Xylene sensor based on α-MoO3 nanobelts with fast response and low operating temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18655-18659 ◽  
Author(s):  
Dingsheng Jiang ◽  
Ying Wang ◽  
Wei Wei ◽  
Feng Li ◽  
Yujia Li ◽  
...  
Keyword(s):  
Hydrothermal Treatment ◽  
Treatment Strategy ◽  
Operating Temperature ◽  
Fast Response ◽  
Rapid Response ◽  
Working Temperature

The best condition of the α-MoO3 nanobelts was researched via hydrothermal treatment strategy. α-MoO3 nanobelts showed rapid response and low working temperature to xylene detection.

Xylene gas sensor based on α-MoO3/α-Fe2O3 heterostructure with high response and low operating temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (49) ◽  
pp. 39442-39448 ◽  
Author(s):  
Dingsheng Jiang ◽  
Wei Wei ◽  
Feng Li ◽  
Yujia Li ◽  
Caixia Liu ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Hydrothermal Treatment ◽  
Treatment Strategy ◽  
Operating Temperature ◽  
High Response

α-MoO3 nanobelts covered with α-Fe2O3 were successfully prepared via two steps hydrothermal treatment strategy. α-MoO3/α-Fe2O3 composites showed a high response to xylene at a low operating temperature.

Construction of PdO-decorated double-shell ZnSnO3 hollow microspheres for n-propanol detection at low temperature

2021 ◽  
Author(s):  
Liyong Du ◽  
Dongxue Wang ◽  
Kuikun Gu ◽  
Mingzhe Zhang
Keyword(s):  
Low Temperature ◽  
Rapid Response ◽  
Hollow Microspheres ◽  
Working Temperature ◽  
Response Recovery

The sensor based on 4 wt% PdO-loaded double-shell ZnSnO3 hollow microspheres shows rapid response/recovery speed to n-propanol at low working temperature.

scholarly journals A fast response, self-powered and room temperature near infrared-terahertz photodetector based on a MAPbI3/PEDOT:PSS composite

2020 ◽  
Vol 8 (35) ◽  
pp. 12148-12154 ◽  
Author(s):  
Yifan Li ◽  
Yating Zhang ◽  
Tengteng Li ◽  
Xin Tang ◽  
Mengyao Li ◽  
...  
Keyword(s):  
Response Time ◽  
Room Temperature ◽  
Near Infrared ◽  
Fast Response ◽  
Rapid Response ◽  
Self Powered

A novel self-powered NIR and THz PTE PD based on a (MAPbI3/PEDOT:PSS) composite with a rapid response time of 28 μs.

Effect of Operating Temperature on Characteristics of Single-Walled Carbon Nanotubes Gas Sensor

2005 ◽  
Vol 486-487 ◽  
pp. 485-488 ◽  
Author(s):  
Hong Quang Nguyen ◽  
Mai Van Trinh ◽  
Jeung Soo Huh
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensor ◽  
Gas Adsorption ◽  
Operating Temperature ◽  
High Sensitivity ◽  
Single Walled Carbon Nanotubes ◽  
Fast Response ◽  
Carrier Gas ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The effect of operating temperature on characteristics of single-walled carbon nanotubes (SWNT) based gas sensor was investigated. SWNT-based sensor was fabricated from SWNT powder (Iljin Nanotech, Korea) by screen-printing method. SWNT powder (30 mg, AP grade) was dispersed into 0.78 gram a-terpineol (Aldrich) by ultrasonic vibration for 1 hour then stirred manually for 1 hour to increase adhesion. From this condensed solution, a thick film of SWNT was printed onto alumina substrates. The film then was sintered at 300oC for 2 hours to remove residual impurities. Upon exposure to some gases such as nitrogen, ammonia or nitric oxide, resistance of the sensor dramatically changes due to gas adsorption. In our experiments, SWNT-based sensor was employed to detect NH3 gas in N2 ambience. After saturated of N2, the sensor exposes to NH3 with various concentrations (from 5 ppm to 100 ppm, diluted by N2 as carrier gas). This sensor exhibits a fast response, high sensitivity but slow recovery at room temperature. By heating at high temperature and increasing the flow-rate of carrier gas, NH3 gas desorbs easily and recovery of the sensor improved. The heating also influenced the characteristics of sensors such as response and reproducibility. Other special changes in electric property of SWNT-based sensor caused by heating are also discussed.

Acetone Sensing Properties of NiO Nanofibers Based on Electrospinning

2020 ◽  
Vol 842 ◽  
pp. 231-235
Author(s):  
Xiang Xiang Fan ◽  
Meng Ru Li ◽  
Lan Tian Xie ◽  
Ya Juan Xu ◽  
Wu Ming He ◽  
...  
Keyword(s):  
Operating Temperature ◽  
Diabetic Patients ◽  
Face Centered Cubic ◽  
Optimal Operating ◽  
Working Temperature ◽  
Response Recovery ◽  
Potential Applications ◽  
Response And Recovery ◽  
Face Centered ◽  
P Type

Acetone is a main respiratory marker for diabetic patients. In this paper, P-type NiO nanofibers were prepared by electrospinning and used for the detection of acetone gas. NiO nanofibers were characterized by SEM and XRD. The uniform NiO nanofibers with face-centered cubic structure was obtained. The working temperature of NiO nanofibers was optimized, and the optimal operating temperature is 220°C. The response-recovery curve was tested, and the response and recovery time is 24.6 s and 610 s respectively. The response to different concentrations of acetone was also analyzed, and the detection limit was 100 ppb. These results show that NiO nanofibers based on electrospinning have potential applications in the respiratory testing of diabetes.

