Size-controlled electrochemical synthesis and properties of SnO2 nanotubes

被引：73

作者：

Lai, Min ^{[1
,2
]}

Lim, Jae-Hong ^{[1
]}

Mubeen, Syed ^{[1
]}

Rheem, Youngwoo ^{[1
]}

Mulchandani, Ashok ^{[1
]}

Deshusses, Marc A. ^{[3
]}

Myung, Nosang V. ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

[2] Nanjing Univ Informat Sci & Technol, Sch Math & Phys, Nanjing 210044, Peoples R China

[3] Duke Univ, Dept Civil & Environm Engn, Durham, NC 27708 USA

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 18期

关键词：

METAL-OXIDE NANOWIRE; TIN OXIDE; TRANSPORT-PROPERTIES; THIN-FILMS; TEMPERATURE; NANORODS; SINGLE; ARRAYS; NANORIBBONS; PRECURSOR;

D O I：

10.1088/0957-4484/20/18/185602

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

SnO2 nanotubes with controlled diameter and length were synthesized using an electrochemical method at room temperature. The length and wall thickness of the nanotubes increased monotonically with the deposition time and the diameter of the nanotubes was altered by varying the pore size of the scaffolds. Post-annealing at 400 degrees C in dry air significantly improved the crystallinity while maintaining the nanotube structure. The temperature-dependent photoluminescence spectra indicated an activation energy of 58 meV for emission centered at 410 nm. The temperature-dependent electrical resistance revealed that the dominant electrical conduction mechanism alters from the ionization of the main donor centers to impurity scattering as the temperature decreases. The electrical conductance of 200 nm diameter nanotubes increased to 33 times the original value upon UV illumination at 254 nm.

引用

页数：6

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