Enhanced NO2 gas sensor device based on supramolecularly assembled polyaniline/silver oxide/graphene oxide composites

Ibrahim, Ahmed A.; Algadi, Hassan; Albargi, Hasan B.; Alsairi, Mabkhoot A.; Wang, Yao; Akbar, Sheikh A.

doi:10.1016/j.ceramint.2021.05.296

Cited by 37 publications

(14 citation statements)

References 69 publications

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“…Hence, the LDL of PANi/ZnO 0.5 is around 0.2 ppb, which is a remarkable value and adequate for environmental NO 2 monitoring. Table shows a comparison of the NO 2 -sensing performance of various nanocomposites reported in the literature. ,,,,− It is apparent that the performance of the PANi/ZnO 0.5 sensor is superior when compared with reported works.…”

Section: Results and Discussionmentioning

confidence: 95%

Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO₂ Gas Sensing at Room Temperature

Murugesan

Kumar

Anbalagan

et al. 2022

ACS Appl. Nano Mater.

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Chemiresistive gas sensing has attracted extensive research attention in recent years, and the facile low-cost synthesis of sensitive materials is important for realizing practical use. One feasible approach is to create a gas-sensing nanocomposite network by infusing an easily processable conducting polymer into a solution-grown interlinking metal oxide nanomaterial. In this work, a polyaniline (PANi) and ZnO nanorod (NR) composite is synthesized for selective UV-activated NO2 gas sensing at room temperature. The nanocomposite comprises interlinking ZnO NRs that are partially covered by PANi, thus forming a charge transport network with abundant gas adsorption sites. Uniform and interlinking ZnO NRs are grown on a prepatterned silicon substrate by using a hydrothermal method, and PANi is prepared by using an in situ oxidative polymerization method. A PANi/ZnO 0.5 nanocomposite with uniform morphology is obtained by drop-casting a PANi solution on the ZnO NRs. The nanocomposite exhibits selective NO2 gas toward various gases including CH2O, NO, and NH3. The responses are 130% and 20920% for 0.05 and 2.5 ppm NO2, respectively. The low-concentration linear sensitivity is 11.7% ppb–1. Based on the Langmuir adsorption model, the adsorption and the desorption constants are determined to be 7.65 × 10–3 ppm–1 s–1 and 1.07 × 10–2 s–1, respectively. The excellent gas-sensing performance of the PANi/ZnO 0.5 nanocomposite is attributed to the formation of abundant p–n heterojunction adsorption sites.

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Section: Results and Discussionmentioning

confidence: 95%

Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO₂ Gas Sensing at Room Temperature

Murugesan

Kumar

Anbalagan

et al. 2022

ACS Appl. Nano Mater.

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“…The experimental results suggested that rGO is a promising material for improving the performance of GaN-based gas sensors. Metal oxide semiconductor materials, such as ZnO [ 18 , 19 ], SnO 2 [ 20 , 21 ], CuO [ 22 , 23 ], and Ag 2 O 3 [ 24 , 25 , 26 ], have a broad range of application prospects in the field of flexible gas sensors with the advantages of a simple preparation method, a controllable morphology, environmental friendliness, a low price, and stable physical and chemical properties. Mokrushin et al [ 27 ] synthesized highly dispersed ZnO powders doped with europium and praseodymium by the solvothermal method.…”

Section: Introductionmentioning

confidence: 99%

A Flexible and Wearable Nylon Fiber Sensor Modified by Reduced Graphene Oxide and ZnO Quantum Dots for Wide-Range NO2 Gas Detection at Room Temperature

