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Lignosulfonate and silica as precursors of advanced composites

Abstract

Advanced silica/lignosulfonate composites were obtained using magnesium lignosulfonate and silica precipitated in a polar medium. For comparative purposes analogous synthesis was performed using commercial silica Aerosil®200. Lignosulfonates are waste products of paper industry and their application in new multifunctional materials is of great economic interest. The composites obtained were subjected to thorough characterization by determination of their physicochemical, dispersive-morphological and electrokinetic properties. Their particle size distribution was measured, SEM images were taken, FT-IR analysis and colorimetric study were made, thermal and electrokinetic stabilities and parameters of porous structure were also determined. The results can be of interest in further application studies

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Structural and textural characterisation of NiMo catalysts supported on various zeolites

Structural and textural characterisation of NiMo catalysts supported on various zeolites

Structural and textural properties of nickel-molybdenum catalysts supported on four various type of zeolites of different chemical composition and porous structure have been studied by the methods of IR, XRD and the low-temperature sorption of nitrogen. The catalysts have been obtained by the two-stage impregnation of the supports with the solutions of nickel and molybdenum salts by the method of incipient wetness. The catalysts have been shown to preserve the structure characteristic of the appropriate zeolite supports.

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Use of MgO to Promote the Oxyethylation Reaction of Lauryl Alcohol

Abstract

Synthesis of magnesium hydroxide was performed by the precipitation method with the use of magnesium sulfate and sodium hydroxide. The infiuence of temperature and ratio of reagents was studied. Magnesium hydroxides, and the magnesium oxides obtained from them by thermal decomposition, were analyzed to determine their bulk density, polydispersity and particle size. The magnesium oxide with the largest surface area was tested as a catalyst in the oxyethylation of lauryl alcohol, and shown to be selective but poorly reactive in comparison with commercially available catalysts. Further studies are needed to improve its reactivity.

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Influence of the structural and surface properties on photocatalytic activity of TiO2:Nd thin films

Abstract

Titanium dioxide thin films doped with the same amount of neodymium were prepared using two different magnetron sputtering methods. Thin films of anatase structure were deposited with the aid of Low Pressure Hot Target Magnetron Sputtering, while rutile coatings were manufactured using High Energy Reactive Magnetron Sputtering process. The thin films composition was determined by energy dispersive spectroscopy and the amount of the dopant was equal to 1 at. %. Structural properties were evaluated using transmission electron microscopy and revealed that anatase films had fibrous structure, while rutile had densely packed columnar structure. Atomic force microscopy investigations showed that the surface of both films was homogenous and consisted of nanocrystalline grains. Photocatalytic activity was assessed based on the phenol decomposition. Results showed that both thin films were photocatalytically active, however coating with anatase phase decomposed higher amount of phenol. The transparency of both thin films was high and equal to ca. 80% in the visible wavelength range. The photoluminescence intensity was much higher in case of the coating with rutile structure.

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Morphology and mechanical properties of polyamide 12 (PA12)/poly(vinylidene fluoride) (PVDF) blends

References Zdrazilowa, N., Hausnerova, B., Kitano, T. & Saha, P. (2004). The role of various modifiers in the compatibilisation of PP/PET blends — rheological and structural properties. Polimery (Warsaw) 49, 819-827. Janik, J., Lenart, S., Królikowski, W. & Penczek, P. (2004) Polymer blends PET/PE-LD and PET/PP with a new compatibilizer. Polimery (Warsaw) 49, 432-439. Bryan, E. & Ray, S. (2009) Polymers a propertity database , CRC Press, Roca Baton

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Photocatalytic properties of transparent TiO2 coatings doped with neodymium

of Eu dopant on optical properties of TiO2 thin fi lms fabricated by low pressure hot target reactive sputtering. Opt. Appl . 37, 117-122. 15. Xie, Y. & Yuan, Ch. (2004). Photocatalysis of neodymium ion modifi ed TiO2 sol under visible light irradiation. Appl. Surf. Sci. 221, 17-24. (http://dx.doi.org/10.1016/S0169- 4332(03)00945-0). 16. Kaczmarek, D., Prociow, E., Domaradzki, J., Borkowska, A., Mielcarek, W. & Wojcieszak, D. (2008). Infl uence of substrate type and its placement on structural properties of TiO2 thin fi lms

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The plasticizing effect of properties of manganous chloride and glycerin on poly(vinyl alcohol)

.M. (2003). Structural properties of CrF3 and MnCl2 fi lled poly (vinylalcohol) fi lms. J. Appl. Polym. 88, 516-521. DOI: 10.1002/app.12044. 15. Ismail, H. & Zaaba, N.F. (2011). Effect of additives on properties of polyvinyl alcohol (PVA)/tapioca starch biodegradable fi lms. Polymer-Plastics Technology and Engineering, 50, 1214-1219. DOI: 10.1080/03602559.2011.566241. 16. Tang, X. & Alavi, S. (2011). Recent advances in starch, polyvinyl alcohol based polymer blends, nanocomposites and their biodegradability. Carbohydr. Polym., 85(1), 7

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Impact of paint matrix composition and thickness of paint layer on the activity of photocatalytic paints

., Raju, N. & Subrahmanyam, A. (2011). Thickness dependent physical and photocatalytic properties of ITO thin fi lms prepared by reactive DC magnetron sputtering. Appl. Surf. Sci. 257, 3075-3080. DOI: 10.1016/j.apsusc.2010.10.119. 26. Chen, Y. & Dionysiou, D. (2006). Correlation of structural properties and fi lm thickness to photocatalytic activity of thick TiO2 fi lms coated on stainless steel. Appl. Catal. B. 69, 24-33. DOI: 10.1016/j.apcatb.2006.05.002. 27. Wu, C., Lee, Y., Lo, Y., Lin, C. & Wu, C. (2013). Thickness- dependent

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A Novel method for Thermodynamic Study on the Binding of Milk Carrier protein of BLG-A with Cr+3

.12.010. Busti, P., Gatti C. A. & Delorenzi, N. J. (1998). Some aspects of β-lactoglobulin structural properties in solution studied by fluorescence quenching. Int. J. Biol. Macro. 23 (2), 143-148. DOI: 10.1016/S0141-8130(98)00037-3. Lange, D. C., Kothari, R., Patel, R. C. & Patel, S. C. (1998). Retinol and retinoic acid bind to a surface cleft in bovine ß-lactoglobulin: a method of binding site determination using fluorescence resonance energy transfer. Biophys.Chem. 74 (1), 45-51. DOI: 10.1016/S0301

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Treatment of produced water by induced air flotation: effect of both TWEEN 80 and ethanol concentrations on the recovery of PAHs

from oily wastewater by combined coagulation pretreatment and mechanically induced air flotation. Desalin. Water Treat. 53: 300-308. Karjiban RA, Basri M, Rahman MBA, Salleh AB (2012) Structural properties of nonionic Tween80 micelle in water elucidated by molecular dynamics simulation. APCBEE Procedia 3: 287-297. Kowalczuk PB (2013) Determination of critical coalescence concentration and bubble size for surfactants used as flotation frothers. Ind. Eng. Chem. Res. 52: 11752-11757. Lau EV, Foo KL, Poh PE (2013) The

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