Cookie-like Au/NiO nanoparticles with optical gas-sensing properties

被引：131
作者：
Mattei, Giovanni
Mazzoldi, Paolo
Post, Michael L.
Buso, Dario
Guglielmi, Massimo
Martucci, Alessandro
机构：
[1] Univ Padua, Dipartimento Ingn Meccan, Settore Mat, I-35131 Padua, Italy
[2] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
[3] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada
来源：
ADVANCED MATERIALS | 2007年 / 19卷 / 04期
关键词：
D O I：
10.1002/adma.200600930
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Cookie-like Au/NiO nanoparticles are grown inside a porous SiO2 sol-gel film (see figure). High-resolution TEM measurements reveal a twofold structure of the nanoparticles, showing a sharp interface with epitaxial coherence of the two phases. The nanocomposite films show a reversible change in optical absorbance in the vis-NIR wavelength range when exposed to carbon monoxide.
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收藏
页码：561 / +
页数：5
相关论文
共 19 条
[1]   Optical recognition of CO and H-2 by use of gas-sensitive Au-Co3O4 composite films [J].
Ando, M ;
Kobayashi, T ;
Iijima, S ;
Haruta, M .
JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (09) :1779-1783
[2]   Combined effects of small gold particles on the optical gas sensing by transition metal oxide films [J].
Ando, M ;
Kobayashi, T ;
Haruta, M .
CATALYSIS TODAY, 1997, 36 (01) :135-141
[3]   ENHANCEMENT IN THE OPTICAL CO SENSITIVITY OF NIO FILM BY THE DEPOSITION OF ULTRAFINE GOLD PARTICLES [J].
ANDO, M ;
KOBAYASHI, T ;
HARUTA, M .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1994, 90 (07) :1011-1013
[4]   Influence of post-implantation thermal and laser annealing on the stability of metal-alloy nanoclusters in silica [J].
Battaglin, G ;
Cattaruzza, E ;
Fernandez, CD ;
De Marchi, G ;
Gonella, F ;
Mattei, G ;
Maurizio, C ;
Mazzoldi, P ;
Miotello, A ;
Sada, C ;
D'Acapito, F .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2001, 175 :410-416
[5]   Au and NiO nanocrystals doped into porous sol-gel SiO2 films and the effect on optical CO detection [J].
Buso, D. ;
Guglielmi, M. ;
Martucci, A. ;
Mattei, G. ;
Mazzoldi, P. ;
Sada, C. ;
Post, M. L. .
NANOTECHNOLOGY, 2006, 17 (10) :2429-2433
[6]  
Caruso F, 2001, ADV MATER, V13, P11, DOI 10.1002/1521-4095(200101)13:1<11::AID-ADMA11>3.0.CO
[7]  
2-N
[8]   The influences of preparation parameters on NiO thin film properties for gas-sensing application [J].
Hotovy, I ;
Huran, J ;
Siciliano, P ;
Capone, S ;
Spiess, L ;
Rehacek, V .
SENSORS AND ACTUATORS B-CHEMICAL, 2001, 78 (1-3) :126-132
[9]   Controlled synthesis of hyperbranched inorganic nanocrystals with rich three-dimensional structures [J].
Kanaras, AG ;
Sönnichsen, C ;
Liu, HT ;
Alivisatos, AP .
NANO LETTERS, 2005, 5 (11) :2164-2167
[10]   ENHANCING EFFECT OF GOLD DEPOSITION IN THE OPTICAL-DETECTION OF REDUCING GASES IN AIR BY METAL-OXIDE THIN-FILMS [J].
KOBAYASHI, T ;
HARUTA, M ;
ANDO, M .
SENSORS AND ACTUATORS B-CHEMICAL, 1993, 14 (1-3) :545-546
12