51
|
Effect of Doping Temperatures and Nitrogen Precursors on the Physicochemical, Optical, and Electrical Conductivity Properties of Nitrogen-Doped Reduced Graphene Oxide. MATERIALS 2019; 12:ma12203376. [PMID: 31623130 PMCID: PMC6829554 DOI: 10.3390/ma12203376] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 09/26/2019] [Accepted: 10/05/2019] [Indexed: 11/30/2022]
Abstract
The greatest challenge in graphene-based material synthesis is achieving large surface area of high conductivity. Thus, tuning physico-electrochemical properties of these materials is of paramount importance. An even greater problem is to obtain a desired dopant configuration which allows control over device sensitivity and enhanced reproducibility. In this work, substitutional doping of graphene oxide (GO) with nitrogen atoms to induce lattice–structural modification of GO resulted in nitrogen-doped reduced graphene oxide (N-rGO). The effect of doping temperatures and various nitrogen precursors on the physicochemical, optical, and conductivity properties of N-rGO is hereby reported. This was achieved by thermal treating GO with different nitrogen precursors at various doping temperatures. The lowest doping temperature (600 °C) resulted in less thermally stable N-rGO, yet with higher porosity, while the highest doping temperature (800 °C) produced the opposite results. The choice of nitrogen precursors had a significant impact on the atomic percentage of nitrogen in N-rGO. Nitrogen-rich precursor, 4-nitro-ο-phenylenediamine, provided N-rGO with favorable physicochemical properties (larger surface area of 154.02 m2 g−1) with an enhanced electrical conductivity (0.133 S cm−1) property, making it more useful in energy storage devices. Thus, by adjusting the doping temperatures and nitrogen precursors, one can tailor various properties of N-rGO.
Collapse
|
52
|
Beyazay T, Oztuna FES, Unal O, Acar HY, Unal U. Free‐Standing N‐doped Reduced Graphene Oxide Papers Decorated with Iron Oxide Nanoparticles: Stable Supercapacitor Electrodes. ChemElectroChem 2019. [DOI: 10.1002/celc.201900855] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tugce Beyazay
- Department of Material Science and EngineeringKoç University, Rumelifeneri Yolu 34450 Sariyer Istanbul (Turkey
| | - F. Eylul Sarac Oztuna
- Department of ChemistryKoç University, Rumelifeneri Yolu 34450 Sariyer Istanbul Turkey
| | - Ozlem Unal
- Department of Material Science and EngineeringKoç University, Rumelifeneri Yolu 34450 Sariyer Istanbul (Turkey
| | - Havva Yagci Acar
- Department of Material Science and EngineeringKoç University, Rumelifeneri Yolu 34450 Sariyer Istanbul (Turkey
- Department of ChemistryKoç University, Rumelifeneri Yolu 34450 Sariyer Istanbul Turkey
- Koç University Surface Science and Technology Center (KUYTAM)Koç University, Rumelifeneri Yolu 34450 Sariyer Istanbul Turkey
| | - Ugur Unal
- Department of Material Science and EngineeringKoç University, Rumelifeneri Yolu 34450 Sariyer Istanbul (Turkey
- Department of ChemistryKoç University, Rumelifeneri Yolu 34450 Sariyer Istanbul Turkey
- Koç University Surface Science and Technology Center (KUYTAM)Koç University, Rumelifeneri Yolu 34450 Sariyer Istanbul Turkey
| |
Collapse
|
53
|
Wu Y, Li F, Xue J, Lv Z. Sn-imidazolates supported on boron and nitrogen-doped activated carbon as novel catalysts for acetylene hydrochlorination. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1641700] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Yibo Wu
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, China
| | - Fuxiang Li
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, China
| | - Jianwei Xue
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, China
| | - Zhiping Lv
- Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, China
| |
Collapse
|
54
|
Hierarchical zinc oxide/reduced graphene oxide composite: Preparation route, mechanism study and lithium ion storage. J Colloid Interface Sci 2019; 548:233-243. [DOI: 10.1016/j.jcis.2019.04.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/10/2019] [Accepted: 04/14/2019] [Indexed: 11/22/2022]
|
55
|
Kim T, Lee J, Lee G, Lee J, Song H, Jho JY, Lee HH, Kim YH. Synthesis of a Carbonaceous Two-Dimensional Material. ACS APPLIED MATERIALS & INTERFACES 2019; 11:21308-21313. [PMID: 31012310 DOI: 10.1021/acsami.9b01808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Despite tremendous accomplishments achieved in 2D materials, little progress has been made in carbonaceous 2D materials beyond graphene and graphene oxide. Here, we report a 2D material of carbonaceous nanoplates (CANP). The bottom-up synthesis of CANP is green, separation-free, and massive. The nanoplates are 2 to 3 monolayers thick with an average interlayer spacing of 0.57 nm. The synthesis involves viscosity-aided two-dimensional growth of fragmented glucose derivatives and leads to the complete conversion of glucose to the 2D nanoplates. Application tests demonstrate the usefulness of the affordable 2D material.
Collapse
Affiliation(s)
- Taewoo Kim
- Department of Mechanical Engineering , Incheon National University , Incheon 22012 , South Korea
| | | | | | | | | | | | | | | |
Collapse
|
56
|
Well-dispersed Pt nanoparticles on borane-modified graphene oxide and their electrocatalytic performance for oxygen reduction reaction. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.12.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
57
|
Mazánek V, Luxa J, Matějková S, Kučera J, Sedmidubský D, Pumera M, Sofer Z. Ultrapure Graphene Is a Poor Electrocatalyst: Definitive Proof of the Key Role of Metallic Impurities in Graphene-Based Electrocatalysis. ACS NANO 2019; 13:1574-1582. [PMID: 30624902 DOI: 10.1021/acsnano.8b07534] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Graphene and its derivatives have been reported in many articles as "metal-free" carbon electrocatalytic materials. Its synthesis procedures are generally based on the chemical oxidation of graphite and subsequent thermal or chemical reduction. Because graphene oxide has a large surface area and typically contains a variety of oxygen functionalities, metallic ions (impurities) from reaction mixtures can be adsorbed on its surface. These impurities can significantly enhance the electrocatalytic activity and thus lead to data misinterpretation; such impure samples are referred to as "metal-free" catalysts. In this paper, we report the synthesis of impurity-free graphene, which is compared with graphene prepared by standard methods based on the thermal and chemical reduction of two graphene oxides. Detailed analysis of graphene prepared by standard methods shows a direct relation between metallic impurities and the electrocatalytic activity of graphene. In contrast, impurity-free graphene exhibits poor electrocatalytic activity.
