1
|
Manamel LT, Singh A, Saha P, Sathyanarayana S, Bhattacharya S, Das BC. Unveiling Negative Differential Resistance and Superionic Conductivity: Water Anchored on Layered Materials. J Phys Chem Lett 2024; 15:8167-8176. [PMID: 39093126 DOI: 10.1021/acs.jpclett.4c01319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Unravelling the perplexing nature of negative differential resistance (NDR) in 2D transition metal dichalcogenide (2D TMD) devices, especially regarding intrinsic properties, is hindered by experiments conducted in ambient environments. A thorough investigation is essential for unveiling the actual mechanism. In this study, we provide compelling evidence of the NDR effect with a remarkably high peak-to-valley current ratio and proton-diffused superionic conductivity in quantum-confined water molecules anchored to a thin film of 2D TMDs. Our investigation underscores the crucial role of ambient moisture for this robust NDR effect independent of underlying materials used. The bonding of water molecules to the existing sulfur defect sites on 2D TMD nanoflakes facilitates the formation of bridges between two planar metal electrodes, thus enabling superionic in-plane protonic conduction. During electrolysis of chemisorbed water, protons are liberated at the anode and migrate toward the cathode during bias voltage sweeping. Nevertheless, proton diffusion encounters increasing impedance beyond a certain applied bias, thereby restricting current flow even with higher biasing voltages, which is attributed to the interfacial Schottky energy barrier influenced by the Fermi level pinning effect. Our DFT simulations corroborate this mechanism, revealing minimal intermolecular interaction of H+ ions compared to OH- ions at distinct atomic sites on 2D TMD nanoflakes.
Collapse
Affiliation(s)
- Litty Thomas Manamel
- eNDR Lab, School of Physics, IISER Thiruvananthapuram, Vithura, Trivandrum 695551, Kerala, India
| | - Arunima Singh
- Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Puranjay Saha
- eNDR Lab, School of Physics, IISER Thiruvananthapuram, Vithura, Trivandrum 695551, Kerala, India
| | - Sandaap Sathyanarayana
- eNDR Lab, School of Physics, IISER Thiruvananthapuram, Vithura, Trivandrum 695551, Kerala, India
| | - Saswata Bhattacharya
- Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Bikas C Das
- eNDR Lab, School of Physics, IISER Thiruvananthapuram, Vithura, Trivandrum 695551, Kerala, India
| |
Collapse
|
2
|
Saha P, Sahad E M, Sathyanarayana S, Das BC. Solution-Processed Robust Multifunctional Memristor of 2D Layered Material Thin Film. ACS NANO 2024; 18:1137-1148. [PMID: 38127715 DOI: 10.1021/acsnano.3c10775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Memristors have gained significant attention recently due to their unique ability to exhibit functionalities for brain-inspired neuromorphic computing. Here, we demonstrate a high-performance multifunctional memristor using a thin film of liquid-phase exfoliated (LPE) 2D MoS2 pinched between two electrodes. Nanoscale inspection of a solution-processed MoS2 thin film using scanning electron and scanning probe microscopies revealed the high-quality and defect-free nature. Systematic current-voltage (I-V) characterizations depict a facile, nonvolatile resistive switching behavior of our 2D MoS2 thin film device with a current On/Off ratio of 103 and energy cost of only a few picojoules. Excellent performance metrics, including at least 103 cycle endurance, 104 s retention, and switching speed down to a few nanoseconds, reflect robust high-performance data storage capability. Charge carriers trapping and detrapping at the sulfur vacancy defect sites in MoS2 nanosheets mainly display the resistive switching property, supported by the impedance analysis and theoretical fitting results. Multifunctionality is leveraged through implementing two-input logic gate operations, edge computation, and crucial adaptive learning via a Pavlov's dogs experiment. Overall, our solution-processed MoS2 memristor has the potential for tremendous future opportunities in integrated circuits and different computing paradigms, including energy-efficient neuromorphic computing hardware in artificial intelligence.
Collapse
Affiliation(s)
- Puranjay Saha
- eNDR Laboratory, School of Physics, IISER Thiruvananthapuram, Trivandrum 695551, Kerala, India
| | - Muhammed Sahad E
- eNDR Laboratory, School of Physics, IISER Thiruvananthapuram, Trivandrum 695551, Kerala, India
| | - Sandaap Sathyanarayana
- eNDR Laboratory, School of Physics, IISER Thiruvananthapuram, Trivandrum 695551, Kerala, India
| | - Bikas C Das
- eNDR Laboratory, School of Physics, IISER Thiruvananthapuram, Trivandrum 695551, Kerala, India
| |
Collapse
|
3
|
Han T, Song T, Bao Y, Sun Z, Ma Y, He Y, Gan S, Jiang D, Han D, Bobacka J, Niu L. Amperometric response of solid-contact ion-selective electrodes utilizing a two-compartment cell and a redox couple in solution. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
4
|
Ma J, Du Y, Jiang Y, Shen L, Ma H, Lv F, Cui Z, Pan Y, Shi L, Zhu N. Wearable healthcare smart electrochemical biosensors based on co-assembled prussian blue-graphene film for glucose sensing. Mikrochim Acta 2022; 189:46. [PMID: 34985727 DOI: 10.1007/s00604-021-05087-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 10/31/2021] [Indexed: 10/19/2022]
Abstract
Wearable film-based smart biosensors have been developed for real-time biomolecules detection. Particularly, interfacial co-assembly of reduced graphene oxide-prussian blue (PB-RGO) film through electrostatic interaction has been systematically studied by controllable pH values, achieving optimal PB-RGO nanofilms at oil/water (O/W) phase interface driven by minimization of interfacial free energy for wearable biosensors. As a result, as-prepared wearable biosensors of PB-RGO film could be easily woven into fabrics, exhibiting excellent glucose sensing performance in amperometric detection with a sensitivity of 27.78 µA mM-1 cm-2 and a detection limit of 7.94 μM, as well as impressive mechanical robustness of continuously undergoing thousands of bending or twist. Moreover, integrated wearable smartsensing system could realize remotely real-time detection of biomarkers in actual samples of beverages or human sweat via cellphones. Prospectively, interfacial co-assembly engineering driven by pH-induced electrostatic interaction would provide a simple and efficient approach for acquiring functional graphene composites films, and further fabricate wearable smartsensing devices in health monitoring fields.
