Two-dimensional layered nanomaterials for gas-sensing applications

2016 ◽  
Vol 3 (4) ◽  
pp. 433-451 ◽  
Author(s):  
Wei Yang ◽  
Lin Gan ◽  
Huiqiao Li ◽  
Tianyou Zhai
Keyword(s):  
Gas Sensors ◽  
Critical Review ◽  
Gas Sensing ◽  
Black Phosphorus ◽  
Two Dimensional ◽  
Sensing Applications

In this critical review, we mainly focus on the current developments of gas sensors based on typical 2D layered nanomaterials, including graphene, MoS2, MoSe2, WS2, SnS2, VS2, black phosphorus (BP), h-BN, and g-C3N4.

Recent advances in 2D black phosphorus based materials for gas sensing applications

2021 ◽  
Vol 9 (11) ◽  
pp. 3773-3794
Author(s):  
Aaryashree ◽  
Pratik V. Shinde ◽  
Amitesh Kumar ◽  
Dattatray J. Late ◽  
Chandra Sekhar Rout
Keyword(s):  
Physicochemical Properties ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Black Phosphorus ◽  
Sensing Applications ◽  
Recent Advances ◽  
Sensing Material ◽  
Black Phosphorous

Black phosphorous (BP) has emerged as a potential sensing material due to its exceptional physicochemical properties. The review presents both the theoretical and experimental aspects of the BP-based gas sensors.

scholarly journals Optimization of a Low-Power Chemoresistive Gas Sensor: Predictive Thermal Modelling and Mechanical Failure Analysis

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 783 ◽  
Author(s):  
Andrea Gaiardo ◽  
David Novel ◽  
Elia Scattolo ◽  
Michele Crivellari ◽  
Antonino Picciotto ◽  
...  
Keyword(s):  
Low Power ◽  
Failure Analysis ◽  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Mechanical Failure ◽  
Sensing Applications ◽  
Theoretical Approaches ◽  
Sensing Material ◽  
Silicon Bulk

The substrate plays a key role in chemoresistive gas sensors. It acts as mechanical support for the sensing material, hosts the heating element and, also, aids the sensing material in signal transduction. In recent years, a significant improvement in the substrate production process has been achieved, thanks to the advances in micro- and nanofabrication for micro-electro-mechanical system (MEMS) technologies. In addition, the use of innovative materials and smaller low-power consumption silicon microheaters led to the development of high-performance gas sensors. Various heater layouts were investigated to optimize the temperature distribution on the membrane, and a suspended membrane configuration was exploited to avoid heat loss by conduction through the silicon bulk. However, there is a lack of comprehensive studies focused on predictive models for the optimization of the thermal and mechanical properties of a microheater. In this work, three microheater layouts in three membrane sizes were developed using the microfabrication process. The performance of these devices was evaluated to predict their thermal and mechanical behaviors by using both experimental and theoretical approaches. Finally, a statistical method was employed to cross-correlate the thermal predictive model and the mechanical failure analysis, aiming at microheater design optimization for gas-sensing applications.

scholarly journals Advanced development of metal oxide nanomaterials for H2 gas sensing applications

2021 ◽  
Author(s):  
Yushu Shi ◽  
Huiyan Xu ◽  
Tongyao Liu ◽  
Shah Zeb ◽  
Yong Nie ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
The Past ◽  
Sensing Applications ◽  
The Future ◽  
Metal Oxide Nanomaterials ◽  
Nanomaterials Synthesis ◽  
Advanced Development

The scheme of the structure of this review includes an introduction from the metal oxide nanomaterials’ synthesis to application in H2 gas sensors—a vision from the past to the future.

SnO2 Nano/Microfibers for Gas Sensors

2020 ◽  
Vol 405 ◽  
pp. 324-329
Author(s):  
Erika Mudra ◽  
Ivan Shepa ◽  
Alexandra Kovalcikova ◽  
Ondrej Milkovič ◽  
Jan Dusza
Keyword(s):  
Gas Sensors ◽  
Gas Sensing ◽  
Operating Temperature ◽  
Band Gap Energy ◽  
Calcination Process ◽  
Sensing Applications ◽  
Amorphous Nature ◽  
Coating Method ◽  
Type Semiconductor

SnO2 is an n-type semiconductor with the band gap energy of 3.6 eV. It has been widely studied for gas sensing applications, the sensitivity of which can be easily tuned by the operating temperature. The presented paper is focused on the preparation and detailed characterization of the hollow SnO2 nano/microfibers suitable for gas detection sensors. Ceramic SnO2 fibers were produced by needleless electrospinning and followed by the calcination process. The characterization was performed by SEM, TEM, XRD, and Raman spectroscopy. The precursor PVP/SnO2 fibers had amorphous nature. The calcination of the electro spun precursor resulted in the formation of hollow crystalline fibrous structures. The formation mechanism of hollow fibers has been described. Subsequently, a homogeneous fibrous layer was created by the spin coating method for gas sensing applications.

