1
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Preetha Genesh N, Dettmann D, Cui D, Che Y, Toader V, Johal TK, Fu C, Perepichka DF, Rosei F. Effect of aromatic substituents on the H-bonded assembly of diketopyrrolopyrroles at solid-liquid interfaces. NANOSCALE 2024; 16:14477-14489. [PMID: 39018156 DOI: 10.1039/d4nr00725e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
Hydrogen-bonded (H-bonded) self-assembly is a suitable approach for tailoring the solid-state packing and properties of organic semiconductors. Here we studied the H-bonded self-assembly of an important class of organic semiconductors, diketopyrrolopyrrole (DPP) derivatives, diselenophenylDPP (DSeDPP), dithiazolylDPP (DTzDPP), and dithienothiophenylDPP (DTTDPP), at solid-liquid interfaces using scanning tunneling microscopy (STM) and density functional theory (DFT). At the 1-octanoic acid/highly ordered pyrolytic graphite (HOPG) interface, DSeDPP and DTzDPP either co-assemble with the solvent via H-bonding between lactam and carboxyl groups or form homoassemblies through H-bonding between the lactam groups. However, DTTDPP forms two different homoassemblies involving H-bonding between lactam groups or weak H-bonding between the lactam group and the heteroaromatic ring. Enthalpic factors for the formation of homoassemblies and co-assemblies are investigated by evaluating the inter- and intramolecular interactions in the self-assembled lattices using DFT. A homoassembly with a twisted geometry of molecules with intermolecular π-interactions is only observed for DSeDPP. The absence of homoassembly with the twisted geometry of DTzDPP is attributed to the higher strain energy required to acquire out-of-plane twists in this molecule. Our study shows the profound effects aromatic substituents can impart in the supramolecular assembly of DPP molecules, which influences film morphology and hence its properties (e.g. charge transport).
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Affiliation(s)
- Navathej Preetha Genesh
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada.
| | - Dominik Dettmann
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada.
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, via Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Daling Cui
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Québec H3A 0B8, Canada.
| | - Yuxuan Che
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Québec H3A 0B8, Canada.
| | - Violeta Toader
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Québec H3A 0B8, Canada.
| | - Tarnjit Kaur Johal
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada.
| | - Chaoying Fu
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Huzhou 313000, China.
| | - Dmytro F Perepichka
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Québec H3A 0B8, Canada.
| | - Federico Rosei
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada.
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Alamer FA, Aldeih A, Alsalmi O, Althagafy K, Al-Dossari M. Construction of an Electrical Conductor, Strain Sensor, Electrical Connection and Cycle Switch Using Conductive Graphite Cotton Fabrics. Polymers (Basel) 2022; 14:4767. [PMID: 36365759 PMCID: PMC9655536 DOI: 10.3390/polym14214767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 10/30/2022] [Accepted: 10/31/2022] [Indexed: 01/14/2024] Open
Abstract
Researchers in science and industry are increasingly interested in conductive textiles. In this article, we have successfully prepared conductive textiles by applying a graphite dispersion to cotton fabric using a simple brush-coating-drying method and the solvents of dimethyl sulfoxide, dimethyl formamide, and a solvent mixture of both. The sheet resistance of the resulting cotton fabrics could be influenced by the type of polar solvent used to prepare the graphite dispersion and the concentration of graphite. In addition, the graphite cotton fabrics showed semiconductive behavior upon studying the resistance at different temperatures. A flexible strain sensor was fabricated using these graphite cotton fabrics for human motion detection. Most importantly, the resulting strain sensor functions even after 100 bending cycles, indicating its excellent reproducibility. In addition, our results have also shown that these graphite cotton fabrics can be used as electrical interconnects in electrical circuits without any visible degradation of the conductive cotton. Finally, a cotton electrical cycle switch was made using the graphite cotton fabrics and worked in the on and off state.
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Affiliation(s)
- Fahad Alhashmi Alamer
- Department of Physics, Faculty of Science, Umm AL-Qura University, Al Taif Road, Makkah 24382, Saudi Arabia
| | - Asal Aldeih
- Department of Physics, Faculty of Science, Umm AL-Qura University, Al Taif Road, Makkah 24382, Saudi Arabia
| | - Omar Alsalmi
- Department of Physics, Faculty of Science, Umm AL-Qura University, Al Taif Road, Makkah 24382, Saudi Arabia
| | - Khalid Althagafy
- Department of Physics, Faculty of Science, Umm AL-Qura University, Al Taif Road, Makkah 24382, Saudi Arabia
| | - Mawaheb Al-Dossari
- Department of Physics, Faculty of Applied Science, King Khalid University, Abha 62529, Saudi Arabia
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3
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Hybrid based on graphene nanoplatelets and carbon nanotubes obtained in a single‐step approach and its reinforcement effect in an epoxy matrix. J Appl Polym Sci 2022. [DOI: 10.1002/app.53227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Pérez‐Ramírez EE, Ramos‐Galicia L, de la Luz‐Asunción M, Saucedo‐Rivalcoba V, Martínez‐Hernández AL, Rubio‐Rosas E, Velasco‐Santos C. A Green and Easy Large Scale Method for Obtaining Graphene Nanoplatelets by Steam Explosion and Ultrasonic Exfoliation. ChemistrySelect 2022. [DOI: 10.1002/slct.202202425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eduardo E. Pérez‐Ramírez
- División de Estudios de Posgrado e Investigación Tecnológico Nacional de México Campus Querétaro Av. Tecnológico s/n Esq. Gral. Mariano Escobedo Col. Centro Histórico, C.P. 76000 Santiago de Querétaro México
| | - Lourdes Ramos‐Galicia
- División de Estudios de Posgrado e Investigación Tecnológico Nacional de México Campus Querétaro Av. Tecnológico s/n Esq. Gral. Mariano Escobedo Col. Centro Histórico, C.P. 76000 Santiago de Querétaro México
| | - Miguel de la Luz‐Asunción
- División de Estudios de Posgrado e Investigación Tecnológico Nacional de México Campus Querétaro Av. Tecnológico s/n Esq. Gral. Mariano Escobedo Col. Centro Histórico, C.P. 76000 Santiago de Querétaro México
| | - Verónica Saucedo‐Rivalcoba
- División de Estudios de Posgrado e Investigación Tecnológico Nacional de México – Instituto Tecnológico Superior de Tierra Blanca Av. Veracruz s/n Esq. Calle Héroes de Puebla 95180 Tierra Blanca Veracruz México
| | - Ana L. Martínez‐Hernández
- División de Estudios de Posgrado e Investigación Tecnológico Nacional de México Campus Querétaro Av. Tecnológico s/n Esq. Gral. Mariano Escobedo Col. Centro Histórico, C.P. 76000 Santiago de Querétaro México
| | - Efraín Rubio‐Rosas
- Centro Universitario de Vinculación y Transferencia de Tecnología Benemérita Universidad Autónoma de Puebla Prolongación 24 sur S/N CU San Manuel, C.P. 72570 Puebla México
| | - Carlos Velasco‐Santos
- División de Estudios de Posgrado e Investigación Tecnológico Nacional de México Campus Querétaro Av. Tecnológico s/n Esq. Gral. Mariano Escobedo Col. Centro Histórico, C.P. 76000 Santiago de Querétaro México
