Pseudostoichiometric and oxygen deficient MoOx for efficient sensing of H2S and CO at relatively low operating temperature and analyte concentrations

Ghosh, Dibyendu Kumar; Nandi, Anupam; Bose, S.; Das, Gourab; Kole, Arindam; Sumita, Masao; Singh, Vivek Kumar; Sharma, Uttam; Das, Santanu; Mukherjee, Nillohit

doi:10.1016/j.surfin.2022.102261

Surfaces and Interfaces

2022

DOI: 10.1016/j.surfin.2022.102261

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Pseudostoichiometric and oxygen deficient MoOx for efficient sensing of H2S and CO at relatively low operating temperature and analyte concentrations

Dibyendu Kumar Ghosh

Anupam Nandi²,

S. Bose³

et al.

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2024

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Cited by 2 publications

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Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe₂ Nanoflower Heterojunctions

Zhu,

Wang,

Qiu

et al. 2024

ACS Appl. Nano Mater.

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Gas-sensitive materials play a decisive role in the performance of gas sensors, and room-temperature gas-sensitive materials can effectively reduce the power consumption of sensors. Materials such as metal oxides and selenides have good sensitivity characteristics at room temperature, making them the primary choice for constructing gas-sensitive materials. In this work, Pd−CuO nanorods and SnSe 2 nanoflower heterojunction composites were synthesized successfully. The characterizations confirmed that Pd−CuO nanorods were formed on the SnSe 2 layer. Compared with interfering gas, the Pd−CuO/SnSe 2 sensor exhibited the highest response to CO, which indicated that the selectivity of the sensor to CO was significantly enhanced. The sensor showed highly stable and reversible response recovery characteristics, with essentially no drift observed in the dynamic response to CO in three consecutive cycles. The sensor's exceptional performance is mainly attributed to the heterojunction effect, which enhances charge transfer and CO adsorption. Furthermore, the response mechanism of the composite gas-sensitive material was further explored in conjunction with first-principles density functional theory.

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Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe₂ Nanoflower Heterojunctions

Zhu,

Wang,

Qiu

et al. 2024

ACS Appl. Nano Mater.

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The Effect of CeO2 on the Catalytic Activity and SO2 Resistance of the V2O5-MoO3/TiO2 Catalyst Prepared Using the Ball Milling Method for the NH3-SCR of NO

Zi,

Ye,

Cheng

et al. 2024

Catalysts

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V2O5-WO3(MoO3)/TiO2 catalysts are widely used in industrial denitrification (deNOx) processes based on the selective catalytic reduction (SCR) technique. To lower their cost and shorten the production cycle, V2O5-MoO3/TiO2 catalysts with and without CeO2 modification were prepared using the ball milling method. This study demonstrates that the CeO2-modified catalyst has high NO conversion and a broader temperature window due to the decreased amount of easily reducible vanadium species and the enhanced property of oxygen species activation in CeO2. Meanwhile, the SO2 resistance of the catalyst is restrained due to the strong adsorption and oxidation of SO2 over CeO2 in the catalyst.

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Pseudostoichiometric and oxygen deficient MoOx for efficient sensing of H2S and CO at relatively low operating temperature and analyte concentrations

Cited by 2 publications

References 44 publications

Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe₂ Nanoflower Heterojunctions

Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe₂ Nanoflower Heterojunctions

The Effect of CeO2 on the Catalytic Activity and SO2 Resistance of the V2O5-MoO3/TiO2 Catalyst Prepared Using the Ball Milling Method for the NH3-SCR of NO

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Pseudostoichiometric and oxygen deficient MoOx for efficient sensing of H2S and CO at relatively low operating temperature and analyte concentrations

Cited by 2 publications

References 44 publications

Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe2 Nanoflower Heterojunctions

Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe2 Nanoflower Heterojunctions

The Effect of CeO2 on the Catalytic Activity and SO2 Resistance of the V2O5-MoO3/TiO2 Catalyst Prepared Using the Ball Milling Method for the NH3-SCR of NO

Contact Info

Product

Resources

About

Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe₂ Nanoflower Heterojunctions

Carbon Monoxide Gas Sensor Based on Hydrothermally Synthesized Pd–CuO Nanorods/SnSe₂ Nanoflower Heterojunctions