01393nas a2200241   4500008004100000022001400041245012700055210006900182260011000251300001400361490000700375520044900382100002400831700002000855700001700875700002000892700001700912700002500929700001800954700002300972700002500995856013101020       2011                        eng d  a1463-926200aFrom graphite oxide to highly water dispersible functionalized graphene by single step plant extract-induced deoxygenation0 aFrom graphite oxide to highly water dispersible functionalized g  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL  a1990-19960 v133 a<p>We report a single step facile synthesis of highly water dispersible functionalized graphene nanosheets by plant extract-induced deoxygenation of graphite oxide (GO). The results of various characterizations reveal that the properties of such plant extract-converted graphene nanosheets (PCGN) are comparable to chemically converted graphene nanosheets (CCG). These results open a green route to the emerging graphene-based technologies.</p>1 aMhamane, Dattakumar1 aRamadan, Wegdan1 aFawzy, Manal1 aRana, Abhimanyu1 aDubey, Megha1 aRode, Chandrashekhar1 aLefez, Benoit1 aHannoyer, Beatrice1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/graphite-oxide-highly-water-dispersible-functionalized-graphene-single-step-plant-extract-002759nas a2200253   4500008004100000022001400041245009800055210006900153260009200222300001200314490000700326520187800333653001202211653000802223653000902231653001902240653000902259100002502268700002302293700002002316700002002336700002002356856012902376       2012                        eng d  a1533-488000aPhotocatalytic degradation of Azo dyes using Au:TiO2, gamma-Fe2O3:TiO2 functional nanosystems0 aPhotocatalytic degradation of Azo dyes using AuTiO2 gammaFe2O3Ti  a26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USAbAMER SCIENTIFIC PUBLISHERScFEB  a928-9360 v123 a<p>We report photocatalytic degradation studies on Navy Blue HE2R (NB) dye on significant details as a representative from the class of azo dyes using functional nanosystems specifically designed to allow a strong photocatalytic activity. A modified sol-gel route was employed to synthesize Au and gamma-Fe2O3 modified TiO2 nanoparticles (NPs) at low temperature. The attachment strategy is better because it allows clear surface of TiO2 to remain open for photo-catalysis. X-ray diffraction, Raman and UV-VIS spectroscopy studies showed the presence of gold and iron oxide phases along-with the anatase TiO2 phase. TEM studies showed TiO2 nanocomposite particles of size similar to 10-12 nm. A detailed investigation on heterogeneous photocatalytic performance for Navy Blue HE2R dye was done using the as-synthesized catalysts Au:TiO2 and gamma-Fe2O3:TiO2 in aqueous suspension under 8 W low-pressure mercury vapour lamp irradiation. Also, the photocatalytic degradation of Amranth and Orange G azo dyes were studied. The surface modified TiO2 NPs showed significantly improved photocatalytic activity as compared to pure TiO2. Exposure of the dye to the UV light in the presence of pure and gold NPs attached TiO2 catalysts caused dye degradation of about similar to 20% and similar to 80%, respectively, in the first couple of hours. In the presence of gamma-Fe2O3 NPs attached TiO2, a remarkable similar to 95% degradation of the azo dye was observed only in the first 15 min of UV exposure. The process parameters for the optimum catalytic activity are established which lead to a complete decoloration and substantial dye degradation, supported by the values of the Chemical Oxygen Demand (COD) similar to 93% and Total Organic Carbon (TOC) similar to 65% of the treated dye solution after 5 hours on the employment of the UV/Au:TiO2/H2O2 photocatalytic process.</p>10aAzo Dye10aCOD10aH2O210aPhotocatalysis10aTiO21 aJagadale, Tushar, C.1 aKulkarni, Manjusha1 aPravarthana, D.1 aRamadan, Wegdan1 aThakur, Pragati  uhttps://library.ncl.res.in/content/photocatalytic-degradation-azo-dyes-using-autio2-gamma-fe2o3tio2-functional-nanosystems-0