51
|
Gajare S, Jagadale M, Naikwade A, Bansode P, Patil P, Rashinkar G. An expeditious synthesis of 2,3‐dihydroquinozoline‐4(1
H
)‐ones using graphene‐supported sulfonic acid. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
| | - Megha Jagadale
- Department of ChemistryShivaji University Kolhapur India
| | | | | | - Pradnya Patil
- Department of ChemistryShivaji University Kolhapur India
| | | |
Collapse
|
52
|
Sankaran KJ, Bikkarolla SK, Desta D, Roy SS, Boyen HG, Lin IN, McLaughlin J, Haenen K. Laser-Patternable Graphene Field Emitters for Plasma Displays. NANOMATERIALS 2019; 9:nano9101493. [PMID: 31635101 PMCID: PMC6835302 DOI: 10.3390/nano9101493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 10/16/2019] [Accepted: 10/17/2019] [Indexed: 11/16/2022]
Abstract
This paper presents a plasma display device (PDD) based on laser-induced graphene nanoribbons (LIGNs), which were directly fabricated on polyimide sheets. Superior field electron emission (FEE) characteristics, viz. a low turn-on field of 0.44 V/μm and a large field enhancement factor of 4578, were achieved for the LIGNs. Utilizing LIGNs as a cathode in a PDD showed excellent plasma illumination characteristics with a prolonged plasma lifetime stability. Moreover, the LIGN cathodes were directly laser-patternable. Such superior plasma illumination performance of LIGN-based PDDs has the potential to make a significant impact on display technology.
Collapse
Affiliation(s)
| | - Santosh Kumar Bikkarolla
- School of Engineering, Engineering Research Institute, University of Ulster, Newtownabbey BT37 0QB, UK.
| | - Derese Desta
- Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium.
- IMOMEC, IMEC vzw, 3590 Diepenbeek, Belgium.
| | - Susanta Sinha Roy
- Department of Physics, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh 201314, India.
| | - Hans-Gerd Boyen
- Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium.
- IMOMEC, IMEC vzw, 3590 Diepenbeek, Belgium.
| | - I-Nan Lin
- Department of Physics, Tamkang University, Tamsui 251, Taiwan, China.
| | - James McLaughlin
- School of Engineering, Engineering Research Institute, University of Ulster, Newtownabbey BT37 0QB, UK.
| | - Ken Haenen
- Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium.
- IMOMEC, IMEC vzw, 3590 Diepenbeek, Belgium.
| |
Collapse
|
53
|
Gerber IC, Serp P. A Theory/Experience Description of Support Effects in Carbon-Supported Catalysts. Chem Rev 2019; 120:1250-1349. [DOI: 10.1021/acs.chemrev.9b00209] [Citation(s) in RCA: 274] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Iann C. Gerber
- LPCNO, Université de Toulouse, CNRS, INSA, UPS, 135 avenue de Rangueil, F-31077 Toulouse, France
| | - Philippe Serp
- LCC-CNRS, Université de Toulouse, UPR 8241 CNRS, INPT, 31400 Toulouse, France
| |
Collapse
|
54
|
Abdullah MF, Abd Rahman SF, Hashim AM. Investigation on Transition Diode Properties of rGO‐GO/n‐Si Heterojunction. PHYSICA STATUS SOLIDI (A) 2019; 216:1900064. [DOI: 10.1002/pssa.201900064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 09/02/2023]
Affiliation(s)
- Mohd Faizol Abdullah
- Malaysia‐Japan International Institute of TechnologyUniversiti Teknologi MalaysiaJalan Sultan Yahya Petra54100Kuala LumpurMalaysia
| | - Shaharin Fadzli Abd Rahman
- School of Electrical EngineeringFaculty of EngineeringUniversiti Teknologi Malaysia81310SkudaiJohorMalaysia
| | - Abdul Manaf Hashim
- Malaysia‐Japan International Institute of TechnologyUniversiti Teknologi MalaysiaJalan Sultan Yahya Petra54100Kuala LumpurMalaysia
| |
Collapse
|
55
|
Ghanbari R, Safaiee R, Sheikhi MH, Golshan MM, Horastani ZK. Graphene Decorated with Silver Nanoparticles as a Low-Temperature Methane Gas Sensor. ACS APPLIED MATERIALS & INTERFACES 2019; 11:21795-21806. [PMID: 31120237 DOI: 10.1021/acsami.9b00625] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This paper is devoted to an investigation on the methane sensing properties of graphene (G), decorated with silver nanoparticles (AgNPs), under ambient conditions. To do so, we first present an effective modification in the standard manner of decorating graphene by AgNPs. From structural analysis of the product (AgNPs/G), it is concluded that graphene is indeed decorated by AgNPs of a mean size 29.3 nm, free of aggregation, with a uniform distribution. The so-produced material is then used, as a resistivity-based sensor, to examine its response to the presence of methane gas. Our measurements are performed at relatively low temperatures, for various silver-to-graphene mass ratios (SGMRs) and methane concentrations. To account for the effects of humidity, we have made the measurements, at room temperature, for different levels of humidity. Our results demonstrate that an increase in the SGMR enhances the response of AgNPs/G to methane with an optimum value of SGMR ≅ 12%. It is also illustrated that for methane concentrations less than 2000 ppm, the maximal response increases linearly and rapidly, even at room temperature. Moreover, we demonstrate that AgNPs/G is of low limit of detection, highly stable, selective, reversible, repeatable, and sensor-to-sensor reproducible, for methane sensing. The results thus promise a low-cost and simple-to-fabricate methane sensing device.
Collapse
Affiliation(s)
| | | | | | | | - Z Karami Horastani
- Department of Electrical Engineering, Shiraz Branch , Islamic Azad University , Shiraz , Iran
| |
Collapse
|
56
|
Amaro-Gahete J, Benítez A, Otero R, Esquivel D, Jiménez-Sanchidrián C, Morales J, Caballero Á, Romero-Salguero FJ. A Comparative Study of Particle Size Distribution of Graphene Nanosheets Synthesized by an Ultrasound-Assisted Method. NANOMATERIALS 2019; 9:nano9020152. [PMID: 30691102 PMCID: PMC6409618 DOI: 10.3390/nano9020152] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/20/2019] [Accepted: 01/23/2019] [Indexed: 12/12/2022]
Abstract
Graphene-based materials are highly interesting in virtue of their excellent chemical, physical and mechanical properties that make them extremely useful as privileged materials in different industrial applications. Sonochemical methods allow the production of low-defect graphene materials, which are preferred for certain uses. Graphene nanosheets (GNS) have been prepared by exfoliation of a commercial micrographite (MG) using an ultrasound probe. Both materials were characterized by common techniques such as X-ray diffraction (XRD), Transmission Electronic Microscopy (TEM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). All of them revealed the formation of exfoliated graphene nanosheets with similar surface characteristics to the pristine graphite but with a decreased crystallite size and number of layers. An exhaustive study of the particle size distribution was carried out by different analytical techniques such as dynamic light scattering (DLS), nanoparticle tracking analysis (NTA) and asymmetric flow field flow fractionation (AF4). The results provided by these techniques have been compared. NTA and AF4 gave higher resolution than DLS. AF4 has shown to be a precise analytical technique for the separation of GNS of different sizes.
