Ultra-fast and highly selective room-temperature formaldehyde gas sensing of Pt-decorated MoO3 nanobelts

Fu, Xingxing; Yang, Piaoyun; Xiao, Xufeng; Zhou, Di; Huang, Rui; Zhang, Xianghui; Cao, Fan; Xiong, Juan; Hu, Yongming; Tu, Ya-Fang; Zou, Yunling; Zhao, Wenzhu; Gu, Haoshuang

doi:10.1016/j.jallcom.2019.05.145

Cited by 92 publications

(30 citation statements)

References 52 publications

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“…For instance, the Au nanoparticle with a larger work function than MoO 3 received electrons from MoO 3 nanosheets, leading to the appearance of electron depletion layer at the Au/MoO 3 Schottky junction, and the enhanced ethanol detection capabilities were attributed to the resulting high resistance (Yan et al, 2016). Considering Pt nanoparticles combined MoO 3 nanobelts, the superior selectivity to formaldehyde was conducted, which was ascribed to the catalytic effect of loaded particles on formaldehyde during the surface gas sensing process (Fu et al, 2019). As for the RuO 2 nanoparticles modified MoO 3 nanobelts, oxygen vacancies produced on the surface, creating more adsorption-desorption sites for gas molecules .…”

Section: Functional Modification Methodsmentioning

confidence: 99%

Volatile Organic Compounds Gas Sensors Based on Molybdenum Oxides: A Mini Review

Wang¹,

Zhou²,

Peng³

et al. 2020

Front. Chem.

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As a typical n-type semiconductor, MoO 3 has been widely applied in the gas-detection field due to its competitive physicochemical properties and ecofriendly characteristics. Volatile organic compounds (VOCs) are harmful to the atmospheric environment and human life, so it is necessary to quickly identify the presence of VOCs in the air. This review briefly introduced the application progress of an MoO 3-based sensor in VOCs detection. We mainly emphasized the optimization strategies of a high performance MoO 3 , which consists of morphology-controlled synthesis and electronic properties functional modification. Besides the general synthesis methods, its gas-sensing properties and mechanism were briefly discussed. In conclusion, the application status of MoO 3 in gas-sensing and the challenges still to be solved were summarized.

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Section: Functional Modification Methodsmentioning

confidence: 99%

Volatile Organic Compounds Gas Sensors Based on Molybdenum Oxides: A Mini Review

Wang¹,

Zhou²,

Peng³

et al. 2020

Front. Chem.

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“…Besides MoS 2 and bP, another non‐carbon 2DMs‐based VOCs sensor that have been reported recently is MoO 3 . [ 58 ] Fu et al. has successfully synthesized Pt‐decorated MoO 3 nanobelts using hydrothermal and chemical reduction process.…”

Section: Types Of Solid‐state Vocs Sensormentioning

confidence: 99%

Volatile Organic Compound Sensors Based on 2D Materials

Tan

Ang

2021

Adv Elect Materials

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Due to their unique chemical and physical properties, 2D inorganic materials (2DMs) have attracted a lot of attention in recent years as an attractive platform for diverse applications in opto‐electronics, energy generation and storage, and sensing. This article presents the progress being made in sensors designed for measuring volatile organic compounds (VOCs) in ambient air. It considers commercially available sensors, such as the amperometric and conductometric types, and the recent advancements in VOCs sensors employing 2DMs and their nanocomposites. Their performance is summarized in a graphical form and the challenges and possible mitigation methods for these types of VOC sensor are highlighted.

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“…Doped nanobelts were employed in the discriminative assay of HCHO as detailed below. Er-doped SnO 2 and Pt-decorated MoO 3 nanobelts were reported for the quantitation of volatile HCHO [ 258 , 259 ]. As shown in Figure 14 , Er-doped SnO 2 nanobelts [ 258 ] display a distinct response to HCHO vapor (R a /R g = 9 for 100 ppm at 230 °C; response/recovery time = 17 s/25 s) with a LOD of 0.141 ppm.…”

Section: Various Nanostructures In Volatile Aldehyde Detectionmentioning

confidence: 99%

“…As shown in Figure 14 , Er-doped SnO 2 nanobelts [ 258 ] display a distinct response to HCHO vapor (R a /R g = 9 for 100 ppm at 230 °C; response/recovery time = 17 s/25 s) with a LOD of 0.141 ppm. On the other hand, Pt-decorated MoO 3 nanobelts [ 259 ] are more impressive with a sensor response (R a /R g = ~25% for 100 ppm; response/recovery time = 17.8 s/10.5 s; LOD = 1 ppm) at room temperature, thereby become a noteworthy material in HCHO sensory research.…”

Section: Various Nanostructures In Volatile Aldehyde Detectionmentioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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Environmental pollution related to volatile organic compounds (VOCs) has become a global issue which attracts intensive work towards their controlling and monitoring. To this direction various regulations and research towards VOCs detection have been laid down and conducted by many countries. Distinct devices are proposed to monitor the VOCs pollution. Among them, chemiresistor devices comprised of inorganic-semiconducting materials with diverse nanostructures are most attractive because they are cost-effective and eco-friendly. These diverse nanostructured materials-based devices are usually made up of nanoparticles, nanowires/rods, nanocrystals, nanotubes, nanocages, nanocubes, nanocomposites, etc. They can be employed in monitoring the VOCs present in the reliable sources. This review outlines the device-based VOC detection using diverse semiconducting-nanostructured materials and covers more than 340 references that have been published since 2016.

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Ultra-fast and highly selective room-temperature formaldehyde gas sensing of Pt-decorated MoO3 nanobelts

Cited by 92 publications

References 52 publications

Volatile Organic Compounds Gas Sensors Based on Molybdenum Oxides: A Mini Review

Volatile Organic Compounds Gas Sensors Based on Molybdenum Oxides: A Mini Review

Volatile Organic Compound Sensors Based on 2D Materials

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

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