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Pourmadadi M, Soleimani Dinani H, Saeidi Tabar F, Khassi K, Janfaza S, Tasnim N, Hoorfar M. Properties and Applications of Graphene and Its Derivatives in Biosensors for Cancer Detection: A Comprehensive Review. BIOSENSORS 2022; 12:bios12050269. [PMID: 35624570 PMCID: PMC9138779 DOI: 10.3390/bios12050269] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 05/09/2023]
Abstract
Cancer is one of the deadliest diseases worldwide, and there is a critical need for diagnostic platforms for applications in early cancer detection. The diagnosis of cancer can be made by identifying abnormal cell characteristics such as functional changes, a number of vital proteins in the body, abnormal genetic mutations and structural changes, and so on. Identifying biomarker candidates such as DNA, RNA, mRNA, aptamers, metabolomic biomolecules, enzymes, and proteins is one of the most important challenges. In order to eliminate such challenges, emerging biomarkers can be identified by designing a suitable biosensor. One of the most powerful technologies in development is biosensor technology based on nanostructures. Recently, graphene and its derivatives have been used for diverse diagnostic and therapeutic approaches. Graphene-based biosensors have exhibited significant performance with excellent sensitivity, selectivity, stability, and a wide detection range. In this review, the principle of technology, advances, and challenges in graphene-based biosensors such as field-effect transistors (FET), fluorescence sensors, SPR biosensors, and electrochemical biosensors to detect different cancer cells is systematically discussed. Additionally, we provide an outlook on the properties, applications, and challenges of graphene and its derivatives, such as Graphene Oxide (GO), Reduced Graphene Oxide (RGO), and Graphene Quantum Dots (GQDs), in early cancer detection by nanobiosensors.
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Affiliation(s)
- Mehrab Pourmadadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 1417935840, Iran; (M.P.); (F.S.T.)
| | - Homayoon Soleimani Dinani
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA;
| | - Fatemeh Saeidi Tabar
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 1417935840, Iran; (M.P.); (F.S.T.)
| | - Kajal Khassi
- Department of Textile Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran;
| | - Sajjad Janfaza
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada; (S.J.); (N.T.)
| | - Nishat Tasnim
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada; (S.J.); (N.T.)
- School of Engineering and Computer Science, University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Mina Hoorfar
- School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada; (S.J.); (N.T.)
- School of Engineering and Computer Science, University of Victoria, Victoria, BC V8W 2Y2, Canada
- Correspondence:
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6
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Atmospheric Pressure Catalytic Vapor Deposition of Graphene on Liquid In and Cu-In Alloy Substrates. Catalysts 2021. [DOI: 10.3390/catal11111318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Liquid substrates are great candidates for the growth of high-quality graphene using chemical vapour deposition (CVD) due to their atomically flat and defect free surfaces. A detailed study of graphene growth using atmospheric pressure CVD (APCVD) on liquid indium (In) was conducted. It was found that the effect of the growth parameters on the quality of the graphene produced is highly dependent on the properties of the substrate used. A short residence time of 6.8 sec for the reactive gases led to a high graphene quality, indicating the good catalytic behaviour of In. The role of hydrogen partial pressure was found to be crucial, with monolayer and bilayer graphene films with a low defect density obtained at low PH2 (38.6 mbar), whilst more defective, thicker graphene films with a partial coverage being obtained at high PH2 (74.3 mbar). The graphene deposition was insensitive to growth time as the graphene growth on liquid In was found to self-limit to bilayer. For further investigation, five compositions of Cu-In alloys were made by arc-melting. Graphene was then grown using the optimum conditions for In and the quality of the graphene was found to degrade with increasing Cu wt.%. This work will aid the future optimisation of the growth conditions based upon the substrate’s properties.
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Abdelhalim AOE, Sharoyko VV, Ageev SV, Farafonov VS, Nerukh DA, Postnov VN, Petrov AV, Semenov KN. Graphene Oxide of Extra High Oxidation: A Wafer for Loading Guest Molecules. J Phys Chem Lett 2021; 12:10015-10024. [PMID: 34618465 DOI: 10.1021/acs.jpclett.1c02766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We present a new modification of graphene oxide with very high content (85 wt %) of oxygen-containing functional groups (hydroxy, epoxy, lactol, carboxyl, and carbonyl groups) that forms stable aqueous dispersion in up to 9 g·L-1 concentration solutions. A novel faster method of the synthesis is described that produces up to 1 kg of the material and allows controlling the particle size in solution. The synthesized compound was characterized by various physicochemical methods and molecular dynamics modeling, revealing a unique structure in the form of a multilayered wafer of several sheets thick, where each sheet is highly corrugated. The ragged structure of the sheets forms pockets with hindered mobility of water that leads to the possibility of trapping guest molecules.
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Affiliation(s)
- Abdelsattar O E Abdelhalim
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Environmental Research Department, National Center for Social and Criminological Research (NCSCR), Giza 11561, Egypt
| | - Vladimir V Sharoyko
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
- A. M. Granov Russian Research Centre for Radiology and Surgical Technologies, 70 Leningradskaya ulitsa, Saint Petersburg, 197758, Russia
| | - Sergei V Ageev
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
| | - Vladimir S Farafonov
- V. N. Karazin Kharkiv National University, 4 Svobody ploshchad', Kharkiv, 61022, Ukraine
| | - Dmitry A Nerukh
- Department of Mathematics, Aston University, Birmingham, B4 7ET, The United Kingdom
| | - Viktor N Postnov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Andrey V Petrov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Konstantin N Semenov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
- A. M. Granov Russian Research Centre for Radiology and Surgical Technologies, 70 Leningradskaya ulitsa, Saint Petersburg, 197758, Russia
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8
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Graphene, Graphene-Derivatives and Composites: Fundamentals, Synthesis Approaches to Applications. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5070181] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Graphene has accomplished huge notoriety and interest from the universe of science considering its exceptional mechanical physical and thermal properties. Graphene is an allotrope of carbon having one atom thick size and planar sheets thickly stuffed in a lattice structure resembling a honeycomb structure. Numerous methods to prepare graphene have been created throughout a limited span of time. Due to its fascinating properties, it has found some extensive applications to a wide variety of fields. So, we believe there is a necessity to produce a document of the outstanding methods and some of the novel applications of graphene. This article centres around the strategies to orchestrate graphene and its applications in an attempt to sum up the advancements that has taken place in the research of graphene.