Collapse
Affiliation(s)
- Vlastimil Mazánek
- Department of Inorganic Chemistry , University of Chemistry and Technology Prague , Technická 5 , 166 28 Prague 6, Czech Republic
| | - Jan Luxa
- Department of Inorganic Chemistry , University of Chemistry and Technology Prague , Technická 5 , 166 28 Prague 6, Czech Republic
| | - Stanislava Matějková
- Central Analytical Laboratory , Institute of Organic Chemistry and Biochemistry of the Academy of Sciences of the Czech Republic , 166 10 Prague 6, Czech Republic
| | - Jan Kučera
- Department of Nuclear Spectroscopy , Nuclear Physics Institute of the Academy of Sciences of the Czech Republic , 250 68 Řež , Czech Republic
| | - David Sedmidubský
- Department of Inorganic Chemistry , University of Chemistry and Technology Prague , Technická 5 , 166 28 Prague 6, Czech Republic
| | - Martin Pumera
- Department of Inorganic Chemistry , University of Chemistry and Technology Prague , Technická 5 , 166 28 Prague 6, Czech Republic
| | - Zdeněk Sofer
- Department of Inorganic Chemistry , University of Chemistry and Technology Prague , Technická 5 , 166 28 Prague 6, Czech Republic
| |
Collapse
|
58
|
Liu P, Li C, Zhang R, Tang Q, Wei J, Lu Y, Shen P. An ultrasensitive electrochemical immunosensor for procalcitonin detection based on the gold nanoparticles-enhanced tyramide signal amplification strategy. Biosens Bioelectron 2019; 126:543-550. [DOI: 10.1016/j.bios.2018.10.048] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/25/2018] [Accepted: 10/20/2018] [Indexed: 12/11/2022]
|
59
|
Self-Standing Reduced Graphene Oxide Papers Electrodeposited with Manganese Oxide Nanostructures as Electrodes for Electrochemical Capacitors. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
60
|
Hou L, Hu Z, Wu H, Wang X, Xie Y, Li S, Ma F, Zhu C. 2-Amino-3-chloro-1,4-naphthoquinone-covalent modification of graphene nanosheets for efficient electrochemical energy storage. Dalton Trans 2019; 48:9234-9242. [DOI: 10.1039/c9dt00895k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The 2-amino-3-chloro-1,4-naphthoquinone molecules are covalently grafted onto graphene nanosheets by diazotization for efficient electrochemical energy storage.
Collapse
Affiliation(s)
- Lijie Hou
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Zhongai Hu
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Hongying Wu
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Xiaotong Wang
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Yandong Xie
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Shanshan Li
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Fuquan Ma
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Cuimei Zhu
- Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| |
Collapse
|
61
|
Dong B, Xia Z, Sun J, Dai X, Chen X, Ni BJ. The inhibitory impacts of nano-graphene oxide on methane production from waste activated sludge in anaerobic digestion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:1376-1384. [PMID: 30235623 DOI: 10.1016/j.scitotenv.2018.07.424] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 07/16/2018] [Accepted: 07/30/2018] [Indexed: 06/08/2023]
Abstract
The wide application of graphene oxide nanoparticles inevitably leads to their discharge into wastewater treatment plants and combination with the activated sludge. However, to date, it is largely unknown if the nano-graphene oxide (NGO) has potential impacts on the anaerobic digestion of waste activated sludge (WAS). Therefore, this work aims to fill the knowledge gap through comprehensively investigating the effects of NGO on carbon transformation and methane production in the anaerobic digestion of WAS. Biochemical methane potential tests demonstrated the methane production dropped with increasing NGO additions, the cumulative methane production decreasing by 7.6% and 12.6% at the NGO dosing rates of 0.054 mg/mg-VS and 0.108 mg/mg-VS, respectively. Model-based analysis indicated NGO significantly reduced biochemical methane potential, with the highest biochemical methane potential decrease being approximately 10% at the highest NGO dosing rate. Further experimental analysis suggested that the decreased methane production was firstly related to a decrease in soluble organic substrates availability during the process of sludge disintegration, potentially attributing to the strong absorption of organic substrates by NGO. Secondly, NGO significantly inhibited the methanogenesis by negatively affecting the corresponding enzyme activity (i.e. coenzyme F420), which could also resulted in a decreased methane production.
Collapse
Affiliation(s)
- Bin Dong
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Zhaohui Xia
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Jing Sun
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
| | - Xiaohu Dai
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Xueming Chen
- Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Bing-Jie Ni
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
| |
Collapse
|
62
|
Shin Y, Lee S, Park S, Jang D, Lim D, Park G, Seok S, Park S. Production of N-doped Reduced Graphene Oxide/Fe3
O4
Hybrids and Effect of Order of Production Steps on Electrocatalytic Performances for Oxygen Reduction Reaction. ChemistrySelect 2018. [DOI: 10.1002/slct.201801788] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yunseok Shin
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| | - Seungjun Lee
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| | - Sunghee Park
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| | - Dawoon Jang
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| | - Donggyu Lim
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| | - Gilsoo Park
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| | - Sujin Seok
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| | - Sungjin Park
- Department of Chemistry of Chemical Engineering; WCSL (World Class Smart Lab) Green Energy Battery Lab; Inha University, 100 Inha-ro, Nam-gu; Incheon 22212 Republic of Korea
| |
Collapse
|
63
|
Majeed MH, Shayesteh P, Persson AR, Wallenberg LR, Schnadt J, Wendt OF. A PdII
Carbene Complex with Anthracene Side-Arms for π-Stacking on Reduced Graphene Oxide (rGO): Activity towards Undirected C-H Oxygenation of Arenes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800978] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Maitham H. Majeed
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; Box 124 221 00 Lund Sweden
| | - Payam Shayesteh
- Division of Synchrotron Radiation Research; Department of Physics; Lund University; Box 118 221 00 Lund Sweden
| | - Axel R. Persson
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; Box 124 221 00 Lund Sweden
- National Center for High Resolution Electron Microscopy and NanoLund; Lund University; Box 124 221 00 Lund Sweden
| | - L. Reine Wallenberg
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; Box 124 221 00 Lund Sweden
- National Center for High Resolution Electron Microscopy and NanoLund; Lund University; Box 124 221 00 Lund Sweden
| | - Joachim Schnadt
- Division of Synchrotron Radiation Research; Department of Physics; Lund University; Box 118 221 00 Lund Sweden
| | - Ola F. Wendt
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; Box 124 221 00 Lund Sweden
| |
Collapse
|
64
|
Donarelli M, Ottaviano L. 2D Materials for Gas Sensing Applications: A Review on Graphene Oxide, MoS₂, WS₂ and Phosphorene. SENSORS (BASEL, SWITZERLAND) 2018; 18:E3638. [PMID: 30373161 PMCID: PMC6264021 DOI: 10.3390/s18113638] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/18/2018] [Accepted: 10/18/2018] [Indexed: 12/11/2022]
Abstract
After the synthesis of graphene, in the first year of this century, a wide research field on two-dimensional materials opens. 2D materials are characterized by an intrinsic high surface to volume ratio, due to their heights of few atoms, and, differently from graphene, which is a semimetal with zero or near zero bandgap, they usually have a semiconductive nature. These two characteristics make them promising candidate for a new generation of gas sensing devices. Graphene oxide, being an intermediate product of graphene fabrication, has been the first graphene-like material studied and used to detect target gases, followed by MoS₂, in the first years of 2010s. Along with MoS₂, which is now experiencing a new birth, after its use as a lubricant, other sulfides and selenides (like WS₂, WSe₂, MoSe₂, etc.) have been used for the fabrication of nanoelectronic devices and for gas sensing applications. All these materials show a bandgap, tunable with the number of layers. On the other hand, 2D materials constituted by one atomic species have been synthetized, like phosphorene (one layer of black phosphorous), germanene (one atom thick layer of germanium) and silicone (one atom thick layer of silicon). In this paper, a comprehensive review of 2D materials-based gas sensor is reported, mainly focused on the recent developments of graphene oxide, exfoliated MoS₂ and WS₂ and phosphorene, for gas detection applications. We will report on their use as sensitive materials for conductometric, capacitive and optical gas sensors, the state of the art and future perspectives.
Collapse
Affiliation(s)
- Maurizio Donarelli
- Sensor Laboratory, Department of Information Engineering, University of Brescia, Via Branze 38, 25136 Brescia, Italy.
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio 10, 67100 L'Aquila, Italy.
| | - Luca Ottaviano
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio 10, 67100 L'Aquila, Italy.
