Recent Advances in ZnO Based Electrochemical Ethylene Gas Sensors for Evaluation of Fruit Maturity

2021 ◽  
pp. 213-225
Author(s):  
Ribu Mathew ◽  
Avirup Das
Keyword(s):  
Gas Sensors ◽  
Recent Advances ◽  
Fruit Maturity

scholarly journals In(Ga)N Nanostructures and Devices Grown by Molecular Beam Epitaxy and Metal-Assisted Photochemical Etching

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 126
Author(s):  
Abdul Kareem K. Soopy ◽  
Zhaonan Li ◽  
Tianyi Tang ◽  
Jiaqian Sun ◽  
Bo Xu ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Gas Sensors ◽  
Molecular Beam ◽  
Light Emitting Diodes ◽  
Crystal Quality ◽  
Porous Structures ◽  
Light Emitting ◽  
Photochemical Etching ◽  
Recent Advances ◽  
Low Dimensional

This review summarizes the recent research on nitride nanostructures and their applications. We cover recent advances in the synthesis and growth of porous structures and low-dimensional nitride nanostructures via metal-assisted photochemical etching and molecular beam epitaxy. The growth of nitride materials on various substrates, which improves their crystal quality, doping efficiency, and flexibility of tuning performance, is discussed in detail. Furthermore, the recent development of In(Ga)N nanostructure applications (light-emitting diodes, lasers, and gas sensors) is presented. Finally, the challenges and directions in this field are addressed.

Recent advances in graphene based gas sensors

2015 ◽  
Vol 218 ◽  
pp. 160-183 ◽  
Author(s):  
Seba S. Varghese ◽  
Sunil Lonkar ◽  
K.K. Singh ◽  
Sundaram Swaminathan ◽  
Ahmed Abdala
Keyword(s):  
Gas Sensors ◽  
Recent Advances

Recent advances in carbon material-based NO2 gas sensors

2018 ◽  
Vol 255 ◽  
pp. 1788-1804 ◽  
Author(s):  
Sang Won Lee ◽  
Wonseok Lee ◽  
Yoochan Hong ◽  
Gyudo Lee ◽  
Dae Sung Yoon
Keyword(s):  
Gas Sensors ◽  
Carbon Material ◽  
Recent Advances ◽  
No2 Gas Sensors

scholarly journals Recent Advances in Electrochemical Sensors for Detecting Toxic Gases: NO2, SO2 and H2S

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 905 ◽  
Author(s):  
Md Khan ◽  
Mulpuri Rao ◽  
Qiliang Li
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Electrochemical Sensors ◽  
Gas Sensing ◽  
Performance Comparison ◽  
Toxic Gases ◽  
Recent Advances ◽  
Metal Metal ◽  
Sensor Materials ◽  
Sensing Performance

Toxic gases, such as NOx, SOx, H2S and other S-containing gases, cause numerous harmful effects on human health even at very low gas concentrations. Reliable detection of various gases in low concentration is mandatory in the fields such as industrial plants, environmental monitoring, air quality assurance, automotive technologies and so on. In this paper, the recent advances in electrochemical sensors for toxic gas detections were reviewed and summarized with a focus on NO2, SO2 and H2S gas sensors. The recent progress of the detection of each of these toxic gases was categorized by the highly explored sensing materials over the past few decades. The important sensing performance parameters like sensitivity/response, response and recovery times at certain gas concentration and operating temperature for different sensor materials and structures have been summarized and tabulated to provide a thorough performance comparison. A novel metric, sensitivity per ppm/response time ratio has been calculated for each sensor in order to compare the overall sensing performance on the same reference. It is found that hybrid materials-based sensors exhibit the highest average ratio for NO2 gas sensing, whereas GaN and metal-oxide based sensors possess the highest ratio for SO2 and H2S gas sensing, respectively. Recently, significant research efforts have been made exploring new sensor materials, such as graphene and its derivatives, transition metal dichalcogenides (TMDs), GaN, metal-metal oxide nanostructures, solid electrolytes and organic materials to detect the above-mentioned toxic gases. In addition, the contemporary progress in SO2 gas sensors based on zeolite and paper and H2S gas sensors based on colorimetric and metal-organic framework (MOF) structures have also been reviewed. Finally, this work reviewed the recent first principle studies on the interaction between gas molecules and novel promising materials like arsenene, borophene, blue phosphorene, GeSe monolayer and germanene. The goal is to understand the surface interaction mechanism.

Recent advances in 0D nanostructure-functionalized low-dimensional nanomaterials for chemiresistive gas sensors

2020 ◽  
Vol 8 (22) ◽  
pp. 7272-7299 ◽  
Author(s):  
Tingqiang Yang ◽  
Yueli Liu ◽  
Huide Wang ◽  
Yanhong Duo ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Gas Sensing ◽  
Synergistic Effects ◽  
Recent Advances ◽  
Highly Effective ◽  
Low Dimensional ◽  
Chemiresistive Gas Sensors ◽  
Sensing Performance

0D functionalization on 1D or 2D backbones is highly effective to improve gas sensing performance due to synergistic effects.

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