Collapse
Affiliation(s)
- Juan Amaro-Gahete
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Almudena Benítez
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Rocío Otero
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Dolores Esquivel
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - César Jiménez-Sanchidrián
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Julián Morales
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Álvaro Caballero
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Francisco J Romero-Salguero
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| |
Collapse
|
57
|
Das S, Pandey D, Thomas J, Roy T. The Role of Graphene and Other 2D Materials in Solar Photovoltaics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1802722. [PMID: 30187972 DOI: 10.1002/adma.201802722] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 06/08/2018] [Indexed: 05/24/2023]
Abstract
2D materials have attracted considerable attention due to their exciting optical and electronic properties, and demonstrate immense potential for next-generation solar cells and other optoelectronic devices. With the scaling trends in photovoltaics moving toward thinner active materials, the atomically thin bodies and high flexibility of 2D materials make them the obvious choice for integration with future-generation photovoltaic technology. Not only can graphene, with its high transparency and conductivity, be used as the electrodes in solar cells, but also its ambipolar electrical transport enables it to serve as both the anode and the cathode. 2D materials beyond graphene, such as transition-metal dichalcogenides, are direct-bandgap semiconductors at the monolayer level, and they can be used as the active layer in ultrathin flexible solar cells. However, since no 2D material has been featured in the roadmap of standard photovoltaic technologies, a proper synergy is still lacking between the recently growing 2D community and the conventional solar community. A comprehensive review on the current state-of-the-art of 2D-materials-based solar photovoltaics is presented here so that the recent advances of 2D materials for solar cells can be employed for formulating the future roadmap of various photovoltaic technologies.
Collapse
Affiliation(s)
- Sonali Das
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA
| | - Deepak Pandey
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA
- Department of Materials Science and Engineering, University of Central Florida, Orlando, FL, 32816, USA
| | - Jayan Thomas
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA
- Department of Materials Science and Engineering, University of Central Florida, Orlando, FL, 32816, USA
- College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA
| | - Tania Roy
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA
- Department of Materials Science and Engineering, University of Central Florida, Orlando, FL, 32816, USA
| |
Collapse
|
58
|
Najafi L, Taheri B, Martín-García B, Bellani S, Di Girolamo D, Agresti A, Oropesa-Nuñez R, Pescetelli S, Vesce L, Calabrò E, Prato M, Del Rio Castillo AE, Di Carlo A, Bonaccorso F. MoS 2 Quantum Dot/Graphene Hybrids for Advanced Interface Engineering of a CH 3NH 3PbI 3 Perovskite Solar Cell with an Efficiency of over 20. ACS NANO 2018; 12:10736-10754. [PMID: 30240189 DOI: 10.1021/acsnano.8b05514] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Interface engineering of organic-inorganic halide perovskite solar cells (PSCs) plays a pivotal role in achieving high power conversion efficiency (PCE). In fact, the perovskite photoactive layer needs to work synergistically with the other functional components of the cell, such as charge transporting/active buffer layers and electrodes. In this context, graphene and related two-dimensional materials (GRMs) are promising candidates to tune "on demand" the interface properties of PSCs. In this work, we fully exploit the potential of GRMs by controlling the optoelectronic properties of molybdenum disulfide (MoS2) and reduced graphene oxide (RGO) hybrids both as hole transport layer (HTL) and active buffer layer (ABL) in mesoscopic methylammonium lead iodide (CH3NH3PbI3) perovskite (MAPbI3)-based PSCs. We show that zero-dimensional MoS2 quantum dots (MoS2 QDs), derived by liquid phase exfoliated MoS2 flakes, provide both hole-extraction and electron-blocking properties. In fact, on one hand, intrinsic n-type doping-induced intraband gap states effectively extract the holes through an electron injection mechanism. On the other hand, quantum confinement effects increase the optical band gap of MoS2 (from 1.4 eV for the flakes to >3.2 eV for QDs), raising the minimum energy of its conduction band (from -4.3 eV for the flakes to -2.2 eV for QDs) above the one of the conduction band of MAPbI3 (between -3.7 and -4 eV) and hindering electron collection. The van der Waals hybridization of MoS2 QDs with functionalized reduced graphene oxide (f-RGO), obtained by chemical silanization-induced linkage between RGO and (3-mercaptopropyl)trimethoxysilane, is effective to homogenize the deposition of HTLs or ABLs onto the perovskite film, since the two-dimensional nature of RGO effectively plugs the pinholes of the MoS2 QD films. Our "graphene interface engineering" (GIE) strategy based on van der Waals MoS2 QD/graphene hybrids enables MAPbI3-based PSCs to achieve a PCE up to 20.12% (average PCE of 18.8%). The possibility to combine quantum and chemical effects into GIE, coupled with the recent success of graphene and GRMs as interfacial layer, represents a promising approach for the development of next-generation PSCs.