- CNR-SPIN, UOS L'Aquila, Via Vetoio 10, 67100 L'Aquila, Italy.
| |
Collapse
|
65
|
Abakumov AA, Bychko IB, Nikolenko AS, Strizhak PE. Catalytic Activity of N-Doped Reduced Graphene Oxide in the Hydrogenation of Ethylene and Acetylene. THEOR EXP CHEM+ 2018. [DOI: 10.1007/s11237-018-9566-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
66
|
Modification of sterculia gum polysaccharide via network formation by radiation induced crosslinking polymerization for biomedical applications. Int J Biol Macromol 2018; 116:91-99. [DOI: 10.1016/j.ijbiomac.2018.05.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 05/04/2018] [Accepted: 05/06/2018] [Indexed: 01/31/2023]
|
67
|
Abbas SS, Rees GJ, Kelly NL, Dancer CEJ, Hanna JV, McNally T. Facile silane functionalization of graphene oxide. NANOSCALE 2018; 10:16231-16242. [PMID: 30124719 DOI: 10.1039/c8nr04781b] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The facile silane functionalization of graphene oxide (GO) was achieved yielding vinyltrimethoxysilane-reduced graphene oxide (VTMOS-rGO) nanospheres located in the inter-layer spacing between rGO sheets via an acid-base reaction using aqueous media. The successful grafting of the silane agent with pendant vinyl groups to rGO was confirmed by a combination of Fourier-transform infrared (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The structure and speciation of the silane-graphene network (nanosphere) and, the presence of free vinyl groups was verified from solid-state magic angle spinning (MAS) and solution 13C and 29Si nuclear magnetic resonance (NMR) measurements. Evidence from Scanning Electron Microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and TEM-High-Angle Annular Dark-Field (TEM-HAADF) imaging showed that these silane networks aided the exfoliation of the rGO layers preventing agglomeration, the interlayer spacing increased by 10 Å. The thermal stability (TGA/DTA) of VTMOS-rGO was significantly improved relative to GO, displaying just one degradation process for the silane network some 300 °C higher than either VTMOS or GO alone. The reduction of GO to VTMOS-rGO induced sp2 hybridization and enhanced the electrical conductivity of GO by 105 S m-1.
Collapse
Affiliation(s)
- Syeda S Abbas
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry, CV4 7AL, UK
| | | | | | | | | | | |
Collapse
|
68
|
Moon J, Cho H, Maeng MJ, Choi K, Nguyen ĐT, Han JH, Shin JW, Kwon BH, Lee J, Cho S, Lee JI, Park Y, Lee JS, Cho NS. Mechanistic Understanding of Improved Performance of Graphene Cathode Inverted Organic Light-Emitting Diodes by Photoemission and Impedance Spectroscopy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:26456-26464. [PMID: 30010310 DOI: 10.1021/acsami.8b07751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Modification of multilayer graphene films was investigated for a cathode of organic light-emitting diodes (OLEDs). By doping the graphene/electron transport layer (ETL) interface with Li, the driving voltage of the OLED was reduced dramatically from 24.5 to 3.2 V at a luminance of 1000 cd/m2. The external quantum efficiency was also enhanced from 3.4 to 12.9%. Surface analyses showed that the Li doping significantly lowers the lowest unoccupied molecular orbital level of the ETL, thereby reducing the electron injection barrier and facilitating electron injection from the cathode. Impedance spectroscopy analyses performed on electron-only devices (EODs) revealed the existence of distributed trap states with a well-defined activation energy, which is successfully described by the Havriliak-Negami capacitance functions and the temperature-independent frequency dispersion parameters. In particular, the graphene EOD showed a unique high-frequency feature as compared to the indium tin oxide one, which could be explained by an additional parallel capacitance element.
Collapse
Affiliation(s)
- Jaehyun Moon
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| | - Hyunsu Cho
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| | - Min-Jae Maeng
- Department of Physics and Research Institute for Basic Sciences , Kyung Hee University , Seoul 02447 , Republic of Korea
| | - Kwangmin Choi
- Department of Physics and Research Institute for Basic Sciences , Kyung Hee University , Seoul 02447 , Republic of Korea
| | - Đăng Thành Nguyen
- School of Materials Science and Engineering , Chonnam National University , Gwangju 61186 , Republic of Korea
| | - Jun-Han Han
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| | - Jin-Wook Shin
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| | - Byoung-Hwa Kwon
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| | - Jonghee Lee
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
- Department of Creative Convergence Engineering , Hanbat National University , Daejeon 34158 , Republic of Korea
| | - Seungmin Cho
- Hanwha Techwin R&D Center , Seongnam 13488 , Republic of Korea
| | - Jeong-Ik Lee
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| | - Yongsup Park
- Department of Physics and Research Institute for Basic Sciences , Kyung Hee University , Seoul 02447 , Republic of Korea
| | - Jong-Sook Lee
- School of Materials Science and Engineering , Chonnam National University , Gwangju 61186 , Republic of Korea
| | - Nam Sung Cho
- Reality Device Research Division , Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| |
Collapse
|
69
|
Zhang W, Barrio J, Gervais C, Kocjan A, Yu A, Wang X, Shalom M. Synthesis of Carbon-Nitrogen-Phosphorous Materials with an Unprecedented High Amount of Phosphorous toward an Efficient Fire-Retardant Material. Angew Chem Int Ed Engl 2018; 57:9764-9769. [DOI: 10.1002/anie.201805279] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 05/25/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Wenyao Zhang
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology; Ben-Gurion University of the Negev; Beer-Sheva 8410501 Israel
- Key Laboratory of Soft Chemistry and Functional Materials; Nanjing University of Science and Technology; Nanjing 210094 China
- Colloid Chemistry Department Department; Max Planck Institute for Colloids and Interfaces; Potsdam 14424 Germany
- Waterloo Institute for Nanotechnology; University of Waterloo; Waterloo Ontario N2L3G1 Canada
| | - Jesús Barrio
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology; Ben-Gurion University of the Negev; Beer-Sheva 8410501 Israel
| | - Christel Gervais
- Sorbonne Université, Collège de France; Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP); UPMC Universite Paris 6, UMR CNRS 7574; 4 place Jussieu 75252 Paris cedex 05 France
| | - Andraž Kocjan
- Department for Nanostructured Materials; Jožef Stefan Institute; Ljubljana Slovenia
| | - Aiping Yu
- Waterloo Institute for Nanotechnology; University of Waterloo; Waterloo Ontario N2L3G1 Canada
| | - Xin Wang
- Key Laboratory of Soft Chemistry and Functional Materials; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Menny Shalom
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology; Ben-Gurion University of the Negev; Beer-Sheva 8410501 Israel
| |
Collapse
|
70
|
Zhang W, Barrio J, Gervais C, Kocjan A, Yu A, Wang X, Shalom M. Synthesis of Carbon-Nitrogen-Phosphorous Materials with an Unprecedented High Amount of Phosphorous toward an Efficient Fire-Retardant Material. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wenyao Zhang
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology; Ben-Gurion University of the Negev; Beer-Sheva 8410501 Israel
- Key Laboratory of Soft Chemistry and Functional Materials; Nanjing University of Science and Technology; Nanjing 210094 China
- Colloid Chemistry Department Department; Max Planck Institute for Colloids and Interfaces; Potsdam 14424 Germany
- Waterloo Institute for Nanotechnology; University of Waterloo; Waterloo Ontario N2L3G1 Canada
| | - Jesús Barrio
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology; Ben-Gurion University of the Negev; Beer-Sheva 8410501 Israel
| | - Christel Gervais
- Sorbonne Université, Collège de France; Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP); UPMC Universite Paris 6, UMR CNRS 7574; 4 place Jussieu 75252 Paris cedex 05 France
| | - Andraž Kocjan
- Department for Nanostructured Materials; Jožef Stefan Institute; Ljubljana Slovenia
| | - Aiping Yu
- Waterloo Institute for Nanotechnology; University of Waterloo; Waterloo Ontario N2L3G1 Canada
| | - Xin Wang
- Key Laboratory of Soft Chemistry and Functional Materials; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Menny Shalom
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology; Ben-Gurion University of the Negev; Beer-Sheva 8410501 Israel
| |
Collapse
|
71
|
Gudkov MV, Gorenberg AY, Shchegolikhin AN, Shashkin DP, Mel’nikov VP. Explosive Reduction of Graphite Oxide by Hydrazine Vapor at Room Temperature. DOKLADY PHYSICAL CHEMISTRY 2018. [DOI: 10.1134/s0012501618010037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
72
|
Kwon SJ, Han TH, Kim YH, Ahmed T, Seo HK, Kim H, Kim DJ, Xu W, Hong BH, Zhu JX, Lee TW. Solution-Processed n-Type Graphene Doping for Cathode in Inverted Polymer Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4874-4881. [PMID: 29323479 DOI: 10.1021/acsami.7b15307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
n-Type doping with (4-(1,3-dimethyl-2,3-dihydro-1H-benzoimidazol-2-yl)phenyl) dimethylamine (N-DMBI) reduces a work function (WF) of graphene by ∼0.45 eV without significant reduction of optical transmittance. Solution process of N-DMBI on graphene provides effective n-type doping effect and air-stability at the same time. Although neutral N-DMBI act as an electron receptor leaving the graphene p-doped, radical N-DMBI acts as an electron donator leaving the graphene n-doped, which is demonstrated by density functional theory. We also verify the suitability of N-DMBI-doped n-type graphene for use as a cathode in inverted polymer light-emitting diodes (PLEDs) by using various analytical methods. Inverted PLEDs using a graphene cathode doped with N-DMBI radical showed dramatically improved device efficiency (∼13.8 cd/A) than did inverted PLEDs with pristine graphene (∼2.74 cd/A). N-DMBI-doped graphene can provide a practical way to produce graphene cathodes with low WF in various organic optoelectronics.
