The potential re-use of red mud in the building and construction industry has been subject research many scientists. presented is a contribution to solution this environmental issue through synthesis materials based on mud. A promising way recycling these secondary raw alkali-activated binders or alkali activated materials. Alkali-activated inorganic are new class obtained by activation precurs...

From the biochemical standpoint, perhaps the most striking effect of ionizing radiations on living systems involves a defect in the metabolism of the nucleic acids. Thus, one can cite a large number of observations in the literature (1, 18, 14, 16, @8) which state that the incorporation of a variety of labeled precursor substances (inorganic phos phate, formate, NaHCO5, glycine) into tissue des...

In this work we demonstrate that the different processes occurring during hybrid organic-inorganic lead iodide perovskite film formation can be identified and analyzed by a combined in situ analysis of their photophysical and structural properties. Our observations indicate that this approach permits unambiguously identifying the crystal nucleation and growth regimes that lead to the final mate...

We report in this paper novel chemistry that addresses the problem of surfactant solubility in supercritical CO2 for metal nanoparticle synthesis. This new approach for the preparation of organic-functionalized inorganic nanoparticles relies on the reduction of a metal precursor in a CO2-containing insoluble polymer. Reduction of the metal with H2 leads to small nanocrystals stabilized by the p...

Biological templates such as virions or protein assemblies have several surface functional groups that can complicate the elucidation of the fundamental mechanism(s) governing the sorption and mineralization of metals on the surface of the template. Surface functionalized silica nanoclusters with hydroxyl, amine, or thiol groups serve as surrogates for understanding the interaction between indi...

A chemistry-based approach to designing precursors for the deposition of inorganic films requires consideration of the physical properties of the precursor compound (e.g., volatility for transport in the reactor) and its probable decomposition pathways, both in the gas phase and on the surface during growth. We have been using Aerosol-Assisted Chemical Vapor Deposition of tungsten carbonitride ...

Porous organic–inorganic materials with tunable textural characteristics were synthesized using the topdown process by intercalating silsesquioxanes and polyhedral oligomeric siloxanes of different types between crystalline zeolite-derived layers. The influence of key parameters such as (i) linker nature (pure hydrocarbon, S-, N-containing); (ii) chain length in alkyland aryl bis(trialkoxysilyl...

Organic–inorganic CH3NH3PbCl3 perovskite nanocrystals (PNCs) doped with Mn2+, CH3NH3PbxMn1−xCl3, have been successfully prepared using a reprecipitation method at room temperature. Structural and morphological characterizations reveal that the CH3NH3PbxMn1−xCl3 PNCs with cubic phase transforms from particles to cubes and increases in size from 16.2 ± 4.4 nm in average diameter to 25.3 ± 7.2 nm ...

The effect of various types of antitumor com pounds on nucleic acid metabolism has been in vestigated in order to determine more precisely the mechanism of drug action. This was effected through observations on the influence of the agents upon the incorporation of a labeled precursor into the nucleic acids of an experimental tumor. Simi lar investigations have been reported by others (4, 12, 13...

Bioencapsulation of microbial cells in silica-based matrices has proved to be a good strategy to enhance the biosynthetic capabilities and viability of bioproducers. In the present study, mycelium and pellet cultures of strain Aspergillus oryzae PP were successfully immobilized in sol-gel hybrid matrices composed of tetraethylorthosilicate as an inorganic precursor, 5% (w/v) starch and 10 or 15...