3D inverse opal nanostructured multilayer films of two-component heterostructure composites: A new-generation synthetic route and potential application as high-performance acetone detector
| Autor: | Sufang Zhang, Geyu Lu, Qi Yu, Huiying Lu, Xu Yan, Xueying Kou, Tianshuang Wang, Fangmeng Liu, Peng Sun |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Detector Metals and Alloys Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Operating temperature Materials Chemistry Deposition (phase transition) Molecule Polystyrene Electrical and Electronic Engineering Composite material 0210 nano-technology Selectivity Porosity Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical. 276:262-270 |
| ISSN: | 0925-4005 |
| Popis: | The preparation of highly ordered porous semiconducting metal oxides (SMOs) films is a hot issue in the field of chemical sensor. Herein, we successfully fabricated 3D inverse opal (IO) ZnO-In2O3 composites multilayer films (MFs) via a novel strategy that combing ultrasonic nebulization deposition technique with polystyrene (PS) spheres template. Such one-step synthetic method is advantageous to achieve the construction of large-scale interconnected macro-porous (pore size: ∼170 nm) structure in composites materials, which is beneficial for facilitating gas molecule transport into the sensing layers and accelerating the surface reactions process. More significantly, by using this method, the large-scale 3D IO MFs made in this work can be easily transferred onto any target substrates without being destroyed. Due to the IO multilayer films structure and abundant heterointerfaces, the 3D IO ZnO-In2O3 MFs-based gas sensor exhibited higher response toward acetone at lower operating temperature, better selectivity and long-term stability, faster recovery speed and lower detection limit. Consequently, the approach described herein is more suitable for the synthesis of porous composites materials films, in order to fabricate high performance chemical sensor. |
| Databáze: | OpenAIRE |
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