Collapse
Affiliation(s)
- Junlin Ma
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Yuhang Du
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Yu Jiang
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Liuxue Shen
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Hongting Ma
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Fengjuan Lv
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Zewei Cui
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Yuzhen Pan
- School of Chemical Engineering, Dalian University of Technology, Dalian , 116024, Liaoning, China
| | - Lei Shi
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Nan Zhu
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| |
Collapse
|
5
|
Li L, Wang L, Ye T, Peng H, Zhang Y. Stretchable Energy Storage Devices Based on Carbon Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2005015. [PMID: 33624928 DOI: 10.1002/smll.202005015] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 11/11/2020] [Indexed: 06/12/2023]
Abstract
Stretchable energy storage devices are essential for developing stretchable electronics and have thus attracted extensive attention in a variety of fields including wearable devices and bioelectronics. Carbon materials, e.g., carbon nanotube and graphene, are widely investigated as electrode materials for energy storage devices due to their large specific surface areas and combined remarkable electrical and electrochemical properties. They can also be effectively composited with many other functional materials or designed into different microstructures for fabricating stretchable energy storage devices. This review summarizes recent advances toward the development of carbon-material-based stretchable energy storage devices. An overview of common carbon materials' fundamental properties and general strategies to enable the stretchability of carbon-material-based electrodes are presented. The performances of the as-fabricated stretchable energy storage devices including supercapacitors, lithium-ion batteries, metal-air batteries, and other batteries are then carefully discussed. Challenges and perspectives in this emerging field are finally highlighted for future studies.
Collapse
Affiliation(s)
- Luhe Li
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210023, China
| | - Lie Wang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210023, China
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China
| | - Tingting Ye
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210023, China
| | - Huisheng Peng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China
| | - Ye Zhang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210023, China
| |
Collapse
|
6
|
Wang S, Zhong L, Gan S, Tang Y, Qiu S, Lyu Y, Ma Y, Niu L. Defective vs high-quality graphene for solid-contact ion-selective electrodes: Effects of capacitance and hydrophobicity. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.107091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
|
7
|
Gu S, Xu Z, Yang X. Molecular Insight into the Adsorption Thermodynamics and Interfacial Behavior of GOs at the Liquid-Liquid Interface. J Phys Chem B 2021; 125:1924-1935. [PMID: 33566621 DOI: 10.1021/acs.jpcb.0c10118] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The adsorption of two-dimensional (2-D) graphene oxide (GO) nanosheets at liquid-liquid interfaces has broad technological implications from functional material preparations to oil-water emulsification. Molecular-level understanding of the adsorption thermodynamics and the interfacial behavior is of great significance. Here, the adsorption free energy of GO nanosheets at the water-cyclohexane system was simulated, in which the effect of oxygen-containing groups and deprotonation has been investigated. It was observed that the neutral GO (GO-COOH) has obvious interfacial activity with a reduction of interfacial tension, while the deprotonated GO (GO-COO-) shows a weak interface affinity. There exists an optimal oxidization degree that could cause the best interfacial stability, which is attributed to the balance of interfacial hydrophilic-hydrophobic interactions. The interaction arising from water is the main factor determining interfacial activity. The interfacial morphology and dynamics of GO nanosheets have also been simulated, in which an anisotropic 2-D translation and rotation along the interface were revealed. Our simulation results provide new insight into the adsorption mechanism and dynamics behavior of GO at the oil-water interface.
Collapse
Affiliation(s)
- Shuyin Gu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Zhijun Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Xiaoning Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| |
Collapse
|
8
|
Neilson J, Avery MP, Derby B. Tiled Monolayer Films of 2D Molybdenum Disulfide Nanoflakes Assembled at Liquid/Liquid Interfaces. ACS APPLIED MATERIALS & INTERFACES 2020; 12:25125-25134. [PMID: 32383852 PMCID: PMC7303965 DOI: 10.1021/acsami.0c03794] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
Thin films of MoS2 bilayer nanoflakes, which are predominantly a single flake thick and with flakes in edge-to-edge contact, have been produced via self-assembled tiling at the planar interface between two immiscible liquids. Films of several square centimeters extent can be produced with a total covered area approaching 90% and over 70% of the film covered by single flakes without overlap. Films produced through liquid/liquid assembly are shown to produce a lower uncovered area fraction and more uniform thickness when compared with films of similar areal coverage produced by the "top-down" techniques of spin coating and spray coating. Statistical analysis of flake coverage data, measured by atomic force microscopy (AFM), shows that liquid/liquid assembly produces a distinctly different variation in film thickness than conventional top-down deposition. This supports the hypothesis that the two-dimensional (2D) confinement of liquid/liquid assembly produces more uniform films. Demonstrator field-effect transistors (FETs) manufactured from the films exhibit mobility and on/off current ratios of 0.73 cm2 V-1 s-1 and 105, respectively, comparable to FETs of similar layout and chemical vapor deposition (CVD)-grown or mechanically cleaved single-crystal MoS2 channel material. This work demonstrates the use of liquid/liquid interfaces as a useful tool for the self-assembly of high-performance thin-film devices made from dispersions of 2D materials.
