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Comparative study on the structural and electrochemical properties of nitrogen-doped and nitrogen and sulfur co-doped reduced graphene oxide electrode prepared by hydrothermal technique. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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2
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Xiao H, Zhang N, Li G, Zhang Y, Wang Y, Wang Y, Zhang Y. Graphene-Iron Ore Tailings-Based Cementitious Composites with High Early Flexural Strength. MATERIALS (BASEL, SWITZERLAND) 2022; 16:ma16010327. [PMID: 36614666 PMCID: PMC9821977 DOI: 10.3390/ma16010327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/11/2022] [Accepted: 12/23/2022] [Indexed: 06/01/2023]
Abstract
Graphene is a two-dimensional nanomaterial with excellent mechanical, electrical and thermal properties. The application of graphene in cement-based materials has good prospects. However, the mechanical properties of cement-based materials are difficult to be significantly enhanced by ordinary graphene nanoplates. In this paper, nitrogen-doped graphene is first reported as an additive with dosages of 0.01, 0.02, 0.03, 0.04 and 0.05 wt.%, respectively, to prepare iron ore tailings-based cementitious composites. The iron ore tailings-based cementitious composite with 0.02 wt.% graphene shows an extremely high flexural strength of 15.05 MPa at 3 days, which is 134.4% higher than that of the iron ore tailings-based cementitious composite without graphene. The effects of graphene content and curing age on the flexural strength and microstructure of iron ore tailings-based cementitious composites were studied. In particular, the scanning electron microscope was adopted to observe the micromorphology of the composites. It is helpful to understand the graphene reinforcement mechanism for the high early flexural strength of iron ore tailings-based cementitious composites. By altering the morphology of iron ore tailings-based cementitious composites, graphene plays two roles in the composites. One role is to connect C-(A)-S-H gels, ettringite and other hydrated crystals to construct a three-dimensional structure. The other is to attract iron ore tailings distributed on its platform to enhance its flexural strength properties. These findings provide favorable guidance for the performance enhancement and mechanism replenishment of graphene-reinforced cementitious composites.
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Affiliation(s)
- Huiteng Xiao
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences (Beijing), Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences (Beijing), Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Na Zhang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences (Beijing), Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences (Beijing), Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Gen Li
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences (Beijing), Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences (Beijing), Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Youpeng Zhang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences (Beijing), Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences (Beijing), Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Yidi Wang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences (Beijing), Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences (Beijing), Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Yu Wang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences (Beijing), Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences (Beijing), Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Yihe Zhang
- Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, China University of Geosciences (Beijing), Beijing 100083, China
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of Geosciences (Beijing), Beijing 100083, China
- National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
- School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
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3
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An In-Depth Exploration of the Electrochemical Oxygen Reduction Reaction (ORR) Phenomenon on Carbon-Based Catalysts in Alkaline and Acidic Mediums. Catalysts 2022. [DOI: 10.3390/catal12070791] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Detailed studies of the electrochemical oxygen reduction reaction (ORR) on catalyst materials are crucial to improving the performance of different electrochemical energy conversion and storage systems (e.g., fuel cells and batteries), as well as numerous chemical synthesis processes. In the effort to reduce the loading of expensive platinum group metal (PGM)-based catalysts for ORR in the electrochemical systems, many carbon-based catalysts have already shown promising results and numerous investigations on those catalysts are in progress. Most of these studies show the catalyst materials’ ORR performance as current density data obtained through the rotating disk electrode (RDE), rotating ring-disk electrode (RRDE) experiments taking cyclic voltammograms (CV) or linear sweep voltammograms (LSV) approaches. However, the provided descriptions or interpretations of those data curves are often ambiguous and recondite which can lead to an erroneous understanding of the ORR phenomenon in those specific systems and inaccurate characterization of the catalyst materials. In this paper, we presented a study of ORR on a newly developed carbon-based catalyst, the nitrogen-doped graphene/metal-organic framework (N-G/MOF), through RDE and RRDE experiments in both alkaline and acidic mediums, taking the LSV approach. The functions and crucial considerations for the different parts of the RDE/RRDE experiment such as the working electrode, reference electrode, counter electrode, electrolyte, and overall RDE/RRDE process are delineated which can serve as guidelines for the new researchers in this field. Experimentally obtained LSV curves’ shapes and their correlations with the possible ORR reaction pathways within the applied potential range are discussed in depth. We also demonstrated how the presence of hydrogen peroxide (H2O2), a possible intermediate of ORR, in the alkaline electrolyte and the concentration of acid in the acidic electrolyte can maneuver the ORR current density output in compliance with the possible ORR pathways.