Collapse
Affiliation(s)
- Sung-Joo Kwon
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyungbuk 790-784, Republic of Korea
| | | | | | | | - Hong-Kyu Seo
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyungbuk 790-784, Republic of Korea
| | | | | | | | | | | | | |
Collapse
|
73
|
Sun X, Qin Y, Li Q, Liu X, Liu Z, Song L, Sun Z. Supported structure-controlled graphitic carbon nitride catalyst for dehydrochlorination of 1,2-dichloroethane. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00760h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The activated carbon supported carbon nitride with more ‘defects’ shows higher catalytic activity for dehydrochlorination of 1,2-DCE than the one with a high degree of polymerization.
Collapse
Affiliation(s)
- Xi Sun
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
- China
| | - Yucai Qin
- Key Laboratory of Petrochemical Catalytic Science and Technology
- Liaoning Province
- Liaoning Shihua University
- Fushun 113001
- China
| | - Qiang Li
- Key Laboratory of Petrochemical Catalytic Science and Technology
- Liaoning Province
- Liaoning Shihua University
- Fushun 113001
- China
| | - Xi Liu
- Syncat@Beijing
- Synfuels China Technology Co., Ltd
- Beijing
- China
| | - Zheng Liu
- Key Laboratory of Petrochemical Catalytic Science and Technology
- Liaoning Province
- Liaoning Shihua University
- Fushun 113001
- China
| | - Lijuan Song
- Key Laboratory of Petrochemical Catalytic Science and Technology
- Liaoning Province
- Liaoning Shihua University
- Fushun 113001
- China
| | - Zhaolin Sun
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
- China
- Key Laboratory of Petrochemical Catalytic Science and Technology
| |
Collapse
|
74
|
Ccorahua R, Troncoso OP, Rodriguez S, Lopez D, Torres FG. Hydrazine treatment improves conductivity of bacterial cellulose/graphene nanocomposites obtained by a novel processing method. Carbohydr Polym 2017; 171:68-76. [DOI: 10.1016/j.carbpol.2017.05.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 04/06/2017] [Accepted: 05/01/2017] [Indexed: 10/19/2022]
|
75
|
Singh B, Singh B. Influence of graphene-oxide nanosheets impregnation on properties of sterculia gum-polyacrylamide hydrogel formed by radiation induced polymerization. Int J Biol Macromol 2017; 99:699-712. [DOI: 10.1016/j.ijbiomac.2017.03.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/01/2017] [Accepted: 03/06/2017] [Indexed: 11/24/2022]
|
76
|
Murray AT, Surendranath Y. Reversing the Native Aerobic Oxidation Reactivity of Graphitic Carbon: Heterogeneous Metal-Free Alkene Hydrogenation. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00395] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander T. Murray
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yogesh Surendranath
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
77
|
Bardhan NM, Kumar PV, Li Z, Ploegh HL, Grossman JC, Belcher AM, Chen GY. Enhanced Cell Capture on Functionalized Graphene Oxide Nanosheets through Oxygen Clustering. ACS NANO 2017; 11:1548-1558. [PMID: 28085249 PMCID: PMC5804333 DOI: 10.1021/acsnano.6b06979] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
With the global rise in incidence of cancer and infectious diseases, there is a need for the development of techniques to diagnose, treat, and monitor these conditions. The ability to efficiently capture and isolate cells and other biomolecules from peripheral whole blood for downstream analyses is a necessary requirement. Graphene oxide (GO) is an attractive template nanomaterial for such biosensing applications. Favorable properties include its two-dimensional architecture and wide range of functionalization chemistries, offering significant potential to tailor affinity toward aromatic functional groups expressed in biomolecules of interest. However, a limitation of current techniques is that as-synthesized GO nanosheets are used directly in sensing applications, and the benefits of their structural modification on the device performance have remained unexplored. Here, we report a microfluidic-free, sensitive, planar device on treated GO substrates to enable quick and efficient capture of Class-II MHC-positive cells from murine whole blood. We achieve this by using a mild thermal annealing treatment on the GO substrates, which drives a phase transformation through oxygen clustering. Using a combination of experimental observations and MD simulations, we demonstrate that this process leads to improved reactivity and density of functionalization of cell capture agents, resulting in an enhanced cell capture efficiency of 92 ± 7% at room temperature, almost double the efficiency afforded by devices made using as-synthesized GO (54 ± 3%). Our work highlights a scalable, cost-effective, general approach to improve the functionalization of GO, which creates diverse opportunities for various next-generation device applications.