Collapse
|
9
|
Tang Y, Liang M, Zhang M, Honarfar A, Zou X, Abdellah M, Pullerits T, Zheng K, Chi Q. Photodetector Based on Spontaneously Grown Strongly Coupled MAPbBr 3/N-rGO Hybrids Showing Enhanced Performance. ACS APPLIED MATERIALS & INTERFACES 2020; 12:858-867. [PMID: 31820629 DOI: 10.1021/acsami.9b18598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Recently, metal-halide perovskites have emerged as a candidate for optoelectronic applications such as photodetectors. However, the poor device performance and instability have limited their future commercialization. Herein, we report the spontaneous growth of perovskite/N-rGO hybrid structures using a facile solution method and their applications for photodetectors. In the hybrid structures, perovskites were homogeneously wrapped by N-rGO sheets through strong hydrogen bonding. The strongly coupled N-rGOs facilitate the charge carrier transportation across the perovskite crystals but also distort the surface lattice of the perovskite creating a potential barrier for charge transfer. We optimize the addition of N-rGO in the hybrid structures to balance interfacial structural distortion and the intercrystal conductivity. High-performance photodetection up to 3 × 104 A/W, external quantum efficiency exceeding 105%, and detectivity up to 1012 Jones were achieved in the optimal device with the weight ratio between perovskites and N-rGO to be 8:1.5. The underlying mechanism behind the optimal N-rGO addition ratio in the hybrids has also been rationalized via time-resolved spectroscopic studies as a reference for future applications.
Collapse
Affiliation(s)
- Yingying Tang
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
| | - Mingli Liang
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
| | - MinWei Zhang
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
| | - Alireza Honarfar
- Department of Chemical Physics and NanoLund , Lund University , Box 124, 22100 Lund , Sweden
| | - Xianshao Zou
- Department of Chemical Physics and NanoLund , Lund University , Box 124, 22100 Lund , Sweden
| | - Mohamed Abdellah
- Department of Chemical Physics and NanoLund , Lund University , Box 124, 22100 Lund , Sweden
- Department of Chemistry, Qena Faculty of Science , South Valley University , 83523 Qena , Egypt
| | - Tönu Pullerits
- Department of Chemical Physics and NanoLund , Lund University , Box 124, 22100 Lund , Sweden
| | - Kaibo Zheng
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
- Department of Chemical Physics and NanoLund , Lund University , Box 124, 22100 Lund , Sweden
| | - Qijin Chi
- Department of Chemistry , Technical University of Denmark , DK-2800 Kongens Lyngby , Denmark
| |
Collapse
|
10
|
Mir A, Abhilesh GN, Tamgadge RM, Shukla A. Capacitance of graphene films: effect of the number of layers of the constituent graphene flakes. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04344-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
11
|
Tang J, Werchmeister RML, Preda L, Huang W, Zheng Z, Leimkühler S, Wollenberger U, Xiao X, Engelbrekt C, Ulstrup J, Zhang J. Three-Dimensional Sulfite Oxidase Bioanodes Based on Graphene Functionalized Carbon Paper for Sulfite/O2 Biofuel Cells. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01715] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jing Tang
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | | | - Loredana Preda
- Department of Molecular Enzymology, University of Potsdam, 14476 Potsdam−Golm, Germany
- Institute of Physical Chemistry of the Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania
| | - Wei Huang
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Zhiyong Zheng
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Silke Leimkühler
- Department of Molecular Enzymology, University of Potsdam, 14476 Potsdam−Golm, Germany
| | - Ulla Wollenberger
- Department of Molecular Enzymology, University of Potsdam, 14476 Potsdam−Golm, Germany
| | - Xinxin Xiao
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Christian Engelbrekt
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Jens Ulstrup
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Jingdong Zhang
- Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| |
Collapse
|
12
|
Dang F, Yang P, Zhao W, Liu JZ, Wu H, Liu A, Liu Y. Tuning capacitance of graphene films via a robust routine of adjusting their hierarchical structures. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.12.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
13
|
Gao H, Wang J, Jia M, Chen X, Andriamitantsoa RS, Liu P. Two-phase interface-facilitated synthesis of graphene-like carbon nanosheets and their interfacial assembly behaviors. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
14
|
Liu B, Meng Z, Wu S, Wu Y, Zhang S. Separating and enhancing the green and red emissions of NaYF 4:Yb 3+/Er 3+ by sandwiching them into photonic crystals with different bandgaps. NANOSCALE HORIZONS 2018; 3:616-623. [PMID: 32254114 DOI: 10.1039/c8nh00136g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Rational control of the multiple emission outputs and achieving single-band and strong luminescence of Ln3+ doped upconversion nanoparticles is highly desirable for their applications in sensor and display fields. Here, we designed a sandwich structure to separate and enhance the green and red emission of NaYF4:Yb3+/Er3+ simultaneously and realized pure strong green and red emissions. NaYF4:Yb3+/Er3+ nanocrystals were sandwiched between two layers of photonic crystals, which have bandgaps at 660 nm and 530 nm, respectively. The photonic crystal with a bandgap at 530 nm on top of the NaYF4:Yb3+/Er3+ layer can filter the green emission of NaYF4:Yb3+/Er3+, prohibiting its emission upward, and at the same time, enhancing its emission downward. Similarly, the photonic crystal with a bandgap at 660 nm can prohibit the transmission of the red emission, and at the same time enhance its reflection in the opposite direction. Consequently, enhanced green emission was observed from the bottom of the sandwich structure and enhanced red emission was observed from the top of the sandwich structure. Thus, the green and red emissions of NaYF4:Yb3+/Er3+ were separated and both of them were enhanced. On the other hand, when using a photonic crystal with a bandgap that overlapped with the excitation light of NaYF4:Yb3+/Er3+ nanoparticles, their emissions were all greatly enhanced. Our results suggest that photonic crystals are good candidates to separate and enhance the emissions of Ln3+ doped luminescent materials.