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Arif M, Bilal S, Shah AUHA. Fabrication and Integration of Functionalized N-rGO-Ni/Ag and N-rGO-Ni/Co Nanocomposites as Synergistic Oxygen Electrocatalysts in Fuel Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:585. [PMID: 35214913 PMCID: PMC8877386 DOI: 10.3390/nano12040585] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/31/2021] [Accepted: 01/13/2022] [Indexed: 02/04/2023]
Abstract
Fabrication of composites by developing simple techniques can be an efficient way to modify the desire properties of the materials. This paper presents a detailed study on synthesis of low cost and efficient nitrogen doped reduced graphene oxide nickle-silver (N-rGO-Ni/Ag) and nickel-cobalt (N-rGO-Ni/Co) nanocomposites as electrocatalysts in fuel cell using one-pot blended reflux condensation route. An admirable correlation in the structures and properties of the synthesized nanocomposites was observed. The Oxygen Reduction Reaction (ORR) values for N-rGO-Ni/Ag and N-rGO-Ni/Co calculated from the onset potential, using Linear Sweep Voltammetry (LSV), were found to be 1.096 and 1.146. While the half wave potential were determined to be 1.046 and 1.106, respectively, N-rGO-Ni/Ag and N-rGO-Ni/Co. The Tafel and bi-functional (ORR/OER) values were calculated as 76 and 35 mV/decade and 1.23 and 1.12 V, respectively, for N-rGO-Ni/Ag and N-rGO-Ni/Co. The lower onset and half wave potential, low charge transfer resistance (Rct = 1.20 Ω/cm2) and internal solution resistance (Rs = 8.84 × 10-1 Ω/cm2), lower Tafel values (35 mV), satisfactory LSV measurements and mass activity (24.5 at 1.056 V for ORR and 54.9 at 1.056 for OER) demonstrate the remarkable electrocatalytic activity of N-rGO-Ni/Co for both ORR and OER. The chronamperometric stability for synthesized nanocomposites was found satisfactory up to 10 h.
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Affiliation(s)
- Muhammad Arif
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan;
| | - Salma Bilal
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan;
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Emran MY, El‐Safty SA, Elmarakbi A, Reda A, El Sabagh A, Shenashen MA. Chipset Nanosensor Based on N‐Doped Carbon Nanobuds for Selective Screening of Epinephrine in Human Samples. ADVANCED MATERIALS INTERFACES 2022; 9. [DOI: 10.1002/admi.202101473] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Indexed: 09/01/2023]
Abstract
AbstractChipset nanosensor design and fabrication are important for healthcare research and development. Herein, a functionalized chipset nanosensor is designed to monitor neurotransmitters (i.e., epinephrine (EP)) in human fluids. An interdigitated electrode array (IDA) is functionalized by N‐doped carbon nanobud (N‐CNB) and N‐doped carbon nanostructure (N‐CNS). The surface morphology of N‐CNB shows the formation of nanotubular‐like branches on sheets and micrometer‐size tubes. The N‐CNS design consists of the formation of aggregated sheets and particles in nanometer size. The irregular shape formation provides surface heterogeneity and numerous free spaces between the stacked nanostructures. N‐atoms ascertain highly active N‐CNS with multifunctional active centers, electron‐rich charged surface, and short distance pathway. The N‐CNB/IDA exhibits the best performance for EP signaling with high sensitivity and selectivity. The N‐CNB/IDA sensing performance for EP detection indicates the successful design of a highly selective and sensitive assay with low detection limit of 0.011 × 10−6 m and a broad linear range of 0.5 × 10−6 to 3 × 10−6 m. The N‐CNB/IDA exhibits a high degree of accuracy and reproducibility with RSD of 2.7% and 3.9%, respectively. Therefore, the chipset nanosensor of N‐CNB/IDA can be used for on‐site monitoring of EP in human serum samples and further used in daily monitoring of neuronal disorders.