Collapse
Affiliation(s)
- Leyla Najafi
- Graphene Labs , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
| | - Babak Taheri
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Beatriz Martín-García
- Graphene Labs , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
| | - Sebastiano Bellani
- Graphene Labs , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
| | - Diego Di Girolamo
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Antonio Agresti
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Reinier Oropesa-Nuñez
- Graphene Labs , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
- BeDimensional Srl. , Via Albisola 121 , 16163 Genova , Italy
| | - Sara Pescetelli
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Luigi Vesce
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Emanuele Calabrò
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - Mirko Prato
- Materials Characterization Facility , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
| | | | - Aldo Di Carlo
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
- L.A.S.E.-Laboratory for Advanced Solar Energy , National University of Science and Technology "MISiS" , Leninskiy Prosect 6 , 119049 Moscow , Russia
| | - Francesco Bonaccorso
- Graphene Labs , Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
- BeDimensional Srl. , Via Albisola 121 , 16163 Genova , Italy
| |
Collapse
|
59
|
Jiang Z, Chen W, Jin L, Cui F, Song Z, Zhu C. High Performance Acetylene Sensor with Heterostructure Based on WO₃ Nanolamellae/Reduced Graphene Oxide (rGO) Nanosheets Operating at Low Temperature. NANOMATERIALS 2018; 8:nano8110909. [PMID: 30400651 PMCID: PMC6265835 DOI: 10.3390/nano8110909] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 10/24/2018] [Accepted: 11/03/2018] [Indexed: 11/16/2022]
Abstract
The development of functionalized metal oxide/reduced graphene oxide (rGO) hybrid nanocomposites concerning power equipment failure diagnosis is one of the most recent topics. In this work, WO3 nanolamellae/reduced graphene oxide (rGO) nanocomposites with different contents of GO (0.5 wt %, 1 wt %, 2 wt %, 4 wt %) were synthesized via controlled hydrothermal method. X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetric analyses-derivative thermogravimetric analysis-differential scanning calorimetry (TG-DTG-DSC), BET, and photoluminescence (PL) spectroscopy were utilized to investigate morphological characterizations of prepared gas sensing materials and indicated that high quality WO3 nanolamellae were widely distributed among graphene sheets. Experimental ceramic planar gas sensors composing of interdigitated alumina substrates, Au electrodes, and RuO2 heating layer were coated with WO3 nanolamellae/reduced graphene oxide (rGO) films by spin-coating technique and then tested for gas sensing towards multi-concentrations of acetylene (C2H2) gases in a carrier gas with operating temperature ranging from 50 °C to 400 °C. Among four contents of prepared samples, sensing materials with 1 wt % GO nanocomposite exhibited the best C2H2 sensing performance with lower optimal working temperature (150 °C), higher sensor response (15.0 toward 50 ppm), faster response-recovery time (52 s and 27 s), lower detection limitation (1.3 ppm), long-term stability, and excellent repeatability. The gas sensing mechanism for enhanced sensing performance of nanocomposite is possibly attributed to the formation of p-n heterojunction and the active interaction between WO3 nanolamellae and rGO sheets. Besides, the introduction of rGO nanosheets leads to the impurity of synthesized materials, which creates more defects and promotes larger specific area for gas adsorption, outstanding conductivity, and faster carrier transport. The superior gas sensing properties of WO3/rGO based gas sensor may contribute to the development of a high-performance ppm-level gas sensor for the online monitoring of dissolved C2H2 gas in large-scale transformer oil.
Collapse
Affiliation(s)
- Zikai Jiang
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China.
- School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
| | - Weigen Chen
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China.
- School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
| | - Lingfeng Jin
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China.
- School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
| | - Fang Cui
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China.
- School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
| | - Zihao Song
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China.
- School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
| | - Chengzhi Zhu
- State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310000, China.
| |
Collapse
|
60
|
Kim JM, Shin DH, Choi SH. Highly-flexible perovskite photodiodes employing doped multilayer-graphene transparent conductive electrodes. NANOTECHNOLOGY 2018; 29:425203. [PMID: 30070656 DOI: 10.1088/1361-6528/aad79c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We first report highly-flexible perovskite photodiodes, using AuCl3-doped multilayer-graphene transparent conducting electrodes. The doping effect of the AuCl3 is more effective when the number of layers (L n ) = 1 and 2 rather than 3 and 4, as analyzed by Raman scattering and sheet resistance. The photodiodes optimized at L n = 2 exhibit a 105 photo-/dark-current ratio, 0.4 AW-1 responsivity, 80% external quantum efficiency, 5.3 × 1010 cm Hz1/2/W detectivity, 90 dB linear dynamic range, and ∼1.1 μs response time. In addition, the photodiodes show excellent bending stabilities, maintaining a responsivity at about 70% of its initial value, even after 1000 bending cycles at a bending curvature of 4 mm.
Collapse
|
61
|
Wright ZM, Arnold AM, Holt BD, Eckhart KE, Sydlik SA. Functional Graphenic Materials, Graphene Oxide, and Graphene as Scaffolds for Bone Regeneration. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0081-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
62
|
Basith MA, Ahsan R, Zarin I, Jalil MA. Enhanced photocatalytic dye degradation and hydrogen production ability of Bi 25FeO 40-rGO nanocomposite and mechanism insight. Sci Rep 2018; 8:11090. [PMID: 30038398 PMCID: PMC6056507 DOI: 10.1038/s41598-018-29402-w] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/05/2018] [Indexed: 11/25/2022] Open
Abstract
A comprehensive comparison between BiFeO3-reduced graphene oxide (rGO) nanocomposite and Bi25FeO40-rGO nanocomposite has been performed to investigate their photocatalytic abilities in degradation of Rhodamine B dye and generation of hydrogen by water-splitting. The hydrothermal technique adapted for synthesis of the nanocomposites provides a versatile temperature-controlled phase selection between perovskite BiFeO3 and sillenite Bi25FeO40. Both perovskite and sillenite structured nanocomposites are stable and exhibit considerably higher photocatalytic ability over pure BiFeO3 nanoparticles and commercially available Degussa P25 titania. Notably, Bi25FeO40-rGO nanocomposite has demonstrated superior photocatalytic ability and stability under visible light irradiation than that of BiFeO3-rGO nanocomposite. The possible mechanism behind the superior photocatalytic performance of Bi25FeO40-rGO nanocomposite has been critically discussed.
Collapse
Affiliation(s)
- M A Basith
- Nanotechnology Research Laboratory, Department of Physics, Bangladesh University of Engineering and Technology, Dhaka, 1205, Bangladesh.
| | - Ragib Ahsan
- Nanotechnology Research Laboratory, Department of Physics, Bangladesh University of Engineering and Technology, Dhaka, 1205, Bangladesh
| | - Ishrat Zarin
- Nanotechnology Research Laboratory, Department of Physics, Bangladesh University of Engineering and Technology, Dhaka, 1205, Bangladesh
| | - M A Jalil
- Nanotechnology Research Laboratory, Department of Physics, Bangladesh University of Engineering and Technology, Dhaka, 1205, Bangladesh
| |
Collapse
|
63
|
Da Silva MKL, Plana Simões R, Cesarino I. Evaluation of Reduced Graphene Oxide Modified with Antimony and Copper Nanoparticles for Levofloxacin Oxidation. ELECTROANAL 2018. [DOI: 10.1002/elan.201800265] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Rafael Plana Simões
- Sao Paulo State University (UNESP), School of Agriculture; Botucatu, SP Brazil
| | - Ivana Cesarino
- Sao Paulo State University (UNESP), School of Agriculture; Botucatu, SP Brazil
| |
Collapse
|
64
|
Sarwat SG, Tweedie M, Porter BF, Zhou Y, Sheng Y, Mol J, Warner J, Bhaskaran H. Revealing Strain-Induced Effects in Ultrathin Heterostructures at the Nanoscale. NANO LETTERS 2018; 18:2467-2474. [PMID: 29510053 DOI: 10.1021/acs.nanolett.8b00036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two-dimensional materials are being increasingly studied, particularly for flexible and wearable technologies because of their inherent thickness and flexibility. Crucially, one aspect where our understanding is still limited is on the effect of mechanical strain, not on individual sheets of materials, but when stacked together as heterostructures in devices. In this paper, we demonstrate the use of Kelvin probe microscopy in capturing the influence of uniaxial tensile strain on the band-structures of graphene and WS2 (mono- and multilayered) based heterostructures at high resolution. We report a major advance in strain characterization tools through enabling a single-shot capture of strain defined changes in a heterogeneous system at the nanoscale, overcoming the limitations (materials, resolution, and substrate effects) of existing techniques such as optical spectroscopy. Using this technique, we observe that the work-functions of graphene and WS2 increase as a function of strain, which we attribute to the Fermi level lowering from increased p-doping. We also extract the nature of the interfacial heterojunctions and find that they get strongly modulated from strain. We observe that the strain-enhanced charge transfer with the substrate plays a dominant role, causing the heterostructures to behave differently from two-dimensional materials in their isolated forms.