Collapse
Affiliation(s)
- Neelkanth M. Bardhan
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- The Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Priyank V. Kumar
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Zeyang Li
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02139, United States
| | - Hidde L. Ploegh
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02139, United States
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jeffrey C. Grossman
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Corresponding Authors: . .
| | - Angela M. Belcher
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- The Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Corresponding Authors: . .
| | - Guan-Yu Chen
- Institute of Biomedical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 30010, Taiwan
- Corresponding Authors: . .
| |
Collapse
|
78
|
Choe JH, Kim NR, Lee ME, Yoon HJ, Song MY, Jin HJ, Yun YS. Flexible Graphene Stacks for Sodium-Ion Storage. ChemElectroChem 2017. [DOI: 10.1002/celc.201600620] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Ho Choe
- Polymer Science and Engineering; Inha University; Incheon 402-751 South Korea
| | - Na Rae Kim
- Polymer Science and Engineering; Inha University; Incheon 402-751 South Korea
| | - Min Eui Lee
- Polymer Science and Engineering; Inha University; Incheon 402-751 South Korea
| | - Hyeon Ji Yoon
- Polymer Science and Engineering; Inha University; Incheon 402-751 South Korea
| | - Min Yeong Song
- Polymer Science and Engineering; Inha University; Incheon 402-751 South Korea
| | - Hyoung-Joon Jin
- Polymer Science and Engineering; Inha University; Incheon 402-751 South Korea
| | - Young Soo Yun
- Chemical Engineering; Kangwon National University; Samcheok 245-711 South Korea
| |
Collapse
|
79
|
Wang J, Zhang H, Hunt MRC, Charles A, Tang J, Bretcanu O, Walker D, Hassan KT, Sun Y, Šiller L. Synthesis and Characterisation of Reduced Graphene Oxide/Bismuth Composite for Electrodes in Electrochemical Energy Storage Devices. CHEMSUSCHEM 2017; 10:363-371. [PMID: 28098431 PMCID: PMC5363365 DOI: 10.1002/cssc.201601553] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Indexed: 06/06/2023]
Abstract
A reduced graphene oxide/bismuth (rGO/Bi) composite was synthesized for the first time using a polyol process at a low reaction temperature and with a short reaction time (60 °C and 3 hours, respectively). The as-prepared sample is structured with 20-50 nm diameter bismuth particles distributed on the rGO sheets. The rGO/Bi composite displays a combination of capacitive and battery-like charge storage, achieving a specific capacity value of 773 C g-1 at a current density of 0.2 A g-1 when charged to 1 V. The material not only has good power density but also shows moderate stability in cycling tests with current densities as high as 5 A g-1 . The relatively high abundance and low price of bismuth make this rGO/Bi material a promising candidate for use in electrode materials in future energy storage devices.
Collapse
Affiliation(s)
- Jiabin Wang
- School of Chemical Engineering and Advanced MaterialsBedson BuildingNewcastle UniversityNewcastle upon TyneNE1 7RUUK
| | - Han Zhang
- 1D Nanomaterials GroupNational Institute for Materials Science (NIMS)Sengen 1-2-1TsukubaIbaraki305-0047Japan
| | - Michael R. C. Hunt
- Centre for Materials Physics, Department of PhysicsDurham UniversityDurhamDH1 3LEUK
| | - Alasdair Charles
- School of Chemical Engineering and Advanced MaterialsBedson BuildingNewcastle UniversityNewcastle upon TyneNE1 7RUUK
| | - Jie Tang
- 1D Nanomaterials GroupNational Institute for Materials Science (NIMS)Sengen 1-2-1TsukubaIbaraki305-0047Japan
| | - Oana Bretcanu
- School of Mechanical EngineeringStephenson BuildingNewcastle UniversityNewcastle upon TyneNE1 7RUUK
| | - David Walker
- Department of PhysicsUniversity of WarwickCoventryCV4 7ALUK
| | - Khalil T. Hassan
- School of Chemical Engineering and Advanced MaterialsBedson BuildingNewcastle UniversityNewcastle upon TyneNE1 7RUUK
| | - Yige Sun
- 1D Nanomaterials GroupNational Institute for Materials Science (NIMS)Sengen 1-2-1TsukubaIbaraki305-0047Japan
| | - Lidija Šiller
- School of Chemical Engineering and Advanced MaterialsBedson BuildingNewcastle UniversityNewcastle upon TyneNE1 7RUUK
| |
Collapse
|
80
|
Xu Z, Fan X, Li H, Fu H, Lau WM, Zhao X. Edges of graphene and carbon nanotubes with high catalytic performance for the oxygen reduction reaction. Phys Chem Chem Phys 2017; 19:21003-21011. [DOI: 10.1039/c7cp03416d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Graphene fragments prepared using a wet-grinding method show high catalytic performance for the oxygen reduction reaction.
Collapse
Affiliation(s)
- Zhanwei Xu
- State Key Laboratory of Solidification Processing
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Xiaoli Fan
- State Key Laboratory of Solidification Processing
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Hejun Li
- State Key Laboratory of Solidification Processing
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Hao Fu
- School of Materials Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- P. R. China
| | - Woon Ming Lau
- Chengdu Green Energy and Green Manufacturing Technology R&D Center
- Chengdu
- P. R. China
| | - Xueni Zhao
- State Key Laboratory of Solidification Processing
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| |
Collapse
|
81
|
Yoon SH, Jung HT. Grafting polycarbonate onto graphene nanosheets: synthesis and characterization of high performance polycarbonate–graphene nanocomposites for ESD/EMI applications. RSC Adv 2017. [DOI: 10.1039/c7ra07537e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High performance polycarbonate–graphene nanocomposites were synthesized by grafting polycarbonate onto graphene nanosheets with outstanding mechanical and electrical properties.
Collapse
Affiliation(s)
- Sang-Hwa Yoon
- Department of Chemical and Biomolecular Engineering (BK-21 Plus)
- KAIST Institute for Nanocentury
- Korea Advanced Institute of Science and Technology
- Daejeon 305-701
- Republic of Korea
| | - Hee-Tae Jung
- Department of Chemical and Biomolecular Engineering (BK-21 Plus)
- KAIST Institute for Nanocentury
- Korea Advanced Institute of Science and Technology
- Daejeon 305-701
- Republic of Korea
| |
Collapse
|
82
|
Dong L, Yang J, Chhowalla M, Loh KP. Synthesis and reduction of large sized graphene oxide sheets. Chem Soc Rev 2017; 46:7306-7316. [DOI: 10.1039/c7cs00485k] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Graphene oxide (GO) can be considered as one of the most visible outcomes of graphene research in terms of large scale production and commercialization prospects.
Collapse
Affiliation(s)
- Lei Dong
- Department of Chemistry and Center for Advanced 2D Materials
- National University of Singapore
- Singapore
| | - Jieun Yang
- Rutgers University
- Department of Materials Science and Engineering
- Piscataway
- NJ 08854
- USA
| | - Manish Chhowalla
- Rutgers University
- Department of Materials Science and Engineering
- Piscataway
- NJ 08854
- USA
| | - Kian Ping Loh
- Department of Chemistry and Center for Advanced 2D Materials
- National University of Singapore
- Singapore
| |
Collapse
|
83
|
Feng Y, Liu L, Zhang J, Aslan H, Dong M. Photoactive antimicrobial nanomaterials. J Mater Chem B 2017; 5:8631-8652. [DOI: 10.1039/c7tb01860f] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Nanomaterials for killing pathogenic bacteria under light irradiation.
