Research Article

Nano Research

, Volume 1, Issue 5, pp 403-411

Open Access This content is freely available online to anyone, anywhere at any time.

Preparation of monodisperse Se colloid spheres and Se nanowires using Na2SeSO3 as precursor

  • Liping LiuAffiliated withDepartment of Chemistry, Tsinghua University
  • , Qing PengAffiliated withDepartment of Chemistry, Tsinghua University
  • , Yadong LiAffiliated withDepartment of Chemistry, Tsinghua University Email author 

Abstract

Nearly monodisperse spherical amorphous Se colloids are prepared by the dismutation of Na2SeSO3 solution at room temperature; by altering the pH of the solution, amorphous Se colloid spheres with sizes of about 120 nm, 200 nm, 300 nm, and 1 µm can be obtained. Se@Ag2Se core/shell spheres are successfully synthesized by using the obtained amorphous Se (a-Se) spheres as templates, indicating the potential applications of these Se nanomaterials in serving as soft templates for other selenides. Meanwhile, selenium nanowires are obtained through a “solid-solution-solid” growth process by dispersing the prepared Se spheres in ethanol. This simple and environmentally benign approach may offer more opportunities in the synthesis and applications of nanocrystal materials.

http://static-content.springer.com/image/art%3A10.1007%2Fs12274-008-8040-5/MediaObjects/12274_2008_8040_Fig1_HTML.jpg

Keywords

Na2SeSO3 dismutation amorphous Se (a-Se) spheres trigonal Se (t-Se) nanowires