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Affiliation(s)
- Mohammed Y. Emran
- National Institute for Materials Science (NIMS) Research Center for Functional Materials 1‐2‐1 Sengen Tsukuba‐shi Ibaraki‐ken 305‐0047 Japan
| | - Sherif A. El‐Safty
- National Institute for Materials Science (NIMS) Research Center for Functional Materials 1‐2‐1 Sengen Tsukuba‐shi Ibaraki‐ken 305‐0047 Japan
| | - Ahmed Elmarakbi
- Faculty of Engineering and Environment Northumbria University Newcastle upon Tyne NE1 8ST UK
| | - Abduallah Reda
- National Institute for Materials Science (NIMS) Research Center for Functional Materials 1‐2‐1 Sengen Tsukuba‐shi Ibaraki‐ken 305‐0047 Japan
| | - Ayman El Sabagh
- Department of Field Crops Faculty of Agriculture Siirt University Siirt 56100 Turkey
| | - Mohamed A. Shenashen
- National Institute for Materials Science (NIMS) Research Center for Functional Materials 1‐2‐1 Sengen Tsukuba‐shi Ibaraki‐ken 305‐0047 Japan
- Department of Petrochemical Egyptian Petroleum Research Institute (EPRI) Nasr City Cairo 11727 Egypt
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6
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Lee A, Yun S, Kang ES, Kim JW, Park JH, Choi JS. Effect of heteroatoms on the optical properties and enzymatic activity of N-doped carbon dots. RSC Adv 2021; 11:18776-18782. [PMID: 35478662 PMCID: PMC9033502 DOI: 10.1039/d1ra03175a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 05/17/2021] [Indexed: 01/06/2023] Open
Abstract
Carbon dots (CDs) are attractive nanomaterials because of their facile synthesis, biocompatibility, superior physicochemical properties, and low cost of their precursors. Recent advances in CDs have particularly relied on the modulation of their properties by heteroatom doping (e.g., nitrogen). Although nitrogen-doped CDs (N-CDs) have attracted considerable attention owing to their different properties compared to those of the original CDs, the effects of the heteroatom content and types of bonding on the properties of N-doped CDs remain underexplored. In this work, we prepared N-CDs with controlled nitrogen contents, and fully examined their optical properties, enzymatic activity, and toxicity. We demonstrate that (i) the type of carbon-heteroatom bonding (i.e., carbon-oxygen and carbon-nitrogen bonds) can be altered by changing the ratio of carbon to heteroatom sources, and (ii) both the heteroatom content and the heteroatom-bonding character significantly influence the properties of the doped CDs. Notably, N-CDs exhibited higher quantum yields and peroxidase-like activities than the non-doped CDs. Furthermore, the negatively charged N-CDs exhibited negligible cytotoxicity. Such comprehensive investigations on the physicochemical properties of N-CDs are expected to guide the design of N-CDs for targeted applications.
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Affiliation(s)
- Ahyun Lee
- Dept. of Chemical and Biological Engineering, Hanbat National University 125 Dongseodaero Yuseonggu Daejeon 34158 Republic of Korea
| | - Sohee Yun
- Dept. of Chemical and Biological Engineering, Hanbat National University 125 Dongseodaero Yuseonggu Daejeon 34158 Republic of Korea
| | - Eun Soo Kang
- Dept. of Chemical and Biological Engineering, Hanbat National University 125 Dongseodaero Yuseonggu Daejeon 34158 Republic of Korea
| | - Jung Wan Kim
- Dept. of Chemical and Biological Engineering, Hanbat National University 125 Dongseodaero Yuseonggu Daejeon 34158 Republic of Korea
| | - Jeong Ho Park
- Dept. of Chemical and Biological Engineering, Hanbat National University 125 Dongseodaero Yuseonggu Daejeon 34158 Republic of Korea
| | - Jin-Sil Choi
- Dept. of Chemical and Biological Engineering, Hanbat National University 125 Dongseodaero Yuseonggu Daejeon 34158 Republic of Korea
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7
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Benzofurazan derivatives modified graphene oxide nanocomposite: Physico-chemical characterization and interaction with bacterial and tumoral cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:112028. [PMID: 33812643 DOI: 10.1016/j.msec.2021.112028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/08/2021] [Accepted: 03/02/2021] [Indexed: 10/21/2022]
Abstract
Two novel graphene oxide-benzofuran derivatives composites were obtained through the covalent immobilization of [4-hydrazinyl-7nitrobenz-[2,1,3-d]-oxadiazole (NBDH) and respectively, N1-(7-nitrobenzo[c][1,2,5]oxadiazol-4-yl)benzene-1,2-diamine (NBD-PD), on graphene oxide. This covalent functionalization was achieved by activating the carboxylic groups on the surface of graphene oxide by the reaction with thionyl chloride followed by coupling with the amino group of benzofurazane derivatives to obtain the NBD derivatives grafted on graphene oxide. The formation of new materials was check by Raman spectroscopy, fluorescence, infrared spectroscopy and X-ray photoelectron spectroscopy, thermal analysis, scanning electron microscopy, and elemental mapping. The antimicrobial effect of the new composites was evaluated on Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, both on planktonic and adherent biofilm populations. The cytotoxic effects of the materials on human colon cancer HCT-116 cell line and the normal human fibroblast BJ cell line were evaluated by investigating cell viability and membrane integrity. Apoptosis and colony forming ability of tumor cells were also investigated following exposure to new materials. The biological results of this study have shown that the new materials have potential in combating biofilm formation and also, the tested materials induced cytotoxicity in human colon cancer HCT-116 cell line with limited effects on normal BJ fibroblasts, suggesting their antitumor potential.