Collapse
Affiliation(s)
- Yonghai Feng
- Institute for Advanced Materials
- Jiangsu University
- Zhenjiang 212013
- China
| | - Lei Liu
- Institute for Advanced Materials
- Jiangsu University
- Zhenjiang 212013
- China
| | - Jie Zhang
- Institute for Advanced Materials
- Jiangsu University
- Zhenjiang 212013
- China
| | - Hüsnü Aslan
- Interdisciplinary Nanoscience Center
- Universitas Arhusiensis
- Arhus 8200
- Denmark
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center
- Universitas Arhusiensis
- Arhus 8200
- Denmark
| |
Collapse
|
84
|
Szot-Karpińska K, Golec P, Leśniewski A, Pałys B, Marken F, Niedziółka-Jönsson J, Węgrzyn G, Łoś M. Modified Filamentous Bacteriophage as a Scaffold for Carbon Nanofiber. Bioconjug Chem 2016; 27:2900-2910. [DOI: 10.1021/acs.bioconjchem.6b00555] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Katarzyna Szot-Karpińska
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
- Department
of Molecular Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| | - Piotr Golec
- Laboratory
of Molecular Biology (affiliated with the University of Gdansk), Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Wita Stwosza
59, 80-308 Gdansk, Poland
| | - Adam Leśniewski
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
| | - Barbara Pałys
- Department
of Chemistry, University of Warsaw, Pastuera 1 02-093 Warsaw, Poland
| | - Frank Marken
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Joanna Niedziółka-Jönsson
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
| | - Grzegorz Węgrzyn
- Department
of Molecular Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| | - Marcin Łoś
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
- Department
of Molecular Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| |
Collapse
|
85
|
Shim Y, Han J, Sa YJ, Lee S, Choi K, Oh J, Kim S, Joo SH, Park S. Electrocatalytic performances of heteroatom-containing functionalities in N-doped reduced graphene oxides. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.07.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
86
|
Zhang J, Yang Y, Lou J. Investigation of hexagonal boron nitride as an atomically thin corrosion passivation coating in aqueous solution. NANOTECHNOLOGY 2016; 27:364004. [PMID: 27483462 DOI: 10.1088/0957-4484/27/36/364004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Hexagonal boron nitride (h-BN) atomic layers were utilized as a passivation coating in this study. A large-area continuous h-BN thin film was grown on nickel foil using a chemical vapor deposition method and then transferred onto sputtered copper as a corrosion passivation coating. The corrosion passivation performance in a Na2SO4 solution of bare and coated copper was investigated by electrochemical methods including cyclic voltammetry (CV), Tafel polarization and electrochemical impedance spectroscopy (EIS). CV and Tafel analysis indicate that the h-BN coating could effectively suppress the anodic dissolution of copper. The EIS fitting result suggests that defects are the dominant leakage source on h-BN films, and improved anti-corrosion performances could be achieved by further passivating these defects.
Collapse
Affiliation(s)
- Jing Zhang
- Department of Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA
| | | | | |
Collapse
|
87
|
Voiry D, Yang J, Kupferberg J, Fullon R, Lee C, Jeong HY, Shin HS, Chhowalla M. High-quality graphene via microwave reduction of solution-exfoliated graphene oxide. Science 2016; 353:1413-1416. [PMID: 27708034 DOI: 10.1126/science.aah3398] [Citation(s) in RCA: 268] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 08/23/2016] [Indexed: 01/19/2023]
Abstract
Efficient exfoliation of graphite in solutions to obtain high-quality graphene flakes is desirable for printable electronics, catalysis, energy storage, and composites. Graphite oxide with large lateral dimensions has an exfoliation yield of ~100%, but it has not been possible to completely remove the oxygen functional groups so that the reduced form of graphene oxide (GO; reduced form: rGO) remains a highly disordered material. Here we report a simple, rapid method to reduce GO into pristine graphene using 1- to 2-second pulses of microwaves. The desirable structural properties are translated into mobility values of >1000 square centimeters per volt per second in field-effect transistors with microwave-reduced GO (MW-rGO) as the channel material and into particularly high activity for MW-rGO catalyst support toward oxygen evolution reactions.
Collapse
Affiliation(s)
- Damien Voiry
- Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, USA
| | - Jieun Yang
- Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, USA
| | - Jacob Kupferberg
- Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, USA
| | - Raymond Fullon
- Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, USA
| | - Calvin Lee
- Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, USA
| | - Hu Young Jeong
- Central Research Facilities and School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea
| | - Hyeon Suk Shin
- Department of Chemistry and Department of Energy Engineering, Low Dimensional Carbon Materials, UNIST, Ulsan 689-798, Republic of Korea
| | - Manish Chhowalla
- Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, NJ 08854, USA.
| |
Collapse
|
88
|
Vacchi IA, Spinato C, Raya J, Bianco A, Ménard-Moyon C. Chemical reactivity of graphene oxide towards amines elucidated by solid-state NMR. NANOSCALE 2016; 8:13714-13721. [PMID: 27411370 DOI: 10.1039/c6nr03846h] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Graphene oxide (GO) is an attractive nanomaterial for many applications. Controlling the functionalization of GO is essential for the design of graphene-based conjugates with novel properties. But, the chemical composition of GO has not been fully elucidated yet. Due to the high reactivity of the oxygenated moieties, mainly epoxy, hydroxyl and carboxyl groups, several derivatization reactions may occur concomitantly. The reactivity of GO with amine derivatives has been exploited in the literature to design graphene-based conjugates, mainly through amidation. However, in this study we undoubtedly demonstrate using magic angle spinning (MAS) solid-state NMR that the reaction between GO and amine functions occurs via ring opening of the epoxides, and not by amidation. We also prove that there is a negligible amount of carboxylic acid groups in two GO samples obtained by a different synthesis process, hence eliminating the possibility of amidation reactions with amine derivatives. This work brings additional insights into the chemical reactivity of GO, which is fundamental to control its functionalization, and highlights the major role of MAS NMR spectroscopy for a comprehensive characterization of derivatized GO.
Collapse
Affiliation(s)
- Isabella A Vacchi
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| | - Cinzia Spinato
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| | - Jésus Raya
- Membrane Biophysics and NMR, Institute of Chemistry, UMR 7177, University of Strasbourg, Strasbourg, France
| | - Alberto Bianco
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| | - Cécilia Ménard-Moyon
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Immunopathologie et Chimie Thérapeutique, 67000 Strasbourg, France.
| |
Collapse
|
89
|
Sreedhara M, Gopalakrishnan K, Bharath B, Kumar R, Kulkarni G, Rao C. Properties of nanosheets of 2D-borocarbonitrides related to energy devices, transistors and other areas. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.05.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
90
|
Gudarzi MM. Colloidal Stability of Graphene Oxide: Aggregation in Two Dimensions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5058-68. [PMID: 27143102 DOI: 10.1021/acs.langmuir.6b01012] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Colloidal stability of graphene oxide (GO) is studied in aqueous and organic media accompanied by an improved aggregation model based on Derjaguin-Landau-Verwey- Overbeek (DLVO) theory for ultrathin colloidal flakes. It is found that both magnitude and scaling laws for the van der Waals forces are affected significantly by the two-dimensional (2D) nature of GO. Experimental critical coagulation concentrations (CCC) of GO in monovalent salt solutions concur with DLVO theory prediction. The surface charge density of GO is largely affected by pH. However, theoretical calculations and experimental observations show that the colloidal stability of the 2D colloids is less sensitive to the changes in the surface charge density compared to the classical picture of 3D colloids. The DLVO theory also quantitatively predicts the colloidal stability of reduced GO (rGO). The origin of lower stability of rGO compared to GO is rooted in the higher van der Waals forces among rGO sheets, and particularly, in the removal of negatively charged groups, and possibly formation of some cationic groups during reduction. GO also exfoliates in the polar organic solvents and results in stable dispersions. However, addition of nonpolar solvents perturbs the colloidal stability at a critical volume fraction. Analyzing the aggregation of GO in mixtures of different nonpolar solvents and N-methyl-2-pyrrolidone proposed that the solvents with dielectric constants of less than 24 are not able to host stable colloids of GO. However, dispersions of GO in very polar solvents shows unexpected stability at high concentration (>1 M) of salts and acids. The origin of this stability is most probably solvation forces. A crucial parameter affecting the ability of polar solvents to impart high stability to GO is their molecular size: the bigger they are, the higher the chance for stabilization.
