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

Abstract

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.

A Strategy for Studying Environmental Engineering: Simple Hydrothermal Synthesis of Flower-Shaped Stannous Sulfide Nanomaterials for Efficient Cataluminescence Sensing of Diethyl Ether

“…Therefore, the luminescence phenomenon occurs when ether is catalytically oxidized on the surface of SnS. Some reports have suggested that ether forms excited state CH 3 CHO* and CO 2 * molecules during catalytic oxidation and speculate that the products of this are acetaldehyde and carbon dioxide [44,45]. The off-gas produced by catalytic oxidation of ether molecules on the surface of SnS nanomaterials is carbon dioxide [46].…”

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“…The existed standard analytical techniques such as GC/Mass and optical spectroscopies which can be utilized to detect these gases are expensive and time-consuming [4][5][6]. Thus, in the recent years, the development of the novel and efficient gas sensors is a topic of major concern for both experimental and theoretical studies communities [7][8][9][10][11][12].…”

Multipurpose fluorescent carbon dots from papaya seed waste as sensing materials for Cu2+ detection and diethyl ether vapor sensor via electronic nose system

“…fuel, pharmaceutical, and explosive material industries [18,19]. Nonetheless, long-term exposure of diethyl ether in low concentration can cause headache, fatigue, nausea, and other related symptoms in human [20]. Diethyl ether is typically produced by dehydrating ethanol via Barbet process in the presence of acid catalyst [21].…”