Removal of ethyl acetylene toxic gas from environmental systems using AlN nanotube

Noei, Maziar; Ebrahimikia, Maryam; Saghapour, Yadollah; Khodaverdi, Mahnaz; Salari, Ali; Ahmadaghaei, Nastaran

doi:10.1007/s40097-015-0152-3

Cited by 43 publications

(6 citation statements)

References 22 publications

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“…N- acetylcysteine molecule before and after adsorption 71 : where , k, and T are the electrical conductivity, Boltzmann’s constant, bandgap energy and thermodynamic temperature, respectively. According to this equation, smaller HLG values lead to a larger electrical conductivity.…”

Section: Resultsmentioning

confidence: 99%

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Electro-catalytic amplified sensor for determination of N-acetylcysteine in the presence of theophylline confirmed by experimental coupled theoretical investigation

Keyvanfard

Karimi-Maleh

Karimi

et al. 2021

Sci Rep

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The 1,l/-bis(2-phenylethan-1-ol)ferrocene, 1-butyl-3-methylimidazolium hexafluoro phosphate (BMPF6) and NiO-SWCNTs were used to modify carbon paste electrode (BPOFc/BMPF6/NiO-SWCNTs/CPE), which could act as an electro-catalytic tool for the analysis of N-acetylcysteine in this work. The BPOFc/BMPF6/NiO-SWCNTs/CPE with high electrical conductivity showed two completely separate signals with oxidation potentials of 432 and 970 mV for the first time that is sufficient for the determination of N-acetylcysteine in the presence of theophylline. The BPOFc/BMPF6/NiO-SWCNTs/CPE showed linear dynamic ranges of 0.02–300.0 μM and 1.0–350.0 μM with the detection limit of ~ 8.0 nM and 0.6 μM for the measurement of N-acetylcysteine and theophylline, respectively. In the second part, understanding the nature of interaction, quantum conductance modulation, electronic properties, charge density, and adsorption behavior of N-acetylcysteine on NiO–SWCNTs surface from first-principle studies through the use of theoretical investigation is vital for designing high-performance sensor materials. The N-acetylcysteine molecule was chemisorbed on the NiO–SWCNTs surface by suitable adsorption energies (− 1.102 to − 5.042 eV) and reasonable charge transfer between N-acetylcysteine and NiO–SWCNTs.

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Section: Resultsmentioning

confidence: 99%

“…Also, the stability and electrical conductivity of sensors are exponentially related to the HOMO-LUMO gap energy70 . For that reason, the N-acetylcysteine molecule can be sensed by evaluating the change in the conductivity of the.N-acetylcysteine molecule before and after adsorption71 :…”

mentioning

confidence: 99%

Electro-catalytic amplified sensor for determination of N-acetylcysteine in the presence of theophylline confirmed by experimental coupled theoretical investigation

Keyvanfard

Karimi-Maleh

Karimi

et al. 2021

Sci Rep

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“…Therefore, phosgene content in work environments needs to be monitored using a sensitive, and precise technology in order to be controlled in the air. Till date, various nanomaterials from nanotubes to nanopowders have been proposed as sensors [5][6][7][8][9][10][11]. Since, the discovery of carbon based nanomaterials such as carbon nanotubes [12,13], fullerenes, and carbon nano cones, due to their better electric, physical [14] and mechanical properties, they are considered promising candidates for diverse applications including gas sensing [15,16].…”

Section: Introductionmentioning

confidence: 99%

Atomic ordered doping leads to enhanced sensitivity of phosgene gas detection in graphene nanoribbon: a quantum DFT approach

Deji,

Nagy,

Choudhary

et al. 2024

Phys. Scr.

