A high performance methanol gas sensor based on palladium-platinum-In2O3 composited nanocrystalline SnO2

Li, Yuxiu; Deng, Dongyang; Xing, Xinxin; Chen, Nan; Liu, Xu; Xiao, Xuechun; Wang, Yude

doi:10.1016/j.snb.2016.06.088

Cited by 72 publications

(22 citation statements)

References 53 publications

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“…These reactions lead to the resistance variation of the gas sensor. Generally, the n-type oxide semiconductor materials (such as ZnO) response mechanism involves the interaction between the detected gases and chemisorbed oxygen ions on the surface of the materials, leading to the resistance change of the sensor [ 44 , 45 ]. In air, the oxygen molecules adsorb on the surface of the materials, which can capture free electrons from the materials to form negative oxygen ions (O 2− , O − and O 2 − ) at grain boundaries, and a thick space charge layer will be formed.…”

Section: Resultsmentioning

confidence: 99%

Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In ₂ O ₃ sensitization

Li¹,

Na²,

Geng³

et al. 2018

R. Soc. open sci.

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For the first time, ordered mesoporous ZnO nanoparticles have been synthesized by a template method. The electroplating after chemical plating method was creatively used to form copper film on the surface of the prepared ZnO, and then a CuO film-decorated ordered porous ZnO composite (CuO/ZnO) was obtained by a high-temperature oxidation method. In2O3 was loaded into the prepared CuO film–ZnO by an ultrasonic-assisted method to sensitize the room temperature gas-sensing performance of the prepared CuO/ZnO materials. The doped In2O3 could effectively improve the gas-sensing properties of the prepared materials to nitrogen oxides (NOx) at room temperature. The 1% In2O3 doped CuO/ZnO sample (1 wt% In2O3–CuO/ZnO) showed the best gas-sensing properties whose response to 100 ppm NOx reached 82%, and the detectable minimum concentration reached 1 ppm at room temperature. The prepared materials had a good selectivity, better response, very low detection limit, and high sensitivity to NOx gas at room temperature, which would have a great development space in the gas sensor field and a great research value.

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Section: Resultsmentioning

confidence: 99%

Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In ₂ O ₃ sensitization

Li¹,

Na²,

Geng³

et al. 2018

R. Soc. open sci.

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“…To date, both organic and inorganic materials have been used in the fabrication of sensors. The category of inorganic materials includes semiconductor metal oxides, metals, oxide compounds, and composites [ 70 , 71 , 72 ]. In the other category, polymers are the most used organic materials in the field of sensors [ 73 ].…”

Section: Sensitive Materials Used In Gas Detectionmentioning

confidence: 99%

ZnO Metal Oxide Semiconductor in Surface Acoustic Wave Sensors: A Review

Constantinoiu

Viespe

2020

Sensors

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Surface acoustic wave (SAW) gas sensors are of continuous development interest to researchers due to their sensitivity, short detection time, and reliability. Among the most used materials to achieve the sensitive film of SAW sensors are metal oxide semiconductors, which are highlighted by thermal and chemical stability, by the presence on their surface of free electrons and also by the possibility of being used in different morphologies. For different types of gases, certain metal oxide semiconductors are used, and ZnO is an important representative for this category of materials in the field of sensors. Having a great potential for the development of SAW sensors, the discussion related to the development of the sensitivity of metal oxide semiconductors, especially ZnO, by the synthesis method or by obtaining new materials, is suitable and necessary to have an overview of the latest results in this domain.

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“…when a gaseous hydrocarbon leaks takes place and it migrates to the environment; this would require an immediate detection procedure of hydrocarbon vapors in order to take the respectively actions to control any catastrophic accident. This section extensively reviews the recent development of porous ceramic gas sensor materials for hydrocarbon gas leaks including LPG [64,65], CH 4 [66][67][68], H 2 [69][70][71], ethanol [29,[84][85][86][87][88], methanol [89][90][91][92], and associated gases such as NO 2 [41,[73][74][75][76][77], H 2 S [78][79][80][81][82][83], and CO [72]. Basically, the discussion will be focused on the specific overlapped section between three interesting areas such as (1) porous ceramic materials, (2) hydrocarbon gas leaks detection, and (3) sensor materials giving the opportunity to explore the interesting niche area for sensing hydrocarbons and their associated gases leaks by porous ceramic materials.…”

Section: Porous Ceramic Materials (Micro-and Nano-materials) For Sensmentioning

confidence: 99%

“…; and (3) the porous zinc oxide (ZnO) that has been used to sensing ethanol, acetone, NO 2 , H 2 S, etc. On the other hand, the catalyst elements mostly used as doping materials in order to improve the sensing properties of the porous ceramics are palladium (Pd) [65,66,85], gold (Au) [77], tungsten (W) [76,95], vanadium (V) [71], cerium (Ce) [90], platinum (Pt) [69], and/or combinations thereof [70,76,91]. The Pd could be used to explain the principle of operation of these doping elements which is based on the fact that Pd is a catalytic metal that dissociates the ambient gas to ions.…”

Section: Porous Ceramic Materials (Micro-and Nano-materials) For Sensmentioning

confidence: 99%

Porous Ceramic Sensors: Hydrocarbon Gas Leaks Detection

Perera-Mercado¹,

León²,

Piñerez³

2018

Recent Advances in Porous Ceramics

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According to the American National Standards Institute (ANSI), a sensor is a device which provides a usable output in response to a specified measurement of a physical quantity converted into a signal suitable for processing (e.g., optical, electrical, or mechanical signals). On the other hand, porous ceramic materials play an important role as sensor materials, because by selecting a suitable base ceramic material for the intended use and then adjusting their overall porosity, pore size distribution, and pore shape, they can cover different applications such as liquid-gas filters, insulators, catalytic supports, mixed of gases separators and sensors, among others. In addition, they have controlled permeability, high melting point, high superficial area, high corrosion and wear resistance, low expansion coefficient, tailored electronic properties, etc. Currently, a few niche areas demand sensors for compact electronic device design, e.g., leak inspections for oil and gas dispositive, flammable and/or toxic gas detection in waste storage areas and confined spaces, hydrocarbons and their associated gas detection at low temperatures and high humidity conditions, among others. In this chapter, the advances in porous ceramic production for hydrocarbons and associated gas detection will be presented and discussed.

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A high performance methanol gas sensor based on palladium-platinum-In2O3 composited nanocrystalline SnO2

Cited by 72 publications

References 53 publications

Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In ₂ O ₃ sensitization

Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In ₂ O ₃ sensitization

ZnO Metal Oxide Semiconductor in Surface Acoustic Wave Sensors: A Review

Porous Ceramic Sensors: Hydrocarbon Gas Leaks Detection

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A high performance methanol gas sensor based on palladium-platinum-In2O3 composited nanocrystalline SnO2

Cited by 72 publications

References 53 publications

Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In 2 O 3 sensitization

Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In 2 O 3 sensitization

ZnO Metal Oxide Semiconductor in Surface Acoustic Wave Sensors: A Review

Porous Ceramic Sensors: Hydrocarbon Gas Leaks Detection

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Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In ₂ O ₃ sensitization

Study on room temperature gas-sensing performance of CuO film-decorated ordered porous ZnO composite by In ₂ O ₃ sensitization