Collapse
Affiliation(s)
- Syed Ghazi Sarwat
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| | - Martin Tweedie
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| | - Benjamin F Porter
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| | - Yingqiu Zhou
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| | - Yuewen Sheng
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| | - Jan Mol
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| | - Jamie Warner
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| | - Harish Bhaskaran
- Department of Materials , University of Oxford , Oxford OX1 3PH , United Kingdom
| |
Collapse
|
65
|
Kiani F, Astani NA, Rahighi R, Tayyebi A, Tayebi M, Khezri J, Hashemi E, Rothlisberger U, Simchi A. Effect of graphene oxide nanosheets on visible light-assisted antibacterial activity of vertically-aligned copper oxide nanowire arrays. J Colloid Interface Sci 2018; 521:119-131. [PMID: 29558691 DOI: 10.1016/j.jcis.2018.03.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 03/03/2018] [Accepted: 03/06/2018] [Indexed: 12/11/2022]
Abstract
In the present work, the effect of graphene oxide (GO) nanosheets on the antibacterial activity of CuO nanowire arrays under visible light irradiation is shown. A combined thermal oxidation/electrophoretic deposition technique was employed to prepare three-dimensional networks of graphene oxide nanosheets hybridized with vertically aligned CuO nanowires. With the help of standard antibacterial assays and X-ray photoelectron spectroscopy, it is shown that the light-activated antibacterial response of the hybrid material against gram-negative Escherichia coli is significantly improved as the oxide functional groups of the GO nanosheets are reduced. In order to explore the physicochemical mechanism behind this behavior, ab-initio simulations based on density functional theory were performed and the effect of surface functional groups and hybridization were elucidated. Supported by the experiments, a three-step photo-antibacterial based mechanism is suggested: (i) injection of an electron from CuO into rGO, (ii) localization of the excess electron on rGO functional groups, and (iii) release of reactive oxygen species lethal to bacteria. Activation of new photoactive and physical mechanisms in the hybrid system makes rGO-modified CuO nanowire coatings as promising nanostructure devices for antimicrobial applications in particular for dry environments.
Collapse
Affiliation(s)
- Fatemeh Kiani
- Department of Materials Science and Engineering, Sharif University of Technology, PO Box: 11365-9466, Tehran, Iran
| | - Negar Ashari Astani
- Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran
| | - Reza Rahighi
- Department of Research and Development, Sharif Ultrahigh Nanotechnologists (SUN) Company, P.O. Box: 13488-96394, Tehran, Iran
| | - Ahmad Tayyebi
- Department of Energy Engineering, Sharif University of Technology, Azadi Ave, P.O. Box: 113658639, Tehran, Iran
| | - Meysam Tayebi
- Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 9177948944, Mashhad, Iran
| | - Jafar Khezri
- National Research Center for Transgenic Mouse, National Institute of Genetic Engineering and Biotechnology, P.O. Box: 14965-161, Tehran, Iran; Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Ehsan Hashemi
- National Research Center for Transgenic Mouse, National Institute of Genetic Engineering and Biotechnology, P.O. Box: 14965-161, Tehran, Iran; Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Ursula Rothlisberger
- Laboratory of Computational Chemistry and Biochemistry (LCBC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Abdolreza Simchi
- Department of Materials Science and Engineering, Sharif University of Technology, PO Box: 11365-9466, Tehran, Iran.
| |
Collapse
|
66
|
Xinxiang S, Guang Y, Meifeng D, Mimura H, Chun L, Mang N. First principles study the effects of alkali metal and chorine adatoms on the opposite surface of graphene. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.01.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
67
|
Bulut A, Yurderi M, Kaya M, Aydemir M, Baysal A, Durap F, Zahmakiran M. Amine-functionalized graphene nanosheet-supported PdAuNi alloy nanoparticles: efficient nanocatalyst for formic acid dehydrogenation. NEW J CHEM 2018. [DOI: 10.1039/c8nj03117g] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
PdAuNi/f-GNS provides CO-free hydrogen generation from additive-free dehydrogenation of formic acid even at room temperature.
Collapse
Affiliation(s)
- Ahmet Bulut
- Nanomaterials and Catalysis Research Group
- Department of Chemistry
- Van Yuzuncu Yıl University
- Campus
- Turkey
| | - Mehmet Yurderi
- Nanomaterials and Catalysis Research Group
- Department of Chemistry
- Van Yuzuncu Yıl University
- Campus
- Turkey
| | - Murat Kaya
- Department of Chemical Engineering and Applied Chemistry
- Atilim University
- Ankara
- Turkey
| | - Murat Aydemir
- Department of Chemistry
- Dicle University
- Diyarbakır
- Turkey
| | - Akin Baysal
- Department of Chemistry
- Dicle University
- Diyarbakır
- Turkey
| | - Feyyaz Durap
- Department of Chemistry
- Dicle University
- Diyarbakır
- Turkey
| | - Mehmet Zahmakiran
- Nanomaterials and Catalysis Research Group
- Department of Chemistry
- Van Yuzuncu Yıl University
- Campus
- Turkey
| |
Collapse
|
68
|
Hua X, Ma X, Hu J, He H, Xu G, Huang C, Chen X. Controlling electronic properties of MoS2/graphene oxide heterojunctions for enhancing photocatalytic performance: the role of oxygen. Phys Chem Chem Phys 2018; 20:1974-1983. [DOI: 10.1039/c7cp07303h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The manipulation of the constituents of novel hetero-photocatalysts is an effective method for improving photocatalytic efficiency, but a theoretical understanding of the relationship between interlayer interaction and photocatalytic activity is still lacking.
