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

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.

First-principles calculations combined with experiments to study the gas-sensing performance of Zn-substituted SnS

2020 ◽  
Vol 22 (31) ◽  
pp. 17513-17522
Author(s):  
Yuxiang Qin ◽  
Peilun Qiu ◽  
Yinan Bai
Keyword(s):  
First Principles ◽  
Gas Sensing ◽  
Group Iv ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Dimensional Group ◽  
Sensing Applications ◽  
Sensing Performance

Two-dimensional group-IV monochalcogenides MX (M = Ge, and Sn; X = S, and Se) are explored for theirpotential in gas-sensing applications.

scholarly journals Two-Dimensional Nanomaterials for Gas Sensing Applications: The Role of Theoretical Calculations

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 851 ◽  
Author(s):  
Yamei Zeng ◽  
Shiwei Lin ◽  
Ding Gu ◽  
Xiaogan Li
Keyword(s):  
Electric Fields ◽  
Gas Sensing ◽  
Theoretical Calculations ◽  
High Surface ◽  
Volume Ratio ◽  
Two Dimensional ◽  
Sensing Properties ◽  
Sensing Applications ◽  
Gas Sensing Properties ◽  
2D Nanomaterials

Two-dimensional (2D) nanomaterials have attracted a large amount of attention regarding gas sensing applications, because of their high surface-to-volume ratio and unique chemical or physical gas adsorption capabilities. As an important research method, theoretical calculations have been massively applied in predicting the potentially excellent gas sensing properties of these 2D nanomaterials. In this review, we discuss the contributions of theoretical calculations in the study of the gas sensing properties of 2D nanomaterials. Firstly, we elaborate on the gas sensing mechanisms of 2D layered nanomaterials, such as the traditional charge transfer mechanism, and a standard for distinguishing between physical and chemical adsorption, from the perspective of theoretical calculations. Then, we describe how to conduct a theoretical analysis to explain or predict the gas sensing properties of 2D nanomaterials. Thirdly, we discuss three important methods that have been applied in order to improve the gas sensing properties, that is, defect functionalization (vacancy, edge, grain boundary, and doping), heterojunctions, and electric fields. Among these strategies, theoretical calculations play a very important role in explaining the mechanisms underlying the enhanced gas sensing properties. Finally, we summarize both the advantages and limitations of the theoretical calculations, and present perspectives for further research on the 2D nanomaterials-based gas sensors.

scholarly journals Nitrogen-Containing Gas Sensing Properties of 2-D Ti2N and Its Derivative Nanosheets: Electronic Structures Insight

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2459
Author(s):  
Hongni Zhang ◽  
Wenzheng Du ◽  
Jianjun Zhang ◽  
Rajeev Ahuja and Zhao Qian
Keyword(s):  
Density Functional ◽  
Gas Adsorption ◽  
Gas Sensing ◽  
Density Functional Theory Calculations ◽  
Fast Response ◽  
Two Dimensional ◽  
Sensing Applications ◽  
Sensing Material ◽  
Physical Insight ◽  
The Stability

In this work, the potentials of two-dimensional Ti2N and its derivative nanosheets Ti2NT2(T=O, F, OH) for some harmful nitrogen-containing gas (NCG) adsorption and sensing applications have been unveiled based on the quantum-mechanical Density Functional Theory calculations. It is found that the interactions between pure Ti2N and NCGs (including NO, NO2, and NH3 in this study) are very strong, in which NO and NO2 can even be dissociated, and this would poison the substrate of Ti2N monolayer and affect the stability of the sensing material. For the monolayer of Ti2NT2(T=O, F, OH) that is terminated by functional groups on surface, the adsorption energies of NCGs are greatly reduced, and a large amount of charges are transferred to the functional group, which is beneficial to the reversibility of the sensing material. The significant changes in work function imply the good sensitivity of the above mentioned materials. In addition, the fast response time further consolidates the prospect of two-dimensional Ti2NT2 as efficient NCGs’ sensing materials. This theoretical study would supply physical insight into the NCGs’ sensing mechanism of Ti2N based nanosheets and help experimentalists to design better 2-D materials for gas adsorption or sensing applications.

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.

Effect of Grain Size on Strain in a Copper Oxide Nanofilm for Gas Sensing Applications

2019 ◽  
Vol 11 (5) ◽  
pp. 05040-1-05040-4
Author(s):  
Sumanta Kumar Tripathy ◽  
◽  
Sanjay Kumar ◽  
Divya Aparna Narava ◽  
◽  
...  
Keyword(s):  
Grain Size ◽  
Copper Oxide ◽  
Gas Sensing ◽  
Sensing Applications
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