Collapse
Affiliation(s)
- Baoqi Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China.
| | | | | | | | | |
Collapse
|
15
|
Gao L, Gan S, Li H, Han D, Li F, Bao Y, Niu L. Self-assembling graphene-anthraquinone-2-sulphonate supramolecular nanostructures with enhanced energy density for supercapacitors. NANOTECHNOLOGY 2017; 28:275602. [PMID: 28513475 DOI: 10.1088/1361-6528/aa73b1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Boosting the energy density of capacitive energy storage devices remains a crucial issue for facilitating applications. Herein, we report a graphene-anthraquinone supramolecular nanostructure by self-assembly for supercapacitors. The sulfonated anthraquinone exhibits high water solubility, a π-conjugated structure and redox active features, which not only serve as a spacer to interact with and stabilize graphene but also introduce extra pseudocapacitance contributions. The formed nest-like three-dimensional (3D) nanostructure with further hydrothermal treatment enhances the accessibility of ion transfer and exposes the redox-active quinone groups in the electrolytes. A fabricated all-solid-state flexible symmetric device delivers a high specific capacitance of 398.5 F g-1 at 1 A g-1 (1.5 times higher than graphene), superior energy density (52.24 Wh kg-1 at about 1 kW kg-1) and good stability (82% capacitance retention after 10 000 cycles).
Collapse
Affiliation(s)
- Lifang Gao
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, CAS Center for Excellence in Nanoscience, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, People's Republic of China. University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
16
|
Xia L, Pan L, Asif M, Zhang D, Usman M, Yang S, Zhou N, Hu Y, Bin Y. Facile fabrication of polyaniline@γ-MnOOH on a buckypaper ternary composite electrode for free-standing supercapacitors. RSC Adv 2017. [DOI: 10.1039/c7ra08431e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Ternary composites as electrode materials have attracted extensive attention. Herein, we demonstrated a facile two-step method to construct a new hierarchical nanocomposite by combing buckypaper (BP) with γ-MnOOH nanorods and polyaniline.
Collapse
Affiliation(s)
- Lichen Xia
- School of Physics
- Dalian University of Technology
- Dalian 116024
- PR China
| | - Lujun Pan
- School of Physics
- Dalian University of Technology
- Dalian 116024
- PR China
| | - Muhammad Asif
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing 100871
- China
| | - Dongmei Zhang
- School of Physics
- Dalian University of Technology
- Dalian 116024
- PR China
| | - Muhammad Usman
- School of Physics
- Dalian University of Technology
- Dalian 116024
- PR China
| | - Shuaitao Yang
- School of Physics
- Dalian University of Technology
- Dalian 116024
- PR China
| | - Nan Zhou
- School of Physics
- Dalian University of Technology
- Dalian 116024
- PR China
| | - Yunping Hu
- Department of Polymer Science and Engineering
- Faculty of Chemical, Environmental and Biological Science and Technology
- Dalian University of Technology
- Dalian 116024
- PR China
| | - Yuezhen Bin
- Department of Polymer Science and Engineering
- Faculty of Chemical, Environmental and Biological Science and Technology
- Dalian University of Technology
- Dalian 116024
- PR China
| |
Collapse
|
17
|
Toth PS, Velický M, Bissett MA, Slater TJA, Savjani N, Rabiu AK, Rakowski AM, Brent JR, Haigh SJ, O'Brien P, Dryfe RAW. Asymmetric MoS 2 /Graphene/Metal Sandwiches: Preparation, Characterization, and Application. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8256-8264. [PMID: 27461734 DOI: 10.1002/adma.201600484] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 04/04/2016] [Indexed: 06/06/2023]
Abstract
The polarizable organic/water interface is used to construct MoS2 /graphene nanocomposites, and various asymmetrically dual-decorated graphene sandwiches are synthesized. High-resolution transmission electron microscopy and 3D electron tomography confirm their structure. These dual-decorated graphene-based hybrids show excellent hydrogen evolution activity and promising capacitance performance.
Collapse
Affiliation(s)
- Peter S Toth
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
| | - Matĕj Velický
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Mark A Bissett
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Thomas J A Slater
- School of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Nicky Savjani
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Aminu K Rabiu
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Alexander M Rakowski
- School of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Jack R Brent
- School of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Sarah J Haigh
- School of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Paul O'Brien
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
- School of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Robert A W Dryfe
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
| |
Collapse
|
18
|
Shao Y, El-Kady MF, Lin CW, Zhu G, Marsh KL, Hwang JY, Zhang Q, Li Y, Wang H, Kaner RB. 3D Freeze-Casting of Cellular Graphene Films for Ultrahigh-Power-Density Supercapacitors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:6719-26. [PMID: 27214752 DOI: 10.1002/adma.201506157] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 04/08/2016] [Indexed: 05/23/2023]
Abstract
3D cellular graphene films with open porosity, high electrical conductivity, and good tensile strength, can be synthesized by a method combining freeze-casting and filtration. The resulting supercapacitors based on 3D porous reduced graphene oxide (RGO) film exhibit extremely high specific power densities and high energy densities. The fabrication process provides an effective means for controlling the pore size, electronic conductivity, and loading mass of the electrode materials, toward devices with high energy-storage performance.