Collapse
Affiliation(s)
- Xiaotian Hua
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xinguo Ma
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
| | - Jisong Hu
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
| | - Hua He
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
| | - Guowang Xu
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
| | - Chuyun Huang
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xiaobo Chen
- Department of Chemistry
- University of Missouri-Kansas City
- Kansas City
- USA
| |
Collapse
|
69
|
Ma X, Wei Y, Wei Z, He H, Huang C, Zhu Y. Probing π-π stacking modulation of g-C3N4/graphene heterojunctions and corresponding role of graphene on photocatalytic activity. J Colloid Interface Sci 2017; 508:274-281. [DOI: 10.1016/j.jcis.2017.08.037] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 02/09/2023]
|
70
|
Chen AW, Briseno AL, Santore MM. Tunable fluorescence quenching near the graphene-aqueous interface. J Colloid Interface Sci 2017; 506:76-82. [DOI: 10.1016/j.jcis.2017.07.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/04/2017] [Accepted: 07/05/2017] [Indexed: 12/28/2022]
|
71
|
Black N, Liu CG, Pearce R, Li B, Maier SA, Cohen LF, Gallop JC, Hao L. Graphene gas sensing using a non-contact microwave method. NANOTECHNOLOGY 2017; 28:395501. [PMID: 28726674 DOI: 10.1088/1361-6528/aa80f7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report a non-contact CVD graphene gas sensing method that utilises a high Q microwave dielectric resonator perturbation technique. A graphene sample is coupled to the evanescent field of a dielectric resonator whereupon nitrogen dioxide (NO2), a p-doping gas, is detected by monitoring the change in the linewidth and frequency of the resonant mode. The resonant peak shape is dependent on the number of carriers in the graphene sheet. Therefore, the linewidth perturbation can be converted to a measurement of the graphene sheet resistance. To demonstrate the strength of this technique, sensor response curves for NO2 at different concentrations and temperatures are measured showing sub ppm sensitivity. This technique eliminates interactions between the trace gas and metal contacts that otherwise effect the sensor response of the graphene device.
Collapse
Affiliation(s)
- Ncg Black
- National Physical Laboratory, Hampton Road, Teddington, TW11 0LW, United Kingdom. Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom
| | | | | | | | | | | | | | | |
Collapse
|
72
|
Harpale KV, Bansode SR, More MA. One-pot synthesis, characterization, and field emission investigations of composites of polypyrrole with graphene oxide, reduced graphene oxide, and graphene nanoribbons. J Appl Polym Sci 2017. [DOI: 10.1002/app.45170] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kashmira V. Harpale
- Centre for Advanced Studies in Material Science and Solid State Physics, Department of Physics; University of Pune; Pune 411007 India
| | - Sanjeewani R. Bansode
- Centre for Advanced Studies in Material Science and Solid State Physics, Department of Physics; University of Pune; Pune 411007 India
| | - Mahendra A. More
- Centre for Advanced Studies in Material Science and Solid State Physics, Department of Physics; University of Pune; Pune 411007 India
| |
Collapse
|
73
|
Lee EK, Park CH, Lee J, Lee HR, Yang C, Oh JH. Chemically Robust Ambipolar Organic Transistor Array Directly Patterned by Photolithography. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605282. [PMID: 28054398 DOI: 10.1002/adma.201605282] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/21/2016] [Indexed: 06/06/2023]
Abstract
Organic ambipolar transistor arrays for chemical sensors are prepared on a flexible plastic substrate with a bottom-gate bottom-contact configuration to minimize the damage to the organic semiconductors, for the first time, using a photolithographically patternable polymer semiconductor. Well-balanced ambipolar charge transport is achieved by introducing graphene electrodes because of the reduced contact resistance and energetic barrier for electron transport.
Collapse
Affiliation(s)
- Eun Kwang Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
| | - Cheol Hee Park
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Junghoon Lee
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
- Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA
| | - Hae Rang Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Changduk Yang
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
| | - Joon Hak Oh
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| |
Collapse
|
74
|
Jilani A, Othman MHD, Ansari MO, Kumar R, Alshahrie A, Ismail AF, Khan IU, Sajith VK, Barakat MA. Facile spectroscopic approach to obtain the optoelectronic properties of few-layered graphene oxide thin films and their role in photocatalysis. NEW J CHEM 2017. [DOI: 10.1039/c7nj03614k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Herein, we report the synthesis of few-layered graphene oxide (GO), reduced graphene oxide (rGO), and rGO/ZnO thin films on a glass substrate.
Collapse
Affiliation(s)
- Asim Jilani
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 UTM Johor Bahru
- Malaysia
- Center of Nanotechnology
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 UTM Johor Bahru
- Malaysia
- Faculty of Chemical and Energy Engineering
| | - Mohammad Omaish Ansari
- Center of Nanotechnology
- King Abdul-Aziz University
- 21589 Jeddah
- Saudi Arabia
- School of Chemical Engineering
| | - Rajeev Kumar
- Department of Environmental Sciences
- Faculty of Meteorology
- Environment and Arid Land Agriculture
- King Abdul-Aziz University
- Jeddah 21589
| | - Ahmed Alshahrie
- Center of Nanotechnology
- King Abdul-Aziz University
- 21589 Jeddah
- Saudi Arabia
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 UTM Johor Bahru
- Malaysia
- School of Chemical Engineering
| | - Imran Ullah Khan
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 UTM Johor Bahru
- Malaysia
- School of Chemical and Material Engineering
| | | | - M. A. Barakat
- Department of Environmental Sciences
- Faculty of Meteorology
- Environment and Arid Land Agriculture
- King Abdul-Aziz University
- Jeddah 21589
| |
Collapse
|
75
|
Mutlu Z, Ruiz I, Wu RJ, Ionescu R, Shahrezaei S, Temiz S, Ozkan M, Mkhoyan KA, Ozkan CS. Chemical vapor deposition of partially oxidized graphene. RSC Adv 2017. [DOI: 10.1039/c7ra05097f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mutlu et al. reported on chemical vapor deposition (CVD) of partially oxidized graphene films on copper foils under near-atmospheric pressure.
Collapse
Affiliation(s)
- Zafer Mutlu
- Materials Science and Engineering Program
- University of California
- Riverside
- USA
| | - Isaac Ruiz
- Department of Electrical and Computer Engineering
- University of California
- Riverside
- USA
| | - Ryan J. Wu
- Department of Chemical Engineering and Materials Science
- University of Minnesota
- Minneapolis
- USA
| | - Robert Ionescu
- Materials Science and Engineering Program
- University of California
- Riverside
- USA
| | - Sina Shahrezaei
- Materials Science and Engineering Program
- University of California
- Riverside
- USA
| | - Selcuk Temiz
- Materials Science and Engineering Program
- University of California
- Riverside
- USA
| | - Mihrimah Ozkan
- Department of Electrical and Computer Engineering
- University of California
- Riverside
- USA
| | - K. Andre Mkhoyan
- Department of Chemical Engineering and Materials Science
- University of Minnesota
- Minneapolis
- USA
| | - Cengiz S. Ozkan
- Materials Science and Engineering Program
- University of California
- Riverside
- USA
- Department of Mechanical Engineering
| |
Collapse
|
76
|
Hussain A, Ullah S, Farhan MA, Saqlain MA, Sato F. Structural, electronic, and magnetic properties of non-planar doping of BeO in graphene: a DFT study. NEW J CHEM 2017. [DOI: 10.1039/c7nj00328e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The non-planar molecular doping of BeO is more efficient in inducing a band gap relative to its planar doping with no magnetic effect realization.