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Zhang H, Yang D, Lau A, Ma T, Lin H, Jia B. Hybridized Graphene for Supercapacitors: Beyond the Limitation of Pure Graphene. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007311. [PMID: 33634597 DOI: 10.1002/smll.202007311] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/07/2021] [Indexed: 06/12/2023]
Abstract
Graphene-based supercapacitors have been attracting growing attention due to the predicted intrinsic high surface area, high electron mobility, and many other excellent properties of pristine graphene. However, experimentally, the state-of-the-art graphene electrodes face limitations such as low surface area, low electrical conductivity, and low capacitance, which greatly limit their electrochemical performances for supercapacitor applications. To tackle these issues, hybridizing graphene with other species (e.g., atom, cluster, nanostructure, etc.) to enlarge the surface area, enhance the electrical conductivity, and improve capacitance behaviors are strongly desired. In this review, different hybridization principles (spacers hybridization, conductors hybridization, heteroatoms doping, and pseudocapacitance hybridization) are discussed to provide fundamental guidance for hybridization approaches to solve these challenges. Recent progress in hybridized graphene for supercapacitors guided by the above principles are thereafter summarized, pushing the performance of hybridized graphene electrodes beyond the limitation of pure graphene materials. In addition, the current challenges of energy storage using hybridized graphene and their future directions are discussed.
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Affiliation(s)
- Huihui Zhang
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC, 3122, Australia
| | - Dan Yang
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC, 3122, Australia
| | - Alan Lau
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC, 3122, Australia
| | - Tianyi Ma
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC, 3122, Australia
| | - Han Lin
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC, 3122, Australia
| | - Baohua Jia
- Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC, 3122, Australia
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9
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Wang Z, Wang Y, Hao X, Liu J, Chen Y, Li P, Dong M. Modulation of oxygen functional groups and their influence on the supercapacitor performance of reduced graphene oxide. NEW J CHEM 2020. [DOI: 10.1039/d0nj04072j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Through tuning the oxygen function groups, it was demonstrated that the specific capacitance of reduced graphene oxide can increase from 136 F g−1 to 182 F g−1.
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Affiliation(s)
- Zegao Wang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
- Interdisciplinary Nanoscience Center
| | - Yuqing Wang
- Interdisciplinary Nanoscience Center
- Aarhus University
- Aarhus 8000
- Denmark
| | - Xin Hao
- North Laser Research Institute Co. Ltd
- Chengdu
- China
| | - Jingbo Liu
- School of Physics
- Dongguan University of Technology
- Dongguan
- China
| | - Yuanfu Chen
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
| | - Pingjian Li
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center
- Aarhus University
- Aarhus 8000
- Denmark
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10
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Shabnam L, Faisal SN, Martucci A, Gomes VG. Non-enzymatic multispecies sensing of key wine attributes with nickel nanoparticles on N-doped graphene composite. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04455-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Wang J, Xiao Y, Cecen V, Shao C, Zhao Y, Qu L. Tunable-Deformed Graphene Layers for Actuation. Front Chem 2019; 7:725. [PMID: 31781535 PMCID: PMC6857681 DOI: 10.3389/fchem.2019.00725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/10/2019] [Indexed: 11/21/2022] Open
Abstract
Benefiting from unique planar structure, high flexibility, splendid thermal, and electric properties; graphene as a crucial component has been widely applied into smart materials and multi-stimulus responsive actuators. Moreover, graphene with easy processing and modification features can be decorated with various functional groups through covalent or non-covalent bonds, which is promising in the conversion of environmental energy from single and/or multi-stimuli, to mechanical energy. In this review, we present the actuating behaviors of graphene, regulated by chemical bonds or intermolecular forces under multi-stimuli and summarize the recent advances on account of the unique nanostructures in various actuation circumstances such as thermal, humidity, electrochemical, electro-/photo-thermal, and other stimuli.
