Adsorption sensitivity of metal atom decorated bilayer graphene toward toxic gas molecules (CO, NO, SO2 and HCN)

Tang, Yanan; Li, Yong; Shen, Zigang; Chen, Weiguang; Ma, Dongwei; Dai, Xianqi

doi:10.1016/j.snb.2016.07.039

Cited by 115 publications

(25 citation statements)

References 91 publications

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“…Also, the adsorption energy of the N-MoS 2 -NO complex is more negative than the reported values for N and metal atom-doped graphene. 41,49 Therefore, the length of the N-O bond decreases to 1.15Å and the distance between N-MoS 2 and the NO molecule of 2.18Å shows strong binding between the adsorbate and absorbent. Next, we investigated the adsorption of two NO gas molecules on the 2N-MoS 2 monolayer and the determined adsorption energy was À0.37 eV per NO molecule.…”

Section: Resultsmentioning

confidence: 99%

Inorganic molecule (O₂, NO) adsorption on nitrogen- and phosphorus-doped MoS₂ monolayer using first principle calculations

et al. 2018

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Section: Resultsmentioning

confidence: 99%

Inorganic molecule (O₂, NO) adsorption on nitrogen- and phosphorus-doped MoS₂ monolayer using first principle calculations

et al. 2018

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“…SnO 2 was prepared via an ultrasonic depositionprecipitation method. Details of this method have been described elsewhere [10]. Brie y, for 0.05 and 0.1 wt% GO/SnO 2 nanocomposites, GO was dispersed in 0.15 M SnCl 4 aqueous solution and ammonia as the precipitating agent was added while sonicating.…”

Section: Experimental 21 Synthesis Of Sensing Materialsmentioning

confidence: 99%

“…Recently, graphene or graphene quantum dots have been utilized for fabrication of chemical gas sensors [10,11]. This is because graphene has special features such as large speci c surface area, high carrier mobility at room temperature, and low electrical noise [11].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide/SnO2 Nanocomposite as Sensing Material for Breathalyzers: Selective Detection of Ethanol in the presence of Automotive CO and Hydrocarbons Emissions

et al. 2017

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Abstract. SnO 2 was ultrasonically deposited (precipitated) in the presence of di erent amounts of graphene oxide (GO) prepared by the modi ed Hummers' method. The resulting nanocomposites were used as sensing material for the detection of 1000 ppm CO and VOCs including ethanol, acetone and toluene, and CH 4 in a temperature range of 150-300 C. The nanocomposites were characterized by Raman spectroscopy, XRD, BET surface area measurement, FT-IR, and SEM methods. It seems that SnO 2 layers were deposited on the GO surface and incorporated into the matrix. This resulted in 47% increase in the nanocomposite BET surface area. The addition of 0.1 wt% GO to SnO2 increased the response to CO by about 6 times at 300 C. 0.05 wt% GO as an optimum amount was included in SnO2 up to 2-fold enhancement in response to ethanol, and toluene was observed. At 250 C, the highest response to ethanol was obtained, which is 120, 114, 1400, and 15 times larger than the responses to CO, toluene, methane and acetone, respectively, making the sensors quite selective to ethanol. Furthermore, this sensor exhibited good response in the low concentration of ethanol.

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“…To enhance the interactions between the adsorbed gas molecule and the surface of graphene, introducing transition metal or noble metal was proved to be an effective way by theoretical evaluation. Doping Fe atom or Pt atom can obviously enhance the chemical interactions between single and double layered graphene with CO, NO, SO 2 and HCN [17]. Especially for Pt atom or nanoclusters, they can bring many active sites on the surface of graphene as well as provide many adsorption sites for gas molecules.…”

Section: Introductionmentioning

confidence: 99%

Mono- and Bi-Molecular Adsorption of SF6 Decomposition Products on Pt Doped Graphene: A First-Principles Investigation

Song

Chen

et al. 2018

Applied Sciences

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Based on the first-principles of density functional theory, the SF6 decomposition products including single molecule (SO2F2, SOF2, SO2), double homogenous molecules (2SO2F2, 2SOF2, 2SO2) and double hetero molecules (SO2 and SOF2, SO2 and SO2F2, SOF2 and SO2F2) adsorbed on Pt doped graphene were discussed. The adsorption parameters, electron transfer, electronic properties and energy gap was investigated. The adsorption of SO2, SOF2 and SO2F2 on the surface of Pt-doped graphene was a strong chemisorption process. The intensity of chemical interactions between the molecule and the Pt-graphene for the above three molecules was SO2F2 > SOF2 > SO2. The change of energy gap was also studied and according to the value of energy gap, the conductivity of Pt-graphene before and after adsorbing different gas molecules can be evaluated.

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Adsorption sensitivity of metal atom decorated bilayer graphene toward toxic gas molecules (CO, NO, SO2 and HCN)

Cited by 115 publications

References 91 publications

Inorganic molecule (O₂, NO) adsorption on nitrogen- and phosphorus-doped MoS₂ monolayer using first principle calculations

Inorganic molecule (O₂, NO) adsorption on nitrogen- and phosphorus-doped MoS₂ monolayer using first principle calculations

Graphene oxide/SnO2 Nanocomposite as Sensing Material for Breathalyzers: Selective Detection of Ethanol in the presence of Automotive CO and Hydrocarbons Emissions

Mono- and Bi-Molecular Adsorption of SF6 Decomposition Products on Pt Doped Graphene: A First-Principles Investigation

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Adsorption sensitivity of metal atom decorated bilayer graphene toward toxic gas molecules (CO, NO, SO2 and HCN)

Cited by 115 publications

References 91 publications

Inorganic molecule (O2, NO) adsorption on nitrogen- and phosphorus-doped MoS2 monolayer using first principle calculations

Inorganic molecule (O2, NO) adsorption on nitrogen- and phosphorus-doped MoS2 monolayer using first principle calculations

Graphene oxide/SnO2 Nanocomposite as Sensing Material for Breathalyzers: Selective Detection of Ethanol in the presence of Automotive CO and Hydrocarbons Emissions

Mono- and Bi-Molecular Adsorption of SF6 Decomposition Products on Pt Doped Graphene: A First-Principles Investigation

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Inorganic molecule (O₂, NO) adsorption on nitrogen- and phosphorus-doped MoS₂ monolayer using first principle calculations

Inorganic molecule (O₂, NO) adsorption on nitrogen- and phosphorus-doped MoS₂ monolayer using first principle calculations