A highly sensitive and biodegradable NO2 sensor made with CNTs and Ni(OH)2/NiO:Yb microparticles

Molina, Antonia Infantes; Oliva, A.I.; Zakhidov, Anvar A.; Valadez-Renteria, E.; Rodríguez-González, Vicente; Encinas, Armando; Oliva, J.

doi:10.1016/j.jallcom.2022.163896

Cited by 7 publications

(7 citation statements)

References 65 publications

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Section: Flexible Gas Sensor Based On Carbon Nanotubes: Gas Detection...mentioning

confidence: 99%

“…Molina et al. [ 78 ] prepared flexible and biodegradable NO 2 sensors by doping Yb in nickel oxide and nickel hydroxide at 200 and 400 °C, respectively. This mixture consists of porous particles of several tens of microns.…”

Section: Flexible Gas Sensor Based On Carbon Nanotubes: Gas Detection...mentioning

confidence: 99%

“…In addition, it has been reported that CNTs hybrid films with MOs and polymers for NO 2 gas sensing. The preparation, structures, types, and flexible substrates for NO 2 sensing are listed in Sc-SWCNTs [29] TFT / Printing PET MWCNTs/organic electrolyte [32] Capacitive Chemiresistor Nanoparticles, hollow nanocubes Wet chemical route and CVD PI CNTs/Ni(OH) 2 /NiO:Yb [78] Chemiresistor Microparticles Blade coating Algae cellulose N-MWCNTs/PPy [44] Chemiresistor Core-shell CVD and in situ self-assembly PI SWCNTs/PEI [79] Chemiresistor / Spray-coating PTFE…”

Section: Nitrogen Dioxide (No 2 )mentioning

confidence: 99%

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Flexible Gas Sensors Based on Carbon Nanotube Hybrid Films: A Review

Huang,

Pang,

Yang

et al. 2023

Adv Materials Technologies

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Flexible gas sensors, which can detect gas markers from the human body and hazardous gases from the environment, are attracting tremendous attention recently. Carbon nanotube (CNT) films are explored for flexible gas sensors due to its sensing ability at room temperature, strong adsorption for foreign molecules, mechanical robustness, and remarkable flexibility, and providing nanoscale surfaces with large surface area for various functional materials, etc. In this paper, recent advances in flexible gas sensors based on CNT films are reviewed. It discusses various strategies to design the structure of flexible CNT films and improve flexibility/stretchability performance. It generalizes different types of sensitive materials loaded for detected gases and analyzes the sensing mechanism of CNT films, with interface interactions and synergistic effects leading to an improvement in gas sensing. In addition, it discusses the preparation of CNT self‐standing films and the use of flexible substrates in transformation and assembly, in order to enable CNT films with improved flexible properties. CNT films show remarkable response and flexibility to hazard or greenhouse gases, such as ammonia, nitrogen dioxide, hydrogen, nitric oxide, carbon dioxide, and others. Summary and perspectives toward the future development of flexible gas sensors based on CNT films are proposed.

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Section: Flexible Gas Sensor Based On Carbon Nanotubes: Gas Detection...mentioning

confidence: 99%

Section: Flexible Gas Sensor Based On Carbon Nanotubes: Gas Detection...mentioning

confidence: 99%

Section: Nitrogen Dioxide (No 2 )mentioning

confidence: 99%

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Flexible Gas Sensors Based on Carbon Nanotube Hybrid Films: A Review

Huang,

Pang,

Yang

et al. 2023

Adv Materials Technologies

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“…9 Oliva et al have fabricated NO 2 sensors with high sensitivity by depositing Ybdoped nickel oxide or hydroxide on carbon nanotubes and the response and recovery time for 100 ppm NO 2 at RT were about 16 and 252 s, respectively. 10 Compared with carbon nanotubes, graphene has a larger surface area, better carrier mobility, and more adsorption sites besides good electrical conductivity. 11−15 Composites comprising CeO 2 and graphene have been reported as NO 2 sensing materials at RT.…”

Section: Introductionmentioning

confidence: 99%

“…The poor NO 2 sensing properties of metal oxides are mainly attributed to the low electrical conductivity at RT. − It has recently been observed that the electrical conductivity can be enhanced if the metal oxide is deposited on conductive materials such as carbonaceous materials. − For example, Molina et al have found that NO 2 sensing at RT is better if the CeO 2 nanoparticles were anchored on carbon nanotubes. The response and recovery times for detection of 100 ppm NO 2 at RT were about 22.9 and 345.2 s, respectively …”

Section: Introductionmentioning

confidence: 99%

Polar Cubic CeO₂ Nanoparticles on Graphene for Enhanced Room-Temperature NO₂ Sensing Performance

Zhang

Huang

et al. 2023

ACS Appl. Nano Mater.

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Composites of graphene and CeO2 nanoparticles with high-energy {100} facets exposed are prepared by the hydrothermal method. The percentage of high-energy {100} polar plane increases with elevating temperature, but the proportion of Ce3+ and oxygen vacancy (Ov) decreases. As a result, the sensitivity of CeO2{100}/graphene composites toward NO2 at room temperature is enhanced. First-principles calculations are done to uncover the mechanism. The adsorption energy of NO2 on the six-coordinated Ce of the CeO2{100} polar plane is the most negative, indicating the most preferred sites for the adsorption of NO2. However, if more Ov are generated, the proportion of six-coordinated Ce atoms will be reduced, and the interaction with NO2 will be reduced because of charge recombination. Consequently, the sensing performances toward NO2 are deteriorated. The results provide new information pertaining to the design and fabrication of room-temperature sensing materials for NO2.

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Improved NO2 gas sensing performance of 2D MoS2/Ti3C2Tx MXene nanocomposite

Tri

Noh

2022

Applied Surface Science

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A highly sensitive and biodegradable NO2 sensor made with CNTs and Ni(OH)2/NiO:Yb microparticles

Cited by 7 publications

References 65 publications

Flexible Gas Sensors Based on Carbon Nanotube Hybrid Films: A Review

Flexible Gas Sensors Based on Carbon Nanotube Hybrid Films: A Review

Polar Cubic CeO₂ Nanoparticles on Graphene for Enhanced Room-Temperature NO₂ Sensing Performance

Improved NO2 gas sensing performance of 2D MoS2/Ti3C2Tx MXene nanocomposite

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A highly sensitive and biodegradable NO2 sensor made with CNTs and Ni(OH)2/NiO:Yb microparticles

Cited by 7 publications

References 65 publications

Flexible Gas Sensors Based on Carbon Nanotube Hybrid Films: A Review

Flexible Gas Sensors Based on Carbon Nanotube Hybrid Films: A Review

Polar Cubic CeO2 Nanoparticles on Graphene for Enhanced Room-Temperature NO2 Sensing Performance

Improved NO2 gas sensing performance of 2D MoS2/Ti3C2Tx MXene nanocomposite

Contact Info

Product

Resources

About

Polar Cubic CeO₂ Nanoparticles on Graphene for Enhanced Room-Temperature NO₂ Sensing Performance