Iron/carbon nanocomposite

In Figure 8.25 you can see IR spectrum of iron/carbon nanocomposite based on water solution of sodium lignosulfonate in comparison with IR spectrum of water solution of surface-active substance. 

FIGURE 8.25 Comparison of IR spectra of water solution of sodium lignosulfonate (1) and FS of iron/carbon nanocomposite (0.001%) based on this solution on the first day after nanocomposite introduction (2), on the third day (3), on the seventh day (4), 14th day (5) and 28th day. (6)... 

At the same time, the oscillatoiy nature of the influenee of these nano-eomposites on the eompositions of foam concretes is seen in the feet that if the amount of nanocomposite is 0.0018% from the cement mass, the significant decrease in the strength of NCI and NC2 is observed. The increase in foam concrete strength after the modification with iron/carbon nanocomposite is a htde smaller in comparison with the effects after the application of NCI andNC2 as modifiers. The corresponding efiects after the modification of cement, silicate, g sum, and concrete compositions with NS is defined by file features of components and technologies applied. 

Wang, Z., Yusop, M. Z. M., Hihara, T. et al. 2010. Eormation and growth mechanisms of ion-induced iron-carbon nanocomposites at room temperature. Applied Surface Science 256 6371-6374. 

When modifying pol5winyl chloride film with fine suspension containing iron/carbon nanocomposite, the increase of the crystalline phase in the material was observed. The PVC film modified containing 0.0008% of NC does not accumulate the electrostatic charge on its surface. The material obtained completely satisfies the requirements applied to PVC films for stretch ceilings. 

Figure 15.6 Schematic representation of the synthesis of hierarchical carbon nanocomposites. After Fe electrodeposition and subsequent iron-catalyzed growth of CNTs from cyclohexane at 1323 K, again Fe was...

Recently, several metal oxides apart from silica have been investigated and reported for mbber-based nanocomposites. Some important and commercially meaningful oxides used in rubber are zinc oxide (ZnO), magnesium hydroxide (MH), calcium carbonate, zirconate, iron oxide, etc. 

Leconte, Y. et al.. Continuous production of water dispersible carbon-iron nanocomposites by laser pyrolysis Application as MRI contrasts, J. Colloid Interf. Sci., 313. 511, 2007. 

In addition to the above, preparation in w/o microemulsions of nanoparticles of various other types of compounds, viz. silica-coated iron oxide, Fe203-Ag nanocomposite, oxides of ytrium, erbium, neodymium, vanadium and cobalt, titanates of barium and lead, ferrites of barium, strontium, manganese, cobalt and zinc, oxide superconductors, aluminates, zirconium silicate, barium tungstate, phosphates of calcium, aluminium and zinc, carbonates of calcium and barium, sulphides of molybdenum and sodium, selenides of cadmium and silver etc. have been reported. Preparative sources and related elaboration can be found in [24]. 

CNTs can be combined with various metal oxides for the degradation of some organic pollutants too. Carbon nanotubes/metal oxide (CNT/MO) composites can be prepared by various methods such as wet chemical, sol gel, physical and mechanical methods. To form nanocomposite, CNTs can be combined with various metal oxides like Ti Oj, ZnO, WO3, Fc203, and AI2O3. The produced nanocomposite can be used for the removal of various pollutants. Nanoscale Pd/Fe particles were combined with MWNTs and the resulted composite was used to remove 2,4-dichlorophenol (2,4-DCP). It was reported that the MB adsorption was pH-dependent and adsorption kinetics was best described by the pseudo-second-order model. Iron oxide/CNT composite was reported to be efficient adsorbent for remediation of chlorinated hydrocarbons. The efficiency of some other nanocomposites such as CNT/ alumina, CNT/titania and CNT/ZnO has also been reported [60-62]. 

Lin, C.-Y., Balamurugan, A, Lai, Y.-H., and Ho, K.-C. (2010). A novel poly(3,4-ethylenedio5q4 hiophene)/iron phthalocyanine/multi-wall carbon nanotubes nanocomposite with high electrocatatytic activity for nitrite oxidation, Talanta, 82, pp. 1905-1911. 

There are indeed some other methods for producing silicon-based nanocomposites that appeared in the literature. Considerable work has been performed by J. Dahn s group and the decomposition of silane or polysilane pitch within carbonaceous matrices has been widely explored. Other methods based on HEMM of electrochemically inactive phases such as iron, nickel, titanium-nickel, titanium-carbon, silicon-carbon, and so on also have been examined using silicon powder with an initial particle grain size within either micrometric or nanometric ranges. The common problem in all these cases is that it is difficult to predict theoretically the appropriate matrix/silicon particles combination, i.e., there is no simple guidance rule in order to make reasonable predictions. An overview of all the above-described methods is summarized in Table 11.3. 

Major Applications Nanocomposite material, chemical mechanical polishing, optical fibers, display device, carbon nanombes, ° textiles," determination of aluminum, iron," copper, manganese, zinc, calcium, magnesium, zirconium, hafnium, molybdenum, uranium, vanadium, detergents, hair dyes, determination of proteins, clotrimazole, ketoconazole, piroxicam, and tenoxicam ... 

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