Collapse
Affiliation(s)
- Mohsen Moazzami Gudarzi
- Department of Polymer Engineering and Colour Technology, Amirkabir University of Technology , Tehran 15875-4413, Iran
| |
Collapse
|
91
|
Chua CK, Pumera M. The reduction of graphene oxide with hydrazine: elucidating its reductive capability based on a reaction-model approach. Chem Commun (Camb) 2016; 52:72-5. [PMID: 26525927 DOI: 10.1039/c5cc08170j] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have performed an experimental investigation on the effects of hydrazine treatment on graphene oxide via a reaction-model approach. Hydrazine was reacted with small conjugated aromatic compounds containing various oxygen functional groups to mimic the structure of graphene oxide. The hydroxyl and carboxylic groups were not readily removed while carbonyl groups reacted with hydrazine to form the corresponding hydrazone complexes. In the presence of adjacent hydroxyl groups, carboxyl groups underwent thermal decarboxylation.
Collapse
Affiliation(s)
- Chun Kiang Chua
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| | - Martin Pumera
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| |
Collapse
|
92
|
Narayan R, Kim JE, Kim JY, Lee KE, Kim SO. Graphene Oxide Liquid Crystals: Discovery, Evolution and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3045-68. [PMID: 26928388 DOI: 10.1002/adma.201505122] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Revised: 12/12/2015] [Indexed: 05/20/2023]
Abstract
The discovery and relevant research progress in graphene oxide liquid crystals (GOLCs), the latest class of 2D nanomaterials exhibiting colloidal liquid crystallinity arising from the intrinsic disc-like shape anisotropy, is highlighted. GOLC has conferred a versatile platform for the development of novel properties and applications based on the facile controllability of molecular scale alignment. The first part of this review offers a brief introduction to LCs, including the theoretical background. Particular attention has been paid to the different types of LC phases that have been reported thus far, such as nematic, lamellar and chiral phases. Several key parameters governing the ultimate stability of GOLC behavior, including pH and ionic strength of aqueous dispersions are highlighted. In a relatively short span of time since its discovery, GOLCs have proved their remarkable potential in a broad spectrum of applications, including highly oriented wet-spun fibers, self-assembled nanocomposites, and architectures for energy storage devices. The second part of this review is devoted to an exclusive overview of the relevant applications. Finally, an outlook is provided into this newly emerging research field, where two well established scientific communities for carbon nanomaterials and liquid crystals are ideally merged.
Collapse
Affiliation(s)
- Rekha Narayan
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science & Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Ji Eun Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science & Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Ju Young Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science & Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Kyung Eun Lee
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science & Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Sang Ouk Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science & Engineering, KAIST, Daejeon, 34141, Republic of Korea
| |
Collapse
|
93
|
Okhotnikov K, Charpentier T, Cadars S. Supercell program: a combinatorial structure-generation approach for the local-level modeling of atomic substitutions and partial occupancies in crystals. J Cheminform 2016; 8:17. [PMID: 27042215 PMCID: PMC4818540 DOI: 10.1186/s13321-016-0129-3] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 03/08/2016] [Indexed: 11/15/2022] Open
Abstract
Background Disordered compounds are crucially important for fundamental science and industrial applications. Yet most available methods to explore solid-state material properties require ideal periodicity, which, strictly speaking, does not exist in this type of materials. The supercell approximation is a way to imply periodicity to disordered systems while preserving “disordered” properties at the local level. Although this approach is very common, most of the reported research still uses supercells that are constructed “by hand” and ad-hoc. Results This paper describes a software named supercell, which has been designed to facilitate the construction of structural models for the description of vacancy or substitution defects in otherwise periodically-ordered (crystalline) materials. The presented software allows to apply the supercell approximation systematically with an all-in-one implementation of algorithms for structure manipulation, supercell generation, permutations of atoms and vacancies, charge balancing, detecting symmetry-equivalent structures, Coulomb energy calculations and sampling output configurations. The mathematical and physical backgrounds of the program are presented, along with an explanation of the main algorithms and relevant technical details of their implementation. Practical applications of the program to different types of solid-state materials are given to illustrate some of its potential fields of application. Comparisons of the various algorithms implemented within supercell with similar solutions are presented where possible. Conclusions The all-in-one approach to process point disordered structures, powerful command line interface, excellent performance, flexibility and GNU GPL license make the supercell program a versatile set of tools for disordered structures manipulations. Electronic supplementary material The online version of this article (doi:10.1186/s13321-016-0129-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Kirill Okhotnikov
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France ; CEMHTI - UPR3079 CNRS, Site Haute Température, 1D avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France
| | - Thibault Charpentier
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Sylvian Cadars
- CEMHTI - UPR3079 CNRS, Site Haute Température, 1D avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France ; Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, 2 rue de la Houssinière, BP32229, 44322 Nantes Cedex 3, France
| |
Collapse
|
94
|
Georgakilas V, Tiwari JN, Kemp KC, Perman JA, Bourlinos AB, Kim KS, Zboril R. Noncovalent Functionalization of Graphene and Graphene Oxide for Energy Materials, Biosensing, Catalytic, and Biomedical Applications. Chem Rev 2016; 116:5464-519. [DOI: 10.1021/acs.chemrev.5b00620] [Citation(s) in RCA: 1608] [Impact Index Per Article: 201.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | - Jitendra N. Tiwari
- Center
for Superfunctional Materials, Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - K. Christian Kemp
- Center
for Superfunctional Materials, Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Jason A. Perman
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacky University in Olomouc, 17 Listopadu
1192/12, 771 46 Olomouc, Czech Republic
| | - Athanasios B. Bourlinos
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacky University in Olomouc, 17 Listopadu
1192/12, 771 46 Olomouc, Czech Republic
| | - Kwang S. Kim
- Center
for Superfunctional Materials, Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Radek Zboril
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacky University in Olomouc, 17 Listopadu
1192/12, 771 46 Olomouc, Czech Republic
| |
Collapse
|
95
|
Yang L, Wang Z, Wang J, Jiang W, Jiang X, Bai Z, He Y, Jiang J, Wang D, Yang L. Doxorubicin conjugated functionalizable carbon dots for nucleus targeted delivery and enhanced therapeutic efficacy. NANOSCALE 2016; 8:6801-9. [PMID: 26957191 DOI: 10.1039/c6nr00247a] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Carbon dots (CDs) have shown great potential in imaging and drug/gene delivery applications. In this work, CDs functionalized with a nuclear localization signal peptide (NLS-CDs) were employed to transport doxorubicin (DOX) into cancer cells for enhanced antitumor activity. DOX was coupled to NLS-CDs (DOX-CDs) through an acid-labile hydrazone bond, which was cleavable in the weakly acidic intracellular compartments. The cytotoxicity of DOX-CD complexes was evaluated by the MTT assay and the cellular uptake was monitored using flow cytometry and confocal laser scanning microscopy. Cell imaging confirmed that DOX-CDs were mainly located in the nucleus. Furthermore, the complexes could efficiently induce apoptosis in human lung adenocarcinoma A549 cells. The in vivo therapeutic efficacy of DOX-CDs was investigated in an A549 xenograft nude mice model and the complexes exhibited an enhanced ability to inhibit tumor growth compared with free DOX. Thus, the DOX-CD conjugates may be exploited as promising drug delivery vehicles in cancer therapy.
