2019
DOI: 10.1039/c9ra00441f
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NiO decorated CeO2 nanostructures as room temperature isopropanol gas sensors

Abstract: NiO decorated CeO2 nanostructures favor enhanced sensing performance towards isopropanol even at room temperature.

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Cited by 75 publications
(31 citation statements)
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“…Generally, when two distinct particles or grains are interconnected, charge redistribution occurs as illustrated in Figure 8 , where a desirable p–n heterojunction formed at the interface region between CeO 2 and NiO due to different band offsets. This produced a local electric field and a potential gradient at the interfacial region [ 40 ]. Additionally, owing to different Fermi levels of CeO 2 and NiO, the band inclined at the interface of the CeO 2 and NiO heterostructure when two distinct particles or grains were interconnected.…”
Section: Resultsmentioning
confidence: 99%
“…Generally, when two distinct particles or grains are interconnected, charge redistribution occurs as illustrated in Figure 8 , where a desirable p–n heterojunction formed at the interface region between CeO 2 and NiO due to different band offsets. This produced a local electric field and a potential gradient at the interfacial region [ 40 ]. Additionally, owing to different Fermi levels of CeO 2 and NiO, the band inclined at the interface of the CeO 2 and NiO heterostructure when two distinct particles or grains were interconnected.…”
Section: Resultsmentioning
confidence: 99%
“…In practical application, the reversibility and long-term stability are also important properties that determine the practicability and cost performance of sensors [ 1 , 2 , 12 , 13 , 38 ]. Thus, the six-cycle experiment of BiFeO 3 sensors to 100 ppm isopropanol at 240 °C was carried out, as shown in Figure 6 a.…”
Section: Resultsmentioning
confidence: 99%
“…Volatile organic compounds (VOCs) are important atmospheric pollutants ubiquitous around us due to their vast application in production and living activities of construction, transportation, furnishing, etc., and can cause human-health problems. Isopropanol, added by IARC (part of WHO) into the lists of group 1 and group 3 carcinogens, is a member of the widely used VOC-family [ 1 ]. It is very harmful for a human to be exposed to isopropanol.…”
Section: Introductionmentioning
confidence: 99%
“…The atmospheric humidity was nearly 23 R.H. (±4) during gas sensing tests. The required amount of liquid acetone concentration was calculated by the following Equation (1) [ 38 ]: where C is the required acetone concentration, is the acetone gas volume fraction, (g mL −1 ) is the density of the liquid acetone, (μL) and (L) are the volumes of the acetone and gas chamber, respectively, and (g mL −1 ) is the molecular weight of the liquid acetone.…”
Section: Methodsmentioning
confidence: 99%