01819nas a2200265   4500008004100000022001400041245011900055210006900174260007300243300001000316490000700326520085300333653002701186653002101213653001901234653002801253653002401281100002001305700002101325700001801346700002201364700002501386700002101411856012101432       2011                        eng d  a0927-776500aSynthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity0 aSynthesis of silver nanoparticles in an aqueous suspension of gr  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a16-220 v833 a<p>A solution-based approach to the synthesis of silver (Ag) nanoparticles by chemical reduction of AgNO3 in a graphene oxide (GrO) suspension is demonstrated. X-ray diffraction and transmission electron microscopy indicate that the Ag nanoparticles, of size range 5-25 nm, were decorated on the GrO sheets. The size and shape of the Ag nanoparticles are dependent on the concentration of the AgNO3 solution. Antimicrobial activity of such hybrids materials is investigated against the Gram negative bacteria Escherichia coli and Pseudomonous aeruginosa. The bacterial growth kinetics was monitored in nutrient broth supplemented with the Ag nanoparticle-GrO suspension at different conditions. It was observed that P. aeruginosa is comparatively more sensitive to the Ag nanoparticle-GrO suspension. (C) 2010 Elsevier B.V. All rights reserved.</p>10aAntimicrobial activity10aEscherichia coli10agraphene oxide10aPseudomonous aeruginosa10aSilver nanoparticle1 aDas, Manash, R.1 aSarma, Rupak, K.1 aSaikia, Ratul1 aKale, Vinayak, S.1 aShelke, Manjusha, V.1 aSengupta, Pinaki  uhttps://library.ncl.res.in/content/synthesis-silver-nanoparticles-aqueous-suspension-graphene-oxide-sheets-and-its-002517nas a2200241   4500008004100000022001400041245017300055210006900228260011000297300001600407490000600423520150400429100002201933700002701955700002601982700003102008700002202039700002502061700002002086700001802106700002002124856013102144       2016                        eng d  a2046-206900aSunlight assisted degradation of dye molecules and reduction of toxic Cr(VI) in aqueous medium using magnetically recoverable Fe3O4/reduced graphene oxide nanocomposite0 aSunlight assisted degradation of dye molecules and reduction of   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a11049-110630 v63 a<p>In view of the significant impact of magnetically recoverable catalysts in photocatalytic applications, Fe3O4/reduced graphene oxide (rGO) nanocomposite photocatalyst was synthesized by adopting an eco-friendly solution chemistry approach and has been characterized by high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and photoluminescence (PL) spectroscopy. Fe3O4/rGO nanocomposite is efficiently utilized towards photocatalytic degradation of carcinogenic and mutagenic cationic as well as anionic dye molecules namely methyl green (MG), methyl blue (MB) and rhodamine B (RhB) under direct sunlight irradiation. The Fe3O4/rGO nanocomposite also demonstrated excellent photocatalytic reduction of aqueous Cr(VI) solution to nontoxic aqueous Cr(III) solution of more than 96% within 25 min under sunlight irradiation. Moreover, reusability of the magnetically recovered photocatalyst was studied efficiently up to 10 cycles in the degradation process. The catalyst was also characterized after the degradation of the dye molecule and the particle size of the Fe3O4 nanoparticles on the rGO sheets remained unchanged. The present investigation focuses on the importance of the use of Fe3O4/rGO nanocomposite towards photocatalytic degradation of waste water containing organic dye pollutants and toxic Cr(VI), as an easily recoverable and reusable photocatalyst with potential for many environmental remediation applications.</p>1 aBoruah, Purna, K.1 aBorthakur, Priyakshree1 aDarabdhara, Gitashree1 aKamaja, Chaitanya, Krishna1 aKarbhal, Indrapal1 aShelke, Manjusha, V.1 aPhukan, Pallabi1 aSaikia, Dulen1 aDas, Manash, R.  uhttps://library.ncl.res.in/content/sunlight-assisted-degradation-dye-molecules-and-reduction-toxic-crvi-aqueous-medium-using-0