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We explore a novel sensor for detection of phosgene gas by graphene derivatives such as pristine and doped graphene nanoribbons via first principles calculations. The interaction of phosgene molecule with various edge and center doped configurations of boron, phosphorus and boron-phosphorus co-doped armchair graphene nanoribbon (AGNR) and zigzag graphene nanoribbon (ZGNR) is investigated through density functional theory (DFT). P-doped systems showcase chemisorption, displaying enhanced sensitivity to phosgene detection as reflected by a more negative adsorption energy values, accompanied by a prominent charge transfer due to the doping. Regardless of nanoribbon geometry, the binding energies of P-doped systems exhibit notable uniformity within the range of -8.01eV to -8.49eV, however the adsorption energies in ZGNR are significantly lower than those observed in AGNR. Due to much higher(lower) electron-donating (accepting) capacity of phosphorous(boron) atoms in comparison to ‘C’ atom, substitutional doping with ‘P’ or ‘B’ atoms in AGNR has signifiant impact on the structural, electronic and adsorption properties of the nanoribbons. We observe that phosphorus doped configurations (edge/center) effectively interact with phosgene molecule with higher adsorption that corresponds to the chemisorption phenomenon. The strongest adsorption energy (-8.83eV) is obtained for P doped configurations, followed by that for B+P co-doped AGNR (-4.23eV). These results suggest significantly stronger adsorption of phosgene gas on P doped AGNR than on any other systems reported so far. Band structure analysis estimates that by phosphorus doping, changes in the band gap is significant and it also shows prominent changes in the band structures. Isosurface electronic charge density plots identify that the transfer of charge takes place from graphene system to phosgene molecule. Thus, significant variation in adsorption and electronic properties of P doped AGNR reveal that these geometries immensely promote the detection of phosgene gas, and may be considered as promising chemical sensor for phosgene removal.

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“…The gas sensing devices designed using various nanomaterials play a significant role in human life and environmental safety. The hybrid metal oxide gas sensors are applied to detect various poisonous gases which can impose risk to human health and environment [2]. A short-term exposure to even 500-1000 ppm of H 2 S gas can be life threatening and can cause serious harm.…”

Section: Introductionmentioning

confidence: 99%

A Highly Selective and Sensitive H2S Gas Sensor Based on Novel Nanostructure Core–Shell FeCr2O4@ZnO@MgO

Borhade

Bobade

Tope

et al. 2021

J Inorg Organomet Polym

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Gas detection is significant for controlling industrial and vehicle emission, house equipment security and environmental monitoring. Various devices are developed and designed for detection of CO 2 , CO, SO 2 , O 2 , O 3 , H 2 , NH 3 , and several other organic gases. The fabrication of FeCr 2 O 4 , FeCr 2 O 4 @ZnO, and FeCr 2 O 4 @ZnO@MgO core-shell nanostructure by sol-gel method and their gas sensing performance using thick films were reported here for the first time. The characterization was completed by means of X-ray diffraction (XRD), Infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), Energy dispersive X-ray (EDX), and Transmission electron microscopy (TEM) used for confirmation of crystal structure and their morphology. The synthesized oxides were formulated to identify various air pollutants including CO, CO 2 , Cl 2 , NH 3 , H 2 , and H 2 S. The influences of thermal annealing (300-500 °C) on the crystallization and H 2 S gas sensing performance were investigated. Among the three oxides studied, 355.08 is the sensitivity for FeCr 2 O 4 , 461.12 for FeCr 2 O 4 @ZnO and highest sensitivity was observed for FeCr 2 O 4 @ZnO@MgO core-shell sensor for H 2 S gas (500 ppm) is 597.17. The sensitivity of the measurements to relative humidity as an interfering parameter was also investigated.

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Removal of ethyl acetylene toxic gas from environmental systems using AlN nanotube

Cited by 43 publications

References 22 publications

Electro-catalytic amplified sensor for determination of N-acetylcysteine in the presence of theophylline confirmed by experimental coupled theoretical investigation

Electro-catalytic amplified sensor for determination of N-acetylcysteine in the presence of theophylline confirmed by experimental coupled theoretical investigation

Atomic ordered doping leads to enhanced sensitivity of phosgene gas detection in graphene nanoribbon: a quantum DFT approach

A Highly Selective and Sensitive H2S Gas Sensor Based on Novel Nanostructure Core–Shell FeCr2O4@ZnO@MgO

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