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Hexagonal zinc oxide (ZnO) with rough surface were synthesized hydrothermal method by surfactant. The morphology and nanostructure were characterized by scanning electron microscopy, EDS mapping, and X-ray diffraction. The synthesis mechanisms of Hexagonal ZnO were discussed, the gas sensing properties of the modified and unmodified ZnO sensors were compared. The morphology modification of ZnO by HTMA is relatively novel and effectively improves gas sensing performance, providing ideas for future gas sensor testing. The modified hexagonal ZnO sensor with good acetic acid gas sensitivity achieved accurate measurement of continuous acetic acid concentration. The sensor exhibited good selectivity to acetic acid in the presence of formaldehyde, methanol, acetone, acetic acid, benzene, and xylene at 230 °C. The response and recovery time to 100 ppm acetic acid were about 32 s and 23 s, respectively. The energy band, barrier, charge transfer of Hexagonal ZnO material were discussed, and its optimization of gas sensitivity were analyzed in detail. [ABSTRACT FROM AUTHOR]

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Copyright of Rare Metals is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Rare Metals is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)