Mesoporous In2O3 nanocrystals: synthesis, characterization and NOx gas sensor at room temperature

Abstract In this paper, MoO3/MoSe2 n-n heterostructure was constructed for fabricating trimethylamine (TMA) gas sensor by an improved hydrothermal and spin-coating method. The surface morphology and microstructure of the prepared materials were analyzed by XRD, XPS, SEM and TEM characterization methods. The microstructural characterization results demonstrated that the MoO3/MoSe2 heterostructure had been successfully synthesized, in which the MoSe2 had a flower-shaped structure, and MoO3 had a rod-shaped structure. At the same time, the MoSe2 surface exhibited periodic honeycomb structure. The gas-sensitivity experimental results showed that the proposed MoO3/MoSe2 sensor had excellent TMA sensing performance at room temperature, including high response capability, low detection limit (20 ppb), short response/recovery time (12 s/19 s), long-term stability, good repeatability and outstanding selectivity. The heterostructure of MoO3/MoSe2 had made outstanding contributions to the enhanced TMA gas sensing performance at room temperature.

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Co3O4@PEI/Ti3C2Tx MXene nanocomposites for a highly sensitive NOx gas sensor with a low detection limit

Journal of Materials Chemistry A ◽

10.1039/d0ta11392a ◽

2021 ◽

Author(s):

Baihe Sun ◽

He Lv ◽

Zhuo Liu ◽

Jue Wang ◽

Xue Bai ◽

...

Keyword(s):

Detection Limit ◽

Nitrogen Oxides ◽

Gas Sensor ◽

Gas Sensing ◽

Adsorption Property ◽

Sensor Material ◽

Low Detection Limit ◽

Highly Sensitive ◽

Nox Gas Sensor ◽

Sensing Performance

The CoPM-24 gas sensor material showed an excellent gas sensing performance to nitrogen oxides, that mainly attributed to their excellent adsorption property and unique heterostructure.

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Highly active and porous single-crystal In2O3 nanosheet for NOx gas sensor with excellent response at room temperature

RSC Advances ◽

10.1039/c7ra05446g ◽

2017 ◽

Vol 7 (53) ◽

pp. 33419-33425 ◽

Cited By ~ 16

Author(s):

Li Sun ◽

Wencheng Fang ◽

Ying Yang ◽

Hui Yu ◽

Tingting Wang ◽

...

Keyword(s):

Detection Limit ◽

Response Time ◽

Single Crystal ◽

Gas Sensor ◽

Room Temperature ◽

Fast Response ◽

Fast Response Time ◽

Excellent Response ◽

Highly Active ◽

Nox Gas Sensor

Porous single-crystal In2O3 nanosheet was well-designed and prepared through calcination after liquid reflux, then exhibited a distinguished response, fast response time to NOx with good selectivity and low detection limit at room temperature.

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An In2O3 nanorod-decorated reduced graphene oxide composite as a high-response NOx gas sensor at room temperature

New Journal of Chemistry ◽

10.1039/c7nj00993c ◽

2017 ◽

Vol 41 (15) ◽

pp. 7517-7523 ◽

Cited By ~ 14

Author(s):

Wencheng Fang ◽

Ying Yang ◽

Hui Yu ◽

Xiangting Dong ◽

Ruihong Wang ◽

...

Keyword(s):

Graphene Oxide ◽

Detection Limit ◽

Response Time ◽

Reduced Graphene Oxide ◽

Gas Sensor ◽

Room Temperature ◽

Fast Response ◽

Oxide Composite ◽

Reduced Graphene ◽

Nox Gas Sensor

An In2O3 nanorod-decorated reduced graphene oxide composite has been successfully synthesized, and this composite shows a good response, fast response time to NOx with good selectivity and low detection limit at room temperature.

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Construction of MoO3/MoSe2 nanocomposite-based gas sensor for low detection limit trimethylamine sensing at room temperature

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-021-06242-5 ◽

2021 ◽

Author(s):

Lanjuan Zhou ◽

Qian Mi ◽

Yingbo Jin ◽

Tingting Li ◽

Dongzhi Zhang

Keyword(s):

Detection Limit ◽

Gas Sensor ◽

Room Temperature ◽

Low Detection Limit

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One-step synthesis of flower-shaped WO3 nanostructures for a high-sensitivity room-temperature NOx gas sensor

RSC Advances ◽

10.1039/c6ra21322g ◽

2016 ◽

Vol 6 (108) ◽

pp. 106880-106886 ◽

Cited By ~ 12

Author(s):

Wencheng Fang ◽

Ying Yang ◽

Hui Yu ◽

Xiangting Dong ◽

Tingting Wang ◽

...

Keyword(s):

Detection Limit ◽

Room Temperature ◽

Gas Sensing ◽

High Sensitivity ◽

Facile Hydrothermal Method ◽

Short Response Time ◽

One Step ◽

Wo3 Nanostructures ◽

Nox Gas Sensor ◽

Sensing Performance

Flower-shaped WO3 nanoparticles were successfully synthesized by using a facile hydrothermal method. These particles exhibited excellent room-temperature NOx gas-sensing performance with high sensitivity, short response time and low detection limit.

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Enhancing room-temperature NO2 gas sensing performance based on a metal phthalocyanine/graphene quantum dot hybrid material

RSC Advances ◽

10.1039/d0ra10310a ◽

2021 ◽

Vol 11 (10) ◽

pp. 5618-5628

Author(s):

Wenkai Jiang ◽

Xinwei Chen ◽

Tao Wang ◽

Bolong Li ◽

Min Zeng ◽

...

Keyword(s):

Quantum Dot ◽

Gas Sensor ◽

Hybrid Material ◽

High Performance ◽

Room Temperature ◽

Gas Sensing ◽

Metal Phthalocyanine ◽

Graphene Quantum Dot ◽

Sensing Performance

A high performance gas sensor based on a metal phthalocyanine/graphene quantum dot hybrid material was fabricated for NO2 detection at room-temperature.

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