PREPARATION OF METAL CHALCOGENIDES FROM REACTIONS OF METAL COMPOUNDS AND CHALCOGEN

摘要

A method of preparing metal chalcogenides from elemental metal or metal compounds has the following steps: providing at least one chalcogen; providing at least one element from periodic table groups 13-15; providing at least one elemental metal or metal compound; and combining and heating the chalcogen, the group 13-15 element, and the metal or metal compound at sufficient time and temperature to form a metal chalcogenide. Methods of preparing metal sulfides and polysulfides from metal oxides ; a kit comprising boron and a chalcogen ; a method of preparing ultralong TaS3 nanowires from tantalum metal ; a battery comprising TaS3 ; a method of preparing semiconducting chalcogenide nanoparticles and controlling sizes and morphologies in solution ; methods of : preparing CdSe nanocrystals and controlling their size/preparing CdSe nanocrystals of controlled size ; a method of preparing metal chalcogenide nanocrystals of controlled size ; and a method of functionalizing the surface of semiconducting chalcogenide nanoparticles.