Prototype Fabrication and Performance Evaluation of Metal-oxide Nanoparticle Sensor for Detecting of Hazardous and Noxious Substances
Diluted in Sea Water

An, Sangsu; Lee, Changhan; Noh, Jaeha; Cho, Youngji; Chang, Jiho; Lee, Sang‐Tae; Kim, Yongmyung; Lee, Moonjin

doi:10.7837/kosomes.2022.28.s.023

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To address these issues, our research group proposed a sensor utilizing indium tin oxide (ITO) nanoparticles for continuous automatic measurement in water. (12) We demonstrated its ability to detect oils (13) and hazardous chemicals. (14) Films using ITO nanoparticles showed a higher chemical stability in water than those using other metal oxides.…”

Section: Introductionmentioning

confidence: 94%

“…(15) Moreover, a recent result confirmed the capability of an ITO sensor to detect ethanol concentrations as low as 619 ppb. (12) However, according to existing research, the measurement time was tens of minutes or more and needed improvement. One possible way to shorten the measurement time is to increase the sintering temperature to increase the conductivity of the film and minimize grain boundary scattering.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance Improvement of Indium Tin Oxide Electrochemical Sensor by Mixing Carbon Black

Lee,

An,

Cho

et al. 2024

Sensors and Materials

View full text Add to dashboard Cite

We studied a method of implementing an electrochemical sensor with high response speed using a film made of metal oxide nanoparticles. The optimal conditions for sensor production were estimated by calculating the sensor's response when the bulk and surface resistances of the film changed. We also implemented a new manufacturing process to fabricate the sensor. To achieve high response speed, an ITO:CB film was produced by mixing ITO nanoparticles and carbon black (CB) powder. Depending on the CB content of the ITO:CB film, the response time of the sensor continued to decrease from 337 s (CB = 0 wt%) to 2 s (CB = 50 wt%). However, even in this case, a continuous decrease in response intensity was observed as well. Therefore, to ensure high response speed and appropriate response intensity, a new process of oxygen ashing the film surface was introduced. As a result, it was possible to secure high response intensity and high response speed at CB contents up to 30 wt%. On the basis of these results, we confirmed that CB mixing and surface oxygen ashing can improve both the response intensity and speed of sensors using metal oxide nanoparticle films.

show abstract

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%