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Hu CX, Shin Y, Read O, Casiraghi C. Dispersant-assisted liquid-phase exfoliation of 2D materials beyond graphene. NANOSCALE 2021; 13:460-484. [PMID: 33404043 DOI: 10.1039/d0nr05514j] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The extensive research on liquid-phase exfoliation (LPE) performed in the last 10 years has enabled a low cost and mass scalable approach to the successful production of a range of solution-processed 2-dimensional (2D) materials suitable for many applications, from composites to energy storage and printed electronics. However, direct LPE requires the use of specific solvents, which are typically toxic and expensive. Dispersant-assisted LPE allows us to overcome this problem by enabling production of solution processed 2D materials in a wider range of solvents, including water. This approach is based on the inclusion of an additive, typically an amphiphilic molecule, designed to interact with both the nanosheet and the solvent, enabling exfoliation and stabilization at the same time. This method has been extensively used for the LPE of graphene and has been discussed in many reviews, whilst little attention has been given to dispersant-assisted LPE of 2D materials beyond graphene. Considering the increasing number of 2D materials and their potential in many applications, from nanomedicine to energy storage and catalysis, this review focuses on the dispersant-assisted LPE of transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN) and less studied 2D materials. We first provide an introduction to the fundamentals of LPE and the type of dispersants that have been used for the production of graphene, we then discuss each class of 2D material, providing an overview on the concentration and properties of the nanosheets obtained. Finally, a perspective is given on some of the challenges that need to be addressed in this field of research.
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Affiliation(s)
- Chen-Xia Hu
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
| | - Yuyoung Shin
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
| | - Oliver Read
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
| | - Cinzia Casiraghi
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
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10
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Atmospheric Pressure Catalytic Vapor Deposition of Graphene on Liquid Sn and Cu-Sn Alloy Substrates. NANOMATERIALS 2020; 10:nano10112150. [PMID: 33126626 PMCID: PMC7692589 DOI: 10.3390/nano10112150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/15/2020] [Accepted: 10/23/2020] [Indexed: 01/04/2023]
Abstract
The chemical vapor deposition (CVD) of graphene on liquid substrates produces high quality graphene films due to the defect-free and atomically flat surfaces of the liquids. Through the detailed study of graphene growth on liquid Sn using atmospheric pressure CVD (APCVD), the quality of graphene has been found to have a close relationship with hydrogen flow rate that reflects on hydrogen partial pressure inside the reactor (PH2) and hydrogen solubility of the growth substrates. The role of PH2 was found to be crucial, with a low defect density monolayer graphene being obtained in low PH2 (90.4 mbar), while partial graphene coverage occurred at high PH2 (137.3 mbar). To further understand the role of substrate’s composition, binary alloy with compositions of 20, 30, 50, 60 and 80 wt.% tin in copper were made by arc-melting. Graphene quality was found to decrease with increasing the content of copper in the Cu–Sn alloys when grown using the conditions optimised for Sn substrates and this was related to the change in hydrogen solubility and the high catalytic activity of Cu compared to Sn. This shall provide a tool to help optimising CVD conditions for graphene growth based on the properties of the used catalytic substrate.
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11
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Recent advancements in graphene adsorbents for wastewater treatment: Current status and challenges. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.05.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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12
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White DL, Lystrom L, He X, Burkert SC, Kilin DS, Kilina S, Star A. Synthesis of Holey Graphene Nanoparticle Compounds. ACS APPLIED MATERIALS & INTERFACES 2020; 12:36513-36522. [PMID: 32672929 DOI: 10.1021/acsami.0c09394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bulk-scale syntheses of sp2 nanocarbon have typically been generated by extensive chemical oxidation to yield graphite oxide from graphite, followed by a reductive step. Materials generated via harsh random processes lose desirable physical characteristics. Loss of sp2 conjugation inhibits long-range electronic transport and the potential for electronic band manipulation. Here, we present a nanopatterned holey graphene material electronically hybridized with metal-containing nanoparticles. Oxidative plasma etching of highly ordered pyrolytic graphite via previously developed covalent organic framework (COF)-5-templated patterning yields bulk-scale materials for electrocatalytic applications and fundamental investigations into band structure engineering of nanocomposites. We establish a broad ability (Ag, Au, Cu, and Ni) to grow metal-containing nanoparticles in patterned holes in a metal precursor-dependent manner without a reducing agent. Graphene nanoparticle compounds (GNCs) show metal-contingent changes in the valence band structure. Density functional theory investigations reveal preferences for uncharged metal states, metal contributions to the valence band, and embedding of nanoparticles over surface incorporation. Ni-GNCs show activity for oxygen evolution reaction in alkaline media (1 M KOH). Electrocatalytic activity exceeds 10,000 mA/mg of Ni, shows stability for 2 h of continuous operation, and is kinetically consistent via a Tafel slope with Ni(OH)2-based catalysis.
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Affiliation(s)
- David L White
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Levi Lystrom
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58102, United States
| | - Xiaoyun He
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Seth C Burkert
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Dmitri S Kilin
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58102, United States
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58102, United States
| | - Alexander Star
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
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Kapoor S, Jha A, Ahmad H, Islam SS. Avenue to Large-Scale Production of Graphene Quantum Dots from High-Purity Graphene Sheets Using Laboratory-Grade Graphite Electrodes. ACS OMEGA 2020; 5:18831-18841. [PMID: 32775885 PMCID: PMC7408250 DOI: 10.1021/acsomega.0c01993] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/09/2020] [Indexed: 05/24/2023]
Abstract
Graphene has unprecedented physical, chemical, and electronic properties, but need of the hour is to develop low-dimensional nanomaterials, such as graphene quantum dots (GQDs), that could be incorporated into nanoscale devices. This article depicts the production of GQDs from ultrafine, thin (0.8-1 nm), bilayer graphene sheets (GSs) possessing large micron-sized lateral dimension, low defect density (I D/I G: 0.1), and oxidation degree (C/O ratio: 27) of lowest level, in contrast to many other techniques where synthesis of GSs was done using analytical-grade expensive graphite electrodes. This low-cost manufacturing of GSs for industrial-scale applications was achieved by utilizing only 99%-purity graphite electrodes. The variants of such graphite electrodes (graphite rod, film, pencil) are etched in different pH electrolytes (H2SO4, NaCl, NaOH) via prompt electrochemical exfoliation, each giving more than 50% yield. Nowadays, semiconductor quantum dots (QDs) are utilized in smart device production industries, but their toxicity is a major issue of concern. Therefore, the dimension of this two-dimensional (2D) material is reduced to <10 nm to generate GQDs. A facile and highly reproducible approach has been reported for the large-scale generation of GQDs (size ca. 6-10 nm) with minimal surface defects. The protocol followed in this article to synthesize GQDs involves the use of ethylenediamine (en), which passivates the surface and reduces defects, thereby enhancing the optical properties. We demonstrate the correlation of the electrochemical and hydrothermal parameters with the growth mechanism and morphological, structural, chemical, and optical properties of the graphene nanomaterials. Raman spectroscopy and X-ray diffraction (XRD) reveal the structural configurations of GSs and GQDs to investigate the nature of defects. Field emission scanning electron microscopy (FESEM) confirms the morphological characteristics of the as-prepared GSs and GQDs with energy-dispersive X-ray (EDX) analysis determining the C/O ratio. The optical properties like UV-visible absorption and fluorescence assays show the quantum confinement effect phenomenon in GQDs. The obtained GSs and GQDs display enhanced solution stability in DI water and other solvents due to controllable oxidation degree as elucidated through Fourier transform infrared (FTIR) analysis.
