ABSTRACT
Bismuth ammonium citrate complex (C24H20Bi4O28 x 6NH3 x 10H2O) interacted with sodium sulphide (Na2S) in presence of beta-cyclodextrin (beta-CD) yielding Bi2S3 nanospheres. Solvothermal treatment of the bismuth complex and dimethyl sulphoxide (DMSO) produced Bi2S3 nanorods. Reaction conditions were optimized to investigate the morphology evolution of the product. Electrical properties of the nanorods were monitored in details.
Subject(s)
Bismuth/chemistry , Electric Conductivity , Nanostructures/chemistry , Nanotubes/chemistry , Sulfides/chemistry , Sulfides/chemical synthesis , Cyclodextrins/chemistry , Dimethyl Sulfoxide/chemistry , Hot Temperature , Materials Testing , Microscopy, Electron, Scanning , Microscopy, Electron, Transmission , Nanostructures/ultrastructure , Nanotubes/ultrastructure , Organometallic Compounds/chemistry , Particle Size , Solvents/chemistry , X-Ray DiffractionABSTRACT
Recrystallization of elemental selenium (Se) from aqueous solution in presence of sodium sulphite (Na2SO3) and sodium sulphide (Na2S) acting as complexing agents has resulted in the formation of nano and microstructures of Se having five different morphological modifications. (1) An aqueous solution of sodium selenosulphate (Na2SO3Se) obtained by dissolving Se in Na2SO3 under refluxing condition yields hemispherical microcrystals. (2) The filtrate of the above reaction mixture on aging produces hexagonal prismatic microrods of Se. Addition of Na2SO3Se solution to formalin (HCHO) at room temperature and refluxing conditions generates (3) Se nanorods, and (4) spherical microcrystals, respectively. (5) Recrystallization of Se from aqueous solution of Na2S develops flower shaped microcrystals.
Subject(s)
Crystallization/methods , Nanostructures/chemistry , Nanostructures/ultrastructure , Nanotechnology/methods , Selenium/chemistry , Water/chemistry , Complex Mixtures/chemistry , Macromolecular Substances , Materials Testing , Molecular Conformation , Nanostructures/analysis , Particle Size , Solutions , Surface PropertiesABSTRACT
A simple solution phase approach is described to prepare tellurium nanorods which undergo morphological modifications to yield different microstructures under varied experimental conditions. The morphology of the prepared products is drastically altered in presence of a few oxidizing agents such as sodium oxychloride (NaOCl), hydrogen peroxide (H2O2) etc. The effects of poly (sodium 4-styrene sulphonate) (PSS) and Isooctyl phenoxy poly oxyethanol (TritonX-100) on the size and shape of the products in presence of air/NaOCl have also been monitored.
