The influence of different ZnO nanostructures on NO2 sensing performance

Wang, Hongtao; Meng, Dong; Li, Yueyue; Bai, Jing; Liu, Yueying; Li, Yuan; Wang, Chenchang; Liu, Fengmin; Lu, Geyu

doi:10.1016/j.snb.2020.129145

Cited by 75 publications

(26 citation statements)

References 43 publications

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“…At different operating temperatures, the response of ZnO nanorods prepared by two CBD deposition is 20–40% higher than that of ZnO nanorods deposited by one CBD deposition. Wang et al successfully prepared three kinds of ZnO nanostructures (nanorods, flowers, and spheres) with different morphologies by a simple hydrothermal and water-bath method, and studied their sensing properties of NO 2 at room temperature under UV (365 nm LED) excitation, as shown in Figure 8 [ 130 ]. It was found that ZnO nanospheres have the highest response (29.4) to 5 ppm NO 2 ( Figure 8 d,e), which was mainly due to the largest specific surface area and the largest number of oxygen ions adsorbed on the surface of ZnO nanospheres.…”

Section: Metal Oxide Nanomaterials-based Gas Sensorsmentioning

confidence: 99%

“…Metal oxide-based gas sensors have the advantages of low production cost, good stability, wide application range, and easy integration with portable devices, and have been widely used in the measurement and monitoring of toxic and harmful gases [ 128 , 130 , 148 , 163 ]. However, since metal oxide-based sensors are limited by the required high operating temperature, they often bring additional energy consumption.…”

Section: 2d Materials/metal Oxide-based Gas Sensorsmentioning

confidence: 99%

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The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

et al. 2022

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Metal oxide nanoparticles have been widely utilized for the fabrication of functional gas sensors to determine various flammable, explosive, toxic, and harmful gases due to their advantages of low cost, fast response, and high sensitivity. However, metal oxide-based gas sensors reveal the shortcomings of high operating temperature, high power requirement, and low selectivity, which limited their rapid development in the fabrication of high-performance gas sensors. The combination of metal oxides with two-dimensional (2D) nanomaterials to construct a heterostructure can hybridize the advantages of each other and overcome their respective shortcomings, thereby improving the sensing performance of the fabricated gas sensors. In this review, we present recent advances in the fabrication of metal oxide-, 2D nanomaterials-, as well as 2D material/metal oxide composite-based gas sensors with highly sensitive and selective functions. To achieve this aim, we firstly introduce the working principles of various gas sensors, and then discuss the factors that could affect the sensitivity of gas sensors. After that, a lot of cases on the fabrication of gas sensors by using metal oxides, 2D materials, and 2D material/metal oxide composites are demonstrated. Finally, we summarize the current development and discuss potential research directions in this promising topic. We believe in this work is helpful for the readers in multidiscipline research fields like materials science, nanotechnology, chemical engineering, environmental science, and other related aspects.

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Section: Metal Oxide Nanomaterials-based Gas Sensorsmentioning

confidence: 99%

Section: 2d Materials/metal Oxide-based Gas Sensorsmentioning

confidence: 99%

The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

et al. 2022

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“…Researchers have studied the influence of various morphologies on the gas sensing performance of ZnO [133][134][135]. For example, Godse et al [136] prepared ZnO nanorods and investigated the sensing performance under NO 2 gas.…”

Section: Effect Of Morphology and Nanostructure Of Mos On Gas Perform...mentioning

confidence: 99%

Green Synthesis of Metal Oxides Semiconductors for Gas Sensing Applications

Dadkhah

Tulliani

2022

Sensors

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During recent decades, metal oxide semiconductors (MOS) have sparked more attention in various applications and industries due to their excellent sensing characteristics, thermal stability, abundance, and ease of synthesis. They are reliable and accurate for measuring and monitoring environmentally important toxic gases, such as NO2, NO, N2O, H2S, CO, NH3, CH4, SO2, and CO2. Compared to other sensing technologies, MOS sensors are lightweight, relatively inexpensive, robust, and have high material sensitivity with fast response times. Green nanotechnology is a developing branch of nanotechnology and aims to decrease the negative effects of the production and application of nanomaterials. For this purpose, organic solvents and chemical reagents are not used to prepare metal nanoparticles. On the contrary, the synthesis of metal or metal oxide nanoparticles is done by microorganisms, either from plant extracts or fungi, yeast, algae, and bacteria. Thus, this review aims at illustrating the possible green synthesis of different metal oxides such as ZnO, TiO2, CeO2, SnO2, In2O3, CuO, NiO, WO3, and Fe3O4, as well as metallic nanoparticles doping.

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“…ZnO, a typical n-type metal–oxide–semiconductor material, with a wide bandgap of 3.37 eV, excellent chemical stability and rich oxygen vacancies has emerged as a promising gas-sensitive material. 35–38 In particular, ZnO or ZnO composite materials have been widely applied as NO 2 sensors at room temperature in recent years. 39 This is because of the abundant defects and the feasibility of shape control of ZnO.…”

Section: Introductionmentioning

confidence: 99%

Fast and recoverable NO₂ detection achieved by assembling ZnO on Ti₃C₂T_x MXene nanosheets under UV illumination at room temperature

et al. 2022

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The influence of different ZnO nanostructures on NO2 sensing performance

Cited by 75 publications

References 43 publications

The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

Green Synthesis of Metal Oxides Semiconductors for Gas Sensing Applications

Fast and recoverable NO₂ detection achieved by assembling ZnO on Ti₃C₂T_x MXene nanosheets under UV illumination at room temperature

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The influence of different ZnO nanostructures on NO2 sensing performance

Cited by 75 publications

References 43 publications

The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

Green Synthesis of Metal Oxides Semiconductors for Gas Sensing Applications

Fast and recoverable NO2 detection achieved by assembling ZnO on Ti3C2Tx MXene nanosheets under UV illumination at room temperature

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Product

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Fast and recoverable NO₂ detection achieved by assembling ZnO on Ti₃C₂T_x MXene nanosheets under UV illumination at room temperature