Results 221 to 230 of about 88,532 (259)
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Portable sensors for hydrogen analysis
Russian Journal of General Chemistry, 2007Presently available methods for the determination of hydrogen in the gas phase are analyzed. Various procedures for the detection of hydrogen both at pre-explosion and at very low (less than 50 ppm) concentrations by means of thermocatalytic, semiconductor, amperometric, and potentiometric electrochemical sensors are considered.
Yu. A. Dobrovol’skii +5 more
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Sensors and Actuators B: Chemical, 1994
A thick-film SnO2-based hydrogen gas sensor has been developed. The fabricated device is found to be very sensitive for hydrogen gas and is capable of detecing hydrogen in the order of a few ppm (⩽100) concentration. The effects of temperature and the amount of catalytic palladium doping in SnO2 towards the hydrogen sensitivity of the sensor have been ...
V.N. Mishra, R.P. Agarwal
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A thick-film SnO2-based hydrogen gas sensor has been developed. The fabricated device is found to be very sensitive for hydrogen gas and is capable of detecing hydrogen in the order of a few ppm (⩽100) concentration. The effects of temperature and the amount of catalytic palladium doping in SnO2 towards the hydrogen sensitivity of the sensor have been ...
V.N. Mishra, R.P. Agarwal
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Palladium nanowire hydrogen sensor
Proceedings of IEEE Sensors 2003 (IEEE Cat. No.03CH37498), 2004Palladium nanowires, synthesized by template-nanomanufacturing techniques, has been studied for hydrogen gas sensing applications at room temperature. In this study parallel arrays of Pd nanowires were fabricated by electrodeposition from an aqueous plating solution onto an HOPG surface.
D. Banerji +2 more
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2019
To keep optimal conditions in the primary cooling circuit of nuclear power plants, various chemical species are dosed in. Among the species the concentration of which is monitored in primary coolant, belong Oxygen and Hydrogen. While a plenty of companies offer oxygen sensors suitable for the measurement in primary coolant, the hydrogen sensor, really ...
Moucha, T. +4 more
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To keep optimal conditions in the primary cooling circuit of nuclear power plants, various chemical species are dosed in. Among the species the concentration of which is monitored in primary coolant, belong Oxygen and Hydrogen. While a plenty of companies offer oxygen sensors suitable for the measurement in primary coolant, the hydrogen sensor, really ...
Moucha, T. +4 more
openaire +1 more source
NANOWIRE-BASED HYDROGEN SENSOR
Chemical & Engineering News Archive, 2001REGINALD M. PENNER HAD a nifty idea: Improve the speed with which a sensor can detect hydrogen gas by using thinner palladium wires than in a conventional H 2 sensor. The response time should be faster, he reasoned, "because hydrogen has to diffuse a much shorter distance in a small wire." The idea panned out, allowing Penner, a chemistry professor at ...
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Applied Physics Letters, 1984
A new type of hydrogen sensor is reported in which an optical fiber is used as the sensing element. The fiber is coated with palladium which expands on exposure to hydrogen. This changes the effective optical path length of the fiber, which is detected by interferometric techniques.
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A new type of hydrogen sensor is reported in which an optical fiber is used as the sensing element. The fiber is coated with palladium which expands on exposure to hydrogen. This changes the effective optical path length of the fiber, which is detected by interferometric techniques.
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Review of Electrochemical Hydrogen Sensors
Chemical Reviews, 2009Ghenadii, Korotcenkov +2 more
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Hybrid Hydrogen Sensor Based on Pd/WO3 Showing Simultaneous Chemiresistive and Gasochromic Response
Nanomaterials, 2023Sanghoon Kim +2 more
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