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Affiliation(s)
- Sakshi Kapoor
- Centre for Nanoscience and
Nanotechnology, Jamia Millia Islamia, New Delhi 110025, India
| | - Aaruni Jha
- Centre for Nanoscience and
Nanotechnology, Jamia Millia Islamia, New Delhi 110025, India
| | - Hilal Ahmad
- Centre for Nanoscience and
Nanotechnology, Jamia Millia Islamia, New Delhi 110025, India
| | - S. S. Islam
- Centre for Nanoscience and
Nanotechnology, Jamia Millia Islamia, New Delhi 110025, India
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14
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Elumalai S, Bathir Jaber S, Chandrasekaran S, Ogawa M. An experimental and steered molecular dynamics simulation approach to histidine assisted liquid-phase exfoliation of graphite into few-layer graphene. Phys Chem Chem Phys 2020; 22:9910-9914. [PMID: 32255462 DOI: 10.1039/d0cp01033b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A simple and green approach to exfoliate graphite in water was developed by its reaction with an amino acid, histidine (His), resulting in the spatial expansion of the interlayer space. Subsequent sonication led to few-layered nanosheets of graphene in water. Steered molecular dynamics (MD) simulations revealed that the exfoliating graphene sheet underwent sheered motion before completely scaling off from the other layer.
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Affiliation(s)
- Satheeshkumar Elumalai
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, 555 Moo 1 Payupnai, Rayong 21210, Thailand.
| | - Simahudeen Bathir Jaber
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620 015, Tamil Nadu, India
| | | | - Makoto Ogawa
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, 555 Moo 1 Payupnai, Rayong 21210, Thailand.
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15
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Fu C, Mikšátko J, Assies L, Vrkoslav V, Orlandi S, Kalbáč M, Kovaříček P, Zeng X, Zhou B, Muccioli L, Perepichka DF, Orgiu E. Surface-Confined Macrocyclization via Dynamic Covalent Chemistry. ACS NANO 2020; 14:2956-2965. [PMID: 32068388 DOI: 10.1021/acsnano.9b07671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Surface-confined synthesis is a promising approach to build complex molecular nanostructures including macrocycles. However, despite the recent advances in on-surface macrocyclization under ultrahigh vacuum, selective synthesis of monodisperse and multicomponent macrocycles remains a challenge. Here, we report on an on-surface formation of [6 + 6] Schiff-base macrocycles via dynamic covalent chemistry. The macrocycles form two-dimensional crystalline domains on the micrometer scale, enabled by dynamic conversion of open-chain oligomers into well-defined ∼3.0 nm hexagonal macrocycles. We further show that by tailoring the length of the alkyl substituents, it is possible to control which of three possible products-oligomers, macrocycles, or polymers-will form at the surface. In situ scanning tunneling microscopy imaging combined with density functional theory calculations and molecular dynamics simulations unravel the synergistic effect of surface confinement and solvent in leading to preferential on-surface macrocyclization.
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Affiliation(s)
- Chaoying Fu
- Center Lab of Longhua Branch and Department of Infectious disease, Shenzhen People's Hospital, second Clinical Medical College of Jinan University, Shenzhen 518120, Guangdong Province, China
- INRS, Énergie Matériaux Télécommunications Centre, 1650 boulevard Lionel-Boulet, Varennes, Québec, Canada J3X 1S2
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal, Quebec, Canada H3A 0B8
| | - Jiří Mikšátko
- J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha, Czech Republic
| | - Lea Assies
- J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha, Czech Republic
| | - Vladimír Vrkoslav
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo námĕstí 542/2, 166 10 Praha, Czech Republic
| | - Silvia Orlandi
- Dipartimento di Chimica Industriale " Toso Montanari ", Università di Bologna, 40136 Bologna, Italy
| | - Martin Kalbáč
- J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha, Czech Republic
| | - Petr Kovaříček
- J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha, Czech Republic
| | - Xiaobin Zeng
- Center Lab of Longhua Branch and Department of Infectious disease, Shenzhen People's Hospital, second Clinical Medical College of Jinan University, Shenzhen 518120, Guangdong Province, China
| | - Boping Zhou
- Center Lab of Longhua Branch and Department of Infectious disease, Shenzhen People's Hospital, second Clinical Medical College of Jinan University, Shenzhen 518120, Guangdong Province, China
| | - Luca Muccioli
- Dipartimento di Chimica Industriale " Toso Montanari ", Università di Bologna, 40136 Bologna, Italy
- Institut des Sciences Moléculaires, UMR 5255, University of Bordeaux, 33405 Talence, France
| | - Dmitrii F Perepichka
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal, Quebec, Canada H3A 0B8
| | - Emanuele Orgiu
- INRS, Énergie Matériaux Télécommunications Centre, 1650 boulevard Lionel-Boulet, Varennes, Québec, Canada J3X 1S2
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16
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Han B, Chen H, Hu T, Ye H, Xu L. High electrical conductivity in polydimethylsiloxane composite with tailored graphene foam architecture. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127416] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Abstract
Among the several methods of producing graphene, the liquid-phase exfoliation of graphite is attractive because of a simple and easy procedure, being expected for mass production. The dispersibility of graphene can be improved by adding a dispersant molecule that interacts with graphene, but the appropriate molecular design has not been proposed. In this study, we focused on aromatic compounds with alkyl chains as dispersing agents. We synthesized a series of alkyl aromatic compounds and evaluated their performance as a dispersant for graphene. The results suggest that the alkyl chain length and solubility in the solvent play a vital role in graphene dispersion.