Collapse
Affiliation(s)
- Akhtar Hussain
- TPD
- Pakistan Institute of Nuclear Science and Technology (PINSTECH)
- Islamabad
- Pakistan
- DNE
| | - Saif Ullah
- DNE
- Pakistan Institute of Engineering and Applied Sciences
- Islamabad
- Pakistan
| | - M. Arshad Farhan
- EMMG
- PD
- Pakistan Institute of Nuclear Science and Technology (PINSTECH)
- Islamabad
- Pakistan
| | | | - Fernando Sato
- Departamento de Física
- Instituto de Ciências Exatas
- Campus Universitário
- Universidade Federal de Juiz de Fora
- Juiz de Fora
| |
Collapse
|
77
|
Chen Y, Ma X, Li D, Wang H, Huang C. Mechanism of enhancing visible-light photocatalytic activity of BiVO4via hybridization of graphene based on a first-principles study. RSC Adv 2017. [DOI: 10.1039/c6ra25721f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The interface properties of the hybrid graphene/BiVO4(001) heterojunction were investigated by first-principle calculations incorporating semiempirical dispersion-correction schemes to describe correctly van der Waals interactions.
Collapse
Affiliation(s)
- Yuxuan Chen
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xinguo Ma
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
| | - Di Li
- School of Metallurgical Engineering
- Xi’an University of Architecture and Technology
- Xi’an 710055
- China
| | - Huihu Wang
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
- Hubei University of Technology
- Wuhan 430068
- China
| | - Chuyun Huang
- School of Science
- Hubei University of Technology
- Wuhan 430068
- China
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
| |
Collapse
|
78
|
Sharma S, Prakash V, Mehta S. Graphene/silver nanocomposites-potential electron mediators for proliferation in electrochemical sensing and SERS activity. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2016.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
79
|
Opoku F, Govender KK, van Sittert CGCE, Govender PP. Role of MoS2and WS2monolayers on photocatalytic hydrogen production and the pollutant degradation of monoclinic BiVO4: a first-principles study. NEW J CHEM 2017. [DOI: 10.1039/c7nj02340e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
MS2/m-BiVO4(010) heterostructures showed a high driving force for H2evolution and pollutant degradation under simulated visible light irradiation.
Collapse
Affiliation(s)
- Francis Opoku
- Department of Applied Chemistry
- University of Johannesburg
- Johannesburg
- South Africa
| | - Krishna Kuben Govender
- Council for Scientific and Industrial Research
- Meraka Institute
- Center for High Performance Computing
- Cape Town
- South Africa
| | | | | |
Collapse
|
80
|
Alshatwi AA, Athinarayanan J, Periasamy VS, Alatiah KA. Date Fruits-Assisted Synthesis and Biocompatibility Assessment of Nickel Oxide Nanoparticles Anchored onto Graphene Sheets for Biomedical Applications. Appl Biochem Biotechnol 2016; 181:725-734. [DOI: 10.1007/s12010-016-2244-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/12/2016] [Indexed: 12/18/2022]
|
81
|
Arezki H, Boutchich M, Alamarguy D, Madouri A, Alvarez J, Cabarrocas PRI, Kleider JP, Yao F, Hee Lee Y. Electronic properties of embedded graphene: doped amorphous silicon/CVD graphene heterostructures. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:404001. [PMID: 27506254 DOI: 10.1088/0953-8984/28/40/404001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Large-area graphene film is of great interest for a wide spectrum of electronic applications, such as field effect devices, displays, and solar cells, among many others. Here, we fabricated heterostructures composed of graphene (Gr) grown by chemical vapor deposition (CVD) on copper substrate and transferred to SiO2/Si substrates, capped by n‑ or p-type doped amorphous silicon (a-Si:H) deposited by plasma-enhanced chemical vapor deposition. Using Raman scattering we show that despite the mechanical strain induced by the a-Si:H deposition, the structural integrity of the graphene is preserved. Moreover, Hall effect measurements directly on the embedded graphene show that the electronic properties of CVD graphene can be modulated according to the doping type of the a-Si:H as well as its phase i.e. amorphous or nanocrystalline. The sheet resistance varies from 360 Ω sq(-1) to 1260 Ω sq(-1) for the (p)-a-Si:H/Gr (n)-a-Si:H/Gr, respectively. We observed a temperature independent hole mobility of up to 1400 cm(2) V(-1) s(-1) indicating that charge impurity is the principal mechanism limiting the transport in this heterostructure. We have demonstrated that embedding CVD graphene under a-Si:H is a viable route for large scale graphene based solar cells or display applications.
Collapse
Affiliation(s)
- Hakim Arezki
- GeePs, CNRS UMR8507, Centralesupelec, Univ Paris-Sud, Sorbonne Universités-UPMC Univ Paris 06, 11 rue Joliot-Curie, Plateau de Moulon, 91192 Gif-sur-Yvette Cedex, France
| | | | | | | | | | | | | | | | | |
Collapse
|
82
|
Lin TN, Inciong MR, Santiago SRMS, Yeh TW, Yang WY, Yuan CT, Shen JL, Kuo HC, Chiu CH. Photo-induced Doping in GaN Epilayers with Graphene Quantum Dots. Sci Rep 2016; 6:23260. [PMID: 26987403 PMCID: PMC4796870 DOI: 10.1038/srep23260] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 03/03/2016] [Indexed: 11/08/2022] Open
Abstract
We demonstrate a new doping scheme where photo-induced carriers from graphene quantum dots (GQDs) can be injected into GaN and greatly enhance photoluminescence (PL) in GaN epilayers. An 8.3-fold enhancement of PL in GaN is observed after the doping. On the basis of time-resolved PL studies, the PL enhancement is attributed to the carrier transfer from GQDs to GaN. Such a carrier transfer process is caused by the work function difference between GQDs and GaN, which is verified by Kelvin probe measurements. We have also observed that photocurrent in GaN can be enhanced by 23-fold due to photo-induced doping with GQDs. The improved optical and transport properties from photo-induced doping are promising for applications in GaN-based optoelectronic devices.