scholarly journals A fast response fluorescence probe specific for hypochlorous acid detection and its applications in bioimaging

2018 ◽  
Vol 16 (12) ◽  
pp. 2074-2082 ◽  
Author(s):  
Hongmin Jia ◽  
Shuhe Xia ◽  
Huan Feng ◽  
Qingtao Meng ◽  
Chengchen Duan ◽  
...  
Keyword(s):  
Hypochlorous Acid ◽  
Fluorescence Probe ◽  
High Sensitivity ◽  
Fast Response ◽  
Rapid Response

The features ofDNPH-NA, including its high sensitivity, selectivity, and reliability at physiological pH, together with a rapid response, enable its successful application in the detection of endogenous HOClin vitroandin vivo.

Ag@SnO2 core–shell material for use in fast-response ethanol sensor at room operating temperature

2013 ◽  
Vol 178 ◽  
pp. 185-191 ◽  
Author(s):  
Ren-Jang Wu ◽  
Da-Jun Lin ◽  
Ming-Ru Yu ◽  
Ming Hun Chen ◽  
Hsiao-Fang Lai
Keyword(s):  
Operating Temperature ◽  
Fast Response ◽  
Core Shell ◽  
Shell Material ◽  
Ethanol Sensor

Pd-Loaded In2O3 Hollow Spheres with Enhanced Formaldehyde Sensing at Low Temperature

NANO ◽  
2020 ◽  
pp. 2150006
Author(s):  
Xiaohua Liu ◽  
Hong Wang ◽  
Ruisong Yang ◽  
Di Liu ◽  
Jiawei Wan ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Hollow Spheres ◽  
Hollow Structure ◽  
Average Diameter ◽  
Fast Response ◽  
Test Methods ◽  
Step Method ◽  
Sensing Properties ◽  
Calcination Temperatures ◽  
Working Temperature

The porous Pd-loaded In2O3 hollow spheres were successfully prepared by simple one-step method with the template of carbon spheres. The effect of calcination temperatures on morphology, composition and gas sensing performance of the as-obtained products was discussed by a series of test methods. The sample calcined at 550∘C showed uniform porous hollow spheres with an average diameter of 100[Formula: see text]nm. Gas-sensing results exhibited that the Pd-In2O3 hollow spheres-based sensor possessed excellent sensing properties to formaldehyde, which include high response value (33), low working temperature (180∘C) and fast response and recovery time (12[Formula: see text]s and 22[Formula: see text]s). The enhanced HCHO-sensing properties of Pd-In2O3 composites were attributed to the special porous and hollow structure, abundant oxygen vacancies and the catalysis of palladium. Pd-loaded In2O3 hollow spheres had been proved to be an ideal material for detecting HCHO at a low working temperature.

Influence of the Electrolyte Potential Window on the Electrical Characteristics of Supercapacitors Operating Elevated Temperatures

2020 ◽  
Vol 1012 ◽  
pp. 147-152
Author(s):  
L.S.V. Silva ◽  
G.L. Mansani ◽  
D.S. Yoshikawa ◽  
J.C.S. Casini ◽  
R.N. Faria
Keyword(s):  
Cyclic Voltammetry ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Electrochemical Impedance ◽  
Operating Temperature ◽  
Carbon Electrodes ◽  
Electrical Characteristics ◽  
Working Temperature ◽  
Morphological Evaluation ◽  
Scan Rate

The equivalent series resistances (ESR) and specific capacitances (Cs) of supercapacitors carbon electrodes have been investigated using cyclic voltammetry and electrochemical impedance spectroscopy. Commercial activated carbon electrodes employing organic electrolyte have been tested using a potential window in the range of 2.7–3.8 V. Specific capacitances were calculated from cyclic voltammetry curves at room temperature employing various scan rates (30 and 100mVs-1). Internal series resistances of the supercapacitors were measured using the galvanostatic curves at room temperature and above (25 and 50°C). The ESR increase to 9.8 Ω at 25° and 2.7V to 78.8 Ω at with operating temperature raise and also with overpotential. A compositional and morphological evaluation of these electrodes showed a very homogeneous structure. It has been shown that the specific capacitance decreased considerably with scan rate, current density, electrochemical potential window and working temperature.

Production Stainless Gravitational Heat Pipes Filled with Distilled Water

2016 ◽  
Vol 832 ◽  
pp. 184-191 ◽  
Author(s):  
Marián Jobb ◽  
Ľuboš Kosa ◽  
Michal Holubčík ◽  
Radovan Nosek
Keyword(s):  
Heat Pipe ◽  
Operating Temperature ◽  
Heat Pipes ◽  
Distilled Water ◽  
Aisi 304 ◽  
Working Temperature ◽  
Essential Function ◽  
Aisi 316 ◽  
Process Measurements ◽  
Pipe Manufacturing

This article deals with the performance of heat pipes, depending on the operating temperature and positions (operation angle). There is described the essential function of the heat pipe manufacturing process. Measurements were carried at an operating temperature of 40 °C to 90 °C. Stainless heat pipes were made of three kinds of materials AISI 304, AISI 310, AISI 316 and filled with a distilled water, up to 20% of the heat pipe inner volume. For each material was selected heat pipe with the best results. The heat pipes were measured at various angles of vertical inclination (0 ° - 90 °), at the working temperature 90 ° C. The performance was measured on the experimental device. Presented results show the progress of individual measurements and the effect of operating parameters on the performance of heat pipes.

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