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18
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Zhao HR, Ding JH, Shao ZZ, Xu BY, Zhou QB, Yu HB. High-Quality Boron Nitride Nanosheets and Their Bioinspired Thermally Conductive Papers. ACS APPLIED MATERIALS & INTERFACES 2019; 11:37247-37255. [PMID: 31508934 DOI: 10.1021/acsami.9b11180] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hexagonal boron nitride has displayed increased potential in heat dissipation applications due to its desirable high thermal conductivity and remarkable thermal stability. However, the large-yield and high-quality preparation of boron nitride nanosheets (BNNSs) has been still an enormous challenge. In present work, we developed a universal exfoliation strategy to synthesize few-layer and defect-free BNNSs, which involved the intercalation of hexafluorosilicates/sodium hydroxide into BN crystals followed by exfoliation through a mild stirring process. The yield and concentration of as-obtained BNNS reached up to 78.5% and 12.78 mg/mL, respectively. More importantly, this method has been proven to exfoliate other layered materials like graphene (G), MoS2, and WS2. These as-obtained BNNSs can be directly used for constructing freestanding papers with high thermal conductivities. Typically, the thermal conductivities of the BNNS-G hybrid paper were up to 63.5 W/mK along the in-plane direction and 7.4 W/mK along the through-plane direction. According to the thermal interface materials performance measures, BNNS-G hybrid paper shows great promising applications for heat transfer in integrated circuit packaging.
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Affiliation(s)
- Hong-Ran Zhao
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies , Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201 , China
| | - Ji-Heng Ding
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies , Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201 , China
| | - Zhen-Zong Shao
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies , Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201 , China
| | - Bei-Yu Xu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies , Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201 , China
| | - Qing-Bo Zhou
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies , Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201 , China
| | - Hai-Bin Yu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies , Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo 315201 , China
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19
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Bolognesi M, Brucale M, Lorenzoni A, Prescimone F, Moschetto S, Korolkov VV, Baldoni M, Serrano-Ruiz M, Caporali M, Mercuri F, Besley E, Muccini M, Peruzzini M, Beton PH, Toffanin S. Epitaxial multilayers of alkanes on two-dimensional black phosphorus as passivating and electrically insulating nanostructures. NANOSCALE 2019; 11:17252-17261. [PMID: 31317153 DOI: 10.1039/c9nr01155b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Mechanically exfoliated two-dimensional (2D) black phosphorus (bP) is epitaxially terminated by monolayers and multilayers of tetracosane, a linear alkane, to form a weakly interacting van der Waals heterostructure. Atomic force microscopy (AFM) and computational modelling show that epitaxial domains of alkane chains are ordered in parallel lamellae along the principal crystalline axis of bP, and this order is extended over a few layers above the interface. Epitaxial alkane multilayers delay the oxidation of 2D bP in air by 18 hours, in comparison to 1 hour for bare 2D bP, and act as an electrical insulator, as demonstrated using electrostatic force microscopy. The presented heterostructure is a technologically relevant insulator-semiconductor model system that can open the way to the use of 2D bP in micro- and nanoelectronic, optoelectronic and photonic applications.
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Affiliation(s)
- Margherita Bolognesi
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Marco Brucale
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Andrea Lorenzoni
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Federico Prescimone
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Salvatore Moschetto
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Vladimir V Korolkov
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Matteo Baldoni
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Manuel Serrano-Ruiz
- Istituto di Chimica dei Composti Organometallici (ICCOM) - Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Maria Caporali
- Istituto di Chimica dei Composti Organometallici (ICCOM) - Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Francesco Mercuri
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Elena Besley
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Michele Muccini
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Maurizio Peruzzini
- Istituto di Chimica dei Composti Organometallici (ICCOM) - Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Peter H Beton
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Stefano Toffanin
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
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20
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Ye H, Han B, Chen H, Xu L. The liquid-exfoliation of graphene assisted with hyperbranched polyethylene-g-polyhedral oligomeric silsesquioxane copolymer and its thermal property in polydimethylsiloxane nanocomposite. NANOTECHNOLOGY 2019; 30:355602. [PMID: 31067519 DOI: 10.1088/1361-6528/ab200b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Thermal interface materials with high thermal conductivity are essential to transfer the redundant heat and improve the reliability of integrated circuits. Here we reported high thermal conductivity in polydimethylsiloxane (PDMS) nanocomposite incorporated with few-layer graphene, which was exfoliated in chloroform with assistance of hyperbranched polyethylene-g-polyhedral oligomeric silsesquioxane copolymer (HBPE@POSS) as the stabilizer. In order to improve the compatibility and enhance the thermal property, the HBPE@POSS copolymer was synthesized via the unique chain walking polymerization mechanism, which subsequently was applied to exfoliate natural graphite into few-layer graphene in low-boiling-point solvents. The majority of resultant nanosheets with low defects was verified with lateral dimension of ~400 nm and the thickness of ~1.6 nm, which is attributed to the presence of CH-π noncovalent interaction between graphene and HBPE@POSS copolymer. The graphene nanoplates (GNPs)/polydimethylsiloxane (PDMS) nanocomposites were prepared by solution casting, in which graphene nanofillers were dispersed uniformly in the matrix due to good compatibility between PDMS and oligomeric silsesquioxane segments adsorbed on the nanosheets. The thermal conductivity of 4.0 wt% GNPs/PDMS nanocomposite reaches 0.93 W m-1 K-1, which is 400% higher than that of pure PDMS. The PDMS nanocomposite incorporated with few-layer graphene exhibits a promising prospect in thermal interface for thermal management of electronic devices, and sheds a light on the interfacial improvement mechanism of thermal conductivity for polymer composite.
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Affiliation(s)
- Huijian Ye
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
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21
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Volland M, Lennert A, Roth A, Ince M, Torres T, Guldi DM. Azulenocyanines immobilized on graphene; on the way to panchromatic absorption and efficient DSSC blocking layers. NANOSCALE 2019; 11:10709-10715. [PMID: 31140533 DOI: 10.1039/c9nr02300c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein, a novel electron donor-acceptor hybrid consisting of a NIR absorbing azulenocyanine as an electron donor and few-layer graphene as an electron acceptor was prepared. The extended aromatic core of azulenocyanine (1) assists in the exfoliation of graphite and allows the formation of a very high-quality few-layer graphene azulenocyanine hybrid system (2). The formation of a stable azulenocyanine/graphene hybrid was verified by means of an arsenal of spectroscopic and microscopic techniques. Notable is the fact that the absorption spectrum recorded for 1 and likewise that for 2 covers large portions of the solar spectrum, that is, from the UV through the visible to the NIR region. In light of the latter, we incorporated 1 as well as 2 as a photosensitizer in dye sensitized solar cells (DSSCs) and probed their light harvesting. Besides an increase in the photovoltaic conversion efficiency we focused on the stability of DSSCs by preventing charge recombination between FTO and the liquid electrolyte. We used 2 as a blocking layer and in comparison with a TiCl4 pretreated blocking layer a superior conversion efficiency was realized.
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Affiliation(s)
- Michel Volland
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany.
