Chemical-resistant ammonia sensor based on polyaniline/CuO nanoparticles supported on three-dimensional nitrogen-doped graphene-based framework nanocomposites

Tabar, Fatemeh Ahmadi; Nikfarjam, Alireza; Tavakoli, Negar; Gavgani, Jaber Nasrollah; Mahyari, Mojtaba; Hosseini, Seyed Ghorban

doi:10.1007/s00604-020-04282-y

Cited by 27 publications

(8 citation statements)

References 57 publications

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“…It has been shown that the change in the resistance of the sensor is caused by the bonding of molecules of ammonia to pyridine-like sites. Other types of nitrogen-doped carbon nanomaterials, e.g., N-doped carbon spheres [ 129 ], activated carbon [ 130 ], SWCNTs [ 131 ], and graphene [ 132 ], have also shown their efficiency in the detection of ammonia. However, there are some differences in the effect of doping on the response.…”

Section: Gas Sensors Based On Carbon Nanotubesmentioning

confidence: 99%

“…It was found that the nanocomposite had a three times higher surface area than pristine CuO, indicating that the flower-like CuO on rGO provides more adsorption sites. Nanoparticles of CuO had a valuable effect on the sensitivity of the PANI/CuO 3D-N-doped graphene nanocomposite described in [ 132 ].…”

Section: Gas Sensors Based On Graphene Graphene Oxide and Relatementioning

confidence: 99%

“…The response of B-doped graphene was 8.92% to 32 ppm NH 3 when compared to pristine graphene (2.64%) [ 199 ]. N-doped graphene is also a good potential candidate for the detection of ammonia [ 132 ].…”

Section: Gas Sensors Based On Graphene Graphene Oxide and Relatementioning

confidence: 99%

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Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

et al. 2021

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This review paper is devoted to an extended analysis of ammonia gas sensors based on carbon nanomaterials. It provides a detailed comparison of various types of active materials used for the detection of ammonia, e.g., carbon nanotubes, carbon nanofibers, graphene, graphene oxide, and related materials. Different parameters that can affect the performance of chemiresistive gas sensors are discussed. The paper also gives a comparison of the sensing characteristics (response, response time, recovery time, operating temperature) of gas sensors based on carbon nanomaterials. The results of our tests on ammonia gas sensors using various techniques are analyzed. The problems related to the recovery of sensors using various approaches are also considered. Finally, the impact of relative humidity on the sensing behavior of carbon nanomaterials of various different natures was estimated.

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Section: Gas Sensors Based On Carbon Nanotubesmentioning

confidence: 99%

Section: Gas Sensors Based On Graphene Graphene Oxide and Relatementioning

confidence: 99%

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Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

et al. 2021

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“…To improve this problem, nanoparticles can be incorporated into porous materials to construct the functional composites [102,133]. Tabar et al [134] prepared a chemical-resistant ammonia sensor based on polyaniline (PANI)/CuO nanoparticles, supported on a 3D N-doped graphene framework (NGF). The sensor has an excellent response to 100 ppm NH 3 , with an outstanding LOD down to 50 ppb.…”

Section: Pani/cuo@3d-ngfmentioning

confidence: 99%

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Dong

Xiao

Chu

et al. 2021

Sensors

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Air pollution is becoming an increasingly important global issue. Toxic gases such as ammonia, nitrogen dioxide, and volatile organic compounds (VOCs) like phenol are very common air pollutants. To date, various sensing methods have been proposed to detect these toxic gases. Researchers are trying their best to build sensors with the lowest detection limit, the highest sensitivity, and the best selectivity. As a 2D material, graphene is very sensitive to many gases and so can be used for gas sensors. Recent studies have shown that graphene with a 3D structure can increase the gas sensitivity of the sensors. The limit of detection (LOD) of the sensors can be upgraded from ppm level to several ppb level. In this review, the recent progress of the gas sensors based on 3D graphene frameworks in the detection of harmful gases is summarized and discussed.

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“…Hence, the sensitivity enhancement of these sensing materials towards humidity is challenging [ 6 ]. Very recently, doping of nanomaterials such as metal oxides (i.e., TiO 2 , ZnO, SnO 2 , Al 2 O 3 , CuO) [ 7 , 8 ], carbon-based materials (i.e., carbon nanotubes (CNTs) and graphene) [ 9 ] and hydrophilic polymers (i.e., polyethyleneimine (PEI) [ 10 ], polyethylene oxide (PEO) [ 11 ], polyvinyl alcohol (PVA) [ 12 ] and polyaniline (PANI) [ 13 ]) have been utilized as composite sensors to obtain an improved sensitivity and response time.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Humidity Sensors Based on Polyethylene Oxide/CuO/Multi Walled Carbon Nanotubes Composite Nanofibers

et al. 2021

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Polymer composites are favorite materials for sensing applications due to their low cost and easy fabrication. In the current study, composite nanofibers consisting of polyethylene oxide (PEO), oxidized multi-walled carbon nanotubes (MWCNT) and copper oxide (CuO) nanoparticles with 1% and 3% of fillers (i.e., PEO–CuO–MWCNT: 1%, and PEO–CuO–MWCNT: 3%) were successfully developed through electrospinning for humidity sensing applications. The composite nanofibers were characterized by FTIR, XRD, SEM and EDX analysis. Firstly, they were loaded on an interdigitated electrode (IDE), and then the humidity sensing efficiency was investigated through a digital LCR meter (E4980) at different frequencies (100 Hz–1MHz), as well as the percentage of relative humidity (RH). The results indicated that the composite nanofibers containing 1% and 3% MWCNT, combined with CuO in PEO polymer matrix, showed potent resistive and capacitive response along with high sensitivity to humidity at room temperature in an RH range of 30–90%. More specifically, the PEO–CuO–MWCNT: 1% nanocomposite displayed a resistive rapid response time within 3 s and a long recovery time of 22 s, while the PEO–CuO–MWCNT: 3% one exhibited 20 s and 11 s between the same RH range, respectively.

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Chemical-resistant ammonia sensor based on polyaniline/CuO nanoparticles supported on three-dimensional nitrogen-doped graphene-based framework nanocomposites

Cited by 27 publications

References 57 publications

Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Highly Sensitive Humidity Sensors Based on Polyethylene Oxide/CuO/Multi Walled Carbon Nanotubes Composite Nanofibers

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