Pt-decorated Phosphorene as a Propitious Room Temperature VOCs Gas Sensor for Sensitive and Selective Detection of Alcohols

2021 ◽  
Author(s):  
Aref Aasi ◽  
Sadegh Mehdi Aghaei ◽  
Balaji Panchapakesan
Keyword(s):  
Volatile Organic Compounds ◽  
Gas Sensor ◽  
Organic Compounds ◽  
Gas Sensors ◽  
Room Temperature ◽  
Selective Detection ◽  
Two Dimensional ◽  
Black Phosphorene ◽  
Volatile Organic ◽  
Gas Molecules

Inspired by prior advancements and the growing utilization of two-dimensional (2D) based gas sensors, this work presents the potential of black phosphorene for sensing volatile organic compounds (VOCs) gas molecules....

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.

scholarly journals Fast and selective detection of volatile organic compounds using a novel pseudo spin-ladder compound CaCu2O3

2020 ◽  
Vol 1 (7) ◽  
pp. 2368-2379
Author(s):  
N. Lavanya ◽  
G. Veerapandi ◽  
S. G. Leonardi ◽  
N. Donato ◽  
G. Neri ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Volatile Organic Compounds ◽  
Gas Sensor ◽  
Organic Compounds ◽  
Spin Ladder ◽  
Selective Detection ◽  
Volatile Organic ◽  
First Time

A novel pseudo spin-ladder CaCu2O3 compound (2-leg) based conductometric gas sensor has been proposed, for the first time, for the detection of volatile organic compounds (VOCs); (a) the proposed reaction mechanism in air, and (b) in the presence of acetone and ethanol.

Polyaniline nanofibers based gas sensor for detection of volatile organic compounds at room temperature

2019 ◽  
Vol 6 (11) ◽  
pp. 1150d3
Author(s):  
Rajesh Kashyap ◽  
Ravi Kumar ◽  
Mukesh Kumar ◽  
Sachin Tyagi ◽  
Dinesh Kumar
Keyword(s):  
Volatile Organic Compounds ◽  
Gas Sensor ◽  
Organic Compounds ◽  
Room Temperature ◽  
Polyaniline Nanofibers ◽  
Volatile Organic

scholarly journals Superior gas-sensing performance of amorphous CdO nanoflake arrays prepared at room temperature

2016 ◽  
Vol 4 (22) ◽  
pp. 8700-8706 ◽  
Author(s):  
Ye-Qing Zhang ◽  
Zhe Li ◽  
Tao Ling ◽  
Sergei A. Kulinich ◽  
Xi-Wen Du
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Room Temperature ◽  
Gas Sensing ◽  
Fast Response ◽  
Selective Detection ◽  
Safety Requirements ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Sensing Performance

Highly sensitive and selective detection of volatile organic compounds (VOCs) with fast response time is imperative based on safety requirements, yet often remains a challenge.

scholarly journals Snowflake-Shaped ZnO Nanostructures-Based Gas Sensor for Sensitive Detection of Volatile Organic Compounds

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Tianli Han ◽  
Xuexue Li ◽  
Xiaoman Zhang ◽  
Jinyun Liu ◽  
Jinjin Li
Keyword(s):  
Volatile Organic Compounds ◽  
Gas Sensor ◽  
Organic Compounds ◽  
Diethyl Ether ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Gas Diffusion ◽  
Sensitive Detection ◽  
Desorption Kinetics ◽  
Volatile Organic

Volatile organic compounds (VOCs) have been considered severe risks to human health. Gas sensors for the sensitive detection of VOCs are highly required. However, the preparation of gas-sensing materials with a high gas diffusion performance remains a great challenge. Here, through a simple hydrothermal method accompanied with a subsequent thermal treatment, a special porous snowflake-shaped ZnO nanostructure was presented for sensitive detection of VOCs including diethyl ether, methylbenzene, and ethanol. The fabricated gas sensors exhibit a good sensing performance including high responses to VOCs and a short response/recovery time. The responses of the ZnO-based gas sensor to 100 ppm ethanol, methylbenzene, and diethyl ether are about 27, 21, and 11, respectively, while the response times to diethyl ether and methylbenzene are less than 10 seconds. The gas adsorption-desorption kinetics is also investigated, which shows that the gas-sensing behaviors to different target gases are remarkably different, making it possible for target recognition in practical applications.

Sign in / Sign up

Export Citation Format

Share Document