Gas Sensing with Nano-Indium Oxides (In2O3) Prepared via Continuous Hydrothermal Flow Synthesis

被引：166

作者：

Elouali, Sofia ^{[1
]}

Bloor, Leanne G. ^{[1
]}

Binions, Russell ^{[1
,2
]}

Parkin, Ivan P. ^{[1
]}

Carmalt, Claire J. ^{[1
]}

Darr, Jawwad A. ^{[1
]}

机构：

[1] UCL, Christopher Ingold Labs, Dept Chem, London WC1H 0AJ, England

[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England

来源：

LANGMUIR | 2012年 / 28卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

FILMS; CRYSTALLINE; IN(OH)(3); METAL; NANOPARTICLES; TEMPERATURE; SENSORS; MODEL; H2S;

D O I：

10.1021/la203565h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A rapid, clean, and continuous hydrothermal route to the synthesis of ca. 14 nm indium oxide (In2O3) nanoparticles using a superheated water flow at 400 degrees C and 24.1 MPa as a crystallizing medium and reagent is described. Powder X-ray diffraction (XRD) of the particles revealed that they were highly crystalline despite their very short time under hydrothermal flow conditions. Gas sensing substrates were prepared from an In2O3 suspension via drop-coating, and their gas sensing properties were tested for response to butane, ethanol, CO, ammonia, and NO2 gases. The sensors showed excellent selectivity toward ethanol, giving a response of 18-20 ppm.

引用

页码：1879 / 1885

页数：7

共 39 条

[1] Conduction model of metal oxide gas sensors [J].

Barsan, N ;

Weimar, U .

JOURNAL OF ELECTROCERAMICS, 2001, 7 (03) :143-167

[2] Aerosol assisted chemical vapor deposition of In2O3 films from Me3In and donor functionalized alcohols [J].

Basharat, Siama ;

Carmalt, Claire J. ;

Barnett, Sarah A. ;

Tocher, Derek A. ;

Davies, Hywel O. .

INORGANIC CHEMISTRY, 2007, 46 (22) :9473-9480

[3] Single-source precursors to gallium and indium oxide thin films [J].

Bloor, Leanne G. ;

Carmalt, Claire J. ;

Pugh, David .

COORDINATION CHEMISTRY REVIEWS, 2011, 255 (11-12) :1293-1318

[4] Direct synthesis of nanosized NiCo2O4 spinel and related compounds via continuous hydrothermal synthesis methods [J].

Boldrin, Paul ;

Hebb, Andrew K. ;

Chaudhry, Aqif A. ;

Otley, Lucy ;

Thiebaut, Benedicte ;

Bishop, Peter ;

Darr, Jawwad A. .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (14) :4830-4838

[5] Instant nano-hydroxyapatite: a continuous and rapid hydrothermal synthesis [J].

Chaudhry, Aqif A. ;

Haque, Saba ;

Kellici, Suela ;

Boldrin, Paul ;

Rehman, Ihtesham ;

Fazal, A. Khalid ;

Darr, Jawwad A. .

CHEMICAL COMMUNICATIONS, 2006, (21) :2286-2288

[6] Synthesis and characterisation of magnesium substituted calcium phosphate bioceramic nanoparticles made via continuous hydrothermal flow synthesis [J].

Chaudhry, Aqif Anwar ;

Goodall, Josie ;

Vickers, Martin ;

Cockcroft, Jeremy Karl ;

Rehman, Ihtesham ;

Knowles, Jonathan Campbell ;

Darr, Jawwad Arshad .

JOURNAL OF MATERIALS CHEMISTRY, 2008, 18 (48) :5900-5908

[7] Ethanol sensor based on indium oxide nanowires prepared by carbothermal reduction reaction [J].

Chu, XF ;

Wang, CH ;

Jiang, DL ;

Zheng, CM .

CHEMICAL PHYSICS LETTERS, 2004, 399 (4-6) :461-464

[8] Indium hydroxide and indium oxide nanospheres, nanoflowers, microcubes, and nanorods: Synthesis and optical properties [J].

Du, Jimin ;

Yang, Mino ;

Cha, Seung Nam ;

Rhen, Danielle ;

Kang, Miwon ;

Kang, Dae Joon .

CRYSTAL GROWTH & DESIGN, 2008, 8 (07) :2312-2317

[9]

FINE GF, 2010, SENSORS, V6, P5468

[10] Metal and metal oxide nanoparticles in chemiresistors: Does the nanoscale matter? [J].

Franke, ME ;

Koplin, TJ ;

Simon, U .

SMALL, 2006, 2 (01) :36-50

← 1 2 3 4 →