We report here the synthesis of tin disulfide nanotubes by a vapour liquid solid growth using bismuth, a low melting metal, as a catalyst. The reaction was carried out in a single step process by heating SnS2 and bismuth in a horizontal tube furnace at 800oC. TEM analysis allowed proposing a plausible mechanism for the formation of SnS2 nanotubes. Pure material could be obtained by optimizing the reaction based on a product analysis using powder X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) combined with energy dispersive X-ray spectroscopy (EDX).
Thermoelectric nanoparticles of the nominal composition Zn4Sb3 are prepared by heating Sb nanoparticles with a 9-fold excess of Zn particles (synthesized by reaction of SbCl3 or ZnCl2 with Li[Et3BH] in THF at room temperature, and about 65°C, respectively) in trioctylamine at about 300°C for 225 min. Two crystalline phases, ZnSb and Zn 1+δ Sb, phase segregated from the nano-Zn4Sb3 precursor that is obtained in the primary reaction from activated Zn and Sb nanoparticles exist in all samples. Electron diffraction tomography of single-crystalline nanoparticles shows that ZnSb crystallizes in the space group Pbca. The new Zn1+δSb phase crystallizes with a hexagonal pseudosymmetry in the triclinic space group P1 and exhibits strict relations with both Zn 13 and ZnSb. -(BIRKEL, C. S.; MUGNAIOLI, E.; GORELIK, T.; KOLB*, U.; PANTHOEFER, M.; TREMEL, W.; J. Am. Chem. Soc. 132 (2010) 28, 9881-9889,
Zinc Zinc I 1700 Solution Mediated Synthesis and Structure of the First Anionic Bis-(hexaborato)-Zincate Prepared in the Presence of an Organic Amine. -Title compound (III) crystallizes in the triclinic space group P1 with Z = 1 (single crystal XRD) and contains cyclic B6O7(OH)6 units connected through a Zn atom. The anionic Zn-bis-hexaborato units are connected by strong hydrogen bonds to form herringbone-like chains and the protonated amine molecules are located between the chains. -(NATARAJAN*, S.; KLEIN, W.; PANTHOEFER, M.; VAN WUELLEN, L.; JANSEN*, M.; Z. Anorg. Allg. Chem. 629 (2003) 6, 959-962; MPI Festkoerperforsch., D-70569 Stuttgart, Germany; Eng.) -Schramke 32-020
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