High-performance hydrogen sulfide gas sensor based on Pd/Fe2O3–Zr4MnO10: working conditions optimization by response surface methodology

Zhang, Wenjuan; Yang, Fuxiu; Wang, Hong; Gu, Chunxiu; Lu, Yun; Zhou, Kaowen

doi:10.1007/s13738-020-02001-1

Cited by 2 publications

(3 citation statements)

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“…For the loading of nano-Pd/ZnNi 3 Al 2 O 7 , the adjustment of working temperature, the introduction of the measured gas sample, and the recording of CTL signals, one can refer to our previous work. − …”

Section: Methodsmentioning

confidence: 99%

“…CTL, a kind of chemiluminescence (CL) emitted from heterogeneous catalytic oxidation reactions on the gas–solid interface, has been considered as a promising energy transduction mechanism for fabricating gas sensors . In recent years, a series of CTL sensing applications have been attempted to develop for diethyl ether − and many other molecules − at different laboratories. However, a higher working temperature above 200 °C is not conducive to the stability of the sensor signal …”

Section: Introductionmentioning

confidence: 99%

“…The main working conditions for the determination of diethyl ether by the CTL method, such as analytical wavelength, working temperature, and carrier gas flow rate, are not isolated but interact with each other. The response surface method (RSM) is a statistical comprehensive test technique. − ,− It takes the response of the system as a function of many factors and displays the functional relationship by the graphic technology. In this way, we can choose the optimal conditions in the experimental design by intuitive observation.…”

Section: Introductionmentioning

confidence: 99%

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Novel Diethyl Ether Gas Sensor Based on Cataluminescence on Nano-Pd/ZnNi₃Al₂O₇

et al. 2021

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A sensitive diethyl ether gas sensor based on cataluminescence on nano-Pd/ZnNi3Al2O7 at a temperature lower than 150 °C was reported. The composition of the sensitive material was determined by energy-dispersive spectrometry, and a particle size of less than 50 nm was shown by transmission electron microscopy. When the atomic percentage of Pd in the sensing material is 0.8–1.3%, it is beneficial to the low-temperature and high-selective cataluminescence of diethyl ether. The signal response and recovery of diethyl ether on the sensitive material can be completed quickly in 0.5 s, and the relative standard deviation of the signal within 500 h of continuous operation is not more than 2.5%. There is good linear relationship between the luminescence intensity and the concentration of diethyl ether in the range of 0.08–75 mg/m3. The detection limit (3σ) is 0.04 mg/m3. The working conditions optimized by the response surface methodology were an analytical wavelength of 548.86 nm, a reaction temperature of 109.18 °C, and a carrier gas velocity of 125.88 mL/min. The sensitivity of the method can be increased by 4.5% under the optimized working conditions. The optimization method is universal for many multi-parameter processes.

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