Raspberry-like SnO 2 hollow nanostructure as a high response sensing material of gas sensor toward n-butanol gas

2018 ◽  
Vol 120 ◽  
pp. 173-182 ◽  
Author(s):  
Rongjun Zhao ◽  
Zhezhe Wang ◽  
Yue Yang ◽  
Xinxin Xing ◽  
Tong Zou ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Response ◽  
Sensing Material ◽  
Hollow Nanostructure

scholarly journals The Adsorption and Sensing Performances of Ir-modified MoS2 Monolayer toward SF6 Decomposition Products: A DFT Study

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 100
Author(s):  
Hongcheng Liu ◽  
Feipeng Wang ◽  
Kelin Hu ◽  
Tao Li ◽  
Yuyang Yan ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Density Functional ◽  
Gas Adsorption ◽  
Dft Method ◽  
Orbital Theory ◽  
Gas Sensitivity ◽  
Decomposition Products ◽  
Mos2 Monolayer ◽  
Characteristic Decomposition ◽  
Sensing Material

In this paper, the Ir-modified MoS2 monolayer is suggested as a novel gas sensor alternative for detecting the characteristic decomposition products of SF6, including H2S, SO2, and SOF2. The corresponding adsorption properties and sensing behaviors were systematically studied using the density functional theory (DFT) method. The theoretical calculation indicates that Ir modification can enhance the surface activity and improve the conductivity of the intrinsic MoS2. The physical structure formation, the density of states (DOS), deformation charge density (DCD), molecular orbital theory analysis, and work function (WF) were used to reveal the gas adsorption and sensing mechanism. These analyses demonstrated that the Ir-modified MoS2 monolayer used as sensing material displays high sensitivity to the target gases, especially for H2S gas. The gas sensitivity order and the recovery time of the sensing material to decomposition products were reasonably predicted. This contribution indicates the theoretical possibility of developing Ir-modified MoS2 as a gas sensor to detect characteristic decomposition gases of SF6.

scholarly journals Flexible nitrogen dioxide gas sensor based on reduced graphene oxide sensing material using silver nanowire electrode

2020 ◽  
Vol 69 (5) ◽  
pp. 058101
Author(s):  
Chuang Li ◽  
Wei-Wei Li ◽  
Li Cai ◽  
Dan Xie ◽  
Bao-Jun Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nitrogen Dioxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Silver Nanowire ◽  
Sensing Material ◽  
Reduced Graphene

Hollow NiFe2O4 hexagonal biyramids for high-performance n-propanol sensing at low temperature

2018 ◽  
Vol 42 (17) ◽  
pp. 14071-14074 ◽  
Author(s):  
Xue-Zhi Song ◽  
Yu-Lan Meng ◽  
Xi Chen ◽  
Kai-Ming Sun ◽  
Xiao-Feng Wang
Keyword(s):  
Low Temperature ◽  
Gas Sensor ◽  
High Performance ◽  
High Response ◽  
Cyclic Stability

A gas sensor based on hollow NiFe2O4 hexagonal biyramids exhibits high performances, including high response value, good selectivity and cyclic stability towards n-propanol while operating at low temperature.

A Novel Tungsten Trioxide Based Gas Sensor for Indoor Formaldehyde Detection

2021 ◽  
Vol 16 (3) ◽  
pp. 363-367
Author(s):  
Gaoqi Zhang ◽  
Fan Zhang ◽  
Kaifang Wang ◽  
Tao Tian ◽  
Shanyu Liu ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Gas Sensor ◽  
Indoor Air ◽  
Gas Sensing ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sensing Material ◽  
Transmission Electron ◽  
Gas Sensing Properties ◽  
Gas Response

Accurate and real-time detection of formaldehyde (HCHO) in indoor air is urgently needed for human health. In this work, a ceramic material (WO3·H2O) with unique structure was successfully prepared using an efficient hydrothermal method. The crystallinity, morphology and microstructure of the as-prepared sensing material were analyzed by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) as well as transmission electron microscope (TEM). The characterization results suggest that the as-prepared sample is composed of square-like nanoplates with uneven surface. Formaldehyde vapor is utilized as the target gas to investigate gas sensing properties of the synthesized novel nanoplates. The testing results indicate that the as-fabricated gas sensor exhibit high gas response and excellent repeatability to HCHO gas. The response value (Ra/Rg) is 24.5 towards 70 ppm HCHO gas at 350 °C. Besides, the gas sensing mechanism was described.

