Exclusive detection of ethylene using metal oxide chemiresistors with a Pd–V2O5–TiO2 yolk–shell catalytic overlayer via heterogeneous Wacker oxidation

Moon, Young Kook; Kim, Ju Hyeong; Jeong, Seong‐Yong; Lee, Soo Min; Park, Seon Ju; Kim, Tae Hyun; Lee, Jong Heun

doi:10.1039/d2ta08425b

Cited by 11 publications

(10 citation statements)

References 67 publications

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“…Apart from high-protein foods, fruits and vegetables are perishable foods whose condition can also be evaluated by measuring the plant hormone ethylene (C 2 H 4 ). Moon et al developed a C 2 H 4 gas senor by using Pd–V 2 O 5 –TiO 2 , which showed an extremely high sensitivity and selectivity at sub-ppm levels . The above studies open up new possibilities for more accurate and earlier detection in the field of food safety and quality control.…”

Section: Gas Sensing Applications and Challenges For Tio2 Nanostructuresmentioning

confidence: 99%

The Challenges and Opportunities for TiO₂ Nanostructures in Gas Sensing

Zhao,

Wang,

Cai

et al. 2024

ACS Sens.

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Chemiresistive gas sensors based on metal oxides have been widely applied in industrial monitoring, medical diagnosis, environmental pollutant detection, and food safety. To further enhance the gas sensing performance, researchers have worked to modify the structure and function of the material so that it can adapt to different gas types and environmental conditions. Among the numerous gas-sensitive materials, n-type TiO 2 semiconductors are a focus of attention for their high stability, excellent biosafety, controllable carrier concentration, and low manufacturing cost. This Perspective first introduces the sensing mechanism of TiO 2 nanostructures and composite TiO 2 -based nanomaterials and then analyzes the relationship between their gassensitive properties and their structure and composition, focusing also on technical issues such as doping, heterojunctions, and functional applications. The applications and challenges of TiO 2 -based nanostructured gas sensors in food safety, medical diagnosis, environmental detection, and other fields are also summarized in detail. Finally, in the context of their practical application challenges, future development technologies and new sensing concepts are explored, providing new ideas and directions for the development of multifunctional intelligent gas sensors in various application fields.

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Section: Gas Sensing Applications and Challenges For Tio2 Nanostructuresmentioning

confidence: 99%

The Challenges and Opportunities for TiO₂ Nanostructures in Gas Sensing

Zhao,

Wang,

Cai

et al. 2024

ACS Sens.

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“…4b). 70 They used the Pd–V 2 O 5 –TiO 2 yolk–shell overlayer as a heterogeneous Wacker oxidation catalyst, which reforms less reactive ethylene into highly reactive acetaldehyde. This reforming reaction improved the response to ethylene, as acetaldehyde is a well-known reactive species.…”

Section: Chemoresistive Gas Sensors For Food Quality Monitoringmentioning

confidence: 99%

Food quality assessment using chemoresistive gas sensors: achievements and future perspectives

Park,

Lee,

et al. 2024

Sustainable Food Technol.

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“…In comparison with the widely studied hetero-HNs, , the different nanobuilding blocks in homo-HNs have the same composition, which can effectively avoid the stress among hetero-HNs and increase the structural stability. Meanwhile, the synergy of different nanounits with similar Fermi energy levels can significantly enhance the sensing ability of pure metal oxides .…”

Section: Introductionmentioning

confidence: 99%

Design Synthesis of ZnO Tube Bundles Rich in Oxygen Vacancies Assembled by Nanorods/Quasi-Nanospheres for Enhanced Sensing to NO/NO₂

Sun

et al. 2023

ACS Sustainable Chem. Eng.

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How to in situ construct homo-nanostructures assembled from diverse nanobuilding blocks and achieve high sensing of NO/NO2 gases is still challenging. To this end, two biomorphic ZnO materials cross-linked by nanorods and quasi-nanospheres were obtained through facile zinc nitrate solution infiltration and calcination using kitchen garbage of a discarded loofah sponge as the biotemplate. Among the tube bundles obtained by calcination at 600 °C, ZnO-6 possesses good crystallinity, small-sized mesopore distribution, and large specific surface area, as well as abundant oxygen vacancies. The synergy of the aforementioned microstructural features can improve electron transport efficiency, promote fast gas diffusion, increase the content of adsorbed oxygen species, and expose more surface active sites, thereby efficiently improving its sensing properties toward nitrogen oxides. At 92 °C, the ZnO-6 sensor simultaneously achieves large response values from 100 to 10 ppm of NO and 342 to 10 ppm of NO2, and their recovery times are reduced to 12 and 15 s, respectively. These indicators have apparent superiority over most reported corresponding metal oxide-based sensors. In addition, the sensor can apply the detection of trace NO x in real environments.

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Exclusive detection of ethylene using metal oxide chemiresistors with a Pd–V₂O₅–TiO₂ yolk–shell catalytic overlayer via heterogeneous Wacker oxidation

Abstract: The precise detection of trace concentrations of ethylene, a plant hormone gas, is essential for controlling plant health and status. However, owing to the simple chemical structure and low reactivity...

Cited by 11 publications

References 67 publications

The Challenges and Opportunities for TiO₂ Nanostructures in Gas Sensing

The Challenges and Opportunities for TiO₂ Nanostructures in Gas Sensing

Food quality assessment using chemoresistive gas sensors: achievements and future perspectives

Design Synthesis of ZnO Tube Bundles Rich in Oxygen Vacancies Assembled by Nanorods/Quasi-Nanospheres for Enhanced Sensing to NO/NO₂

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Exclusive detection of ethylene using metal oxide chemiresistors with a Pd–V2O5–TiO2 yolk–shell catalytic overlayer via heterogeneous Wacker oxidation

Abstract: The precise detection of trace concentrations of ethylene, a plant hormone gas, is essential for controlling plant health and status. However, owing to the simple chemical structure and low reactivity...

Cited by 11 publications

References 67 publications

The Challenges and Opportunities for TiO2 Nanostructures in Gas Sensing

The Challenges and Opportunities for TiO2 Nanostructures in Gas Sensing

Food quality assessment using chemoresistive gas sensors: achievements and future perspectives

Design Synthesis of ZnO Tube Bundles Rich in Oxygen Vacancies Assembled by Nanorods/Quasi-Nanospheres for Enhanced Sensing to NO/NO2

Contact Info

Product

Resources

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Exclusive detection of ethylene using metal oxide chemiresistors with a Pd–V₂O₅–TiO₂ yolk–shell catalytic overlayer via heterogeneous Wacker oxidation

The Challenges and Opportunities for TiO₂ Nanostructures in Gas Sensing

The Challenges and Opportunities for TiO₂ Nanostructures in Gas Sensing

Design Synthesis of ZnO Tube Bundles Rich in Oxygen Vacancies Assembled by Nanorods/Quasi-Nanospheres for Enhanced Sensing to NO/NO₂