The specific heat capacity of Apiezon N high vacuum grease and of Duran borosilicate glass have been measured in the temperature range 16.2–319K and 1.75–323K, respectively. Apiezon N has a large heat capacity at low temperatures and displays a step-like anomaly at ≈215K and a peak-shaped tra...

Innovative photoresponsive polypropylene (PP) fibers were successfully fabricated via melt spinning through the incorporation of UV-responsive hybrid [email protected] nanomaterials during the fibers production.Firstly, photochromic hybrid nanomaterials were prepared by immobilization of negativ...

Keggin-type modified ammonium salts of molybdophosporic acid were prepared by partial substituting of the ammonium ions by X (X = SbIII, BiIII or SnII) ions. They were characterised by BET method, XRD, 31P NMR, UV–Vis, Raman, IR spectroscopies and thermal analysis (TG and DTA). It appeared that...

Mixed ammonium-transition metal salts with formula of (NH4)xMyHzPMo12O40 (M = Ni2+, Co2+ or Fe3+) denoted as MPMo12 have been investigated for the oxidation of propane, with molecular oxygen, at temperature range between 380 °C and 420 °C after in-situ pre-treatment performed at two heating ra...

Phosphomolybdic acid (HPMo) modified respectively with tetramethyl ammonium chloride (TMAC), dodecyl trimethyl ammonium chloride (DTAC) and hexadecyl trimethyl ammonium chloride (HTAC) as the catalysts were prepared and characterized by FT-IR, XRD and SEM. The catalysts were evaluated for the ox...

The adsorption mechanisms of NH4+ and Cs+ on phosphomolybdate ion were investigated in detail by density functional theory (DFT). The computational results indicate that [PMo12O40]3− is a cage-like structure formed by the three-membered rings and four-membered rings constructed by the MoO bonds....

A green mechanochemical technique has been developed for the synthesis of mixed ammonium silver phosphomolybdate salt, (NH4)1.6Ag1.4PMo12O40.4H2O with sheet-like nanostructure. The reaction was prompted using acetamide/NH4NO3 at room temperature. The change of driving agent to urea at the same c...

In the present paper, new H2S gasochromic nanomaterial of mixed silver nickel ammonium phosphomolybdate synthesized by microwave assisted technique is reported. The microwave treatment was performed in the solid phase using urea and ammonium nitrate as the promoter and oxidizer agents. The desig...

Efficient direct synthesis of new monomeric and stable J-type dimeric species of 2-hydroxy-9(10),16(17),23(24)-tri-tert-butylphthalocyaninato aluminum with high yields, including preparation of the corresponding dimeric free-base ligand at ambient conditions, has been developed. The compounds we...

Single-step, contactless femtosecond laser micromachining of substrates to impart specific surface morphologies has been the focus of considerable recent work. This work has primarily focused on experimentation with metallic substrates, with fs-laser micromachining of polymeric materials being i...

Ion-imprinted polymers (IIPs) exhibit great potential as the adsorbent for adsorption of palladium from the industrial wastewater. However, co-existence of complicated water matrixes can readily block the imprinting cavities and disturb the adsorption of target ions. Therefore, it is meaningful ...

In this paper chemical vapor deposition (CVD) method is presented for the preparation of chelate polymer film as constituent for organic electroluminescent (EL) devices. The chelate polymer film, poly(bis(8-hydroxy-5-quinolyl)methane aluminum), was thermally converted into by simultaneously co-e...

Mussel-inspired polymer has long been desired for the next generation high adhesion strength bioadhesives. However, the currently synthetic method of mussel-inspired polymer was based on the conventional thermal polymerization. A large majority of thermal polymerizations need solvents, these sol...

Three cross-linked hydroxy-aluminum bentonites were synthesized by reactions of Na-bentonite respectively with three hydroxy-Al polymers with different polymeric degrees. Acidity of cross-linked hydroxy-Al bentonites with same amounts of bentonite and aluminum entering the clay interlayers incre...

Four aluminum alkoxide complexes containing β-hydroxy-imino ligands, [(2,6-Me2C6H3)NCPhCH2CPh2O]2AlMe (3a), [(2,6-iPr2C6H3)NCPhCH2CPh2O]2AlMe (3b), [(2,6-Me2C6H3)NCPhCH2C(C12H8)OAlMe2]2 (3c) and [(2,6-iPr2C6H3)NCPhCH2C(C12H8)OAlMe2]2 (3d) were synthesized in high yields, and their structural fe...

The presence of the hydroxy-aluminium polymer (Al13-(OH)24O4(H2O)7+12) was noticed inside synaptosomes when synaptosomes were incubated with Al(NO3)3 at neutral pH values. Dysprosium nitrate (Dy(NO3)3) - a shift reagent - facilitates the identification of the Al13 species distinctly inside the s...

Radiocesium (RCs) is selectively adsorbed on interlayer sites of weathered micaceous minerals, which primarily controls the mobility of RCs in the soil environment. Pedogenesis under acidic condition (under wetter climate regime) implies that RCs adsorption sites may be covered with soil organic...

Blue ultramarine pigments with composition Na7.7[(Al,Si)12O24] · (SO4)0.9(S3)0.8 and Na6.5K0.5[(Al,Si)12O24] · (SO4)0.9(S3)0.7 were synthesized in order to get a deep knowledge of its structure and microstructure. These pigments were prepared following the current industrial method synthesis, ...

A specific case of synthetic ultramarine degradation was observed in three oil paintings from the early 20th century. Pigment particles were found to have been discoloured, resulting in intricate patterns of white lines, approximately 10 to 30 microns wide, criss-crossing the paint surface. Colo...

Pigments analogous to ultramarine with various colors including pink have been prepared mainly from zeolites A and also from X by a thermal treatment with sulfur and various amounts of Cs2CO3. The bulky Cs+ cations introduced into zeolites reduce markedly a size of their pore openings and that o...