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SYNTHESIS AND CHARACTERIZATION OF NANOSIZED Mg(OH)2 AND ITS NANOCOMPOSITE WITH POLY (VINYL ALCOHOL)
R. ANBARASAN,M. FATHIMA PARVEEN,S. UMAPATHY,V. DHANALAKSHMI 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2009 NANO Vol.4 No.3
Nano-Mg(OH)2 was synthesized by co-precipitation method. Peaks between 500 and 1250 cm-1 in FTIR spectroscopy confirmed the presence of metal hydroxide stretching. TGA inferred that above 600°C, 50% of residue weight remained. HRTEM of nanocomposite gave an idea about the nonspherical morphology of particles of size 25 nm to 30 nm. SEM inferred that flower-like morphology for pristine Mg(OH)2 and higher % weight of aniline-intercalated Mg(OH)2 had agglomerated structure. UV visible spectrum inferred the presence of Mg2+ ion at 275 nm and the presence of amino-group-intercalated Mg(OH)2, which had a sharp peak at 193 nm and the intensity of which increases with the increase in % weight of aniline. PL inferred that aniline-intercalated Mg(OH)2 showed a lower intensity of which increased with higher wavelength value than the pristine and nanocomposite with PVA.
S. Shanavas,A. Priyadharsan,E.I. Gkanas,R. Acevedo,P.M. Anbarasan 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.72 No.-
The photoexcited charge carriers trapping was an effective way to generate a large number of activespecies like O2 and OH radicals to oxidize pharmaceutical molecules. In ternary Cu/Bi2Ti2O7/rGOcomposite Cu nanoparticles and rGO sheets act as charge carrier trappers and the suppression of e -h+pair recombination was confirmed by Photoluminescence analysis. The Cu/Bi2Ti2O7/rGO compositeexhibited higher photocatalytic degradation efficiency for degradation of ibuprofen and tetracyclinemolecules under visible light irradiation within 90 min. Therefore, this research designates a promisingstrategy for higher photoexcited charge carrier trapping photocatalyst design for efficient degradation ofpharmaceutical molecules.