MeOH containing ethylene glycol (HOCH2CH2OH). Gradual exposure product 1 to MeOH/H2O and then H2O helps prevent cracking monolith. Direct reaction chelating diamine H2N(CH2)2NH(CH2)3Si(OMe)3 with gave diamine-grafted 3. Imprint-grafting Cu2+ complex Cu[H2N(CH2)3Si(OMe)3]42+ yielded 5 grafted monoamine ligand H2N(CH2)3Si(O–)3 (APS). BET studies showed that average pore size...

The sol−gel technique has been used to prepare film-like iron/silica substrates for the large-scale growth of highly aligned carbon nanotubes. Here, we show that by using transmission electron microscopy (TEM) grids as shadow masks, can be readily adapted patterned substrates, on which various kinds micropatterns vertically nanotubes fabricated. Not only were composed regularly arranged nanotube towers (when viewed from top) squares and hexagons obtained, but also patterns consisting complex...

A Pechini-type, in-situ polymerizable complex (IPC) method was demonstrated as applicable to the synthesis of nanocrystalline multicomponent metal oxides with reproducibility and reasonable yield. In oleic acid–octyl ether reaction media, nanocrystalline, phase-pure Y2O3:Ln (Ln = Ce or Eu) samples were prepared size ranges from 6 14 nm at 40% Sample sizes morphology characterized by TEM, XRD, Raman spectroscopy. The amount Eu dopants identified quantitatively ICP-AE analysis....

This research highlights opportunities in the formulation of neutron scintillators that not only have high scintillation efficiencies but also can be readily cast into two-dimensional detectors. Series transparent, crack-free monoliths were prepared from hybrid polystyrene-silica nanocomposites presence arene-containing alkoxide precursor through room temperature sol-gel processing. The contain lithium-6 salicylate as a target material for neutron-capture reactions and amphiphilic...

Laser-induced fluorescence was applied for the detection of lanthanide ions such as Tb3+ and Sm3+ in a pyrochemical processing. The signals LiCl-KCl molten salts were successfully observed at room temperature. Moreover, method identified to be sensitive enough detect trace Eu2+, originated from reduction Eu3+ contained eutectic reagent given high temperature salt condition. non-destructive direct measurement can an alternative on-line situ determination species concentrations lanthanides...

An important element in the development of advanced neutron detectors is synthesis and characterization improved, highly efficient neutron-scintillating materials. The research described here concerns elastic, transparent, thick film scintillators with high Li+6 loading through room-temperature sol-gel processing. processing allows an easy integration such scintillating materials into electronic detecting devices. lithium-6 salicylate di-ureasil xerogels developed show promise for...

A new transparent neutron-scintillating material has been developed based on polystyrene-block-poly(ethylene oxide). The unique self-assembly structure of the block copolymer makes it possible to dope hydrophilic Li+ in ethylene-oxide domain and hydrophobic organic fluors styrene (see Figure).

EPR spectroscopic technique was applied for a quantitative analysis of Eu(II) speciation europium in LiCl-KCl eutectic melt. By adopting the first absorption line each isotopes (151Eu and 153Eu), calibration plot obtained. The intensity shows good linearity according to amount Eu(II). identified increase proportionally with decrease attenuation parameter microwave power. fluorescence used qualitatively find whether either or Eu(III) ions exists molten salt sample. ICP-AES also adopted...