Abstract
The porous ZnO microflowers, which looks like a flower, has been successfully prepared by a simple hydrothermal method. The structure and morphology of the samples were characterized by X-ray diffraction and Scanning electron microscopy. Meanwhile, the as-prepared samples were applied to fabricate gas sensor device, the gas sensing properties of the sensors based on porous ZnO microflowers were studied. The results indicate the ultrahigh sensitivity and excellent selectivity of Porous ZnO microflowers sensors to ethanol. The response of Porous ZnO microflowers sensor to 100 ppm ethanol is about 123 at 260 °C, which is 4.1 times larger than that of acetone (the response value is 30). The ZnO sensors can successfully distinguish acetone and ethanol which possess similar properties. The results demonstrate that the ZnO sensors have an excellent selectivity to ethanol. The response and recovery time are 4 and 12 s to 50 ppm ethanol, respectively. Moreover, the concentration of ethanol that we can detect is 0.2 ppm, and the response value is 1.65. Thus this work is confirmed that the porous ZnO microflowers sensors have a fantastic gas sensitive property for ethanol.
Similar content being viewed by others
References
W. Guo, Z. Wang, Composite of ZnO spheres and functionalized SnO2 nanofibers with an enhanced ethanol gas sensing properties. Mater. Lett. 169, 246–249 (2016)
B. Zhang et al., Synthesis and characterization of hierarchical porous SnO2 for enhancing ethanol sensing properties. Appl. Surf. Sci. 363, 560–565 (2016)
K. Anand et al., Effect of terbium doping on structural, optical and gas sensing properties of In2O3 nanoparticles. Mater. Sci. Semicond. Process. 39, 476–483 (2015)
M. Gholami et al., In2O3–ZnO nanocomposites: high sensor response and selectivity to ethanol. Sens. Actuators B Chem 212, 395–403 (2015)
J.-H. Kim et al., Growth and sensing properties of networked p-CuO nanowires. Sens. Actuators B Chem 212, 190–195 (2015)
A. Umar et al., Development of highly sensitive and selective ethanol sensor based on lance-shaped CuO nanostructures. Mater. Des. 105, 16–24 (2016)
A. Mhamdi et al., Impedance spectroscopy and sensors under ethanol vapors application of sprayed vanadium-doped ZnO compounds. J. Alloys Compd. 639, 648–658 (2015)
S. Öztürk, N. Kılınç, Pd thin films on flexible substrate for hydrogen sensor. J. Alloys Compd. 674, 179–184 (2016)
Y. Xu et al., Tunable synthesis of uniform ZnO nanospheres and their size-dependent gas sensing performance toward n-butanol. Mater. Lett. 161, 495–498 (2015)
J. Cui et al., UV-light illumination room temperature HCHO gas-sensing mechanism of ZnO with different nanostructures. Sens. Actuators B Chem. 227, 220–226 (2016)
Y. Zhu et al., In situ growth of porous ZnO nanosheet-built network film as high-performance gas sensor. Sens. Actuators B Chem. 221, 350–356 (2015)
X.H. Jiang et al., 3D porous flower-like SnO2 microstructure and its gas sensing properties for ethanol. Mater. Lett. 159, 5–8 (2015)
J. Liu et al., Hydrothermal synthesis and gas-sensing properties of flower-like Sn3O4. Sens. Actuators B Chem. 224, 128–133 (2016)
W. Zhang, W. Zeng, B. Miao, Preparation of SnO2 nanoflower with porous nanosheet via a one-step hydrothermal method. Mater. Lett. 158, 377–379 (2015)
Q. Zhou et al., Nanosheet-assembled flower-like SnO2 hierarchical structures with enhanced gas-sensing performance. Mater. Lett. 161, 499–502 (2015)
M. Jiao et al., On-chip hydrothermal growth of ZnO nanorods at low temperature for highly selective NO2 gas sensor. Mater. Lett. 169, 231–235 (2016)
N. Zhao, Z. Chen, W. Zeng, Enhanced H2S sensor based on electrospun mesoporous SnO2 nanotubes. J. Mater. Sci.: Mater. Electron. 26(11), 9152–9157 (2015)
Y. Miao et al., Preparation of flower-like ZnO architectures assembled with nanosheets for enhanced photocatalytic activity. J. Colloid Interface Sci. 462, 9–18 (2016)
S. Wei et al., Synthesis and excellent acetone sensing properties of porous WO3 nanofibers. Vacuum 124, 32–39 (2016)
L.L. Wang et al., Methanol sensing properties of honeycomb-like SnO2 grown on silicon nanoporous pillar array. J. Alloys Compd. 682, 170–175 (2016)
X. Xiang, D. Zhu, D. Wang, Enhanced formaldehyde gas sensing properties of La-doped SnO2 nanoparticles prepared by ball-milling solid chemical reaction method. J. Mater. Sci.: Mater. Electron. 27(7), 7425–7432 (2016)
T.T. Wang et al., Performance of 3D SnO2 microstructure with porous nanosheets for acetic acid sensing. Mater. Lett. 142, 141–144 (2015)
S. Hussain et al., Assembly of bulbous ZnO nanorods to bulbous nanoflowers and their high selectivity towards formaldehyde. J. Mater. Sci.: Mater. Electron. 27(5), 4966–4971 (2016)
V.K. Tomer et al., Highly sensitive and selective volatile organic amine (VOA) sensors using mesoporous WO3–SnO2 nanohybrids. Sens. Actuators B Chem. 229, 321–330 (2016)
S. Yang et al., High sensitivity and good selectivity of ultralong MoO3 nanobelts for trimethylamine gas. Sens. Actuators B Chem. 226, 478–485 (2016)
Z. Chen et al., Hydrothermal synthesis of hierarchically porous Rh-doped ZnO and its high gas sensing performance to acetone. J. Mater. Sci.: Mater. Electron. 27(3), 2633–2639 (2015)
X. Tian et al., Influence of ammonia sources on the gas sensing properties of the direct grown ZnO nanomaterials. J. Mater. Sci.: Mater. Electron. 27(5), 4711–4722 (2016)
Acknowledgments
The work has been supported by the Jilin Provincial Science and Technology Department (No. 20140204027GX).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Song, L., Li, Y., Li, S. et al. Porous ZnO microflowers with ultrahigh sensitive and selective properties to ethanol. J Mater Sci: Mater Electron 28, 652–656 (2017). https://doi.org/10.1007/s10854-016-5570-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10854-016-5570-6