scholarly journals A stable and highly sensitive room-temperature liquefied petroleum gas sensor based on nano-cubes/cuboids of zinc antimonate

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 20349-20357 ◽  
Author(s):  
Satyendra Singh ◽  
Archana Singh ◽  
Ajendra Singh ◽  
Poonam Tandon
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Liquefied Petroleum Gas ◽  
Sensing Material ◽  
Highly Sensitive ◽  
Lpg Sensing

A new direction was explored using nanostructured zinc antimonate as a stable and highly sensitive LPG sensing material.

Ethanol gas sensor based on a self-supporting hierarchical SnO2 nanorods array

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1800-1804 ◽  
Author(s):  
Qian Liu ◽  
Zhenyu Zhang ◽  
Wenyao Li ◽  
Kaibing Xu ◽  
Rujia Zou ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Response ◽  
Sno2 Nanorods ◽  
Solvothermal Route ◽  
Nanorods Array ◽  
One Step

3D hierarchical SnO2 nanorods array on homogeneous substrate was prepared by a one-step solvothermal route, which exhibited a high response to ethanol gas.

A low temperature operating gas sensor with high response to NO2 based on ordered mesoporous Ni-doped In2O3

2016 ◽  
Vol 40 (3) ◽  
pp. 2376-2382 ◽  
Author(s):  
Qiuyue Yang ◽  
Xiaobiao Cui ◽  
Jiangyang Liu ◽  
Jing Zhao ◽  
Yinglin Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Gas Sensor ◽  
High Response ◽  
Ordered Mesoporous ◽  
Temperature Operating

This study demonstrated that doping Ni enhanced the response of the sensor based on mesoporous In2O3 to NO2.

scholarly journals Hydrothermal synthesis of p-type nanocrystalline NiO nanoplates for high response and low concentration hydrogen gas sensor application

2018 ◽  
Vol 44 (13) ◽  
pp. 15721-15729 ◽  
Author(s):  
Umesh T. Nakate ◽  
Gun Hee Lee ◽  
Rafiq Ahmad ◽  
Pramila Patil ◽  
Dhanaji P. Bhopate ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Gas Sensor ◽  
Hydrogen Gas ◽  
High Response ◽  
Low Concentration ◽  
Sensor Application ◽  
P Type

scholarly journals A Hydrogen Gas Sensor Based on TiO2 Nanoparticles on Alumina Substrate

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2483 ◽  
Author(s):  
Siti Mohd Chachuli ◽  
Mohd Hamidon ◽  
Md. Mamat ◽  
Mehmet Ertugrul ◽  
Nor Abdullah
Keyword(s):  
Tio2 Nanoparticles ◽  
Gas Sensor ◽  
Operating Temperature ◽  
Hydrogen Gas ◽  
Optimum Operating ◽  
Optimum Operating Temperature ◽  
X Ray ◽  
Semiconductor Gas Sensor ◽  
Sensing Material ◽  
P Type

High demand of semiconductor gas sensor works at low operating temperature to as low as 100 °C has led to the fabrication of gas sensor based on TiO2 nanoparticles. A sensing film of gas sensor was prepared by mixing the sensing material, TiO2 (P25) and glass powder, and B2O3 with organic binder. The sensing film was annealed at temperature of 500 °C in 30 min. The morphological and structural properties of the sensing film were characterized by field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The gas sensor was exposed to hydrogen with concentration of 100–1000 ppm and was tested at different operating temperatures which are 100 °C, 200 °C, and 300 °C to find the optimum operating temperature for producing the highest sensitivity. The gas sensor exhibited p-type conductivity based on decreased current when exposed to hydrogen. The gas sensor showed capability in sensing low concentration of hydrogen to as low as 100 ppm at 100 °C.

Sign in / Sign up

Export Citation Format

Share Document