Collapse
Affiliation(s)
- T. N. Lin
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - M. R. Inciong
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - S. R. M. S. Santiago
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - T. W. Yeh
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - W. Y. Yang
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - C. T. Yuan
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - J. L. Shen
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - H. C. Kuo
- Department of Photonic and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsin-Chu, Taiwan
| | - C. H. Chiu
- Department of Electronic Engineering, Chung Yuan Christian University, Chung-Li, Taiwan
- Adavanced Optoelectronic Technology Inc., Hsin-Chu, Taiwan
| |
Collapse
|
83
|
Ghafuri H, Talebi M. Water-Soluble Phosphated Graphene: Preparation, Characterization, Catalytic Reactivity, and Adsorption Property. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b02250] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Hossein Ghafuri
- Catalyst
and Organic Synthesis
Research Laboratory, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran 16846-13114, Iran
| | - Majid Talebi
- Catalyst
and Organic Synthesis
Research Laboratory, Department of Chemistry, Iran University of Science and Technology (IUST), Narmak, Tehran 16846-13114, Iran
| |
Collapse
|
84
|
Sun T, Xia N, Liu L. A Graphene Oxide-Based Fluorescent Platform for Probing of Phosphatase Activity. NANOMATERIALS 2016; 6:nano6010020. [PMID: 28344277 PMCID: PMC5302530 DOI: 10.3390/nano6010020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/23/2015] [Accepted: 01/12/2016] [Indexed: 01/19/2023]
Abstract
We presented a strategy for fabricating graphene oxide (GO)-based fluorescent biosensors to monitor the change of phosphorylation state and detect phosphatase activity. By regulating the interaction between the negatively charged phosphate group and the positively charged amino residue, we found that GO showed different quenching efficiency toward the phosphorylated and dephosphorylated dye-labeled peptides. To demonstrate the application of our method, alkaline phosphatase (ALP) was tested as a model enzyme with phosphorylated fluorescein isothiocyanate (FITC)-labeled short peptide FITC-Gly-Gly-Gly-Tyr(PO₃2-)-Arg as the probe. When the negatively charged phosphate group in the Tyr residue was removed from the peptide substrate by enzymatic hydrolysis, the resulting FITC-Gly-Gly-Gly-Tyr-Arg was readily adsorbed onto the GO surface through electrostatic interaction. As a result, fluorescence quenching was observed. Furthermore, the method was applied for the screening of phosphatase inhibitors.
Collapse
Affiliation(s)
- Ting Sun
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China.
| | - Ning Xia
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China.
| | - Lin Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China.
| |
Collapse
|
85
|
Liu L, Cao Z, Wang W, Wang E, Cao Y, Zhan Z. Substrate-dependent resistance decrease of graphene by ultraviolet-ozone charge doping. RSC Adv 2016. [DOI: 10.1039/c6ra11044d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Graphene's resistance can decrease as much as 80% via UVO treatment depending on a substrates' band gap and photogenerated charge carriers.
Collapse
Affiliation(s)
- Lihui Liu
- Department of Microtechnology and Nanoscience
- Chalmers University of Technology
- Göteborg 41296
- Sweden
| | - Zhejian Cao
- Department of Microtechnology and Nanoscience
- Chalmers University of Technology
- Göteborg 41296
- Sweden
| | - Wei Wang
- Department of Microtechnology and Nanoscience
- Chalmers University of Technology
- Göteborg 41296
- Sweden
| | - Ergang Wang
- Department of Chemistry and Chemical Engineering
- Chalmers University of Technology
- Göteborg 41296
- Sweden
| | - Yu Cao
- Department of Materials and Manufacturing Technology
- Chalmers University of Technology
- Göteborg 41296
- Sweden
| | - Zhaoyao Zhan
- Department of Microtechnology and Nanoscience
- Chalmers University of Technology
- Göteborg 41296
- Sweden
| |
Collapse
|
86
|
Barrejón M, Gómez-Escalonilla MJ, Fierro JLG, Prieto P, Carrillo JR, Rodríguez AM, Abellán G, López-Escalante MC, Gabás M, López-Navarrete JT, Langa F. Modulation of the exfoliated graphene work function through cycloaddition of nitrile imines. Phys Chem Chem Phys 2016; 18:29582-29590. [DOI: 10.1039/c6cp05285a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1,3-Dipolar cycloaddition between nitrile imines and graphene is studied. The work function of functionalized-graphene depends on the nature of functionalization.
Collapse
Affiliation(s)
- Myriam Barrejón
- Universidad de Castilla-La Mancha
- Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL)
- Toledo
- Spain
| | - María J. Gómez-Escalonilla
- Universidad de Castilla-La Mancha
- Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL)
- Toledo
- Spain
| | | | - Pilar Prieto
- Departamento de Química Orgánica
- Inorgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- Campus Universitario
| | - José R. Carrillo
- Departamento de Química Orgánica
- Inorgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- Campus Universitario
| | - Antonio M. Rodríguez
- Departamento de Química Orgánica
- Inorgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- Campus Universitario
| | - Gonzalo Abellán
- Department of Chemistry and Pharmacy and Institute of Advanced Materials and Processes (ZMP)
- Friedrich Alexander University Erlangen-Nürnberg
- Henkestrasse
- 42
- 91054 Erlangen and Dr.-Mack Strasse 81
| | - Ma Cruz López-Escalante
- Unidad de Nanotecnología - The Nanotech Unit Dpto. Ingeniería Química
- Lab. Materiales & Superficies
- Universidad de Málaga
- 29071 Málaga
- Spain
| | - Mercedes Gabás
- Unidad de Nanotecnología - The Nanotech Unit Dpto. Física Aplicada I
- Lab. Materiales & Superficies
- Universidad de Málaga
- 29071 Málaga
- Spain
| | | | - Fernando Langa
- Universidad de Castilla-La Mancha
- Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL)
- Toledo
- Spain
| |
Collapse
|
87
|
Syu JY, Chen YM, Xu KX, He SM, Hung WC, Chang CL, Su CY. Wide-range work-function tuning of active graphene transparent electrodes via hole doping. RSC Adv 2016. [DOI: 10.1039/c6ra04449b] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel strategy for preparing active transparent conductive electrodes by doping LBL-stacked graphene with AuCl3, successfully achieving an extremely wide range of work-function tunability of up to ~1.5 eV.
Collapse
Affiliation(s)
- Jheng-Yuan Syu
- Graduate Institute of Energy Engineering
- National Central University
- Tao-Yuan 32001
- Taiwan
- Dep. of Mechanical Engineering
| | - Yu-Min Chen
- Dep. of Mechanical Engineering
- National Central University
- Tao-Yuan 32001
- Taiwan
| | - Kai-Xiang Xu
- Dep. of Mechanical Engineering
- National Central University
- Tao-Yuan 32001
- Taiwan
| | - Shih-Ming He
- Graduate Institute of Energy Engineering
- National Central University
- Tao-Yuan 32001
- Taiwan
| | - Wu-Ching Hung
- National Chung-Shan Institute of Science and Technology
- Tao-Yuan
- Taiwan
| | - Chien-Liang Chang
- National Chung-Shan Institute of Science and Technology
- Tao-Yuan
- Taiwan
| | - Ching-Yuan Su
- Graduate Institute of Energy Engineering
- National Central University
- Tao-Yuan 32001
- Taiwan
- Dep. of Mechanical Engineering
| |
Collapse
|
88
|
Nainani RK, Thakur P. Facile synthesis of TiO2-RGO composite with enhanced performance for the photocatalytic mineralization of organic pollutants. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:1927-1936. [PMID: 27120648 DOI: 10.2166/wst.2016.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Current research reports the synthesis of reduced graphene oxide (RGO)-TiO2 nanocomposite by in-situ redox method and graphene oxide by modified hummers method. The ratio of RGO and TiO2 in the composite was optimized to show best photocatalytic activity for the degradation of targeted pollutants. Optimized (1:10) RGO-TiO2 nanocomposite was characterized by various techniques viz. X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Brunauer-Emmett-Teller surface area (BET), Raman and diffuse reflectance spectroscopy (DRS) technique confirming successful formation of nanocomposite. XRD results confirm the presence of anatase phase in RGO-TiO2. Uniform dispersion of TiO2 nanoparticles on RGO could be seen from TEM images. The obtained results of (1:10) RGO-TiO2 showed five-fold and two-fold enhancement for the visible light and UV light, respectively, for the photocatalytic mineralization of methylene blue dye as compared to commercial Aeroxide P25 TiO2. The excellent photocatalytic mineralization activity of (1:10) RGO-TiO2 could be attributed to the enhanced surface area of composite as well as to its good electron sink capability. (1:10) RGO-TiO2 could be recycled easily and was found to be equally efficient even after the fourth cycle for the photocatalytic mineralization of methylene blue dye. The non-selectivity of synthesized composite was checked by the mineralization studies of oxalic acid.