Collapse
Affiliation(s)
- Yuanlong Shao
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Maher F El-Kady
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Cheng-Wei Lin
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Guanzhou Zhu
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Kristofer L Marsh
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Jee Youn Hwang
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
| | - Qinghong Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yaogang Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hongzhi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Richard B Kaner
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
- Department of Materials Science and Engineering, UCLA, Los Angeles, CA, 90095, USA
| |
Collapse
|
19
|
Jin L, Wu D, Kuddannaya S, Zhang Y, Wang Z. Fabrication, Characterization, and Biocompatibility of Polymer Cored Reduced Graphene Oxide Nanofibers. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5170-5177. [PMID: 26836319 DOI: 10.1021/acsami.6b00243] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Graphene nanofibers have shown a promising potential across a wide spectrum of areas, including biology, energy, and the environment. However, fabrication of graphene nanofibers remains a challenging issue due to the broad size distribution and extremely poor solubility of graphene. Herein, we report a facile yet efficient approach for fabricating a novel class of polymer core-reduced graphene oxide shell nanofiber mat (RGO-CSNFM) by direct heat-driven self-assembly of graphene oxide sheets onto the surface of electrospun polymeric nanofibers without any requirement of surface treatment. Thus-prepared RGO-CSNFM demonstrated excellent mechanical, electrical, and biocompatible properties. RGO-CSNFM also promoted a higher cell anchorage and proliferation of human bone marrow mesenchymal stem cells (hMSCs) compared to the free-standing RGO film without the nanoscale fibrous structure. Further, cell viability of hMSCs was comparable to that on the tissue culture plates (TCPs) with a distinctive healthy morphology, indicating that the nanoscale fibrous architecture plays a critically constructive role in supporting cellular activities. In addition, the RGO-CSNFM exhibited excellent electrical conductivity, making them an ideal candidate for conductive cell culture, biosensing, and tissue engineering applications. These findings could provide a new benchmark for preparing well-defined graphene-based nanomaterial configurations and interfaces for biomedical applications.
Collapse
Affiliation(s)
- Lin Jin
- The Key Laboratory of Rare Earth Functional Materials and Applications, Zhoukou Normal University , Zhoukou 466001, P. R. China
- School of Mechanical & Aerospace Engineering, Nanyang Technological University , 50 Nanyang Avenue, 639798, Singapore
| | - Dingcai Wu
- Materials Science Institute, PCFM Lab and DSAPM Lab, School of Chemistry and Chemical Engineering, Sun Yat-sen University , Guangzhou 510275, P. R. China
| | - Shreyas Kuddannaya
- School of Mechanical & Aerospace Engineering, Nanyang Technological University , 50 Nanyang Avenue, 639798, Singapore
| | - Yilei Zhang
- School of Mechanical & Aerospace Engineering, Nanyang Technological University , 50 Nanyang Avenue, 639798, Singapore
| | - Zhenling Wang
- The Key Laboratory of Rare Earth Functional Materials and Applications, Zhoukou Normal University , Zhoukou 466001, P. R. China
| |
Collapse
|
20
|
Olsen G, Ulstrup J, Chi Q. Crown-Ether Derived Graphene Hybrid Composite for Membrane-Free Potentiometric Sensing of Alkali Metal Ions. ACS APPLIED MATERIALS & INTERFACES 2016; 8:37-41. [PMID: 26703780 DOI: 10.1021/acsami.5b11597] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report the design and synthesis of newly functionalized graphene hybrid material that can be used for selective membrane-free potentiometric detection of alkali metal ions, represented by potassium ions. Reduced graphene oxide (RGO) functionalized covalently by 18-crown[6] ether with a dense surface coverage is achieved by the introduction of a flexible linking molecule. The resulting hybrid composite is highly stable and is capable of detecting potassium ions down to micromolar ranges with a selectivity over other cations (including Ca(2+), Li(+), Na(+), NH4(+)) at concentrations up to 25 mM. This material can be combined further with disposable chips, demonstrating its promise as an effective ion-selective sensing component for practical applications.
Collapse
Affiliation(s)
- Gunnar Olsen
- Department of Chemistry, Technical University of Denmark , DK-2800 Kongens Lyngby, Denmark
| | - Jens Ulstrup
- Department of Chemistry, Technical University of Denmark , DK-2800 Kongens Lyngby, Denmark
| | - Qijin Chi
- Department of Chemistry, Technical University of Denmark , DK-2800 Kongens Lyngby, Denmark
| |
Collapse
|
21
|
Wu C, Jiu J, Araki T, Koga H, Sekitani T, Wang H, Suganuma K. Rapid self-assembly of ultrathin graphene oxide film and application to silver nanowire flexible transparent electrodes. RSC Adv 2016. [DOI: 10.1039/c5ra24896e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A self-assembled ultrathin graphene oxide film was rapidly prepared within only 3 minutes to improve silver nanowire electrode performance.
