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Removal of azo dye by synthesized TiO2nanoparticles

100%
Amin M. S. A., Uddin M. J., Islam M. A.
Nanomaterials and the Environment
|
2013
|
vol. 1
18-22
EN
TiO2 nanoparticles were synthesized by one-step Sol-gel method. Prepared nanoparticles were characterized by different characterization (SEM, EDS and XRD) techniques. The aqueous solution of Methylene Blue (MB) has been subjected to evaluate the photocatalytic degradation by UV radiation in the presence of synthesized TiO2 photocatalyst coated reactor. The experiments were conducted with and without aeration, using different dye concentrations, and catalyst loading, revealed that the degradation was strongly influenced by respective experimental parameters. However, maximum MB dye was removed by the photodegradation process operating with aeration and higher catalyst dosing.
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TiO2-doped resorcinol–formaldehyde (RF) polymer and carbon gels with photocatalytic activity

75%
Czakkel O., Geissler E., Szilágyi I. M., László K.
Nanomaterials and the Environment
|
2013
|
vol. 1
23-30
EN
Resorcinol-formaldehyde (RF) polymer gels offer a relatively easy and versatile route for incorporating metals into a carbon aerogel matrix. The hybrid materials thus obtained are ideal candidates for applications involving enhanced adsorption or catalysis. This paper presents a detailed study of Ti-doped RF and carbon aerogels. The metal was introduced into the system at three different stages of the preparation process: during polymerization, by impregnation of the RF gel, or by impregnation of the carbon gel. The structure and morphology of the samples are compared using low temperature N2 adsorption, SEM, and small and wide angle X-Ray scattering (SAXS/WAXS) methods. The TiO2-doped carbon aerogels display photocatalytic activity in breaking down aromatic compounds.
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