One-Dimensional V2O5/TiO2 Heterostructures for Chemiresistive Ozone Sensors

被引：48
作者：
Avansi, Waldir, Jr. [1 ]
Catto, Ariadne C. [1 ]
da Silva, Luis F. [1 ]
Fiorido, Tomas [2 ]
Bernardini, Sandrine [2 ]
Mastelaro, Valmor R. [3 ]
Aguir, Khalifa [2 ]
Arenal, Raul [4 ,5 ,6 ]
机构：
[1] Univ Fed Sao Carlos, UFSCar, Dept Phys, Lab Nanostruct Multifunct Mat, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Toulon & Var, Aix Marseille Univ, CNRS, IM2NP, F-13013 Marseille, France
[3] Univ Sao Paulo, BR-13566590 Sao Carlos, SP, Brazil
[4] Univ Zaragoza, Inst Nanosci Aragon, Lab Microscopias Avanzadas, Zaragoza 50018, Spain
[5] ARAID, Zaragoza 50018, Spain
[6] Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, E-50009 Zaragoza, Spain
来源：
ACS APPLIED NANO MATERIALS | 2019年 / 2卷 / 08期
基金：
巴西圣保罗研究基金会;
关键词：
O-3; sensor; V2O5/TiO2; heterostructures; hydrothermal method; chemiresistors; GAS SENSORS; THIN-FILMS; SNO2; NANOSTRUCTURES; GROWTH; HETEROJUNCTIONS; ASSOCIATION;
D O I：
10.1021/acsanm.9b00578
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Over the last decades, there has been considerable interest in the synthesis of one-dimensional (1D) metal oxide nanostructures that can be used in gas sensor devices. Heterostructures, obtained by a combination of different semiconductor nanomaterials with different band energies, have been extensively studied in order to enhance their gas-sensing performance. In this context, our present study focuses on the investigation of chemiresistive-sensing capabilities of a combination of TiO2 nanoparticles and V2O5 nanowires obtained via hydrothermal treatment of the peroxometal complex. The formation of V2O5/TiO2 heterostructures was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) measurements. This study also proposes an efficient approach to produce 1D V2O5/TiO2 heterostructures with a good range of detection (0.09-1.25 ppm) and remarkable ozone-sensing properties related to repeatability and selectivity.
引用
收藏
页码：4756 / 4764
页数：17
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