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Affiliation(s)
- Jiaqi Wang
- Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, Beijing, China
| | - Yukun Xiao
- Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, Beijing, China
| | - Volkan Cecen
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Changxiang Shao
- Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, Beijing, China
| | - Yang Zhao
- Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, Beijing, China
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Liangti Qu
- Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, Beijing, China
- Key Laboratory for Advanced Materials Processing Technology, Ministry of Education of China, Beijing, China
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Department of Chemistry, Tsinghua University, Beijing, China
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12
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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]
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13
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Gao X, Han G, Song H, Chang Y, Xiao Y, Zhang Y, Liu C, Li H. Purified nitrogen-doped reduced graphene oxide hydrogels for high-performance supercapacitors. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Chuong ND, Thanh TD, Kim NH, Lee JH. Hierarchical Heterostructures of Ultrasmall Fe 2O 3-Encapsulated MoS 2/N-Graphene as an Effective Catalyst for Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24523-24532. [PMID: 29972302 DOI: 10.1021/acsami.8b06485] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, a facile approach has been successfully applied to synthesize a hierarchical three-dimensional architecture of ultrasmall hematite nanoparticles homogeneously encapsulated in MoS2/nitrogen-doped graphene nanosheets, as a novel non-Pt cathodic catalyst for oxygen reduction reaction in fuel cell applications. The intrinsic topological characteristics along with unique physicochemical properties allowed this catalyst to facilitate oxygen adsorption and sped up the reduction kinetics through fast heterogeneous decomposition of oxygen to final products. As a result, the catalyst exhibited outstanding catalytic performance with a high electron-transfer number of 3.91-3.96, which was comparable to that of the Pt/C product. Furthermore, its working stability with a retention of 96.1% after 30 000 s and excellent alcohol tolerance were found to be significantly better than those for the Pt/C product. This hybrid can be considered as a highly potential non-Pt catalyst for practical oxygen reduction reaction application in requirement of low cost, facile production, high catalytic behavior, and excellent stability.
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15
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Thanh TD, Chuong ND, Hien HV, Kim NH, Lee JH. CuAg@Ag Core-Shell Nanostructure Encapsulated by N-Doped Graphene as a High-Performance Catalyst for Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4672-4681. [PMID: 29336546 DOI: 10.1021/acsami.7b16294] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Development of a robust, cost-effective, and efficient catalyst is extremely necessary for oxygen reduction reaction (ORR) in fuel cell applications. Herein, we reported a well-defined nanostructured catalyst of highly dispersed CuAg@Ag core-shell nanoparticle (NP)-encapsulated nitrogen-doped graphene nanosheets (CuAg@Ag/N-GNS) exhibiting a superior catalytic activity toward ORR in alkaline medium. The synergistic effects produced from the unique properties of CuAg@Ag core-shell NPs and N-GNS made such a novel nanohybrid display a catalytic behavior comparable to that of the commercial Pt/C product. In particular, it demonstrated a much better stability and methanol tolerance than Pt/C under the same conditions. Because of its outstanding electrochemical performance and ease of synthesis, CuAg@Ag/N-GNS material was expected to be a promising low-cost catalyst for ORR in alkaline fuel cell applications.
