In-situ growth of mesoporous In2O3 nanorod arrays on a porous ceramic substrate for ppb-level NO2 detection at room temperature

Abstract Mesoporous In2O3 nanorod arrays were synthesized directly on a porous ceramic substrate via a one-step hydrothermal method. The morphology and structure of the obtained In2O3 nanorod arrays were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The results revealed that In2O3 nanorod arrays with cubic phase were densely distributed on the porous ceramic substrate, showing the diameter of 120–200 nm and length of 0.5–1 μm. Especially, the nanorod was assembled by aggregated In2O3 nanoparticles with the diameters of 10–30 nm, and its large specific surface ensured the highly gas sensing performance for ppb-level NO2 detection. The response value of the mesoporous In2O3 nanorod arrays to 800 ppb NO2 was 14.9 at room temperature of 25 °C with a short response time of 14 s, and the ultraviolet light was loaded in the recovery process to shorten the recovery time to about 32 s. The growth and gas sensing mechanisms of the mesoporous In2O3 nanorod arrays were discussed. It demonstrates that this work provides a low-cost route for the fabrication of room-temperature NO2 gas sensor with high performance through in-situ growth of the sensing materials on a porous ceramic substrate.

[1]  Wei Xu,et al.  Fabrication of monodispersed hollow flower-like porous In2O3 nanostructures and their application as gas sensors , 2015 .

[2]  Nicola Donato,et al.  Photoreduction of mesoporous In2O3: mechanistic model and utility in gas sensing. , 2012, Chemistry.

[3]  Xianghong Liu,et al.  Nanostructured Materials for Room‐Temperature Gas Sensors , 2016, Advanced materials.

[4]  Chao Zhang,et al.  Role of oxygen vacancy in tuning of optical, electrical and NO2 sensing properties of ZnO1-x coatings at room temperature , 2017 .

[5]  M. Rumyantseva,et al.  UV effect on NO2 sensing properties of nanocrystalline In2O3 , 2016 .

[6]  Y. Fu,et al.  Ultra-sensitive UV and H2S dual functional sensors based on porous In2O3 nanoparticles operated at room temperature , 2019, Journal of Alloys and Compounds.

[7]  X. Cao,et al.  General wet route for the growth of regular anisotropic nanostructures on silicon substrate , 2007 .

[8]  Yafei Zhang,et al.  Light-assisted recovery for a highly-sensitive NO2 sensor based on RGO-CeO2 hybrids , 2018, Sensors and Actuators B: Chemical.

[9]  Pengfei Zhou,et al.  Design of Au@WO3 core−shell structured nanospheres for ppb-level NO2 sensing , 2019, Sensors and Actuators B: Chemical.

[10]  T. Hibino,et al.  Design of proton-conducting Sn0.95Al0.05P2O7 with a mesoporous structure , 2013 .

[11]  D. D. Meng,et al.  Micelle-assisted hydrothermal synthesis of the uniform Co3O4 nanorods and its chemoluminescence properties of CO oxidation , 2009 .

[12]  Nianwu Li,et al.  Preparation of mesoporous In2O3 nanorods via a hydrothermal-annealing method and their gas sensing properties , 2012 .

[13]  Lin Li,et al.  A smart sensor system for air quality monitoring and massive data collection , 2015, 2015 International Conference on Information and Communication Technology Convergence (ICTC).

[14]  Jianbo Sun,et al.  UV excitation NO2 gas sensor sensitized by ZnO quantum dots at room temperature , 2018 .

[15]  T. Hibino,et al.  NOx Sensing Characteristics of Semiconductor Gas Sensors under Controlled Oxygen Activity Conditions Using a Proton-Conducting Electrolyte , 2017 .

[16]  Guodong Li,et al.  Synthesis of porous In2O3 microspheres as a sensitive material for early warning of hydrocarbon explosions , 2014 .

[17]  Meng Zhang,et al.  Highly sensitive NO2 detection on ppb level by devices based on Pd-loaded In2O3 hierarchical microstructures , 2017 .

[18]  Matteo Pasquali,et al.  Room temperature gas sensing properties of ultrathin carbon nanotube films by surfactant-free dip coating , 2016 .

[19]  Xin Li,et al.  Nanosheets assembled hierarchical flower-like WO3 nanostructures: Synthesis, characterization, and their gas sensing properties , 2015 .

[20]  Chunju Li,et al.  Manipulating the Defect Structure (VO) of In2O3 Nanoparticles for Enhancement of Formaldehyde Detection. , 2018, ACS applied materials & interfaces.

[21]  Yu Du,et al.  Enhancement of NO2 gas sensing response based on ordered mesoporous Fe-doped In2O3 , 2014 .

[22]  F. Zheng,et al.  Hydrothermal synthesis of flowerlike SnO2 nanorod bundles and their application for lithium ion battery , 2013 .

