01625nas a2200241   4500008004100000022001400041245009800055210006900153260006900222300001000291490000700301520079500308653002301103653002501126653001401151653001801165100001901183700001901202700001301221700001501234700001801249856011601267       2005                        eng d  a0254-058400aSynthesis of fine PbE (E = S, Se) powder from direct in situ reduction of sulphur or selenium0 aSynthesis of fine PbE E S Se powder from direct in situ reductio  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcSEP  a91-940 v933 a<p>Lead sulphide and lead selenide have been prepared for the first time, by in situ reduction of elemental S or Se by using aqueous DMF or aqueous SFS as reducing agents and their reaction with lead acetate. The grayish-black powder has been characterized by powder XRD measurement, XPS and SEM/EDAX analysis. Powder X-ray diffraction pattern revealed that cubic PbE (E = S, Se) is formed with a little impurities of lead in case of PbSe. Slightly broader peaks in XRD measurement suggest small particles diameter in the powder. The particle size by using Scheffer's formula is found to be about 100 nm. Peaks due to free lead particles are observed in XPS and EDS (in case of PbSe) analysis and SEM analysis indicates agglomerated particles. (c) 2005 Elsevier B.V All rights reserved.</p>10aChemical synthesis10aelectronic materials10areduction10aSemiconductor1 aKhanna, P., K.1 aSubbarao, VVVS1 aWagh, M.1 aJadhav, P.1 aPatil, K., R.  uhttps://library.ncl.res.in/content/synthesis-fine-pbe-e-s-se-powder-direct-situ-reduction-sulphur-or-selenium-0