Details

Autor(en) / Beteiligte

• Lei, M.
• Bi, K.
• Zhang, Y.B.
• Huang, K.
• Fu, X.L.
• Wang, X.
• Jia, R.X.
• Yang, H.J.
• Fan, D.Y.
• Wang, Y.G.

Titel

Highly selective growth of TiO2 nanoparticles on one tip of CdS nanowires

Ist Teil von

• Journal of alloys and compounds, 2015-10, Vol.646, p.1004-1008

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We demonstrate a solvothermal route to fabricate one dimensional (1D) TiO2–CdS heterostructures by using TiO2 nanotubes and CdS nanowires as source materials. Amorphous TiO2 nanoparticles are selectively grown at one tip of the CdS nanowires. The difference in chemical reactivity among the various facets, even between the two polar facets is the main reason for the selective growth of TiO2 on tips of the polar nanowires. It is found that S-terminated (000–1) facet is the most reactive one as it can expose S atoms with three dangling bonds. TiO2 is selectively nucleated and grown at the S-terminated tips of the CdS nanowires, resulting in the final TiO2 capped CdS heterostructures.