Electrochemical Oxidation of Methane in Nonaqueous Electrolytes at Room Temperature: Application to Gas Sensors

1985 ◽  
Vol 132 (12) ◽  
pp. 2951-2957 ◽  
Author(s):  
Takaaki Otagawa ◽  
Solomon Zaromb ◽  
Joseph R. Stetter
Keyword(s):  
Electrochemical Oxidation ◽  
Gas Sensors ◽  
Room Temperature ◽  
Nonaqueous Electrolytes ◽  
Oxidation Of Methane ◽  
Temperature Application

Dioxygen splitting at room temperature over distant binuclear transition metal centers in zeolites for direct oxidation of methane to methanol

2021 ◽  
Author(s):  
Kinga Mlekodaj ◽  
Mariia Lemishka ◽  
Stepan Sklenak ◽  
Jiri Dedecek ◽  
Edyta Tabor
Keyword(s):  
Transition Metal ◽  
Room Temperature ◽  
Direct Oxidation ◽  
Metal Centers ◽  
Oxidation Of Methane ◽  
First Time

Here we demonstrate for the first time the splitting of dioxygen at RT over distant binuclear transition metal (M = Ni, Mn, and Co) centers stabilized in ferrierite zeolite. Cleaved...

Ultraviolet light-emitting diode-assisted highly sensitive room temperature NO2 gas sensor for low-temperature solution-processed ZnO/TiO2 nanorods decorated with plasmonic Au nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Soon-Hwan Kwon ◽  
Tae-Hyeon Kim ◽  
Sang-Min Kim ◽  
Semi Oh ◽  
Kyoung-Kook Kim
Keyword(s):  
Gas Sensors ◽  
High Performance ◽  
Room Temperature ◽  
Au Nanoparticles ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
No2 Gas Sensor ◽  
Highly Sensitive ◽  
Temperature Solution ◽  
Semiconducting Metal Oxides

Nanostructured semiconducting metal oxides such as SnO2, ZnO, TiO2, and CuO have been widely used to fabricate high performance gas sensors. To improve the sensitivity and stability of gas sensors,...

scholarly journals Gas Sensors Based on Mechanically Exfoliated MoS2 Nanosheets for Room-Temperature NO2 Detection

Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 2123 ◽  
Author(s):  
Wenli Li ◽  
Yong Zhang ◽  
Xia Long ◽  
Juexian Cao ◽  
Xin Xin ◽  
...  
Keyword(s):  
Gas Sensors ◽  
High Performance ◽  
Density Functional ◽  
Room Temperature ◽  
Mos2 Nanosheets ◽  
Mechanical Exfoliation ◽  
High Responsivity ◽  
Recovery Behavior ◽  
No2 Gas Sensors ◽  
No2 Detection

The unique properties of MoS2 nanosheets make them a promising candidate for high-performance room temperature gas detection. Herein, few-layer MoS2 nanosheets (FLMN) prepared via mechanical exfoliation are coated on a substrate with interdigital electrodes for room-temperature NO2 detection. Interestingly, compared with other NO2 gas sensors based on MoS2, FLMN gas sensors exhibit high responsivity for room-temperature NO2 detection, and NO2 is easily desorbed from the sensor surface with an ultrafast recovery behavior, with recovery times around 2 s. The high responsivity is related to the fact that the adsorbed NO2 can affect the electron states within the entire material, which is attributed to the very small thickness of the MoS2 nanosheets. First-principles calculations were carried out based on the density functional theory (DFT) to verify that the ultrafast recovery behavior arises from the weak van der Waals binding between NO2 and the MoS2 surface. Our work suggests that FLMN prepared via mechanical exfoliation have a great potential for fabricating high-performance NO2 gas sensors.

