In situ growth of porous ZnO nanosheet-built network film as high-performance gas sensor

Zhu, Yudong; Wang, Yingying; Duan, Guotao; Zhang, Hongwen; Li, Yue; Liu, Guangqiang; Xu, Lei; Cai, Weiping

doi:10.1016/j.snb.2015.06.115

Cited by 60 publications

(22 citation statements)

References 24 publications

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“…Other processes that use wet chemistry are also generally slow and produce undesirable reaction by‐products, which can affect the film purity and lengthen the synthesis with required purification steps. However, very few techniques have been demonstrated for porous ZnO film deposition which mainly includes chemical synthesis …”

Section: Introductionmentioning

confidence: 85%

Porous zinc oxide nanocrystalline film deposition by atmospheric pressure plasma: Fabrication and energy band estimation

Jain

Macías-Montero

Velusamy

et al. 2017

Plasma Processes & Polymers

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Porous ZnO nanocrystalline films have drawn research attention due to improvement in gas sensing, adsorption, photocatalytic, and photovoltaic applications. However, scalable synthesis of porous nanostructures has been a challenge. Here, This paper reports a very easy, fast, and scalable one‐step process for synthesis and deposition of porous ZnO nanocrystalline film by low‐temperature atmospheric pressure plasma. The plasma is generated with radio frequency power using a metallic zinc wire as a precursor. Nanostructures have been synthesized and agglomerate to form a porous film at the substrate. Energy band structure of the deposited film has been investigated to understand the corresponding band alignment, which is relevant to many applications. An in‐depth study of the grown nanostructured ZnO film has been included and characterized by X‐ray diffraction, transmission electron microscopy, X‐ray photoelectron spectroscopy, kelvin probe measurement, ultra‐violet/visible absorption, and photoluminescence.

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Section: Introductionmentioning

confidence: 85%

Porous zinc oxide nanocrystalline film deposition by atmospheric pressure plasma: Fabrication and energy band estimation

Jain

Macías-Montero

Velusamy

et al. 2017

Plasma Processes & Polymers

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“…when a gaseous hydrocarbon leaks takes place and it migrates to the environment; this would require an immediate detection procedure of hydrocarbon vapors in order to take the respectively actions to control any catastrophic accident. This section extensively reviews the recent development of porous ceramic gas sensor materials for hydrocarbon gas leaks including LPG [64,65], CH 4 [66][67][68], H 2 [69][70][71], ethanol [29,[84][85][86][87][88], methanol [89][90][91][92], and associated gases such as NO 2 [41,[73][74][75][76][77], H 2 S [78][79][80][81][82][83], and CO [72]. Basically, the discussion will be focused on the specific overlapped section between three interesting areas such as (1) porous ceramic materials, (2) hydrocarbon gas leaks detection, and (3) sensor materials giving the opportunity to explore the interesting niche area for sensing hydrocarbons and their associated gases leaks by porous ceramic materials.…”

Section: Porous Ceramic Materials (Micro-and Nano-materials) For Sensmentioning

confidence: 99%

Porous Ceramic Sensors: Hydrocarbon Gas Leaks Detection

Perera-Mercado¹,

León²,

Piñerez³

2018

Recent Advances in Porous Ceramics

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According to the American National Standards Institute (ANSI), a sensor is a device which provides a usable output in response to a specified measurement of a physical quantity converted into a signal suitable for processing (e.g., optical, electrical, or mechanical signals). On the other hand, porous ceramic materials play an important role as sensor materials, because by selecting a suitable base ceramic material for the intended use and then adjusting their overall porosity, pore size distribution, and pore shape, they can cover different applications such as liquid-gas filters, insulators, catalytic supports, mixed of gases separators and sensors, among others. In addition, they have controlled permeability, high melting point, high superficial area, high corrosion and wear resistance, low expansion coefficient, tailored electronic properties, etc. Currently, a few niche areas demand sensors for compact electronic device design, e.g., leak inspections for oil and gas dispositive, flammable and/or toxic gas detection in waste storage areas and confined spaces, hydrocarbons and their associated gas detection at low temperatures and high humidity conditions, among others. In this chapter, the advances in porous ceramic production for hydrocarbons and associated gas detection will be presented and discussed.

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“…Their highly sensitive gas sensing layer has been developed through miniaturization, providing nanoscale topology to increase surface reaction sites. A variety of sensing layer structures have been developed, such as, but not limited to, nanoparticles, nanofibers, nanorods, and nanosheets [13][14][15][16][17][18][19]. While each of these new developments has the common advantage of increasing the selectivity and sensitivity of metal oxide gas sensors, the major distinction comes from the fabrication process.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of SnO2 Composite Nanofiber-Based Gas Sensor Using the Electrospinning Method for Tetrahydrocannabinol (THC) Detection

et al. 2020

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This paper presents the development of a metal oxide semiconductor (MOS) sensor for the detection of volatile organic compounds (VOCs) which are of great importance in many applications involving either control of hazardous chemicals or noninvasive diagnosis. In this study, the sensor is fabricated based on tin dioxide (SnO2) and poly(ethylene oxide) (PEO) using electrospinning. The sensitivity of the proposed sensor is further improved by calcination and gold doping. The gold doping of composite nanofibers is achieved using sputtering, and the calcination is performed using a high-temperature oven. The performance of the sensor with different doping thicknesses and different calcination temperatures is investigated to identify the optimum fabrication parameters resulting in high sensitivity. The optimum calcination temperature and duration are found to be 350 °C and 4 h, respectively and the optimum thickness of the gold dopant is found to be 10 nm. The sensor with the optimum fabrication process is then embedded in a microchannel coated with several metallic and polymeric layers. The performance of the sensor is compared with that of a commercial sensor. The comparison is performed for methanol and a mixture of methanol and tetrahydrocannabinol (THC) which is the primary psychoactive constituent of cannabis. It is shown that the proposed sensor outperforms the commercial sensor when it is embedded inside the channel.

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In situ growth of porous ZnO nanosheet-built network film as high-performance gas sensor

Cited by 60 publications

References 24 publications

Porous zinc oxide nanocrystalline film deposition by atmospheric pressure plasma: Fabrication and energy band estimation

Porous zinc oxide nanocrystalline film deposition by atmospheric pressure plasma: Fabrication and energy band estimation

Porous Ceramic Sensors: Hydrocarbon Gas Leaks Detection

Fabrication of SnO2 Composite Nanofiber-Based Gas Sensor Using the Electrospinning Method for Tetrahydrocannabinol (THC) Detection

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