scholarly journals Graphene-enhanced metal oxide gas sensors at room temperature: a review

2018 ◽  
Vol 9 ◽  
pp. 2832-2844 ◽  
Author(s):  
Dongjin Sun ◽  
Yifan Luo ◽  
Marc Debliquy ◽  
Chao Zhang
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Room Temperature ◽  
Gas Sensing ◽  
Metal Oxide Semiconductors ◽  
Oxide Semiconductors ◽  
Sensing Material ◽  
Metal Oxide Gas Sensors ◽  
Low Sensitivity ◽  
Sensing Performance

Owing to the excellent sensitivity to gases, metal-oxide semiconductors (MOS) are widely used as materials for gas sensing. Usually, MOS gas sensors have some common shortages, such as relatively poor selectivity and high operating temperature. Graphene has drawn much attention as a gas sensing material in recent years because it can even work at room temperature, which reduces power consumption. However, the low sensitivity and long recovery time of the graphene-based sensors limit its further development. The combination of metal-oxide semiconductors and graphene may significantly improve the sensing performance, especially the selectivity and response/recovery rate at room temperature. In this review, we have summarized the latest progress of graphene/metal-oxide gas sensors for the detection of NO2, NH3, CO and some volatile organic compounds (VOCs) at room temperature. Meanwhile, the sensing performance and sensing mechanism of the sensors are discussed. The improved experimental schemes are raised and the critical research directions of graphene/metal-oxide sensors in the future are proposed.

Progress of Research on Preparation of Micro Gas Sensors of Metal Oxide Semiconductors

2011 ◽  
Vol 143-144 ◽  
pp. 562-566 ◽  
Author(s):  
Wen An ◽  
Chun Ying Yang
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Sol Gel ◽  
Dip Coating ◽  
Metal Oxide Semiconductors ◽  
Preparation Technique ◽  
Fabrication Technique ◽  
Oxide Semiconductors ◽  
Existing Problems

New progress of research on the preparation technique of micro gas sensors of metal oxide semiconductors is introduced, such as the chemical treatment of the gas sensing film, the deposited technique of gas sensing film in the oxygen radical assisted EB evaporation, the technique of the multilayered film, the fabrication technique of the thermally oxidized, the technique of the electrode configuration, the fabrication technique of the miniaturized arrays by micro-molding in capillaries, the dip-coating of the sol-gel. And their features will be analyzed respectively, and their existing problems and future development directions will be given.

scholarly journals Room-temperature ppb-level trimethylamine gas sensors functionalized with citric acid-doped polyvinyl acetate nanofibrous mats

2021 ◽  
Author(s):  
Aditya Rianjanu ◽  
Rizky Aflaha ◽  
Nur Istiqomah Khamidy ◽  
Mitra Djamal ◽  
Kuwat Triyana ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Citric Acid ◽  
Metal Oxide ◽  
Chemical Reaction ◽  
Gas Sensors ◽  
Room Temperature ◽  
Polyvinyl Acetate ◽  
Metal Oxide Semiconductors ◽  
Oxide Semiconductors ◽  
Gas Molecules

Conventional chemoresistive gas sensors based on inorganic metal oxide semiconductors work typically at an elevated temperature (200 – 500 °C) to facilitate the chemical reaction between the target gas molecules...

Green light-driven enhanced ammonia sensing at room temperature based on seed-mediated growth of gold-ferrosoferric oxide dumbbell-like heteronanostructures

Nanoscale ◽  
2020 ◽  
Vol 12 (36) ◽  
pp. 18815-18825
Author(s):  
Sujing Yu ◽  
Dongzhi Zhang ◽  
Yu Zhang ◽  
Wenjing Pan ◽  
Benjamin Edem Meteku ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Noble Metals ◽  
Room Temperature ◽  
Green Light ◽  
Metal Oxide Semiconductors ◽  
Oxide Semiconductors ◽  
Ammonia Sensing ◽  
Seed Mediated

Since there is excellent synergy between heterostructures and noble metals, the introduction of noble metals into metal oxide semiconductors has substantially improved the performance of gas sensors.

Recent advances and perspectives on constructing metal oxide semiconductor gas sensing materials for efficient formaldehyde detection

2020 ◽  
Vol 8 (38) ◽  
pp. 13169-13188
Author(s):  
Zejun Han ◽  
Yuan Qi ◽  
Zhengyi Yang ◽  
Hecheng Han ◽  
Yanyan Jiang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensing ◽  
Metal Oxide Semiconductor ◽  
Detection Performance ◽  
Metal Oxide Semiconductors ◽  
Oxide Semiconductor ◽  
Oxide Semiconductors ◽  
Effective Strategies ◽  
Recent Advances

The sensing mechanisms and effective strategies for enhancing the formaldehyde detection performance of metal oxide semiconductors have been reviewed.

Emerging 2D hybrid nanomaterials: towards enhanced sensitive and selective conductometric gas sensors at room temperature

2020 ◽  
Vol 8 (38) ◽  
pp. 13108-13126
Author(s):  
Hanie Hashtroudi ◽  
Ian D. R. Mackinnon ◽  
Mahnaz Shafiei
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Gas Sensing ◽  
Hybrid Nanomaterials ◽  
Sensing Performance

Gas sensing performance of conductometric devices based on 2D hybrid nanomaterials operating at room temperature.

Gas sensing mechanisms of metal oxide semiconductors: a focus review

Nanoscale ◽  
2019 ◽  
Vol 11 (47) ◽  
pp. 22664-22684 ◽  
Author(s):  
Haocheng Ji ◽  
Wen Zeng ◽  
Yanqiong Li
Keyword(s):  
Metal Oxide ◽  
Gas Sensing ◽  
Metal Oxide Semiconductors ◽  
Oxide Semiconductors ◽  
Relationship Of

This review organizes and introduces several common gas sensing mechanisms of metal oxide semiconductors in detail and classifies them into two categories. The scope and relationship of these mechanisms are clarified.

scholarly journals H2 Sensing Properties of Metal Oxide Semiconductors as Varistor-Type Gas Sensors

1997 ◽  
Vol 117 (11) ◽  
pp. 560-564 ◽  
Author(s):  
Yasuhiro Shimizu ◽  
Eiichi Kanazawa ◽  
Yuji Takao ◽  
Makoto Egashira
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Metal Oxide Semiconductors ◽  
Oxide Semiconductors ◽  
Sensing Properties
Sign in / Sign up

Export Citation Format

Share Document