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22
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Review on graphene and its derivatives: Synthesis methods and potential industrial implementation. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.10.028] [Citation(s) in RCA: 201] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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23
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Velpula G, Phillipson R, Lian JX, Cornil D, Walke P, Verguts K, Brems S, Uji-I H, De Gendt S, Beljonne D, Lazzaroni R, Mali KS, De Feyter S. Graphene Meets Ionic Liquids: Fermi Level Engineering via Electrostatic Forces. ACS NANO 2019; 13:3512-3521. [PMID: 30860809 DOI: 10.1021/acsnano.8b09768] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Graphene-based two-dimensional (2D) materials are promising candidates for a number of different energy applications. A particularly interesting one is in next generation supercapacitors, where graphene is being explored as an electrode material in combination with room temperature ionic liquids (ILs) as electrolytes. Because the amount of energy that can be stored in such supercapacitors critically depends on the electrode-electrolyte interface, there is considerable interest in understanding the structure and properties of the graphene/IL interface. Here, we report the changes in the properties of graphene upon adsorption of a homologous series of alkyl imidazolium tetrafluoroborate ILs using a combination of experimental and theoretical tools. Raman spectroscopy reveals that these ILs cause n-type doping of graphene, and the magnitude of doping increases with increasing cation chain length despite the expected decrease in the density of surface-adsorbed ions. Molecular modeling simulations show that doping originates from the changes in the electrostatic potential at the graphene/IL interface. The findings described here represent an important step in developing a comprehensive understanding of the graphene/IL interface.
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Affiliation(s)
- Gangamallaiah Velpula
- Division of Molecular Imaging and Photonics, Department of Chemistry , KU Leuven , Celestijnenlaan, 200F , B-3001 Leuven , Belgium
| | - Roald Phillipson
- Division of Molecular Imaging and Photonics, Department of Chemistry , KU Leuven , Celestijnenlaan, 200F , B-3001 Leuven , Belgium
| | - Jian Xiang Lian
- Laboratory for Chemistry of Novel Materials , University of Mons , Place du Parc 20 , 7000 Mons , Belgium
| | - David Cornil
- Laboratory for Chemistry of Novel Materials , University of Mons , Place du Parc 20 , 7000 Mons , Belgium
| | - Peter Walke
- Division of Molecular Imaging and Photonics, Department of Chemistry , KU Leuven , Celestijnenlaan, 200F , B-3001 Leuven , Belgium
| | - Ken Verguts
- Molecular Design and Synthesis, Department of Chemistry , KU Leuven , Celestijnenlaan 200F , B-3001 Leuven , Belgium
- imec vzw , Kapeldreef 75 , B-3001 Leuven , Belgium
| | - Steven Brems
- imec vzw , Kapeldreef 75 , B-3001 Leuven , Belgium
| | - Hiroshi Uji-I
- Division of Molecular Imaging and Photonics, Department of Chemistry , KU Leuven , Celestijnenlaan, 200F , B-3001 Leuven , Belgium
- RIES , Hokkaido University , N20 W10 , Kita-Ward, Sapporo 001-0020 , Japan
| | - Stefan De Gendt
- Molecular Design and Synthesis, Department of Chemistry , KU Leuven , Celestijnenlaan 200F , B-3001 Leuven , Belgium
- imec vzw , Kapeldreef 75 , B-3001 Leuven , Belgium
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials , University of Mons , Place du Parc 20 , 7000 Mons , Belgium
| | - Roberto Lazzaroni
- Laboratory for Chemistry of Novel Materials , University of Mons , Place du Parc 20 , 7000 Mons , Belgium
| | - Kunal S Mali
- Division of Molecular Imaging and Photonics, Department of Chemistry , KU Leuven , Celestijnenlaan, 200F , B-3001 Leuven , Belgium
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry , KU Leuven , Celestijnenlaan, 200F , B-3001 Leuven , Belgium
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24
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Giglio CS, Osazuwa O, Kontopoulou M, Docoslis A. Achieving high yield of graphene nanoplatelets in poloxamer-assisted ultrasonication of graphite in water. J Colloid Interface Sci 2019; 539:107-117. [PMID: 30576986 DOI: 10.1016/j.jcis.2018.12.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 12/07/2018] [Accepted: 12/08/2018] [Indexed: 12/07/2022]
Abstract
The role of surfactant (Pluronic® F 127) concentration on the yield and morphological characteristics of graphene nanoplatelets (GNPs) produced from the sonication of aqueous graphene suspensions is investigated in this work. By employing a wide surfactant concentration range (0.1-15 wt%) and sonication power densities up to 420 W L-1 we identify two graphene exfoliation regimes: the first occurs at low sonication power densities (<340 W L-1) and produces GNPs with sizes 200-300 nm, aspect ratios between 70 and 100, and concentrations up 1 mg mL-1. In that regime, the surfactant concentration has no effect on the exfoliation results. In the second exfoliation regime (>340 W L-1), surfactant concentrations greater than 10 wt% produce dramatic increases in GNP yields, namely up to 3.0 mg mL-1, and overall larger GNPs (350-500 nm) with smaller aspect ratios (5-60). We attribute these changes to the onset of a more energy intensive mechanism, termed cleavage. Cleavage involves the separation of graphite clusters in sub-bulk multi-layered graphene entities, as opposed to exfoliation, which involves the separation of individual or few-layer GNPs. Choosing an exfoliation regime by tuning simple process parameters enables control over the yield, size and morphology of the produced GNPs.
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Affiliation(s)
- Cameron S Giglio
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Osayuki Osazuwa
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Marianna Kontopoulou
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Aristides Docoslis
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada.
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25
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Heard KW, Bartlam C, Williams CD, Zhang J, Alwattar AA, Little MS, Parry AVS, Porter FM, Vincent MA, Hillier IH, Siperstein FR, Vijayaraghavan A, Yeates SG, Quayle P. Initial Studies Directed toward the Rational Design of Aqueous Graphene Dispersants. ACS OMEGA 2019; 4:1969-1981. [PMID: 31459448 PMCID: PMC6648898 DOI: 10.1021/acsomega.8b03147] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 12/14/2018] [Indexed: 05/31/2023]
Abstract
This study presents preliminary experimental data suggesting that sodium 4-(pyrene-1-yl)butane-1-sulfonate (PBSA), 5, an analogue of sodium pyrene-1-sulfonate (PSA), 1, enhances the stability of aqueous reduced graphene oxide (RGO) graphene dispersions. We find that RGO and exfoliated graphene dispersions prepared in the presence of 5 are approximately double the concentration of those made with commercially available PSA, 1. Quantum mechanical and molecular dynamics simulations provide key insights into the behavior of these molecules on the graphene surface. The seemingly obvious introduction of a polar sulfonate head group linked via an appropriate alkyl spacer to the aromatic core results in both more efficient binding of 5 to the graphene surface and more efficient solvation of the polar head group by bulk solvent (water). Overall, this improves the stabilization of the graphene flakes by disfavoring dissociation of the stabilizer from the graphene surface and inhibiting reaggregation by electrostatic and steric repulsion. These insights are currently the subject of further investigations in an attempt to develop a rational approach to the design of more effective dispersing agents for rGO and graphene in aqueous solution.
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Affiliation(s)
- Kane W.
