01265nas a2200205   4500008004100000022001400041245006700055210006700122260009900189300001200288490000700300520052600307653002400833653003500857653001800892100002100910700001700931700001300948856009800961       2005                        eng d  a0272-884200aSynthesis of bismuth oxide nanoparticles by citrate gel method0 aSynthesis of bismuth oxide nanoparticles by citrate gel method  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJAN  a889-8910 v313 a<p>A mixture of bismuth nitrate and citric acid solution is taken in 1: 1 molar ratio and heated on hot water bath. A gel is formed on evaporation of the water, which on decomposition at 400 degrees C produces nanocrystalline Bi2O3 particles. Formation of nanocrystallites of Bi2O3 is confirmed by X-ray diffraction (XRD) study. Transmission electron microscope (TEM) investigations revealed that the average particle size is 50 nm for these powders. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.</p>10aElectron microscopy10apowders : chemical preparation10aX-ray methods1 aAnilkumar, Mettu1 aPasricha, R.1 aRavi, V.  uhttps://library.ncl.res.in/content/synthesis-bismuth-oxide-nanoparticles-citrate-gel-method-001277nas a2200217   4500008004100000022001400041245005600055210005600111260010600167300001200273490000700285520055300292653001300845653002300858653002400881653001100905653002200916100002100938700001300959856008700972       2005                        eng d  a0025-540800aSynthesis of nanocrystalline Mn3O4 at 100 degrees C0 aSynthesis of nanocrystalline Mn3O4 at 100 degrees C  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAPR  a605-6090 v403 a<p>A simple gel to crystal conversion route has been followed for the preparation of nanocrystalline tetragonal Mn3O4 powders at 80-100 degrees C under refluxing conditions. Freshly prepared manganese hydroxide gel is allowed to crystallize under refluxing and stirring conditions for 4-6 h. Formation of nano crystallites of Mn3O4 is confirmed by X-ray diffraction (XRD) study. Transmission electron microscope (TEM) investigations revealed that the average particle size is 50 nm for these powders. (c) 2005 Elsevier Ltd. All rights reserved.</p>10aCeramics10aChemical synthesis10aElectron microscopy10aOxides10aX-ray diffraction1 aAnilkumar, Mettu1 aRavi, V.  uhttps://library.ncl.res.in/content/synthesis-nanocrystalline-mn3o4-100-degrees-c-0