Gas phase reaction combined light-regulated electrochemical sensing technique for improved response selectivity and sensitivity to hydrocarbons

Yu, Junkan; Deng, Shengwei; Jin, Han; Huang, Minxuan; Wang, Shaopeng; Zhang, Xiaowei

doi:10.1007/s11581-020-03763-7

Cited by 3 publications

(2 citation statements)

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“…The elevated temperature of exhaust gases and exhaust gas content make potentiometric sensors the most appealing option. In the literature, zirconia and platinum are widely employed as electrolyte and reference electrodes, respectively [10][11][12][13][14][15][16][17]. As working electrodes, different oxides, from simple to more complex oxides [12,[17][18][19][20][21] such as spinels and perovskites, are used for the detection of several elements, e.g., hydrocarbons [10,15,[22][23][24][25][26], CO [19,[27][28][29], and NH 3 [30,31].…”

Section: Introductionmentioning

confidence: 99%

“…In the literature, zirconia and platinum are widely employed as electrolyte and reference electrodes, respectively [10][11][12][13][14][15][16][17]. As working electrodes, different oxides, from simple to more complex oxides [12,[17][18][19][20][21] such as spinels and perovskites, are used for the detection of several elements, e.g., hydrocarbons [10,15,[22][23][24][25][26], CO [19,[27][28][29], and NH 3 [30,31]. The general problem is not only the use of expensive noble metals but also poor selectivity to the target gas and/or high cross-sensitivity toward other elements.…”

Section: Introductionmentioning

confidence: 99%

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Potentiometric C2H4-Selective Detection on Solid-State Sensors Activated with Bifunctional Catalytic Nanoparticles

Toldrá‐Reig

Serra

2021

Chemosensors

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This work presents a solid-state ionic-based device to selectively detect C2H4 in car exhaust gases. The sensor consists of 8YSZ as the electrolyte and two electrodes: Fe0.7Cr1.3O3/8YSZ and LSM/8YSZ. The main aim of this work is to optimize the catalytic behavior of the working electrode to C2H4 and reduce cross-sensitivity toward CO and H2O. Several catalyst nanoparticles were infiltrated to tailor C2H4 adsorption and electrochemical oxidation properties while diminishing adsorption and conversion of other gas components such as CO. The infiltrated metal catalysts were selected, taking into account both adsorption and redox properties. Infiltration of Ti or Al, followed by a second infiltration of Ni, enabled the selective detection of C2H4 with low cross-sensitivity toward CO and H2O in a moist gas environment. Further insight into potentiometric C2H4 sensing is achieved by electrochemical impedance analysis of the electrodes activated with bifunctional catalysts.

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