Collapse
Affiliation(s)
- Lei Yang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China.
| | - Zheran Wang
- Department of Chemistry, University of the Cumberlands, 7000 College Station Drive, Williamsburg, KY 40769, USA
| | - Ju Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China.
| | - Weihua Jiang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China.
| | - Xuewei Jiang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
| | - Zhaoshi Bai
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
| | - Yunpeng He
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China.
| | - Jianqi Jiang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China.
| | - Dongkai Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China.
| | - Li Yang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China.
| |
Collapse
|
96
|
Li XF, Lian KY, Liu L, Wu Y, Qiu Q, Jiang J, Deng M, Luo Y. Unraveling the formation mechanism of graphitic nitrogen-doping in thermally treated graphene with ammonia. Sci Rep 2016; 6:23495. [PMID: 27002190 PMCID: PMC4802320 DOI: 10.1038/srep23495] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 03/07/2016] [Indexed: 11/18/2022] Open
Abstract
Nitrogen-doped graphene (N-graphene) has attractive properties that has been widely studied over the years. However, its possible formation process still remains unclear. Here, we propose a highly feasible formation mechanism of the graphitic-N doing in thermally treated graphene with ammonia by performing ab initio molecular dynamic simulations at experimental conditions. Results show that among the commonly native point defects in graphene, only the single vacancy 5–9 and divacancy 555–777 have the desirable electronic structures to trap N-containing groups and to mediate the subsequent dehydrogenation processes. The local structure of the defective graphene in combining with the thermodynamic and kinetic effect plays a crucial role in dominating the complex atomic rearrangement to form graphitic-N which heals the corresponding defect perfectly. The importance of the symmetry, the localized force field, the interaction of multiple trapped N-containing groups, as well as the catalytic effect of the temporarily formed bridge-N are emphasized, and the predicted doping configuration agrees well with the experimental observation. Hence, the revealed mechanism will be helpful for realizing the targeted synthesis of N-graphene with reduced defects and desired properties.
Collapse
Affiliation(s)
- Xiao-Fei Li
- School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
| | - Ke-Yan Lian
- Division of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Lingling Liu
- School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
| | - Yingchao Wu
- School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
| | - Qi Qiu
- School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Mingsen Deng
- Guizhou Synergetic Innovation Center of Scientific Big Data for Advanced Manufacturing Technology, Guizhou Education University, Guiyang, 550018, China
| | - Yi Luo
- Division of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden.,Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.,Guizhou Synergetic Innovation Center of Scientific Big Data for Advanced Manufacturing Technology, Guizhou Education University, Guiyang, 550018, China
| |
Collapse
|
97
|
Xin L, Yang F, Rasouli S, Qiu Y, Li ZF, Uzunoglu A, Sun CJ, Liu Y, Ferreira P, Li W, Ren Y, Stanciu LA, Xie J. Understanding Pt Nanoparticle Anchoring on Graphene Supports through Surface Functionalization. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02722] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Le Xin
- Department
of Mechanical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States
| | - Fan Yang
- Department
of Mechanical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States
| | - Somaye Rasouli
- Materials
Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yang Qiu
- Department
of Chemical and Biological Engineering, Biorenewables Research Laboratory, Iowa State University, Ames, Iowa 50011, United States
| | - Zhe-Fei Li
- Department
of Mechanical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States
| | - Aytekin Uzunoglu
- School of
Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Cheng-Jun Sun
- Advanced
Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Yuzi Liu
- Center
for Nanoscale Materials, Argonne National Laboratory, 9700 South
Cass Avenue, Argonne, Illinois 60439, United States
| | - Paulo Ferreira
- Materials
Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Wenzhen Li
- Department
of Chemical and Biological Engineering, Biorenewables Research Laboratory, Iowa State University, Ames, Iowa 50011, United States
| | - Yang Ren
- Advanced
Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Lia A. Stanciu
- School of
Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Weldon
School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jian Xie
- Department
of Mechanical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States
| |
Collapse
|
98
|
Elemental superdoping of graphene and carbon nanotubes. Nat Commun 2016; 7:10921. [PMID: 26941178 PMCID: PMC4785233 DOI: 10.1038/ncomms10921] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Accepted: 02/02/2016] [Indexed: 12/23/2022] Open
Abstract
Doping of low-dimensional graphitic materials, including graphene, graphene quantum dots and single-wall carbon nanotubes with nitrogen, sulfur or boron can significantly change their properties. We report that simple fluorination followed by annealing in a dopant source can superdope low-dimensional graphitic materials with a high level of N, S or B. The superdoping results in the following doping levels: (i) for graphene, 29.82, 17.55 and 10.79 at% for N-, S- and B-doping, respectively; (ii) for graphene quantum dots, 36.38 at% for N-doping; and (iii) for single-wall carbon nanotubes, 7.79 and 10.66 at% for N- and S-doping, respectively. As an example, the N-superdoping of graphene can greatly increase the capacitive energy storage, increase the efficiency of the oxygen reduction reaction and induce ferromagnetism. Furthermore, by changing the degree of fluorination, the doping level can be tuned over a wide range, which is important for optimizing the performance of doped low-dimensional graphitic materials. Doping of low-dimensional graphitic materials with heteroatoms can enhance their catalytic, electrochemical and magnetic properties. Here, the authors report a tunable method to ‘superdope' these materials with high levels of nitrogen, sulfur, or boron, via a simple fluorination and annealing procedure.
Collapse
|
99
|
Kim SY, Oh J, Park S, Shim Y, Park S. Production of Metal-Free Composites Composed of Graphite Oxide and Oxidized Carbon Nitride Nanodots and Their Enhanced Photocatalytic Performances. Chemistry 2016; 22:5142-5. [DOI: 10.1002/chem.201505100] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Seung Yeon Kim
- Department of Chemistry and Chemical Engineering; Inha Univeristy; 100 Inha-ro Nam-gu Incheon 402-751 Korea
| | - Junghoon Oh
- Department of Chemistry and Chemical Engineering; Inha Univeristy; 100 Inha-ro Nam-gu Incheon 402-751 Korea
| | - Sunghee Park
- Department of Chemistry and Chemical Engineering; Inha Univeristy; 100 Inha-ro Nam-gu Incheon 402-751 Korea
| | - Yeonjun Shim
- Department of Chemistry and Chemical Engineering; Inha Univeristy; 100 Inha-ro Nam-gu Incheon 402-751 Korea
| | - Sungjin Park
- Department of Chemistry and Chemical Engineering; Inha Univeristy; 100 Inha-ro Nam-gu Incheon 402-751 Korea
| |
Collapse
|
100
|
Zhang X, Ciesielski A, Richard F, Chen P, Prasetyanto EA, De Cola L, Samorì P. Modular Graphene-Based 3D Covalent Networks: Functional Architectures for Energy Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:1044-1052. [PMID: 26763206 DOI: 10.1002/smll.201503677] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Indexed: 06/05/2023]
Abstract
The development of ordered graphene-based materials combining high stability, large surface areas, ability to act as absorbent of relevant chemical species, and solution processability is of significance for energy applications. A poorly explored approach relies on the controlled nanostructuration of graphene into robust and highly ordered 3D networks as a route to further leverage the exceptional properties of this unique material. Here, a simple yet effective and scalable one-step method is reported to prepare graphene-based 3D covalent networks (G3DCNs) with tunable interlayer distance via controlled polymerization of benzidines with graphene oxide at different reaction temperatures under catalyst- and template-free conditions. The reduced form of G3DCNs is used as electrodes in supercapacitors; it reveals a high specific capacitance of 156 F g(-1) at a current density of 1 A g(-1) in a two-electrode configuration and 460 F g(-1) at a current density of 0.5 A g(-1) in a three-electrode configuration, combined with an excellent cycling stability over 5000 cycles. The present study will promote the quantitative understanding of structure-property relationship, for the controlled fabrication of 3D graphene-based multifunctional materials.
Collapse
Affiliation(s)
- Xiaoyan Zhang
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Artur Ciesielski
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Fanny Richard
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Pengkun Chen
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Eko Adi Prasetyanto
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Luisa De Cola
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Paolo Samorì
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| |
Collapse
|