Collapse
Affiliation(s)
- Roshan K Nainani
- Department of Chemistry, Savitribai Phule Pune University, Pune, India E-mail:
| | - Pragati Thakur
- Department of Chemistry, Savitribai Phule Pune University, Pune, India E-mail:
| |
Collapse
|
89
|
Ryu BD, Hyung JH, Han M, Kim GS, Han N, Ko KB, Kang KK, Cuong TV, Hong CH. Long-term stability of Si-organic hybrid solar cells with a thermally tunable graphene oxide platform. RSC Adv 2016. [DOI: 10.1039/c6ra12441k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The PEDOT:PSS/Si solar cell with a rGO layer enhances the stability in a package-free device as the rGO layer with various annealing temperatures plays a critical role as a passivation layer in the PEDOT:PSS/Si interface.
Collapse
Affiliation(s)
- Beo Deul Ryu
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| | - Jung-Hwan Hyung
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| | - Min Han
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| | - Gil-Sung Kim
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| | - Nam Han
- Department of Material Science and Engineering
- Pohang University of Science and Technology (POSTECH)
- Pohang
- Korea
| | - Kang Bok Ko
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| | - Ko Ku Kang
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| | - Tran Viet Cuong
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| | - Chang-Hee Hong
- School of Semiconductor and Chemical Engineering
- Semiconductor Physics Research Center
- Chonbuk National University
- Jeonju
- Korea
| |
Collapse
|
90
|
Flower-like Palladium Nanoclusters Decorated Graphene Electrodes for Ultrasensitive and Flexible Hydrogen Gas Sensing. Sci Rep 2015. [PMID: 26198416 PMCID: PMC4648453 DOI: 10.1038/srep12294] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Flower-like palladium nanoclusters (FPNCs) are electrodeposited onto graphene electrode that are prepared by chemical vapor deposition (CVD). The CVD graphene layer is transferred onto a poly(ethylene naphthalate) (PEN) film to provide a mechanical stability and flexibility. The surface of the CVD graphene is functionalized with diaminonaphthalene (DAN) to form flower shapes. Palladium nanoparticles act as templates to mediate the formation of FPNCs, which increase in size with reaction time. The population of FPNCs can be controlled by adjusting the DAN concentration as functionalization solution. These FPNCs_CG electrodes are sensitive to hydrogen gas at room temperature. The sensitivity and response time as a function of the FPNCs population are investigated, resulted in improved performance with increasing population. Furthermore, the minimum detectable level (MDL) of hydrogen is 0.1 ppm, which is at least 2 orders of magnitude lower than that of chemical sensors based on other Pd-based hybrid materials.
Collapse
|
91
|
Sygellou L, Viskadouros G, Petridis C, Kymakis E, Galiotis C, Tasis D, Stratakis E. Effect of the reduction process on the field emission performance of reduced graphene oxide cathodes. RSC Adv 2015. [DOI: 10.1039/c5ra08633g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of the reduction process and oxygen-contained functional groups on the field emission performance of reduced graphene oxide cathodes.
Collapse
Affiliation(s)
- Labrini Sygellou
- Foundation of Research and Technology Hellas
- Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT)
- RionPatras
- Greece
| | - George Viskadouros
- Foundation of Research and Technology Hellas
- Institute of Electronic Structures and Laser (FORTH/IESL)
- Heraklion Crete
- Greece
- Center of Materials Technology and Photonics & Electrical Engineering Department Technological Educational Institute (TEI) of Crete
| | - Costas Petridis
- Center of Materials Technology and Photonics & Electrical Engineering Department Technological Educational Institute (TEI) of Crete
- Heraklion 71004 Crete
- Greece
| | - Emmanuel Kymakis
- Center of Materials Technology and Photonics & Electrical Engineering Department Technological Educational Institute (TEI) of Crete
- Heraklion 71004 Crete
- Greece
| | - Costas Galiotis
- Foundation of Research and Technology Hellas
- Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT)
- RionPatras
- Greece
- Department of Chemical Engineering
| | - Dimitrios Tasis
- Foundation of Research and Technology Hellas
- Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT)
- RionPatras
- Greece
- Department of Chemistry
| | - Emmanuel Stratakis
- Foundation of Research and Technology Hellas
- Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT)
- RionPatras
- Greece
- Foundation of Research and Technology Hellas
| |
Collapse
|
92
|
Zou D, Cui B, Kong X, Zhao W, Zhao J, Liu D. Spin transport properties in lower n-acene–graphene nanojunctions. Phys Chem Chem Phys 2015; 17:11292-300. [DOI: 10.1039/c5cp00544b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of n-acene–graphene (n = 3, 4, 5, 6) devices, in which n-acene molecules are sandwiched between two zigzag graphene nanoribbon (ZGNR) electrodes, are modeled through the spin polarized density functional theory combined with the non-equilibrium Green's function technique.
Collapse
Affiliation(s)
- Dongqing Zou
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Bin Cui
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Xiangru Kong
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Wenkai Zhao
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Jingfen Zhao
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Desheng Liu
- School of Physics
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- People's Republic of China
| |
Collapse
|
93
|
Fu X, Zhao X, Yan D, Zhao D, Li J, Yang G. A facile route to prepare few-layer graphene/polyamide 6 nanocomposites by liquid reactive extrusion. RSC Adv 2015. [DOI: 10.1039/c5ra14067f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A liquid reactive extrusion process was developed to prepare graphene/polyamide 6 nanocomposites and its crystalline and mechanical properties.
Collapse
Affiliation(s)
- Xubing Fu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Xingke Zhao
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Dongguang Yan
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- China
| | - Dajiang Zhao
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
| | - Jiao Li
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- China
| | - Guisheng Yang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei
- China
- Department of Polymer Science and Engineering
| |
Collapse
|