Pt-decorated In2O3 nanoparticles and their ability as a highly sensitive (&lt;10 ppb) acetone sensor for biomedical applications

Karmaoui, Mohamed; Leonardi, Salvatore Gianluca; Latino, M.; Tobaldi, David Maria; Donato, Nicola; Pullar, Robert C.; Seabra, M.P.; Labrincha, J.A.; Neri, G.

doi:10.1016/j.snb.2016.02.100

Cited by 100 publications

(45 citation statements)

References 45 publications

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“…Furthermore, as extensively previously discussed, many nanostructures have proved able to provide excellent sensitivity and selectivity to the VOCs even in presence of medium-high RH levels [40,116,119,199].…”

Section: Selectivity and Effect Of Humiditymentioning

confidence: 72%

“…In particular, at the temperatures lower than 400 °C, where most of metal oxide based VOCs sensors work, the O − (ads) is the predominant species [40]. The gas sensing mechanism is essentially explained by the energy-band bending theory.…”

Section: Operating Principle and Detection Mechanisms Of Semiconductimentioning

confidence: 99%

“…Karmaoui et al [40] reported the high sensitivity of sub-spherical In 2 O 3 /Pt nanoparticles for detecting ppb levels of acetone. By a novel non-aqueous sol gel route the authors synthesized monodispersed and homogeneous In 2 O 3 NPs with diameters of 6-8 nm, decorated with ultrafine Pt NPs (2-3 nm) on their surface.…”

Section: Acetone Sensorsmentioning

confidence: 99%

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Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A review

Mirzaei

Leonardi

Neri

2016

Ceramics International

988

389

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Section: Selectivity and Effect Of Humiditymentioning

confidence: 72%

Section: Operating Principle and Detection Mechanisms Of Semiconductimentioning

confidence: 99%

See 1 more Smart Citation

Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A review

Mirzaei

Leonardi

Neri

2016

Ceramics International

988

389

View full text Add to dashboard Cite

“…In general, the main advantage of all the abovementioned polymers is their capability of working at room temperature, which make them outstanding compared with other materials, for instance metal and metal-oxides which require very high temperatures (from 200 °C [30,31,32] up to 400 °C [33,34], or even higher [35]). Moreover, CPs have been in the spotlight of research investigations, especially in the field of chemical sensors, thanks to their high conductivity which results from π-electron conjugation [36,37].…”

Section: Basic Characteristics Of Cpmentioning

confidence: 99%

Nanostructured Polypyrrole-Based Ammonia and Volatile Organic Compound Sensors

Šetka

Drbohlavová

Hubálek

2017

Sensors

114

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The aim of this review is to summarize the recent progress in the fabrication of efficient nanostructured polymer-based sensors with special focus on polypyrrole. The correlation between physico-chemical parameters, mainly morphology of various polypyrrole nanostructures, and their sensitivity towards selected gas and volatile organic compounds (VOC) is provided. The different approaches of polypyrrole modification with other functional materials are also discussed. With respect to possible sensors application in medicine, namely in the diagnosis of diseases via the detection of volatile biomarkers from human breath, the sensor interaction with humidity is described as well. The major attention is paid to analytes such as ammonia and various alcohols.

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“…However, due to the high electron-hole recombination rate, the efficiency of In 2 O 3 is still limited. In order to improve the photocatalytic activity of In 2 O 3 , researchers have used a variety of methods, such as morphology control [6,7], metal deposition [8], and combining with semiconductors [9][10][11].…”

mentioning

confidence: 99%

Ball-milling combined calcination synthesis of In2O3/C3N4 for high photocatalytic activity under visible light irradiation

Zhang

Huang

et al. 2017

J Mater Sci: Mater Electron

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important practical value to prepare photocatalytic materials with high activity under visible light.Indium oxide (In 2 O 3 ), a n-type semiconductor material, has a direct band gap of 3.8 eV and an indirect band gap of 2.8 eV [2]. It is an effective sensitizer and its absorption spectrum can extend from ultraviolet region to the visible region. It has been widely used in solar cells [3], flat panel display [4], gas sensor [5]. However, due to the high electron-hole recombination rate, the efficiency of In 2 O 3 is still limited. In order to improve the photocatalytic activity of In 2 O 3 , researchers have used a variety of methods, such as morphology control [6,7], metal deposition [8], and combining with semiconductors [9][10][11].Graphitic carbon nitride (denoted as C 3 N 4 ) is a kind of medium band gap (2.7 eV) nonmetal photocatalyst [12]. It has good chemical stability and thermal stability. Furthermore, it can be used to split water into H 2 and O 2 and degrade organic pollutants under visible light irradiation [13]. But high photoproduction electron-hole recombination rate seriously affects the catalytic properties of C 3 N 4 . C 3 N 4 can be easily adhered on the surface of other compounds due to its softness. Deferent types of strategies have been used to make the catalytic properties of C 3 N 4 better, including coupling with metals [14][15][16] [29]. Compared with the original semiconductor materials, the photocatalytic performance of these composites were enhanced obviously. Through mechanism analyzing, the reason for photocatalytic performance enhancements may be the improvement of electron-hole migration and separation.Recently, some investigations about In 2 O 3 /C 3 N 4 were reported. In 2 O 3 /C 3 N 4 composites can be used for hydrogen evolution

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Pt-decorated In2O3 nanoparticles and their ability as a highly sensitive (<10 ppb) acetone sensor for biomedical applications

Cited by 100 publications

References 45 publications

Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A review

Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A review

Nanostructured Polypyrrole-Based Ammonia and Volatile Organic Compound Sensors

Ball-milling combined calcination synthesis of In2O3/C3N4 for high photocatalytic activity under visible light irradiation

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