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Affiliation(s)
- Tran Duy Thanh
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global), Department of BIN Convergence Technology, and ‡Carbon Composite Research Centre, Department of Polymer & Nanoscience and Technology, Chonbuk National University , Jeonju, Jeonbuk 54896, Republic of Korea
| | - Nguyen Dinh Chuong
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global), Department of BIN Convergence Technology, and ‡Carbon Composite Research Centre, Department of Polymer & Nanoscience and Technology, Chonbuk National University , Jeonju, Jeonbuk 54896, Republic of Korea
| | - Hoa Van Hien
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global), Department of BIN Convergence Technology, and ‡Carbon Composite Research Centre, Department of Polymer & Nanoscience and Technology, Chonbuk National University , Jeonju, Jeonbuk 54896, Republic of Korea
| | - Nam Hoon Kim
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global), Department of BIN Convergence Technology, and ‡Carbon Composite Research Centre, Department of Polymer & Nanoscience and Technology, Chonbuk National University , Jeonju, Jeonbuk 54896, Republic of Korea
| | - Joong Hee Lee
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global), Department of BIN Convergence Technology, and ‡Carbon Composite Research Centre, Department of Polymer & Nanoscience and Technology, Chonbuk National University , Jeonju, Jeonbuk 54896, Republic of Korea
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16
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Xie H, Tang S, Li D, Vongehr S, Meng X. Flexible Asymmetric Supercapacitors Based on Nitrogen-Doped Graphene Hydrogels with Embedded Nickel Hydroxide Nanoplates. CHEMSUSCHEM 2017; 10:2301-2308. [PMID: 27094454 DOI: 10.1002/cssc.201600150] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Indexed: 06/05/2023]
Abstract
To push the energy density limit of supercapacitors (SCs), new electrode materials with hierarchical nano-micron pore architectures are strongly desired. Graphene hydrogels that consist of 3 D porous frameworks have received particular attention but their capacitance is limited by electrical double layer capacitance. In this work, we report the rational design and fabrication of a composite hydrogel of N-doped graphene (NG) that contains embedded Ni(OH)2 nanoplates that is cut conveniently into films to serve as positive electrodes for flexible asymmetric solid-state SCs with NG hydrogel films as negative electrodes. The use of high-power ultrasound leads to hierarchically porous micron-scale sheets that consist of a highly interconnected 3 D NG network in which Ni(OH)2 nanoplates are well dispersed, which avoids the stacking of NG, Ni(OH)2 , and their composites. The optimal SC device benefits from the compositional features and 3 D electrode architecture and has a high specific areal capacitance of 255 mF cm-2 at 1.0 mA cm-2 and a very stable, high output cell voltage of 1.45 V, which leads to an energy density of 80 μW h cm-2 even at a high power of 944 μW cm-2 , considerably higher than that reported for similar devices. The devices exhibit a high rate capability and only 8 % capacitance loss over 10 000 charging cycles as well as excellent flexibility with no clear performance degradation under strong bending.
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Affiliation(s)
- Hao Xie
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Institute of Materials Engineering, Nanjing University, Jiangsu, 210093, P.R. China
| | - Shaochun Tang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Institute of Materials Engineering, Nanjing University, Jiangsu, 210093, P.R. China
| | - Dongdong Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P.R. China
| | - Sascha Vongehr
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Institute of Materials Engineering, Nanjing University, Jiangsu, 210093, P.R. China
| | - Xiangkang Meng
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Institute of Materials Engineering, Nanjing University, Jiangsu, 210093, P.R. China
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17
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Shabnam L, Faisal SN, Roy AK, Haque E, Minett AI, Gomes VG. Doped graphene/Cu nanocomposite: A high sensitivity non-enzymatic glucose sensor for food. Food Chem 2017; 221:751-759. [DOI: 10.1016/j.foodchem.2016.11.107] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 08/02/2016] [Accepted: 11/21/2016] [Indexed: 10/20/2022]
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18
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Ariharan A, Viswanathan B, Nandhakumar V. Nitrogen Doped Graphene as Potential Material for Hydrogen Storage. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/graphene.2017.62004] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Su XL, Cheng MY, Fu L, Zheng GP, Zheng XC, Yang JH, Guan XX. Facile synthesis of 3D nitrogen-doped graphene aerogel nanomeshes with hierarchical porous structures for applications in high-performance supercapacitors. NEW J CHEM 2017. [DOI: 10.1039/c7nj00440k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3D N-GANMs with hierarchical pores are firstly synthesized using iron nitrate as the etching agent, which display excellent supercapacitive performances.
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Affiliation(s)
- Xiao-Li Su
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Ming-Yu Cheng
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Lin Fu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Guang-Ping Zheng
- Department of Mechanical Engineering
- The Hong Kong Polytechnic University
- Hong Kong
- China
| | - Xiu-Cheng Zheng
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Jing-He Yang
- School of Chemical Engineering and Energy
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xin-Xin Guan
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
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20
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Faisal SN, Haque E, Noorbehesht N, Zhang W, Harris AT, Church T, Minett AI. Pyridinic and graphitic nitrogen-rich graphene for high-performance supercapacitors and metal-free bifunctional electrocatalysts for ORR and OER. RSC Adv 2017. [DOI: 10.1039/c7ra01355h] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile synthesis of nitrogen-doped graphene with high atomic percentages of pyridinic N and graphitic N is reported. The synthesized materials show superior capacitance performance and metal-free bifunctional electrocatalysis of ORR and OER.
