DataVXACS Applied Materials & InterfacesPaper
journal article·2016-04-06

Enhanced Gas Sensitivity and Selectivity on Aperture-Controllable 3D Interconnected Macro–Mesoporous ZnO Nanostructures

Jing Liu, Huawen Huang, Heng Zhao, Xiaoting Yan, Sijia Wu, Yu Li, Min Wu, Lihua Chen, Xiaoyu Yang, Bao-Lian Su

ACS Applied Materials & Interfaces· Volume 8· Issue 13
Publisher page
Source abstract

Abstract

Three-dimensional (3D) macro-mesoporous structures demonstrate effective performance for gas sensing. In this work, we have designed and successfully prepared aperture-controllable three-dimensional interconnected macro-mesoporous ZnO (3D-IMM-ZnO) nanostructures by template-based layer-by-layer filtration deposition. XRD, SEM, and TEM have been used to characterize the obtained hexagonal wurzite 3D-IMM-ZnO nanostructures. Owing to its special 3D interconnected hierarchically porous structure, the 3D-IMM-ZnO nanostructures exhibit excellent gas sensing performances toward acetone and methanol. The 3D-IMM-ZnO nanostructure with the largest macropore demonstrates the best gas sensitivity owing to its largest cavity providing enough space for gas diffusion. On the basis of the results and analyses, we propose that the synergistic effect of electron liberation and electron density of acetone and the special structure make the 3D-IMM-ZnO nanostructures demonstrate better gas sensing properties than many other porous ZnO nanostructures and preferred selectivity to acetone.
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Research context

NanomaterialsMaterials processing

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Acoustic Wave Resonator Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, Hubei, China

Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, 61 rue de Bruxelles, B-5000 Namur, Belgium

Department of Chemistry and Clare Hall, University of Cambridge, Cambridge CB2 1EW, U.K.

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Hubei Province · National Natural Science Foundation of China · Hubei Provincial Department of Education · Central People's Government of the People's Republic of China · State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology

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