Facile synthesis of three dimensional porous ZnO films with mesoporous walls and gas sensing properties

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2015.12.029· OSTI ID:22587104

Yu, Ling-min; Guo, Fen; Liu, Zong-yuan; Liu, Sheng; Yang, Bing; Yin, Ming-Li; Fan, Xin-hui

Controllable synthesis of 3-D mesoporous ZnO films is highly desirable for gas sensor application. Herein, we report a facile preparation of 3-D mesoporous ZnO film on Ag interdigitated electrodes substrate. The as-prepared ZnO film has a mesoporous walls ranging from 2–5 nm, as revealed by XRD, SEM, and TEM. Importantly, the as-prepared 3-D ZnO film shows an excellent ethanol gas sensing. - Graphical abstract: The detailed electron microscopy studies indicated that the as grown ZnO nanowalls exhibited a mesoporous structure composed of numerous tiny single crystals nanoparticles with an average size of 5 nm. One important issue for the application of the porous material was the specific surface area. - Highlights: • Novel three dimensional porous ZnO films with mesoporous walls were synthesized via a facile solution method. • The mesoporous ZnO nanowalls showed a high sensitivity (36.67) to 200 ppm ethanol at 285 °C. • The reason of their superior response time and changing amplitude was discussed.

• OSTI ID: 22587104
• Journal Information: Materials Characterization, Vol. 112; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
AMPLITUDES
ETHANOL
FILMS
MATHEMATICAL SOLUTIONS
MONOCRYSTALS
NANOPARTICLES
NANOSTRUCTURES
POROUS MATERIALS
SCANNING ELECTRON MICROSCOPY
SENSITIVITY
SENSORS
SUBSTRATES
THREE-DIMENSIONAL LATTICES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZINC OXIDES