et al. 2022

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Reduced graphene oxide (rGO) fiber as a carbon-based fiber sensor has aroused widespread interest in the field of gas sensing. However, the low response value and poor flexibility of the rGO fiber sensor severely limit its application in the field of flexible wearable electronics. In this paper, a flexible and wearable nylon fiber sensor modified by rGO and ZnO quantum dots (QDs) is proposed for wide-range NO2 gas detection at room temperature. The response value of the nylon fiber sensor to 100 ppm NO2 gas is as high as 0.4958, and the response time and recovery time are 216.2 s and 667.9 s, respectively. The relationship between the sensor’s response value and the NO2 concentration value is linear in the range of 20–100 ppm, and the fitting coefficient is 0.998. In addition, the test results show that the sensor also has good repeatability, flexibility, and selectivity. Moreover, an early warning module was also designed and is proposed in this paper to realize the over-limit monitoring of NO2 gas, and the flexible sensor was embedded in a mask, demonstrating its great application potential and value in the field of wearable electronics.

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“…Silk is a typical natural fiber obtained from silkworm Bombyx mori and has been used in textile industries for centuries. Silk represents a unique family of structural proteins that are biocompatible, degradable, and mechanically superior [ 21 ]. In this research, silk was used for a substrate in PANI composite materials based on environmental stability, biocompatibility, and morphologic flexibility; therefore, fabricating a miniature, short-period and easy-to-operate at room temperature sensor is significant.…”

Section: Introductionmentioning

confidence: 99%

“…From 2013 to now, colorimetric array sensors [ 22 , 23 ], film sensors [ 24 , 25 ] and polymer sensors were fabricated to monitor meat freshness. Meanwhile, one-dimensional nanofiber sensors, based on PANI and PANI/metal composite materials, have developed for monitoring food freshness [ 21 , 26 ]. Silver nanowires are regarded as an excellent candidate because of high electrical conductivity, a large specific surface area, and low cost (as reported by Padmanaban) [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Gas Sensor for Detecting Pork Freshness Based on PANI/AgNWs/Silk

Shi

et al. 2022

Foods

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A novel, operational, reliable, flexible gas sensor based on silk fibroin fibers (SFFs) as a substrate was proposed for detecting the freshness of pork. Silk is one of the earliest animal fibers utilized by humans, and SFFs exposed many biological micromolecules on the surface. Thus, the gas sensor was fabricated through polyaniline (PANI) and silver nanowires (AgNWs) and deposited on SFFs by in-suit polymerization. With trimethylamine (TMA) as a model gas, the sensing properties of the PANI/AgNWs/silk composites were examined at room temperature, and the linear correlativity was very prominent between these sensing measures and the TMA measures in the range of 3.33 μg/L–1200 μg/L. When the pork sample is detected by the sensor, it can be classified into fresh or stale pork with the total volatile basic nitrogen (TVB-N) as an index. The result indicated that the gas sensor was effective and showed great potential for applications to detect the freshness of pork.

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Enhanced NO2 gas sensor device based on supramolecularly assembled polyaniline/silver oxide/graphene oxide composites

Cited by 37 publications

References 69 publications

Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO₂ Gas Sensing at Room Temperature

Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO₂ Gas Sensing at Room Temperature

A Flexible and Wearable Nylon Fiber Sensor Modified by Reduced Graphene Oxide and ZnO Quantum Dots for Wide-Range NO2 Gas Detection at Room Temperature

A Novel Gas Sensor for Detecting Pork Freshness Based on PANI/AgNWs/Silk

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Enhanced NO2 gas sensor device based on supramolecularly assembled polyaniline/silver oxide/graphene oxide composites

Cited by 37 publications

References 69 publications

Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO2 Gas Sensing at Room Temperature

Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO2 Gas Sensing at Room Temperature

A Flexible and Wearable Nylon Fiber Sensor Modified by Reduced Graphene Oxide and ZnO Quantum Dots for Wide-Range NO2 Gas Detection at Room Temperature

A Novel Gas Sensor for Detecting Pork Freshness Based on PANI/AgNWs/Silk

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Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO₂ Gas Sensing at Room Temperature

Interlinked Polyaniline/ZnO Nanorod Composite for Selective NO₂ Gas Sensing at Room Temperature