Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO Nanostructures
Various ZnO nanostructures such as porous nanorods and two hierarchical structures consisting of porous nanosheets or crystalline nanorods were prepared by the reaction of mixtures of oleic-acid-dissolved ethanol solutions and aqueous dissolved Zn-precursor solutions in the presence of NaOH. All thr...
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| Format: | Article |
| Language: | English |
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MDPI AG
2011-10-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/11/10/9685/ |
| _version_ | 1818038078211620864 |
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| author | Jong-Heun Lee Hyo-Joong Kim Kwon-Il Choi Hae-Ryong Kim Kang-Min Kim |
| author_facet | Jong-Heun Lee Hyo-Joong Kim Kwon-Il Choi Hae-Ryong Kim Kang-Min Kim |
| author_sort | Jong-Heun Lee |
| collection | DOAJ |
| description | Various ZnO nanostructures such as porous nanorods and two hierarchical structures consisting of porous nanosheets or crystalline nanorods were prepared by the reaction of mixtures of oleic-acid-dissolved ethanol solutions and aqueous dissolved Zn-precursor solutions in the presence of NaOH. All three ZnO nanostructures showed sensitive and selective detection of C2H5OH. In particular, ultra-high responses (Ra/Rg = ~1,200, Ra: resistance in air, Rg: resistance in gas) to 100 ppm C2H5OH was attained using porous nanorods and hierarchical structures assembled from porous nanosheets, which is one of the highest values reported in the literature. The gas response and linearity of gas sensors were discussed in relation to the size, surface area, and porosity of the nanostructures. |
| first_indexed | 2024-12-10T07:37:01Z |
| format | Article |
| id | doaj.art-0004da53083445ab81add3c073295783 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T07:37:01Z |
| publishDate | 2011-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0004da53083445ab81add3c0732957832022-12-22T01:57:24ZengMDPI AGSensors1424-82202011-10-0111109685969910.3390/s111009685Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO NanostructuresJong-Heun LeeHyo-Joong KimKwon-Il ChoiHae-Ryong KimKang-Min KimVarious ZnO nanostructures such as porous nanorods and two hierarchical structures consisting of porous nanosheets or crystalline nanorods were prepared by the reaction of mixtures of oleic-acid-dissolved ethanol solutions and aqueous dissolved Zn-precursor solutions in the presence of NaOH. All three ZnO nanostructures showed sensitive and selective detection of C2H5OH. In particular, ultra-high responses (Ra/Rg = ~1,200, Ra: resistance in air, Rg: resistance in gas) to 100 ppm C2H5OH was attained using porous nanorods and hierarchical structures assembled from porous nanosheets, which is one of the highest values reported in the literature. The gas response and linearity of gas sensors were discussed in relation to the size, surface area, and porosity of the nanostructures.http://www.mdpi.com/1424-8220/11/10/9685/ZnOgas sensornanostructures, hierarchical structuresself-assembly |
| spellingShingle | Jong-Heun Lee Hyo-Joong Kim Kwon-Il Choi Hae-Ryong Kim Kang-Min Kim Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO Nanostructures Sensors ZnO gas sensor nanostructures, hierarchical structures self-assembly |
| title | Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO Nanostructures |
| title_full | Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO Nanostructures |
| title_fullStr | Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO Nanostructures |
| title_full_unstemmed | Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO Nanostructures |
| title_short | Design of Highly Sensitive C2H5OH Sensors Using Self-Assembled ZnO Nanostructures |
| title_sort | design of highly sensitive c2h5oh sensors using self assembled zno nanostructures |
| topic | ZnO gas sensor nanostructures, hierarchical structures self-assembly |
| url | http://www.mdpi.com/1424-8220/11/10/9685/ |
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