Nanostructured Materials for Room-Temperature Gas Sensors

2015 ◽  
Vol 28 (5) ◽  
pp. 795-831 ◽  
Author(s):  
Jun Zhang ◽  
Xianghong Liu ◽  
Giovanni Neri ◽  
Nicola Pinna
Keyword(s):  
Nanostructured Materials ◽  
Gas Sensors ◽  
Room Temperature

Effects of surface electric field on SnO 2 room temperature gas sensors fabricated on nanospike substrates

2012 ◽  
Author(s):  
Haizhou Ren ◽  
Pengtao Wang ◽  
Haibin Huo ◽  
Mengyan Shen ◽  
Marina Ruths ◽  
...  
Keyword(s):  
Electric Field ◽  
Gas Sensors ◽  
Room Temperature ◽  
Surface Electric Field

Ba x Sr 1 − x TiO 3 Thin Films for Tunable Microwave Devices in Cryogenic and Room Temperature Application

2008 ◽  
Vol 367 (1) ◽  
pp. 170-178 ◽  
Author(s):  
P. M. Suherman ◽  
H. T. Su ◽  
T. J. Jackson ◽  
F. Huang ◽  
M. J. Lancaster
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Microwave Devices ◽  
Tunable Microwave ◽  
Temperature Application

scholarly journals Silver Enhances Hematite Nanoparticles Based Ethanol Sensor Response and Selectivity at Room Temperature

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 440
Author(s):  
Daniel Garcia-Osorio ◽  
Pilar Hidalgo-Falla ◽  
Henrique E. M. Peres ◽  
Josue M. Gonçalves ◽  
Koiti Araki ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Sensors ◽  
Room Temperature ◽  
Gas Sensing ◽  
Ethanol Vapor ◽  
Oxide Semiconductor ◽  
Charge Carrier Density ◽  
Ethanol Sensor ◽  
Volatile Organic

Gas sensors are fundamental for continuous online monitoring of volatile organic compounds. Gas sensors based on semiconductor materials have demonstrated to be highly competitive, but are generally made of expensive materials and operate at high temperatures, which are drawbacks of these technologies. Herein is described a novel ethanol sensor for room temperature (25 °C) measurements based on hematite (α‑Fe2O3)/silver nanoparticles. The AgNPs were shown to increase the oxide semiconductor charge carrier density, but especially to enhance the ethanol adsorption rate boosting the selectivity and sensitivity, thus allowing quantification of ethanol vapor in 2–35 mg L−1 range with an excellent linear relationship. In addition, the α-Fe2O3/Ag 3.0 wt% nanocomposite is cheap, and easy to make and process, imparting high perspectives for real applications in breath analyzers and/or sensors in food and beverage industries. This work contributes to the advance of gas sensing at ambient temperature as a competitive alternative for quantification of conventional volatile organic compounds.

MXene/WS2 2D/2D hybrid films for visible-light-activated NO2 sensing at room temperature

2021 ◽  
Author(s):  
Yi Xia ◽  
Sufang He ◽  
Mingjun Wang ◽  
Liexing Zhou ◽  
Jing Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Gas Sensors ◽  
Room Temperature ◽  
2D Materials ◽  
Two Dimensional ◽  
Hybrid Films

OPTOELECTRONIC GAS SENSORS BASED ON TWO-DIMENSIONAL (2D) MATERIALS ARE TOUTED AS POTENTIAL CANDIDATES FOR NO2 SENSING AT ROOM TEMPERATURE. HOWEVER, MOST OF THE DEVELOPED OPTOELECTRONIC SENSORS TO DATE ARE CONFINED...

scholarly journals A tunable volatile organic compound sensor by using PtOx/GQDs/TiO2 nanocomposite thin films at room temperature under visible-light activation

RSC Advances ◽  
2017 ◽  
Vol 7 (63) ◽  
pp. 39859-39868 ◽  
Author(s):  
Shaofeng Shao ◽  
Yunyun Chen ◽  
Shenbei Huang ◽  
Fan Jiang ◽  
Yunfei Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Visible Light ◽  
Gas Sensors ◽  
Room Temperature ◽  
Light Activation ◽  
Nanocomposite Thin Film ◽  
Nanocomposite Thin Films ◽  
Volatile Organic ◽  
Visible Light Activation

Pt/GQDs/TiO2 nanocomposite thin film-based gas sensors show tunable VOC sensing behaviour at room temperature under visible-light activation.

Sign in / Sign up

Export Citation Format

Share Document