[23]  A. Kumar,et al.  A smart helmet for air quality and hazardous event detection for the mining industry , 2016, 2016 IEEE International Conference on Industrial Technology (ICIT).

[24]  L. Jia,et al.  Low-Temperature and Highly Enhanced NO2 Sensing Performance of Au-Functionalized WO3 Microspheres with a Hierarchical Nanostructure , 2018, ECS Meeting Abstracts.

[25]  Changwen Hu,et al.  In2O3 Nanorod Bundles Derived from a Novel Precursor and In2O3 Nanoaggregates: Controllable Synthesis, Characterization, and Property Studies , 2010 .

[26]  D. M. Leeuw,et al.  NO2 Detection and Real-Time Sensing with Field-Effect Transistors , 2014 .

[27]  Osvaldo N. Oliveira,et al.  A review on chemiresistive room temperature gas sensors based on metal oxide nanostructures, graphene and 2D transition metal dichalcogenides , 2018, Microchimica Acta.

[28]  Y. Li,et al.  Room temperature photoelectric NO2 gas sensor based on direct growth of walnut-like In2O3 nanostructures , 2019, Journal of Alloys and Compounds.

[29]  Zhi-xuan Cheng,et al.  Porous corundum-type In2O3 nanosheets: Synthesis and NO2 sensing properties , 2015 .

[30]  D. Meng,et al.  Synthesis of WO3 flower-like hierarchical architectures and their sensing properties , 2015 .

[31]  G. Shi,et al.  Graphene-based gas sensors , 2013 .

[32]  Cong Han,et al.  NO2 sensing properties of one-pot-synthesized ZnO nanowires with Pd functionalization , 2019, Sensors and Actuators B: Chemical.

[33]  Ion Tiginyanu,et al.  Selective hydrogen gas nanosensor using individual ZnO nanowire with fast response at room temperature , 2010 .

[34]  Lingzhang Zhu,et al.  Room-temperature gas sensing of ZnO-based gas sensor: A review , 2017 .

[35]  Fanli Meng,et al.  A facile one-step hydrothermal synthesis of NiO/ZnO heterojunction microflowers for the enhanced formaldehyde sensing properties , 2018 .

[36]  Shantang Liu,et al.  In2O3-decorated ordered mesoporous NiO for enhanced NO2 sensing at room temperature , 2018, Journal of Materials Science: Materials in Electronics.

[37]  Hao Duan,et al.  Novel hydroxy polyamine surfactant N-(2-hydroxyethyl)-N-dodecyl-ethanediamine: Its synthesis and flotation performance study to quartz , 2019, Minerals Engineering.

[38]  Mingxiu Li,et al.  Synthesis of 3D flower-like ZnSnO3 and improvement of ethanol-sensing properties at room temperature based on nano-TiO2 decoration and UV radiation , 2018, Sensors and Actuators B: Chemical.

[39]  Gyudo Lee,et al.  Recent advances in carbon material-based NO2 gas sensors , 2018 .

[40]  Yosoon Choi,et al.  Review of Wearable Device Technology and Its Applications to the Mining Industry , 2018 .

[41]  N. Bârsan,et al.  Pt-In2O3 mesoporous nanofibers with enhanced gas sensing performance towards ppb-level NO2 at room temperature , 2018 .

[42]  M. Rajabi,et al.  A proposed mechanism for investigating the effect of porous silicon buffer layer on TiO 2 nanorods growth , 2016 .

[43]  Zhihua Wang,et al.  In2O3–graphene nanocomposite based gas sensor for selective detection of NO2 at room temperature , 2015 .

[44]  M. Rumyantseva,et al.  Visible light activated room temperature gas sensors based on nanocrystalline ZnO sensitized with CdSe quantum dots , 2014 .

[45]  T. Li,et al.  Effect of pore structure of the metakaolin-based porous substrate on the growth of SnO2 nanowires and their H2S sensing properties , 2019, Vacuum.

[46]  Yanbai Shen,et al.  Nitrogen dioxide sensing using tungsten oxide microspheres with hierarchical nanorod-assembled architectures by a complexing surfactant-mediated hydrothermal route , 2016 .

[47]  Pranjal Hazarika,et al.  Implementation of smart safety helmet for coal mine workers , 2016, 2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES).

[48]  Zhihua Wang,et al.  Pd loading induced excellent NO 2 gas sensing of 3DOM In 2 O 3 at room temperature , 2018, Sensors and Actuators B: Chemical.

[49]  Francesco Inchingolo,et al.  SAFE: Smart helmet for advanced factory environment , 2019, Internet Technol. Lett..

[50]  Wei Pang,et al.  Enabling selectivity and fast recovery of ZnO nanowire gas sensors through resistive switching , 2017 .

[51]  Fengmin Liu,et al.  UV-enhanced room temperature NO2 sensor using ZnO nanorods modified with SnO2 nanoparticles , 2012 .