Synergistic Effects of a Combination of Cr2O3-Functionalization and UV-Irradiation Techniques on the Ethanol Gas Sensing Performance of ZnO Nanorod Gas Sensors

2016 ◽  
Vol 8 (4) ◽  
pp. 2805-2811 ◽  
Author(s):  
Sunghoon Park ◽  
Gun-Joo Sun ◽  
Changhyun Jin ◽  
Hyoun Woo Kim ◽  
Sangmin Lee ◽  
...  
Keyword(s):  
Uv Irradiation ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Synergistic Effects ◽  
Zno Nanorod ◽  
Sensing Performance

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.

scholarly journals Nanostructured SmFeO3 Gas Sensors: Investigation of the Gas Sensing Performance Reproducibility for Colorectal Cancer Screening

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5910
Author(s):  
Andrea Gaiardo ◽  
Giulia Zonta ◽  
Sandro Gherardi ◽  
Cesare Malagù ◽  
Barbara Fabbri ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Gas Sensors ◽  
Process Development ◽  
Gas Sensing ◽  
Diagnostic Tools ◽  
Fecal Samples ◽  
Recovery Times ◽  
Medical Diagnostic ◽  
Response And Recovery ◽  
Sensing Performance

Among the various chemoresistive gas sensing properties studied so far, the sensing response reproducibility, i.e., the capability to reproduce a device with the same sensing performance, has been poorly investigated. However, the reproducibility of the gas sensing performance is of fundamental importance for the employment of these devices in on-field applications, and to demonstrate the reliability of the process development. This sensor property became crucial for the preparation of medical diagnostic tools, in which the use of specific chemoresistive gas sensors along with a dedicated algorithm can be used for screening diseases. In this work, the reproducibility of SmFeO3 perovskite-based gas sensors has been investigated. A set of four SmFeO3 devices, obtained from the same screen-printing deposition, have been tested in laboratory with both controlled concentrations of CO and biological fecal samples. The fecal samples tested were employed in the clinical validation protocol of a prototype for non-invasive colorectal cancer prescreening. Sensors showed a high reproducibility degree, with an error lower than 2% of the response value for the test with CO and lower than 6% for fecal samples. Finally, the reproducibility of the SmFeO3 sensor response and recovery times for fecal samples was also evaluated.

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.

Enhanced ethanol gas sensing performance of the networked Pd, In2O3-codecorated ZnO nanorod sensor

2017 ◽  
Vol 71 (8) ◽  
pp. 494-499 ◽  
Author(s):  
Sangmin Lee ◽  
Gun-Joo Sun ◽  
Jae Kyung Lee ◽  
Soong Keun Hyun ◽  
Chongmu Lee
Keyword(s):  
Gas Sensing ◽  
Zno Nanorod ◽  
Sensing Performance

Enhancement of SO2 gas sensing performance using ZnO nanorod thin films: the role of deposition time

2016 ◽  
Vol 52 (8) ◽  
pp. 4543-4554 ◽  
Author(s):  
Brian Yuliarto ◽  
Muhammad Fazri Ramadhani ◽  
Nugraha ◽  
Ni Luh Wulan Septiani ◽  
Kholoud Ahmed Hamam
Keyword(s):  
Thin Films ◽  
Deposition Time ◽  
Gas Sensing ◽  
Zno Nanorod ◽  
So2 Gas ◽  
Sensing Performance

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.

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