Understanding Interfacial Mechanics and Mechanisms of Exfoliation and Stabilization of Graphene Using Urea/Glycerol Solvents

Li, Bei; Hong, Shibo; Zhang, Xu; Xiong, Chuanxi; Zhao, Guanghui; Yang, Quanling; Liu, Hanxing

doi:10.1002/adts.201900155

Cited by 6 publications

(3 citation statements)

References 55 publications

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“…We further note that ODCB is effective in exfoliating unfunctionalized graphene to yield stable, non-aggregating dispersions [73]. Furthermore, binary solvent mixtures containing glycerol have been shown to stabilize aggregates and assist in exfoliating graphitic materials [74,75]. The Ba 2 Ca 0.66 Nb 0.68 Fe 0.33 Co 0.33 O 6−δ (BCNFCo) double perovskite oxide was prepared using a conventional solid-state method by physically mixing and sintering (1350 °C/24 h) stoichiometric amount of BaCO 3 , CaCO 3 , Nb 2 O 5 , Fe 2 O 3 , and Co 3 O 4 [76].…”

Section: Structure and Composition Of Bcnfco-cn Hybridsmentioning

confidence: 69%

Water-splitting photoelectrodes consisting of heterojunctions of carbon nitride with a p-type low bandgap double perovskite oxide

Kumar¹,

Mulmi²,

Laishram³

et al. 2021

Nanotechnology

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Quinary and senary non-stoichiometric double perovskites such as Ba 2 Ca 0.66 Nb 1.34−x Fe x O 6−δ (BCNF) have been utilized for gas sensing, solid oxide fuel cells and thermochemical CO 2 reduction. Herein, we examined their potential as narrow bandgap semiconductors for use in solar energy harvesting. A cobalt co-doped BCNF, Ba 2 Ca 0.66 Nb 0.68 Fe 0.33 Co 0.33 O 6−δ (BCNFCo), exhibited an optical absorption edge at ∼800 nm, p-type conduction and a distinct photoresponse up to 640 nm while demonstrating high thermochemical stability. A nanocomposite of BCNFCo and g-C 3 N 4 (CN) was prepared via a facile solvent-assisted exfoliation/blending approach using dichlorobenzene and glycerol at a moderate temperature. The exfoliation of g-C 3 N 4 followed by wrapping on perovskite established an effective heterojunction between the materials for charge separation. The conjugated 2D sheets of CN enabled better charge migration resulting in increased photoelectrochemical performance. A blend composed of 40 wt% perovskites and CN performed optimally, whilst achieving a photocurrent density as high as 1.5 mA cm −2 for sunlight-driven water-splitting with a Faradaic efficiency as high as ∼88%.

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Section: Structure and Composition Of Bcnfco-cn Hybridsmentioning

confidence: 69%

Water-splitting photoelectrodes consisting of heterojunctions of carbon nitride with a p-type low bandgap double perovskite oxide

Kumar¹,

Mulmi²,

Laishram³

et al. 2021

Nanotechnology

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“…OPLSA force field [71][72][73] was used in all-atom simulations. To perform these simulations, spike protein and 2D structures were placed in 10 × 10 × 10 nm 3 boxes.…”

Section: Methodsmentioning

confidence: 99%

Engineering of 2D nanomaterials to trap and kill SARS-CoV-2: a new insight from multi-microsecond atomistic simulations

Khedri

Maleki

Dahri

et al. 2021

Drug Deliv. and Transl. Res.

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In late 2019, coronavirus disease 2019 (COVID-19) was caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Spike protein is one of the surface proteins of SARS-CoV-2 that is essential for its infectious function. Therefore, it received lots of attention for the preparation of antiviral drugs, vaccines, and diagnostic tools. In the current study, we use computational methods of chemistry and biology to study the interaction between spike protein and its receptor in the body, angiotensin-I-converting enzyme-2 (ACE2). Additionally, the possible interaction of two-dimensional (2D) nanomaterials, including graphene, bismuthene, phosphorene, p-doped graphene, and functionalized p-doped graphene, with spike protein is investigated. The functionalized p-doped graphene nanomaterials were found to interfere with spike protein better than the other tested nanomaterials. In addition, the interaction of the proposed nanomaterials with the main protease (Mpro) of SARS-CoV-2 was studied. Functionalized p-doped graphene nanomaterials showed more capacity to prevent the activity of Mpro. These 2D nanomaterials efficiently reduce the transmissibility and infectivity of SARS-CoV-2 by both the deformation of the spike protein and inhibiting the Mpro. The results suggest the potential use of 2D nanomaterials in a variety of prophylactic approaches, such as masks or surface coatings, and would deserve further studies in the coming years. Graphical abstract

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“…OPLSA force eld [72][73][74] was used in all-atom simulations. To perform these simulations, spike proteins and 2D structures were placed in 10×10×10 nm 3 boxes.…”

Section: Methodsmentioning

confidence: 99%

Engineering of 2D Materials To Trap And Kill SARS-CoV-2: A New Insight From Multi-Microsecond Atomistic Simulations

Khedri

Maleki

Dahri

et al. 2021

Preprint

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In late 2019, coronavirus disease 2019 (COVID-19) caused severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Spike protein is one of the surface proteins of SARS-CoV-2 that is essential for its infectious function. Therefore, it received lots of attention for the preparation of antiviral drugs, vaccines, and diagnostic tools. Herein, we use computational methods of chemistry and biology to study the interaction between spike protein and its receptor in the body, angiotensin-I-converting enzyme-2 (ACE2). Additionally, the possible interaction of two-dimensional (2D) structures, including graphene, bismuthene, phosphorene, p-doped graphene, and functionalized p-doped graphene, with spike protein is investigated. The functionalized p-doped graphene nanosheets were found to interfere with spike protein better than the other tested nanomaterials. In addition, the interaction of the proposed nanosheets with the main protease (Mpro) of SARS-CoV-2 was studied. Functionalized p-doped graphene nanosheets showed more capacity to prevent the activity of Mpro. This 2D structure efficiently reduce the transmissibility and infectivity of SARS-CoV-2 by both the deformation of the spike protein and inhibiting the Mpro. The results suggest the potential use of 2D materials in a variety of prophylactic approaches, such as masks or surface coatings, and would deserve further studies in the coming years.

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Understanding Interfacial Mechanics and Mechanisms of Exfoliation and Stabilization of Graphene Using Urea/Glycerol Solvents

Cited by 6 publications

References 55 publications

Water-splitting photoelectrodes consisting of heterojunctions of carbon nitride with a p-type low bandgap double perovskite oxide

Water-splitting photoelectrodes consisting of heterojunctions of carbon nitride with a p-type low bandgap double perovskite oxide

Engineering of 2D nanomaterials to trap and kill SARS-CoV-2: a new insight from multi-microsecond atomistic simulations

Engineering of 2D Materials To Trap And Kill SARS-CoV-2: A New Insight From Multi-Microsecond Atomistic Simulations

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