J. Heard
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Cian Bartlam
- School
of Materials and National Graphene Institute, The University of Manchester, Manchester M13 9PL, U.K.
| | - Christopher D. Williams
- School
of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Junru Zhang
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Aula A. Alwattar
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- College
of Science, University of Basrah, Garmat Ali, 61004 Basrah, Iraq
| | - Mark S. Little
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Adam V. S. Parry
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Fiona M. Porter
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Mark A. Vincent
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Ian H. Hillier
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Flor R. Siperstein
- School
of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Aravind Vijayaraghavan
- School
of Materials and National Graphene Institute, The University of Manchester, Manchester M13 9PL, U.K.
| | - Stephen G. Yeates
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Peter Quayle
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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26
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Yan H, Yu P, Han G, Zhang Q, Gu L, Yi Y, Liu H, Li Y, Mao L. High‐Yield and Damage‐free Exfoliation of Layered Graphdiyne in Aqueous Phase. Angew Chem Int Ed Engl 2019; 58:746-750. [DOI: 10.1002/anie.201809730] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/11/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Hailong Yan
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsInstitute of Chemistrythe Chinese, Academy of Sciences (CAS) Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Ping Yu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsInstitute of Chemistrythe Chinese, Academy of Sciences (CAS) Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Guangchao Han
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | | | - Lin Gu
- Institute of PhysicsCAS Beijing 100190 China
| | - Yuanping Yi
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Huibiao Liu
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Yuliang Li
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsInstitute of Chemistrythe Chinese, Academy of Sciences (CAS) Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
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27
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Margaryan N, Kokanyan N, Kokanyan E. Low-temperature synthesis and characteristics of fractal graphene layers. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2018.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Liu W, Li P, Wang W, Zhu D, Chen Y, Pen S, Paek E, Mitlin D. Directional Flow-Aided Sonochemistry Yields Graphene with Tunable Defects to Provide Fundamental Insight on Sodium Metal Plating Behavior. ACS NANO 2018; 12:12255-12268. [PMID: 30422625 DOI: 10.1021/acsnano.8b06051] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We report a directional flow-aided sonochemistry exfoliation technique that allows for unparalleled control of graphene structural order and chemical uniformity. Depending on the orientation of the shockwave relative to the flow-aligned graphite flakes, the resultant bilayer and trilayer graphene is nearly defect free (at-edge sonication graphene "AES-G") or is highly defective (in-plane sonication graphene "IPS-G"). AES-G has a Raman G/D band intensity ratio of 14.3 and an XPS-derived O content of 1.3 at. %, while IPS-G has an IG/D of 1.6 and 6.2 at. % O. AES-G and IPS-G are then employed to understand the role of carbon support structure and chemistry in Na metal plating/stripping for sodium metal battery anodes. The presence of graphene defects and oxygen groups is highly deleterious: In a standard carbonate solution (1 M NaClO4, 1:1 EC-DEC, 5 vol % FEC), AES-G gives stable cycling at 2 mA/cm2 with 100% Coulombic efficiency (CE) (within instrument accuracy) and an area capacity of 1 mAh/cm2. Meanwhile IPS-G performs on-par with the baseline Cu support in terms of poor CE, severe mossy metal dendrites, and periodic electrical shorts. We argue that solid electrolyte interface (SEI) stability is the key for stable cycling, with defects of IPS-G being catalytic toward SEI formation. For IPS-G, the SEI layer also shows F-rich "hot spots" due to accelerated decomposition of FEC additive in localized regions.
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Affiliation(s)
- Wei Liu
- Institute of New-Energy and Low-Carbon Technology , Sichuan University , Chengdu , Sichuan , China , 610065
| | - Peiyu Li
- Institute of New-Energy and Low-Carbon Technology , Sichuan University , Chengdu , Sichuan , China , 610065
| | - Wenwu Wang
- College of Materials Science and Technology , Sichuan University , Chengdu , Sichuan , China , 610065
| | - Ding Zhu
- Institute of New-Energy and Low-Carbon Technology , Sichuan University , Chengdu , Sichuan , China , 610065
| | - Yungui Chen
- Institute of New-Energy and Low-Carbon Technology , Sichuan University , Chengdu , Sichuan , China , 610065
- College of Materials Science and Technology , Sichuan University , Chengdu , Sichuan , China , 610065
| | - Songlin Pen
- Institute of New-Energy and Low-Carbon Technology , Sichuan University , Chengdu , Sichuan , China , 610065
| | - Eunsu Paek
- Chemical & Biomolecular Engineering and Mechanical Engineering , Clarkson University , Potsdam , New York 13699 , United States
| | - David Mitlin
- Institute of New-Energy and Low-Carbon Technology , Sichuan University , Chengdu , Sichuan , China , 610065
- Chemical & Biomolecular Engineering and Mechanical Engineering , Clarkson University , Potsdam , New York 13699 , United States
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29
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Yan H, Yu P, Han G, Zhang Q, Gu L, Yi Y, Liu H, Li Y, Mao L. High‐Yield and Damage‐free Exfoliation of Layered Graphdiyne in Aqueous Phase. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hailong Yan
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsInstitute of Chemistrythe Chinese, Academy of Sciences (CAS) Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Ping Yu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsInstitute of Chemistrythe Chinese, Academy of Sciences (CAS) Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Guangchao Han
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | | | - Lin Gu
- Institute of PhysicsCAS Beijing 100190 China
| | - Yuanping Yi
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Huibiao Liu
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Yuliang Li
- CAS Key Laboratory of Organic SolidsInstitute of ChemistryCAS Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsInstitute of Chemistrythe Chinese, Academy of Sciences (CAS) Beijing 100190 China
- University of CAS Beijing 1100049 China
- CAS Research/Education Center for Excellence in Molecule Science Beijing 100190 China
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30
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Navik R, Gai Y, Wang W, Zhao Y. Curcumin-assisted ultrasound exfoliation of graphite to graphene in ethanol. ULTRASONICS SONOCHEMISTRY 2018; 48:96-102. [PMID: 30080591 DOI: 10.1016/j.ultsonch.2018.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/18/2018] [Accepted: 05/13/2018] [Indexed: 06/08/2023]
Abstract
In this paper, we demonstrated a simple and cost-effective method to produce graphene from graphite in ethanol using ultrasound assisted with curcumin. The influence of curcumin concentration, starting graphite amount, sonication power, and sonication time on the graphene concentration was studied schematically. The π-π interaction between curcumin and graphene, being confirmed by FTIR spectrum, facilitate the exfoliation of the graphite into graphene. The concentration of the graphene in the ethanol reached up to 1.44 mg mL-1 and the exfoliated suspension was relatively stable. The content of monolayer, bilayer, and multilayer in the exfoliated graphene suspension were 21%, 37%, and 42%, respectively. The as-prepared graphene sheets were free-defect. This novel approach may not only enable to exfoliate the graphite into graphene but also to make the graphene-curcumin hybrid which might find applications in pharmaceutical industry.