Collapse
Affiliation(s)
- Chunhui Wu
- The Institute of Scientific and Industrial Research
- Osaka University
- Ibaraki
- Japan
| | - Jinting Jiu
- The Institute of Scientific and Industrial Research
- Osaka University
- Ibaraki
- Japan
| | - Teppei Araki
- The Institute of Scientific and Industrial Research
- Osaka University
- Ibaraki
- Japan
| | - Hirotaka Koga
- The Institute of Scientific and Industrial Research
- Osaka University
- Ibaraki
- Japan
| | - Tsuyoshi Sekitani
- The Institute of Scientific and Industrial Research
- Osaka University
- Ibaraki
- Japan
| | - Hao Wang
- The College of Materials Science and Engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Katsuaki Suganuma
- The Institute of Scientific and Industrial Research
- Osaka University
- Ibaraki
- Japan
| |
Collapse
|
22
|
Fan Y, Huang Y, Jiang Y, Ning X, Wang X, Shan D, Lu X. Comparative study on the interfacial electron transfer of zinc porphyrins with meso-π-extension at a 2 n pattern. J Colloid Interface Sci 2016; 462:100-9. [DOI: 10.1016/j.jcis.2015.09.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 09/17/2015] [Accepted: 09/24/2015] [Indexed: 11/25/2022]
|
23
|
Gan S, Zhong L, Han D, Niu L, Chi Q. Probing Bio-Nano Interactions between Blood Proteins and Monolayer-Stabilized Graphene Sheets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5814-5825. [PMID: 26413807 DOI: 10.1002/smll.201501819] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/25/2015] [Indexed: 06/05/2023]
Abstract
Meeting proteins is regarded as the starting event for nanostructures to enter biological systems. Understanding their interactions is thus essential for a newly emerging field, nanomedicine. Chemically converted graphene (CCG) is a wonderful two-dimensional (2D) material for nanomedicine, but its stability in biological environments is limited. Systematic probing on the binding of proteins to CCG is currently lacking. Herein, we report a comprehensive study on the interactions between blood proteins and stabilized CCG (sCCG). CCG nanosheets are functionalized by monolayers of perylene leading to significant improvement in their resistance to electrolyte salts and long-term stability, but retain their core structural characteristics. Five types of model human blood proteins including human fibrinogen, γ-globulin, bovine serum albumin (BSA), insulin, and histone are tested. The main driving forces for blood protein binding involve the π-π interacations between the π-plane of sCCG and surface aromatic amonic acid (sAA) residues of proteins. Several key binding parameters including the binding amount, Hill coefficient, and binding constant are determined. Through a detailed analysis of key controlling factors, we conclude that the protein binding to sCCG is determined mainly by the protein size, the number, and the density of the sAA.
Collapse
Affiliation(s)
- Shiyu Gan
- Department of Chemistry, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
- Engineering Laboratory for Modern Analytical Techniques c/o State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Lijie Zhong
- Engineering Laboratory for Modern Analytical Techniques c/o State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Dongxue Han
- Engineering Laboratory for Modern Analytical Techniques c/o State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Li Niu
- Engineering Laboratory for Modern Analytical Techniques c/o State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Qijin Chi
- Department of Chemistry, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
| |
Collapse
|
24
|
Toth P, Rabiu A, Dryfe R. Controlled preparation of carbon nanotube-conducting polymer composites at the polarisable organic/water interface. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.08.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
25
|
Li F, Gan S, Han D, Niu L. Graphene-Based Nanohybrids for Advanced Electrochemical Sensing. ELECTROANAL 2015. [DOI: 10.1002/elan.201500217] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
26
|
Li Z, Liu Z, Sun H, Gao C. Superstructured Assembly of Nanocarbons: Fullerenes, Nanotubes, and Graphene. Chem Rev 2015; 115:7046-117. [PMID: 26168245 DOI: 10.1021/acs.chemrev.5b00102] [Citation(s) in RCA: 232] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zheng Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310007, China
| | - Zheng Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310007, China
| | - Haiyan Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310007, China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310007, China
| |
Collapse
|
27
|
Zhu N, Zheng K, Karki KJ, Abdellah M, Zhu Q, Carlson S, Haase D, Žídek K, Ulstrup J, Canton SE, Pullerits T, Chi Q. Sandwiched confinement of quantum dots in graphene matrix for efficient electron transfer and photocurrent production. Sci Rep 2015; 5:9860. [PMID: 25996307 PMCID: PMC4649995 DOI: 10.1038/srep09860] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 03/24/2015] [Indexed: 12/21/2022] Open
Abstract
Quantum dots (QDs) and graphene are both promising materials for the development of new-generation optoelectronic devices. Towards this end, synergic assembly of these two building blocks is a key step but remains a challenge. Here, we show a one-step strategy for organizing QDs in a graphene matrix via interfacial self-assembly, leading to the formation of sandwiched hybrid QD-graphene nanofilms. We have explored structural features, electron transfer kinetics and photocurrent generation capacity of such hybrid nanofilms using a wide variety of advanced techniques. Graphene nanosheets interlink QDs and significantly improve electronic coupling, resulting in fast electron transfer from photoexcited QDs to graphene with a rate constant of 1.3 × 10(9) s(-1). Efficient electron transfer dramatically enhances photocurrent generation in a liquid-junction QD-sensitized solar cell where the hybrid nanofilm acts as a photoanode. We thereby demonstrate a cost-effective method to construct large-area QD-graphene hybrid nanofilms with straightforward scale-up potential for optoelectronic applications.
Collapse
Affiliation(s)
- Nan Zhu
- Department of Chemistry, Technical University of Denmark, Kemitorvet Building 207, DK-2800 Kongens Lyngby, Denmark
| | - Kaibo Zheng
- Department of Chemical Physics, Lund University, Box 124, 22100, Lund, Sweden
| | - Khadga J. Karki
- Department of Chemical Physics, Lund University, Box 124, 22100, Lund, Sweden
| | - Mohamed Abdellah
- Department of Chemical Physics, Lund University, Box 124, 22100, Lund, Sweden
- Department of Chemistry, Faculty of Science, South valley University, Qena 83523, Egypt
| | - Qiushi Zhu
- The MAX IV Laboratory, Lund University, Box 124, 22100, Lund, Sweden
| | - Stefan Carlson
- The MAX IV Laboratory, Lund University, Box 124, 22100, Lund, Sweden
| | - Dörthe Haase
- The MAX IV Laboratory, Lund University, Box 124, 22100, Lund, Sweden
| | - Karel Žídek
- Department of Chemical Physics, Lund University, Box 124, 22100, Lund, Sweden
| | - Jens Ulstrup
- Department of Chemistry, Technical University of Denmark, Kemitorvet Building 207, DK-2800 Kongens Lyngby, Denmark
| | - Sophie E. Canton
- The MAX IV Laboratory, Lund University, Box 124, 22100, Lund, Sweden
| | - Tõnu Pullerits
- Department of Chemical Physics, Lund University, Box 124, 22100, Lund, Sweden
| | - Qijin Chi
- Department of Chemistry, Technical University of Denmark, Kemitorvet Building 207, DK-2800 Kongens Lyngby, Denmark
| |
Collapse
|
28
|
Toth PS, Rodgers AN, Rabiu AK, Dryfe RA. Electrochemical activity and metal deposition using few-layer graphene and carbon nanotubes assembled at the liquid–liquid interface. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2014.10.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
29
|
Shao Y, El-Kady MF, Wang LJ, Zhang Q, Li Y, Wang H, Mousavi MF, Kaner RB. Graphene-based materials for flexible supercapacitors. Chem Soc Rev 2015; 44:3639-65. [DOI: 10.1039/c4cs00316k] [Citation(s) in RCA: 870] [Impact Index Per Article: 96.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The recent advances in developing graphene-based materials for flexible supercapacitors are summarized in this review.
