synthesis of single-crystalline potassium-doped tungsten oxide nanosheets as high-sensitive gas...

2007 Tungsten I 5700 Synthesis of Single-Crystalline Potassium-Doped Tungsten Oxide Nanosheets as High-Sensitive Gas Sensors. — Single-crystalline K 0.475 WO 3 nanosheets are synthe- sized by heating a W foil treated with an aqueous solution of KOH, AIBN, and acetone (610 °C, 2 h). The as-grown products are characterized by SEM, EDX, SAED, TEM, and powder XRD. The width of the nanosheets reaches 30 µm and thicknesses of about 80 nm. The as-prepared nanosheets exhibit good stability, high sensitivity, and fast re- sponse times to H 2 S, acetone, and other gases, and may have promising applications as gas sensors. — (ZHANG, B.; LIU*, J.; GUAN, S.; WAN, Y.; ZHANG, Y.; CHEN, R.; J. Alloys Compd. 439 (2007) 1-2, 55-58; Sch. Chem. Eng., Zhengzhou Univ., Zhengzhou, Henan 450002, Peop. Rep. China; Eng.) — W. Pewestorf 34- 022

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Page 1: Synthesis of Single-Crystalline Potassium-Doped Tungsten Oxide Nanosheets as High-Sensitive Gas Sensors

2007

200734.fm Page 22 Monday, July 23, 2007 9:26 AM

TungstenI 5700 Synthesis of Single-Crystalline Potassium-Doped Tungsten Oxide Nanosheets as

High-Sensitive Gas Sensors. — Single-crystalline K0.475WO3 nanosheets are synthe-sized by heating a W foil treated with an aqueous solution of KOH, AIBN, and acetone (610 °C, 2 h). The as-grown products are characterized by SEM, EDX, SAED, TEM, and powder XRD. The width of the nanosheets reaches 30 µm and thicknesses of about 80 nm. The as-prepared nanosheets exhibit good stability, high sensitivity, and fast re-sponse times to H2S, acetone, and other gases, and may have promising applications as gas sensors. — (ZHANG, B.; LIU*, J.; GUAN, S.; WAN, Y.; ZHANG, Y.; CHEN, R.; J. Alloys Compd. 439 (2007) 1-2, 55-58; Sch. Chem. Eng., Zhengzhou Univ., Zhengzhou, Henan 450002, Peop. Rep. China; Eng.) — W. Pewestorf

34- 022

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