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Affiliation(s)
- Rahul Navik
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, PR China
| | - Yanzhe Gai
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, PR China
| | - Wucong Wang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, PR China
| | - Yaping Zhao
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, PR China.
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31
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Mukherjee S, Ren Z, Singh G. Beyond Graphene Anode Materials for Emerging Metal Ion Batteries and Supercapacitors. NANO-MICRO LETTERS 2018; 10:70. [PMID: 30393718 PMCID: PMC6199117 DOI: 10.1007/s40820-018-0224-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 09/12/2018] [Indexed: 05/02/2023]
Abstract
Intensive research effort is currently focused on the development of efficient, reliable, and environmentally safe electrochemical energy storage systems due to the ever-increasing global energy storage demand. Li ion battery systems have been used as the primary energy storage device over the last three decades. However, low abundance and uneven distribution of lithium and cobalt in the earth crust and the associated cost of these materials, have resulted in a concerted effort to develop beyond lithium electrochemical storage systems. In the case of non-Li ion rechargeable systems, the development of electrode materials is a significant challenge, considering the larger ionic size of the metal-ions and slower kinetics. Two-dimensional (2D) materials, such as graphene, transition metal dichalcogenides, MXenes and phosphorene, have garnered significant attention recently due to their multi-faceted advantageous properties: large surface areas, high electrical and thermal conductivity, mechanical strength, etc. Consequently, the study of 2D materials as negative electrodes is of notable importance as emerging non-Li battery systems continue to generate increasing attention. Among these interesting materials, graphene has already been extensively studied and reviewed, hence this report focuses on 2D materials beyond graphene for emerging non-Li systems. We provide a comparative analysis of 2D material chemistry, structure, and performance parameters as anode materials in rechargeable batteries and supercapacitors.
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Affiliation(s)
- Santanu Mukherjee
- Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS, 66506, USA.
| | - Zhongkan Ren
- Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - Gurpreet Singh
- Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS, 66506, USA.
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32
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Vlăsceanu GM, Amărandi RM, Ioniță M, Tite T, Iovu H, Pilan L, Burns JS. Versatile graphene biosensors for enhancing human cell therapy. Biosens Bioelectron 2018; 117:283-302. [DOI: 10.1016/j.bios.2018.04.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/18/2018] [Accepted: 04/25/2018] [Indexed: 01/04/2023]
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33
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Yadav R, Subhash A, Chemmenchery N, Kandasubramanian B. Graphene and Graphene Oxide for Fuel Cell Technology. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02326] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ramdayal Yadav
- Structural Composite Fabrication Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry
of Defence, Girinagar, Pune-411025, India
| | - Akshay Subhash
- Department of Polymer Engineering, University College of Engineering, Thodupuzha, Idukki, Kerala-685587, India
| | - Nikhil Chemmenchery
- Department of Polymer Engineering, University College of Engineering, Thodupuzha, Idukki, Kerala-685587, India
| | - Balasubramanian Kandasubramanian
- Structural Composite Fabrication Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry
of Defence, Girinagar, Pune-411025, India
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34
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Shahid MU, Mohamed NM, Muhsan AS, Khatani M, Bashiri R, Zaine SNA, Shamsudin AE. Dual functional passivating layer of graphene/TiO2 for improved performance of dye-sensitized solar cells. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0685-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Cost-effective liquid-phase exfoliation of molybdenum disulfide by prefreezing and thermal-shock. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.09.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Kamali AR. Scalable fabrication of highly conductive 3D graphene by electrochemical exfoliation of graphite in molten NaCl under Ar/H2 atmosphere. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.03.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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37
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Lin Z, Karthik PS, Hada M, Nishikawa T, Hayashi Y. Simple Technique of Exfoliation and Dispersion of Multilayer Graphene from Natural Graphite by Ozone-Assisted Sonication. NANOMATERIALS 2017; 7:nano7060125. [PMID: 28555015 PMCID: PMC5485772 DOI: 10.3390/nano7060125] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 05/18/2017] [Accepted: 05/24/2017] [Indexed: 02/03/2023]
Abstract
Owing to its unique properties, graphene has attracted tremendous attention in many research fields. There is a great space to develop graphene synthesis techniques by an efficient and environmentally friendly approach. In this paper, we report a facile method to synthesize well-dispersed multilayer graphene (MLG) without using any chemical reagents or organic solvents. This was achieved by the ozone-assisted sonication of the natural graphite in a water medium. The frequency or number of ozone treatments plays an important role for the dispersion in the process. The possible mechanism of graphene exfoliation and the introduction of functional groups have been postulated. The experimental setup is unique for ozone treatment and enables the elimination of ozone off-gas. The heat generated by the dissipation of ultrasonic waves was used as it is, and no additional heat was supplied. The graphene dispersion was stable, and no evidence of aggregation was observed---even after several months. The characterization results show that well-dispersed MLG was successfully synthesized without any significant damage to the overall structure. The graphene obtained by this method has potential applications in composite materials, conductive coatings, energy storage, and electronic devices.
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Affiliation(s)
- Zaw Lin
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
| | - Paneer Selvam Karthik
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
| | - Masaki Hada
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
| | - Takeshi Nishikawa
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
| | - Yasuhiko Hayashi
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
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38
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Kalaiyarasi J, Meenakshi S, Pandian K, Gopinath SCB. Simultaneous voltammetric determination of vanillin and guaiacol in food products on defect free graphene nanoflakes modified glassy carbon electrode. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2161-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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39
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Bottari G, Herranz MÁ, Wibmer L, Volland M, Rodríguez-Pérez L, Guldi DM, Hirsch A, Martín N, D'Souza F, Torres T. Chemical functionalization and characterization of graphene-based materials. Chem Soc Rev 2017; 46:4464-4500. [DOI: 10.1039/c7cs00229g] [Citation(s) in RCA: 308] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review offers an overview on the chemical functionalization, characterization and applications of graphene-based materials.
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Affiliation(s)
- Giovanni Bottari
- Department of Organic Chemistry
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences
| | - Ma Ángeles Herranz
- Departamento de Química Orgánica I
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Leonie Wibmer
- Department of Chemistry and Pharmacy
- Interdisciplinary Center for Molecular Materials (ICMM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Michel Volland
- Department of Chemistry and Pharmacy
- Interdisciplinary Center for Molecular Materials (ICMM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Laura Rodríguez-Pérez
- Departamento de Química Orgánica I
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy
- Interdisciplinary Center for Molecular Materials (ICMM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Andreas Hirsch
- Department of Chemistry and Pharmacy
- University Erlangen-Nürnberg
- 91054 Erlangen
- Germany
| | - Nazario Martín
- IMDEA-Nanociencia
- Campus de Cantoblanco
- 28049 Madrid
- Spain
- Departamento de Química Orgánica I
| | | | - Tomás Torres
- Department of Organic Chemistry
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences
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