A novel ion selective gas sensor based on pulsed atmospheric pressure chemical ionization and ion-ion-recombination

Heptner, Andre; Reinecke, Tobias; Angerstein, Nico; Zimmermann, Stefan

doi:10.1016/j.snb.2017.02.086

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…Otherwise, when L < K , the motion phenomenon of repulsive radial potential energy caused by the eccentric potential energy will occur, so we can draw a conclusion that whether molecules will be captured by the plates depends on the voltage between the plates, which indirectly determines the efficiency of plate ionization. Then, the probability formula of electron tunneling ionization in a strong field [ 13 ] is derived from the Ammosov-Delone-Krainov model, that is, the ionization efficiency formula of gas:

where W a is the gas ionization efficiency, E is the electric field strength, and ξ 1 is the ionization energy required for gas ionization. Because the ionization energy is determined by the type of gas, the gas ionization efficiency is only related to the intensity of the electric field.…”

Section: Methodsmentioning

confidence: 99%

“…Otherwise, when L < K, the motion phenomenon of repulsive radial potential energy caused by the eccentric potential energy will occur, so we can draw a conclusion that whether molecules will be captured by the plates depends on the voltage between the plates, which indirectly determines the efficiency of plate ionization. Then, the probability formula of electron tunneling ionization in a strong field [13] is derived from the Ammosov-Delone-Krainov model, that is, the ionization efficiency formula of gas:…”

Section: Methodsmentioning

confidence: 99%

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Double-UV Photoionizaion Detector with Graphene Oxide-Coated Electrodes

Zhou

Zhang

et al. 2022

Applied Bionics and Biomechanics

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The structure of a photoionization detector was optioned and researched. In order to solve the problem of the photoionization detector’ lamp surface residue interference, a new structure of the self-cleaning double-UV detector was adopted. At the same time, the air flow field of the detector was simulated by the finite element method. Through analyzing the results of the simulation experiment, further optimization of the gas channel for the microdetector was carried out, and the ionization chamber with axial flow structure was finally chosen. The new nanomaterial, graphene oxide was used to modify the surface of the collector plate of detector to improve the gas sensitivity and sensitivity of the photoionization detector. Through the experimental analysis, the performance indexes of detector were described in detail. The minimum detection limit of the detector is 2.5 × 10 − 7 . The linearity response of the detector was analyzed, and the linear correlation coefficient reaches 0.993. The experimental results show that the double-UV detector can improve the overall gas sensing characteristics and provide an ideal detection unit for volatile organic compound (VOC) gas detection.

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Section: Methodsmentioning

confidence: 99%

“…Otherwise, when L < K, the motion phenomenon of repulsive radial potential energy caused by the eccentric potential energy will occur, so we can draw a conclusion that whether molecules will be captured by the plates depends on the voltage between the plates, which indirectly determines the efficiency of plate ionization. Then, the probability formula of electron tunneling ionization in a strong field [13] is derived from the Ammosov-Delone-Krainov model, that is, the ionization efficiency formula of gas:…”

Section: Methodsmentioning

confidence: 99%

Double-UV Photoionizaion Detector with Graphene Oxide-Coated Electrodes

Zhou

Zhang

et al. 2022

Applied Bionics and Biomechanics

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show abstract

“…The current value is proportional to the concentration of charged ions generated between the electrodes. In combination with the separation of the chromatographic column, the qualitative or quantitative detection of the sample compound can be achieved based on the change in the current intensity between the electrodes over time [ 11 ].…”

Section: Methodsmentioning

confidence: 99%

Development of a Novel Micro Photoionization Detector for Rapid Volatile Organic Compounds Measurement

Zhou

Zhang

et al. 2018

Applied Bionics and Biomechanics

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The simulation of the gas flow field and electrostatic field in the photoionization detector by COMSOL was conducted based on principle investigation in the present study. Under the guidance of simulation results, structural optimization was carried out to significantly reduce the dead volume of the ionization chamber, and finally, the relationship between offset voltage and collection efficiency was obtained which led to a remarkable increase in the collection efficiency of charged ions in the photoionization detector. Then an ionization chamber with low interference and fast response was developed. Then experiment was performed with toluene as a VOCs gas under the condition of optimal gas flow rate of 50 ml, UV lamp ionization energy of 10.86 eV. The results showed that the ion collection efficiency reached 91% at a bias voltage of 150 V. Moreover, a preferred linearity of 99.99% was obtained, and a ppb level of LOD can be achieved. The determination results well-fitted the relationship between offset voltage and the response value obtained in the simulation.

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“…The main methods for acetone detection include gas chromatography [12], ion mobility spectrometry [13] and the use of gas sensors [14]. In these methods, the gas sensor method is the most errective because the sensor is easy to operate, small in size and low in cost [15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced performance of an acetone gas sensor based on Ag-LaFeO₃ molecular imprinted polymers and carbon nanotubes composite

Qiu

Wang

et al. 2020

Nanotechnology

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High performance acetone gas sensors were fabricated with molecular imprinted polymers of Ag-LaFeO3 (ALFOMMIPs) and multi walled carbon nanotubes (CNTs) composite using the microwave assisted sol-gel method. The crystalline structure, functional groups, grain size and surface appearance of the synthesized materials were analyzed via different characterization techniques and the gas responses of the samples were examined. The detailed acetone gas sensing tests and analysis revealed that the CNTs and ALFOMIPs nanocomposite (CNT/ALFOMIP) sample possessed a higher response than that of the ALFOMIPs sample. Where 0.75 wt% CNTs were added into the ALFOMIPs (0.75% CNT/ALFOMIP nanocomposite) sensor, an excellent gas sensing performance was exhibited. The response of this sensor was up to 59 for 5 ppm acetone vapors and the response and recovery times were 58 and 33 s at low working temperature of 86 °C, respectively. In addition, it had the best selectivity only to acetone vapors due to the use of the molecular imprinting technique.

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A novel ion selective gas sensor based on pulsed atmospheric pressure chemical ionization and ion-ion-recombination

Cited by 7 publications

References 29 publications

Double-UV Photoionizaion Detector with Graphene Oxide-Coated Electrodes

Double-UV Photoionizaion Detector with Graphene Oxide-Coated Electrodes

Development of a Novel Micro Photoionization Detector for Rapid Volatile Organic Compounds Measurement

Enhanced performance of an acetone gas sensor based on Ag-LaFeO₃ molecular imprinted polymers and carbon nanotubes composite

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A novel ion selective gas sensor based on pulsed atmospheric pressure chemical ionization and ion-ion-recombination

Cited by 7 publications

References 29 publications

Double-UV Photoionizaion Detector with Graphene Oxide-Coated Electrodes

Double-UV Photoionizaion Detector with Graphene Oxide-Coated Electrodes

Development of a Novel Micro Photoionization Detector for Rapid Volatile Organic Compounds Measurement

Enhanced performance of an acetone gas sensor based on Ag-LaFeO3 molecular imprinted polymers and carbon nanotubes composite

Contact Info

Product

Resources

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Enhanced performance of an acetone gas sensor based on Ag-LaFeO₃ molecular imprinted polymers and carbon nanotubes composite