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Affiliation(s)
- Shaikh Nayeem Faisal
- Laboratory of Sustainable Technology
- School of Chemical & Biomolecular Engineering
- University of Sydney
- Australia
| | - Enamul Haque
- Laboratory of Sustainable Technology
- School of Chemical & Biomolecular Engineering
- University of Sydney
- Australia
| | - Nikan Noorbehesht
- Laboratory of Sustainable Technology
- School of Chemical & Biomolecular Engineering
- University of Sydney
- Australia
| | - Weimin Zhang
- Laboratory of Sustainable Technology
- School of Chemical & Biomolecular Engineering
- University of Sydney
- Australia
| | - Andrew T. Harris
- Laboratory of Sustainable Technology
- School of Chemical & Biomolecular Engineering
- University of Sydney
- Australia
| | - Tamara L. Church
- Laboratory of Sustainable Technology
- School of Chemical & Biomolecular Engineering
- University of Sydney
- Australia
| | - Andrew I. Minett
- Laboratory of Sustainable Technology
- School of Chemical & Biomolecular Engineering
- University of Sydney
- Australia
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21
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Shabnam L, Faisal SN, Roy AK, Minett AI, Gomes VG. Nonenzymatic multispecies sensor based on Cu-Ni nanoparticle dispersion on doped graphene. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.056] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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Structure of functionalized nitrogen-doped graphene hydrogels derived from isomers of phenylenediamine and graphene oxide based on their high electrochemical performance. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.07.054] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Li Z, Li B, Liu Z, Li D, Wang H, Li Q. One-pot construction of 3-D nitrogen-doped activated graphene-like nanosheets for high-performance supercapacitors. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.210] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Akhter T, Islam MM, Faisal SN, Haque E, Minett AI, Liu HK, Konstantinov K, Dou SX. Self-Assembled N/S Codoped Flexible Graphene Paper for High Performance Energy Storage and Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:2078-2087. [PMID: 26725830 DOI: 10.1021/acsami.5b10545] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel flexible three-dimensional (3D) architecture of nitrogen and sulfur codoped graphene has been successfully synthesized via thermal treatment of a liquid crystalline graphene oxide-doping agent composition, followed by a soft self-assembly approach. The high temperature process turns the layer-by-layer assembly into a high surface area macro- and nanoporous free-standing material with different atomic configurations of graphene. The interconnected 3D network exhibits excellent charge capacitive performance of 305 F g(-1) (at 100 mV s(-1)), an unprecedented volumetric capacitance of 188 F cm(-3) (at 1 A g(-1)), and outstanding energy density of 28.44 Wh kg(-1) as well as cycle life of 10 000 cycles as a free-standing electrode for an aqueous electrolyte, symmetric supercapacitor device. Moreover, the resulting nitrogen/sulfur doped graphene architecture shows good electrocatalytic performance, long durability, and high selectivity when they are used as metal-free catalyst for the oxygen reduction reaction. This study demonstrates an efficient approach for the development of multifunctional as well as flexible 3D architectures for a series of heteroatom-doped graphene frameworks for modern energy storage as well as energy source applications.
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Affiliation(s)
- Taslima Akhter
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials (AIIM) Facility, University of Wollongong , Innovation Campus, North Wollongong, New South Wales 2522, Australia
| | - Md Monirul Islam
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials (AIIM) Facility, University of Wollongong , Innovation Campus, North Wollongong, New South Wales 2522, Australia
| | - Shaikh Nayeem Faisal
- Laboratory for Sustainable Technology, School of Chemical and Bimolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
| | - Enamul Haque
- Laboratory for Sustainable Technology, School of Chemical and Bimolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
| | - Andrew I Minett
- Laboratory for Sustainable Technology, School of Chemical and Bimolecular Engineering, The University of Sydney , Sydney, New South Wales 2006, Australia
| | - Hua Kun Liu
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials (AIIM) Facility, University of Wollongong , Innovation Campus, North Wollongong, New South Wales 2522, Australia
| | - Konstantin Konstantinov
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials (AIIM) Facility, University of Wollongong , Innovation Campus, North Wollongong, New South Wales 2522, Australia
| | - Shi Xue Dou
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials (AIIM) Facility, University of Wollongong , Innovation Campus, North Wollongong, New South Wales 2522, Australia
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25
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Wang Z, Chen Y, Li P, He J, Zhang W, Guo Z, Li Y, Dong M. Synthesis of silicon-doped reduced graphene oxide and its applications in dye-sensitive solar cells and supercapacitors. RSC Adv 2016. [DOI: 10.1039/c5ra25962b] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The silicon-doped reduced graphene oxide was synthesized via annealing treatment of triphenylsilane and graphene oxide. It exhibits significant enhancement in electrocatalytic and electrochemical properties.
