Shape and composition control of Bi₁₉S₂₇(Br_3-x ,I _x ) alloyed nanowires: the role of metal ions.

ABSTRACT: We present the first colloidal synthesis of highly uniform single-crystalline Bi₁₉S₂₇Br₃ nanowires (NWs) with a mean diameter of ∼9 nm and tunable lengths in the range of 0.15-2 μm in the presence of foreign metal ions (Al³⁺). The Al³⁺ ions not only control the growth of NWs, but also achieve species transformation, i.e., from Bi₂S₃ to Bi₁₉S₂₇Br₃, and are not present in the resulting NWs. This colloidal chemistry approach can be expanded to prepare a family of single-crystalline Bi₁₉S₂₇(Br_3-x ,I _x ) alloyed NWs with controlled compositions (0 ≤ x ≤ 3). Interestingly, these alloyed NWs show an unusual compositio

SUBMITTER: Wu Y 

PROVIDER: S-EPMC5500857 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature