Novel Bifuncitonal One-Dimensional Fe3O4/Se Nanocomposites via Facile Green Synthesis

Autor: Xiuzhen Zhang, Anjian Xie, Yuhua Shen, Wengui Chang, Wensheng Lu
Rok vydání: 2010
Předmět:
Zdroj: The Journal of Physical Chemistry C. 114:4846-4851
ISSN: 1932-7455
1932-7447
DOI: 10.1021/jp911073k
Popis: Novel uniform straw-like Fe3O4/Se one-dimensional (1D) nanoplank bundles have been successfully prepared by a facile and green glucose-reducing method at gentle temperature for the first time. The width, thickness, and length of as-prepared Fe3O4/Se nanoplanks can be observed at the range of 300−400 nm, 50 nm, and 6−8 μm, respectively. Fe3O4 nanoparticles may act as seeds and catalytic agents for the formation of the bifunctional nanocomposites. The products bear both fluorescent and superparamagnetic properties. More importantly, quantum size effect in optical properties, which is reflected by a marked blue shift of the band gap and direct transitions relative to the values of bulk t-Se, can be observed. The mechanism of formation can be described as the linear aggregation and growth of Fe3O4/Se nanospheres and the self-assembly of 1D Fe3O4/Se nanoplanks. The strawlike Fe3O4/Se can be potentially converted to a series of bifunctional nanocomposites (e.g., Fe3O4/Ag2Se, Fe3O4/Bi2Se3, and Fe3O4/CdSe) with s...
Databáze: OpenAIRE