Collapse
Affiliation(s)
- Yuanlong Shao
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Maher F. El-Kady
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Lisa J. Wang
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Qinghong Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Material Science and Engineering
- Donghua University
- Shanghai
- China
| | - Yaogang Li
- Engineering Research Center of Advanced Glasses Manufacturing Technology
- Ministry of Education
- Donghua University
- Shanghai
- China
| | - Hongzhi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Material Science and Engineering
- Donghua University
- Shanghai
- China
| | - Mir F. Mousavi
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Richard B. Kaner
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| |
Collapse
|
30
|
Toth PS, Ramasse QM, Velický M, Dryfe RAW. Functionalization of graphene at the organic/water interface. Chem Sci 2014; 6:1316-1323. [PMID: 29560218 PMCID: PMC5811094 DOI: 10.1039/c4sc03504f] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 11/20/2014] [Indexed: 12/05/2022] Open
Abstract
A simple method for the deposition of noble metal (Pd, Au) nanoparticles on a free-standing chemical vapour deposited graphene monolayer is reported. Metal deposition can proceed using either spontaneous or electrochemically-controlled processes. The resultant nanoclusters are characterized using atomic force and electron microscopy techniques, and mapping mode Raman spectroscopy.
A simple method for the deposition of noble metal (Pd, Au) nanoparticles on a free-standing chemical vapour deposited graphene (CVD GR) monolayer is reported. The method consists of assembling the high purity CVD GR, by transfer from poly (methyl methacrylate) (PMMA), at the organic/water interface. Metal deposition can then proceed using either spontaneous or electrochemically-controlled processes. The resultant graphene-based metal nanoclusters are characterized using atomic force and electron microscopy techniques, and the location of the nanostructures underneath the graphene layer is determined from the position and the intensity changes of the Raman bands (D, G, 2D). This novel process for decoration of a single-layer graphene sheet with metal nanoparticles using liquid/liquid interfaces opens an alternative and useful way to prepare low dimensional carbon-based nanocomposites and electrode materials.
Collapse
Affiliation(s)
- Peter S Toth
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK . ; Tel: +44 (0)161-306-4522
| | - Quentin M Ramasse
- SuperSTEM Laboratory , STFC Daresbury Campus , Daresbury WA4 4AD , UK
| | - Matěj Velický
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK . ; Tel: +44 (0)161-306-4522
| | - Robert A W Dryfe
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK . ; Tel: +44 (0)161-306-4522
| |
Collapse
|
31
|
Bai YF, Zhang YF, Zhou AW, Li HW, Zhang Y, Luong JHT, Cui HF. Self-assembly of a thin highly reduced graphene oxide film and its high electrocatalytic activity. NANOTECHNOLOGY 2014; 25:405601. [PMID: 25211178 DOI: 10.1088/0957-4484/25/40/405601] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A thin highly reduced graphene oxide (rGO) film was self-assembled at the dimethyl formamide (DMF)-air interface through evaporation-induced water-assisted thin film formation at the pentane-DMF interface, followed by complete evaporation of pentane. The thin film was transferred onto various solid substrates for film characterization and electrochemical sensing. UV-visible spectrometry, scanning electron microscopy (SEM), atomic force microscopy (AFM) and electrochemistry techniques were used to characterize the film. An rGO film showing 82.8% of the transmittance at 550 nm corresponds to a few layers of rGO nanosheets. The rGO nanosheets cross-stack with each other, lying approximately in the plane of the film. An rGO film collected on a glassy carbon (GC) electrode exhibited improved electrical conductivity compared to GC, with the electrode charge-transfer resistance (Rct) reduced from 31 Ω to 22 Ω. The as-formed rGO/GC electrode was mechanically very stable, exhibiting significantly enhanced electrocatalytic activity to H(2)O(2) and dopamine. Multiple layers of the rGO films on the GC electrode showed even stronger electrocatalytic activity to dopamine than that of the single rGO film layer. The controllable formation of a stable rGO film on various solid substrates has potential applications for nanoelectronics and sensors/biosensors.
