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3D inverse opal nanostructured multilayer films of two-component heterostructure composites: A new-generation synthetic route and potential application as high-performance acetone detector.

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Title:	3D inverse opal nanostructured multilayer films of two-component heterostructure composites: A new-generation synthetic route and potential application as high-performance acetone detector.
Authors:	Wang, Tianshuang¹, Zhang, Sufang¹, Yu, Qi¹, Kou, Xueying¹, Sun, Peng¹ pengsun@jlu.edu.cn, Liu, Fangmeng¹, Lu, Huiying¹, Yan, Xu¹, Lu, Geyu¹ lugy@jlu.edu.cn
Source:	Sensors & Actuators B: Chemical. Dec2018, Vol. 276, p262-270. 9p.
Subjects:	Multilayered thin films, Heterostructures, Acetone, Gas detectors, Temperature effect
Abstract:	Graphical abstract We provide a novel and simple strategy for fabricating 3D inverse opal heterostructure composites multilayer films on target substrate and it could be used as n-n heterostructure-based gas sensor. Highlights • The 3D inverse opal (IO) ZnO-In 2 O 3 multilayer films (MFs) fabricated via a simple and effective strategy. • The large-scale 3D IO MFs can be easily transferred onto any target substrates without being destroyed. • The 3D IO ZnO-In 2 O 3 MFs sensor exhibits higher response toward acetone gas at lower operating temperature. Abstract 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-In 2 O 3 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-In 2 O 3 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. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	Graphical abstract We provide a novel and simple strategy for fabricating 3D inverse opal heterostructure composites multilayer films on target substrate and it could be used as n-n heterostructure-based gas sensor. Highlights • The 3D inverse opal (IO) ZnO-In 2 O 3 multilayer films (MFs) fabricated via a simple and effective strategy. • The large-scale 3D IO MFs can be easily transferred onto any target substrates without being destroyed. • The 3D IO ZnO-In 2 O 3 MFs sensor exhibits higher response toward acetone gas at lower operating temperature. Abstract 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-In 2 O 3 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-In 2 O 3 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. [ABSTRACT FROM AUTHOR]
ISSN:	09254005
DOI:	10.1016/j.snb.2018.07.020