Hierarchical nanostructured WO3–SnO2 for selective sensing of volatile organic compounds

Nanoscale ◽  
2015 ◽  
Vol 7 (29) ◽  
pp. 12460-12473 ◽  
Author(s):  
Arpan Kumar Nayak ◽  
Ruma Ghosh ◽  
Sumita Santra ◽  
Prasanta Kumar Guha ◽  
Debabrata Pradhan
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mixed Oxide ◽  
Sensing Material ◽  
Volatile Organic ◽  
Sensitivity And Selectivity

WO3–SnO2 mixed oxide is demonstrated to be a suitable sensing material for volatile organic compounds, with much improved sensitivity and selectivity.

scholarly journals Selectivity of Tungsten Oxide Synthesized by Sol-Gel Method Towards Some Volatile Organic Compounds and Gaseous Materials in a Broad Range of Temperatures

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 523 ◽  
Author(s):  
Simonas Ramanavičius ◽  
Milda Petrulevičienė ◽  
Jurga Juodkazytė ◽  
Asta Grigucevičienė ◽  
Arūnas Ramanavičius
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sol Gel ◽  
Temperature Dependent ◽  
Sensing Systems ◽  
Sensing Material ◽  
Operational Temperature ◽  
Volatile Organic ◽  
Different Gases

In this research, the investigation of sensing properties of non-stoichiometric WO3 (WO3−x) film towards some volatile organic compounds (VOC) (namely: Methanol, ethanol, isopropanol, acetone) and ammonia gas are reported. Sensors were tested at several temperatures within the interval ranging from a relatively low temperature of 60 up to 270 °C. Significant variation of selectivity, which depended on the operational temperature of sensor, was observed. Here, the reported WO3/WO3–x-based sensing material opens an avenue for the design of sensors with temperature-dependent sensitivity, which can be applied in the design of new gas- and/or VOC-sensing systems that are dedicated for the determination of particular gas- and/or VOC-based analyte concentration in the mixture of different gases and/or VOCs, using multivariate analysis of variance (MANOVA).

Al-doped GeS nanosheet as a promising sensing material for O-contained volatile organic compounds detection

2020 ◽  
Vol 527 ◽  
pp. 146797 ◽  
Author(s):  
Kaiwen Pu ◽  
Xianying Dai ◽  
Yuyu Bu ◽  
Runqiu Guo ◽  
Wenluo Tao ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sensing Material ◽  
Volatile Organic

Materials Design of Sensing Layers for Detection of Volatile Analytes

2012 ◽  
pp. 183-198
Author(s):  
Mutsumi Kimura ◽  
Tadashi Fukawa ◽  
Tsuyoshi Ikehara ◽  
Takashi Mihara
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Chemical Sensors ◽  
Recent Progress ◽  
Materials Design ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Sensitivity And Selectivity

The authors developed highly sensitive sensing layers for detection of Volatile Organic Compounds (VOCs) by using polymeric nanomaterials. In this chapter, they describe their recent progress on the design of polymeric sensing layers for the chemical sensors. The nanostructures of polymeric sensing layer strongly influenced the sensitivity and selectivity for VOCs sensings.

scholarly journals Bio-Inspired Strategies for Improving the Selectivity and Sensitivity of Artificial Noses: A Review

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1803 ◽  
Author(s):  
Charlotte Hurot ◽  
Natale Scaramozzino ◽  
Arnaud Buhot ◽  
Yanxia Hou
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Broad Spectrum ◽  
High Performance ◽  
Recent Progress ◽  
Performance Criteria ◽  
Public Security ◽  
Volatile Organic ◽  
Sensitivity And Selectivity ◽  
New Applications

Artificial noses are broad-spectrum multisensors dedicated to the detection of volatile organic compounds (VOCs). Despite great recent progress, they still suffer from a lack of sensitivity and selectivity. We will review, in a systemic way, the biomimetic strategies for improving these performance criteria, including the design of sensing materials, their immobilization on the sensing surface, the sampling of VOCs, the choice of a transduction method, and the data processing. This reflection could help address new applications in domains where high-performance artificial noses are required such as public security and safety, environment, industry, or healthcare.

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