Effect of Pr/Zn on the anti-humidity and acetone-sensing properties of Co<sub>3</sub>O<sub>4</sub> prepared by electrospray

Fan, Xiangxiang; Wang, Junfeng; Sun, Caige; Huang, Chun; Lu, Yujie; Dai, Pan; Xu, Yajuan; He, Wuming

doi:10.1039/d2ra03321f

Cited by 6 publications

(5 citation statements)

References 33 publications

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“…The times required to change the resistance by 90% after injecting or exhausting the target gas were used to define the response and recovery time. Gas-sensing properties were analyzed by injecting saturated acetone vapor into the test chamber or exhausting acetone from the chamber as per our previous report [35]. When acetone gas was injected, the gas was stirred evenly by the fans.…”

Section: Preparation and Measurement Of Sensorsmentioning

confidence: 99%

Preparation and Enhanced Acetone-Sensing Properties of ZIF-8-Derived Co3O4@ZnO Microspheres

et al. 2023

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In this work, ZIF-8-derived Co3O4@ZnO microspheres were prepared by a liquid-phase concentration-controlled nucleation strategy. The results of the material characterization showed that Co3O4@ZnO microspheres were obtained, and the surface structure could be controlled with the concentration of the ligand. Compared with pure Co3O4 microspheres, the operating temperature of optimized Co3O4@ZnO microspheres increased by 90 °C after the gas-sensing test. The response to 50 ppm acetone of Co3O4@ZnO microspheres was 4.5 times higher than that of pure Co3O4, and the detection limit reached 0.5 ppm. Meanwhile, Co3O4@ZnO microspheres showed a shorter response-recovery time and better selectivity. The enhanced-sensing mechanism of the ZIF-8-derived Co3O4@ZnO microspheres was also analyzed.

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Section: Preparation and Measurement Of Sensorsmentioning

confidence: 99%

Preparation and Enhanced Acetone-Sensing Properties of ZIF-8-Derived Co3O4@ZnO Microspheres

et al. 2023

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“…It can be seen that no significant change can be detected in the four curves. The inherent antihumidity characteristic of Co 3 O 4 [39] and the abundant defect oxygen in In@Co 3 O 4 samples caused by In doping lead to the good anti-humidity performance. [40] As the water molecules would mainly be adsorbed at the defect sites of materials, [41] the less water vapor would compete with xylene gas.…”

Section: Gas Sensing Propertiesmentioning

confidence: 99%

Enhanced xylene sensing performance of hierarchical flower-like Co₃O₄ via In doping

Zhang

Ling

et al. 2023

Chinese Phys. B

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Metal ions doping is a typical approach for tuning sensing properties of metal oxide semiconductors based gas sensors. Herein, hierarchical flower-like pure and In-doped Co3O4 nanostructures assembled by porous two dimensional (2D) nanosheets are synthesized via a solvothermal method and annealing process. The sensing measurements display that the In@Co3O4-4 based sensor possesses high response values of 55.9 toward 100 ppm xylene at 150 ℃, which are nearly 3.8 times larger than that of pure Co3O4 sensor. Furthermore, it possesses good selectivity and anti-humidity properties. Combined with the results of DFT calculations, the mechanism of enhanced gas sensing performance is analyzed systematically.

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“…Similarly, Fan et al [72] doped Co 3 O 4 with Pr using an electrospray for acetone detection. After Pr doping, the Pr-Co 3 O 4 sensors showed remarkable humidity independence with unchanged response to 20 ppm acetone at 300 • C at a wide humidity range of 30-90% RH.…”

Section: Element Dopingmentioning

confidence: 99%

Recent Progress on Anti-Humidity Strategies of Chemiresistive Gas Sensors

Wang

Zhou

2022

Materials

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In recent decades, chemiresistive gas sensors (CGS) have been widely studied due to their unique advantages of expedient miniaturization, simple fabrication, easy operation, and low cost. As one ubiquitous interference factor, humidity dramatically affects the performance of CGS, which has been neglected for a long time. With the rapid development of technologies based on gas sensors, including the internet of things (IoT), healthcare, environment monitoring, and food quality assessing, the humidity interference on gas sensors has been attracting increasing attention. Inspiringly, various anti-humidity strategies have been proposed to alleviate the humidity interference in this field; however, comprehensive summaries of these strategies are rarely reported. Therefore, this review aims to summarize the latest research advances on humidity-independent CGS. First, we discussed the humidity interference mechanism on gas sensors. Then, the anti-humidity strategies mainly including surface engineering, physical isolation, working parameters modulation, humidity compensation, and developing novel gas-sensing materials were successively introduced in detail. Finally, challenges and perspectives of improving the humidity tolerance of gas sensors were proposed for future research.

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Effect of Pr/Zn on the anti-humidity and acetone-sensing properties of Co₃O₄ prepared by electrospray

Abstract: With the synergistic effect of Pr and Zn, the material of Co3O4 mixed with Pr/Zn exhibits improved properties of anti-humidity and acetone sensitivity.

Cited by 6 publications

References 33 publications

Preparation and Enhanced Acetone-Sensing Properties of ZIF-8-Derived Co3O4@ZnO Microspheres

Preparation and Enhanced Acetone-Sensing Properties of ZIF-8-Derived Co3O4@ZnO Microspheres

Enhanced xylene sensing performance of hierarchical flower-like Co₃O₄ via In doping

Recent Progress on Anti-Humidity Strategies of Chemiresistive Gas Sensors

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Effect of Pr/Zn on the anti-humidity and acetone-sensing properties of Co3O4 prepared by electrospray

Abstract: With the synergistic effect of Pr and Zn, the material of Co3O4 mixed with Pr/Zn exhibits improved properties of anti-humidity and acetone sensitivity.

Cited by 6 publications

References 33 publications

Preparation and Enhanced Acetone-Sensing Properties of ZIF-8-Derived Co3O4@ZnO Microspheres

Preparation and Enhanced Acetone-Sensing Properties of ZIF-8-Derived Co3O4@ZnO Microspheres

Enhanced xylene sensing performance of hierarchical flower-like Co3O4 via In doping

Recent Progress on Anti-Humidity Strategies of Chemiresistive Gas Sensors

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Product

Resources

About

Effect of Pr/Zn on the anti-humidity and acetone-sensing properties of Co₃O₄ prepared by electrospray

Enhanced xylene sensing performance of hierarchical flower-like Co₃O₄ via In doping