Nanoscale SnO2 Hollow Spheres and Their Application as a Gas-Sensing Material

被引：185

作者：

Gyger, Fabian ^{[1
]}

Huebner, Michael ^{[2
]}

Feldmann, Claus ^{[1
]}

Barsan, Nicolae ^{[2
]}

Weimar, Udo ^{[2
]}

机构：

[1] Karlsruhe Inst Technol, Inst Anorgan Chem, D-76131 Karlsruhe, Germany

[2] Univ Tubingen, Inst Phys & Theoret Chem, D-72076 Tubingen, Germany

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 16期

关键词：

MICROEMULSION APPROACH; TIN DIOXIDE; PHASE-TRANSITIONS; LATTICE-DYNAMICS; RUTILE STRUCTURE; METAL DIOXIDES; HIGH-PRESSURE; SENSORS; OXIDE; DIAMOND;

D O I：

10.1021/cm1011235

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The use of nanoscale SnO2 hollow spheres as a redox-active sensor is investigated. The underlying hollow spheres are prepared via a microemulsion approach and exhibit an outer diameter of about 15-25 nm, a highly crystalline shell with a thickness of 3-5 nm and an inner cavity of 10-20 nm in diameter. Subsequent to materials characterization based on SEM, STEM, TEM, IR, TG, BET, and XRD the applicability of as-prepared hollow spheres as highly porous layers in sensor operation is tested. Accordingly, SnO2 hollow spheres deposited on common sensor substrates show a good response to CO in a concentration range of 50 to 300 ppm. Moreover, the material turned out to be useful as a model system to study the conduction model of a porous layer with small grains.

引用

页码：4821 / 4827

页数：7

共 31 条

[1] [Anonymous], 2008, HDB CHEM PHYS
[2] Carbon onions as nanoscopic pressure cells for diamond formation
Banhart, F
Ajayan, PM
[J]. NATURE, 1996, 382 (6590) : 433 - 435
[3] Conduction model of metal oxide gas sensors
Barsan, N
Weimar, U
[J]. JOURNAL OF ELECTROCERAMICS, 2001, 7 (03) : 143 - 167
[4] High performance gas sensing of CO:: Comparative tests for semiconducting (SnO2-based) and for amperometric gas sensors
Bârsan, N
Stetter, JR
Findlay, M
Göpel, W
[J]. ANALYTICAL CHEMISTRY, 1999, 71 (13) : 2512 - 2517
[5] Structural studies of rutile-type metal dioxides
Bolzan, AA
Fong, C
Kennedy, BJ
Howard, CJ
[J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 1997, 53 : 373 - 380
[6] Microemulsion approach to non-agglomerated and crystalline nanomaterials
Buchold, Daniel H. M.
Feldmann, Claus
[J]. ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (07) : 1002 - 1011
[7] Nanoscale γ-AIO(OH) hollow spheres:: Synthesis and container-type functionality
Buchold, Daniel H. M.
Feldmann, Claus
[J]. NANO LETTERS, 2007, 7 (11) : 3489 - 3492
[8] Synthesis of nanoscale Co3[Co(CN)6]2 in reverse microemulsions
Buchold, Daniel H. M.
Feldmann, Claus
[J]. CHEMISTRY OF MATERIALS, 2007, 19 (14) : 3376 - 3380
[9] Design and synthesis of nanostructured porous SnO2 with high surface areas and their optical and dielectric properties
Chandra, Debraj
Mukherjee, Nillohit
Mondal, Anup
Bhaumik, Asim
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (23) : 8668 - 8674
[10] FRESENIUS J, 1998, ANAL CHEM, V361, P110

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