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Affiliation(s)
- Zegao Wang
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- P. R. China
- Interdisciplinary Nanoscience Center (iNANO)
| | - Yuanfu Chen
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- P. R. China
| | - Pingjian Li
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- P. R. China
| | - Jiarui He
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- P. R. China
| | - Wanli Zhang
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- P. R. China
| | - Zheng Guo
- Department of Engineering
- Aarhus University
- Denmark
| | - Yanrong Li
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- University of Electronic Science and Technology of China
- Chengdu 610054
- P. R. China
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO)
- Aarhus University
- Denmark
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26
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Zhan C, Yu X, Liang Q, Liu W, Wang Y, Lv R, Huang ZH, Kang F. Flour food waste derived activated carbon for high-performance supercapacitors. RSC Adv 2016. [DOI: 10.1039/c6ra18056f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Activated carbon was prepared by carbonization of flour food waste residue and subsequent KOH activation. It shows great prospects in high-performance supercapacitor applications.
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Affiliation(s)
- Changzhen Zhan
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Xiaoliang Yu
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Qinghua Liang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Wei Liu
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Yanbo Wang
- The High School Affiliated to Renmin University of China
- Beijing 100080
- China
| | - Ruitao Lv
- Key Laboratory of Advanced Materials (MOE)
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Zheng-Hong Huang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Feiyu Kang
- Key Laboratory of Advanced Materials (MOE)
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
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27
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Tran NQ, Kang BK, Tiruneh SN, Yoon DH. Design of Advanced MnO/N-Gr 3D Walls through Polymer Cross-Linking for High-Performance Supercapacitor. Chemistry 2015; 22:1652-7. [DOI: 10.1002/chem.201504426] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Ngoc Quang Tran
- School of Advanced Materials Science and Engineering; Sungkyunkwan University, 16419; 2006, Seobu-ro, Jangan-gu, Suwon-si Gyeong gi-do Republic of Korea
| | - Bong Kyun Kang
- School of Advanced Materials Science and Engineering; Sungkyunkwan University, 16419; 2006, Seobu-ro, Jangan-gu, Suwon-si Gyeong gi-do Republic of Korea
| | - Sintayehu Nibret Tiruneh
- School of Advanced Materials Science and Engineering; Sungkyunkwan University, 16419; 2006, Seobu-ro, Jangan-gu, Suwon-si Gyeong gi-do Republic of Korea
| | - Dae Ho Yoon
- School of Advanced Materials Science and Engineering; Sungkyunkwan University, 16419; 2006, Seobu-ro, Jangan-gu, Suwon-si Gyeong gi-do Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT); Sungkyunkwan University, 16419; 2006, Seobu-ro, Jangan-gu, Suwon-si Gyeong gi-do Republic of Korea
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28
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Abstract
Heteroatom-doped graphitic frameworks have received great attention in energy research, since doping endows graphitic structures with a wide spectrum of properties, especially critical for electrochemical supercapacitors, which tend to complement or compete with the current lithium-ion battery technology/devices. This article reviews the latest developments in the chemical modification/doping strategies of graphene and highlights the versatility of such heteroatom-doped graphitic structures. Their role as supercapacitor electrodes is discussed in detail. This review is specifically focused on the concept of material synthesis, techniques for electrode fabrication and metrics of performance, predominantly covering the last four years. Challenges and insights into the future research and perspectives on the development of novel electrode architectures for electrochemical supercapacitors based on doped graphene are also discussed.
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Affiliation(s)
- Nanjundan Ashok Kumar
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, 4072 Australia
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29
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Abstract
We discuss early advances in the preparation of doped graphene and its unique properties as well as its applications in bioanalysis.
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Affiliation(s)
- Wenyan Zhang
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Longfei Wu
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Zhaolong Li
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Yang Liu
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
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