Highly Sensitive ZnO Nanorod- and Nanoprism-Based NO2 Gas Sensors: Size and Shape Control Using a Continuous Hydrothermal Pilot Plant
| Autor: | Josephine B. M. Goodall, Robert I. Gruar, Christopher J. Tighe, Liang Shi, Russell Binions, Anupriya J. T. Naik, Jawwad A. Darr, Ivan P. Parkin |
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| Rok vydání: | 2013 |
| Předmět: |
Nanostructure
Materials science Oxide Nucleation Nanotechnology Surfaces and Interfaces Condensed Matter Physics Hydrothermal circulation Supercritical fluid Metal chemistry.chemical_compound Pilot plant Chemical engineering chemistry visual_art Electrochemistry visual_art.visual_art_medium General Materials Science Nanorod Spectroscopy |
| Zdroj: | Langmuir. 29:10603-10609 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la402339m |
| Popis: | Continuous hydrothermal flow synthesis of crystalline ZnO nanorods and prisms is reported via a new pilot-scale continuous hydrothermal reactor (at nominal production rates of up to 1.2 g/h). Different size and shape particles of ZnO (wurtsite structure) were obtained via altering reaction conditions such as the concentration of either additive H2O2 or metal salt. Selected ZnO samples (used as prepared) were evaluated as solid oxide gas sensors, showing excellent sensitivity toward NO2 gas. It was found that both the working temperature and gas concentration significantly affected the NO2 gas response at concentrations as low as 1 ppm. |
| Databáze: | OpenAIRE |
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