Ultrasensitive and low detection limit of nitrogen dioxide gas sensor based on flower-like ZnO hierarchical nanostructure modified by reduced graphene oxide

Liu, Jie; Li, Shan; Zhang, Bo; Xiao, Yan; Gao, Yuan; Yang, Qiuyue; Wang, Qingji; Lu, Geyu

doi:10.1016/j.snb.2017.04.190

Cited by 112 publications

(40 citation statements)

References 53 publications

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“…-Air quality monitoring (indoor and outdoor) [8,9]; -Vehicle emission monitoring [10,11]; -Alarming of leakage of toxic and hazardous gases [12]; -Personal healthcare [13]; -Medical diagnosis [14]; -Food quality monitoring [15,16], Sensors play also a key role in development and implementation of robots, automation and control systems in the factory field. By equipping robotic devices with sensors, robotic machines have become increasingly capable of performing complex and more accurate tasks, allowing manufacturers to increase efficiency, productivity, and profitability [5].…”

Section: Toward Flexible Gas Sensors Eramentioning

confidence: 99%

“…Air quality monitoring (indoor and outdoor) [8,9]; -Vehicle emission monitoring [10,11]; -Alarming of leakage of toxic and hazardous gases [12]; -Personal healthcare [13]; -Medical diagnosis [14]; -Food quality monitoring [15,16], -Agricultural and farming emission monitoring [4,17]. Figure 2 shows the trend of publications number focused on gas sensors obtained by using Scopus database [2].…”

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confidence: 99%

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Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

Fioravanti

Carotta

2020

Applied Sciences

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A review of recent advances in flexible printed gas sensors is presented. During the last years, flexible electronics has started to offer new opportunities in terms of sensors features and their possible application fields. The advent of this technology has made sensors low-cost, thin, with a large sensing area, lightweight, wearable, flexible, and transparent. Such new characteristics have led to the development of new gas sensor devices. The paper makes some statistical remarks about the research and market of the sensors and makes a shot of the printing technologies, the flexible organic substrates, the functional materials, and the target gases related to the specific application areas. The conclusion is a short notice on perspectives in the field.

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Section: Toward Flexible Gas Sensors Eramentioning

confidence: 99%

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confidence: 99%

Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

Fioravanti

Carotta

2020

Applied Sciences

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“…In this situation, reduced graphene oxide (rGO), which is graphene functionalized with different oxygen groups that provide enhanced adsorption sites, is more favorable for improving sensitivity. Besides very high thermal stability, the rGO sample contains many dangling bonds which can act as adsorption sites for gas analytes [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Single component transition metal oxide and carbon-based materials still suffer from some limitations arising from their inadequate physical and chemical characteristics that may hinder their large scale applications for high-performance gas/vapor sensors. Owing to their variable chemical conformation, synergistic properties, heterostructured nano-hybrids components, and nanocomposites are expected to show more admirable gas/vapor sensing performance [15,17].…”

Section: Introductionmentioning

confidence: 99%

“…(i) graphene derivative like GO or rGO supplies more dangling bonds and active interaction sites for gas/vapor molecule adsorption/reaction; (ii) its large effective surface area also enhance the gas sensing performance [15,16]; (iii) metal oxide nanostructures have been extensively discovered as gas/vapor sensors due to the relatively high sensitivity of their electrical conductance to the target adsorbents. Thus the presence of rGO layers on metal oxide surface, electrical properties exhibit large and fast changes in the occurrence of gases/vapors improving overall sensing performance of the sensor; (iv) while GO and rGO show ambipolar behavior in the electron and hole concentration, they show hole-dominant p-type conducting properties owing to the adsorbed water and oxygen molecular species.…”

Section: Introductionmentioning

confidence: 99%

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A Review on Metal Oxide-Graphene Derivative Nano-Composite Thin Film Gas Sensors

Hazra¹,

Samane²,

Basu³

2020

Multilayer Thin Films - Versatile Applications for Materials Engineering

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Most of the available commercial solid-state gas/vapor sensors are based on metal oxide semiconductors. Metal oxides (MOs) change their conductivity while exposed to gas or vapors ambient can be utilized as gas or vapor sensing materials. In recent days, graphene has attracted tremendous attention owing to its twodimensional structure with an extremely high surface to volume ratio, electron mobility, and thermal conductivity. However, intrinsic graphene is relatively inefficient for the adsorption of gas/vapor molecules. In this regard, graphene oxide (GO) and reduced graphene oxide (rGO), which are graphene species functionalized with different oxygen groups that offer a higher amount of adsorption sites improving the sensitivity of the film. Up to now, many research groups across the globe have reported the promising performance towards gas detection using various GO/rGO-metal oxide nanocomposites. This chapter reviews the composites of graphene oxide or reduced graphene oxide and metal oxides in nanoscale dimensions (0-D, 1-D, 2-D, and 3-D) for gas sensing applications considering two specific focus areas, that is, synthesis of nanocomposites and performance assessment for gas/vapor sensing.

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Graphene‐Based Heterostructure Composite Sensing Materials for Detection of Nitrogen‐Containing Harmful Gases

Feng

Huang

2021

Adv Funct Materials

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Graphene-based heterostructure composite is a new type of advanced sensing material that includes composites of graphene with noble metals/ metal oxides/metal sulfides/polymers and organic ligands. Exerting the synergistic effect of graphene and noble metals/metal oxides/metal sulfides/polymers and organic ligands is a new way to design advanced gas sensors for nitrogen-containing gas species including NH 3 and NO 2 to solve the problems such as poor stability, high working temperature, poor recovery, and poor selectivity. Different fabrication methods of graphenebased heterostructure composite are extensively studied, enabling massive progress in developing chemiresistive-type sensors for detecting the nitrogen-containing gas species. With the components of noble metals/ metal oxides/metal sulfides/polymers and organic ligands which are composited with graphene, each material has its attractive and unique electrical properties. Consequently, the corresponding composite formed with graphene has different sensing characteristics. Furthermore, working ambient gas and response type can affect gas-sensitive characteristic parameters of graphene-based heterostructure composite sensing materials. Moreover, it requires particular attention in studying gas sensing mechanism of graphene-based heterostructure composite sensing materials for nitrogen-containing gas species. This review focuses on related scientific issues such as material synthesis methods, sensing performance, and gas sensing mechanism to discuss the technical challenges and several perspectives.

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Ultrasensitive and low detection limit of nitrogen dioxide gas sensor based on flower-like ZnO hierarchical nanostructure modified by reduced graphene oxide

Cited by 112 publications

References 53 publications

Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

A Review on Metal Oxide-Graphene Derivative Nano-Composite Thin Film Gas Sensors

Graphene‐Based Heterostructure Composite Sensing Materials for Detection of Nitrogen‐Containing Harmful Gases

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