Gas sensing with heterostructures based on two-dimensional nanostructured materials: a review

2019 ◽  
Vol 7 (43) ◽  
pp. 13367-13383 ◽  
Author(s):  
Atanu Bag ◽  
Nae-Eung Lee
Keyword(s):  
Nanostructured Materials ◽  
Gas Sensing ◽  
Two Dimensional ◽  
Sensing Applications

Advancement, challenges, and prospects in 2D–nD (where n is 0, 1, 2 or 3) heterostructures for gas sensing applications.

Nanomaterial-based gas sensors used for breath diagnosis

2020 ◽  
Vol 8 (16) ◽  
pp. 3231-3248 ◽  
Author(s):  
Xinyuan Zhou ◽  
Zhenjie Xue ◽  
Xiangyu Chen ◽  
Chuanhui Huang ◽  
Wanqiao Bai ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Gas Sensors ◽  
Active Sites ◽  
Gas Sensing ◽  
High Surface ◽  
Volume Ratio ◽  
Sensing Applications ◽  
Enormous Number

Gas-sensing applications commonly use nanomaterials (NMs) because of their unique physicochemical properties, including a high surface-to-volume ratio, enormous number of active sites, controllable morphology, and potential for miniaturisation.

scholarly journals Gas Sensing Properties of Mg-Incorporated Metal–Organic Frameworks

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3323 ◽  
Author(s):  
Jae-Hyoung Lee ◽  
Thanh-Binh Nguyen ◽  
Duy-Khoi Nguyen ◽  
Jae-Hun Kim ◽  
Jin-Young Kim ◽  
...  
Keyword(s):  
Pore Size ◽  
Gas Sensors ◽  
Gas Sensing ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Kinetic Properties ◽  
Sensing Properties ◽  
Sensing Applications ◽  
Gas Sensing Properties ◽  
Metal Organic

The gas sensing properties of two novel series of Mg-incorporated metal–organic frameworks (MOFs), termed Mg-MOFs-I and -II, were assessed. The synthesized iso-reticular type Mg-MOFs exhibited good crystallinity, high thermal stability, needle-shape morphology and high surface area (up to 2900 m2·g−1), which are promising for gas sensing applications. Gas-sensing studies of gas sensors fabricated from Mg-MOFs-II revealed better sensing performance, in terms of the sensor dynamics and sensor response, at an optimal operating temperature of 200 °C. The MOF gas sensor with a larger pore size and volume showed shorter response and recovery times, demonstrating the importance of the pore size and volume on the kinetic properties of MOF-based gas sensors. The gas-sensing results obtained in this study highlight the potential of Mg-MOFs gas sensors for the practical monitoring of toxic gases in a range of environments.

scholarly journals Gas sensors using ordered macroporous oxide nanostructures

2019 ◽  
Vol 1 (5) ◽  
pp. 1626-1639 ◽  
Author(s):  
Zhengfei Dai ◽  
Tingting Liang ◽  
Jong-Heun Lee
Keyword(s):  
Gas Sensors ◽  
Gas Sensing ◽  
Sensing Applications ◽  
Oxide Nanostructures ◽  
Ordered Macroporous

Summary and perspective on gas-sensing applications of ordered macroporous oxide nanostructures have been outlined in this review.

ChemInform Abstract: Two-Dimensional Layered Nanomaterials for Gas-sensing Applications

ChemInform ◽  
2016 ◽  
Vol 47 (26) ◽  
Author(s):  
Wei Yang ◽  
Lin Gan ◽  
Huiqiao Li ◽  
Tianyou Zhai
Keyword(s):  
Gas Sensing ◽  
Two Dimensional ◽  
Sensing Applications

TWO-DIMENSIONAL NANOSHEETS-ASSEMBLED FLOWER-LIKE Co3O4 MICROSPHERES AND THEIR GAS SENSING PERFORMANCES

NANO ◽  
2014 ◽  
Vol 09 (07) ◽  
pp. 1450071 ◽  
Author(s):  
HONGWEI CHE ◽  
AIFENG LIU ◽  
XIAOLIANG ZHANG ◽  
JUNXIAN HOU ◽  
JINGBO MU ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Solvothermal Method ◽  
Three Dimensional ◽  
Hexadecyltrimethylammonium Bromide ◽  
Two Dimensional ◽  
2D Nanosheets ◽  
Co3o4 Microspheres

In this paper, three-dimensional (3D) Co 3 O 4 flower-like microspheres have been successfully synthesized via a facile ethylene glycol (EG)-mediated solvothermal method followed by calcination. The as-prepared flower-like precursors microspheres are formed from the assembly of 2D nanosheets in the presence of hexadecyltrimethylammonium bromide (CTAB). The flower-like architectures of the prepared precursors could be tailored by changing the amount of CTAB. Furthermore, when evaluated as a gas sensor, the obtained Co 3 O 4 flower-like microspheres exhibit a good response and sensitivity toward ethanol gas, suggesting their promising potential for gas sensors application.

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