Collapse
Affiliation(s)
- Yan-Feng Bai
- School of Life Sciences, Zhengzhou University, 100♯ Science Avenue, Zhengzhou, 450001, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
32
|
Thin and transparent films of graphene/silver nanoparticles obtained at liquid-liquid interfaces: preparation, characterization and application as SERS substrates. J Colloid Interface Sci 2014; 438:29-38. [PMID: 25454422 DOI: 10.1016/j.jcis.2014.09.068] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 08/26/2014] [Accepted: 09/25/2014] [Indexed: 11/23/2022]
Abstract
We report here the synthesis and characterization of transparent and homogeneous thin films of reduced graphene oxide/silver nanoparticles (rGO/AgNPs) nanocomposites, starting from graphene oxide (GO) or reduced graphene oxide (rGO), directly obtained at a water/toluene liquid-liquid interface. Different films (obtained by varying the Ag/rGO or Ag/GO ratio) were prepared, deposited over glass or plastic substrates, and characterized by X-ray diffraction, UV-Vis and Raman spectroscopy, thermal analysis, transmission and scanning electron microscopy. Samples were evaluated as substrates for surface-enhanced Raman spectroscopy (SERS), using dilute solutions (1×10(-7) mol L(-1)) of a common probe molecule, 4-aminothiophenol (4-ATP). These materials exhibit significant high-quality SERS activity, and enhanced modes could be observed for 4-ATP, which suggested that charge transfer occurred between the Ag nanoparticles and 4-ATP molecules.
Collapse
|
33
|
Gan S, Zhong L, Engelbrekt C, Zhang J, Han D, Ulstrup J, Chi Q, Niu L. Graphene controlled H- and J-stacking of perylene dyes into highly stable supramolecular nanostructures for enhanced photocurrent generation. NANOSCALE 2014; 6:10516-10523. [PMID: 25089855 DOI: 10.1039/c4nr02308k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report a new method for controlling H- and J-stacking in supramolecular self-assembly. Graphene nanosheets act as structure inducers to direct the self-assembly of a versatile organic dye, perylene into two distinct types of functional nanostructures, i.e. one-dimensional nanotubes via J-stacking and two-dimensional branched nanobuds through H-stacking. Graphene integrated supramolecular nanocomposites are highly stable and show significant enhancement of photocurrent generation in these two configurations of photosensing devices, i.e. solid-state optoelectronic constructs and liquid-junction solar cells.
Collapse
Affiliation(s)
- Shiyu Gan
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Changchun 130022, Beijing 100049, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Hou C, Wang H, Zhang Q, Li Y, Zhu M. Highly conductive, flexible, and compressible all-graphene passive electronic skin for sensing human touch. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5018-5024. [PMID: 24890343 DOI: 10.1002/adma.201401367] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 04/22/2014] [Indexed: 06/03/2023]
Abstract
A facile and passive multiply flexible thin-film sensor is demonstrated based on thermoelectric effects in graphene. The sensor is highly conductive, free-standing, flexible, and elastic. It senses heat and cold, and measures heated/cooled areas; it also discerns human touch from other pressures, locates human touch, and measures pressure levels. All of these sensing abilities are demonstrated without any internal/external power supply.
Collapse
Affiliation(s)
- Chengyi Hou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | | | | | | | | |
Collapse
|
35
|
Xu L, Xia J, Wang L, Qian J, Li H, Wang K, Sun K, He M. α-Fe2O3Cubes with High Visible-Light-Activated Photoelectrochemical Activity towards Glucose: Hydrothermal Synthesis Assisted by a Hydrophobic Ionic Liquid. Chemistry 2014; 20:2244-53. [DOI: 10.1002/chem.201304312] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Indexed: 11/08/2022]
|
36
|
Maiti S, Sanyal MK, Varghese N, Satpati B, Dasgupta D, Daillant J, Carriere D, Konovolov O, Rao CNR. Formation of single-crystalline CuS at the organic-aqueous interface. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:395401. [PMID: 23999145 DOI: 10.1088/0953-8984/25/39/395401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report here the results of a study to understand the formation mechanism of single crystals of the transition metal chalcogenide, CuS, at the water-toluene interface through an interfacial reaction. Systematic measurements carried out using synchrotron x-ray scattering, electron microscopy, atomic force microscopy and calorimetric techniques clearly show that nano-crystallites of CuS form within a few minutes at the interface as the reagents are brought from the organic (upper) and aqueous (lower) layers to the interface, then crystallization of CuS proceeds over a few hours only by reorganization, despite the large excess available in both upper and lower liquid phases. The interface confinement and passivation by organics is critical here in the formation of single crystals having sizes of 6 and 200 nm along the normal and in-plane directions of the liquid-liquid interface.
Collapse
Affiliation(s)
- Santanu Maiti
- Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata-700064, India
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Cai B, Lv X, Gan S, Zhou M, Ma W, Wu T, Li F, Han D, Niu L. Advanced visible-light-driven photocatalyst upon the incorporation of sulfonated graphene. NANOSCALE 2013; 5:1910-1916. [PMID: 23354435 DOI: 10.1039/c2nr33521b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Zero bandgap and water soluble sulfonated graphene (SGE) has been introduced into an n-type semiconductor photocatalytic system to fabricate a Ag@AgBr/SGE composite photocatalyst. Due to its unique conduction and valence band dispersion and low Fermi level, SGE serves as an electron reservoir within the photocatalyst which enhances the charge carrier transfer and separation significantly. Furthermore, the stability and adsorptivity of Ag@AgBr/SGE are also improved owing to the sulfonic acid groups and conjugated sp(2) carbon network of SGE. The photocatalytic activity was found to be 11-fold higher than SGE-free Ag@AgBr upon the photodegradation of MO under visible light irradiation. This work provides a novel and in-depth perspective for understanding the graphene-involved photocatalytic mechanism and would stimulate the development of graphene-involved photocatalysts for the exploitation and utilization of solar energy.
Collapse
Affiliation(s)
- Bin Cai
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Bramhaiah K, John NS. Hybrid films of reduced graphene oxide with noble metal nanoparticles generated at a liquid/liquid interface for applications in catalysis. RSC Adv 2013. [DOI: 10.1039/c3ra23324c] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
|