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Bhattarai RM, Le N, Chhetri K, Acharya D, Pandiyarajan SMS, Saud S, Kim SJ, Mok YS. Synergistic Performance Boosts of Dopamine-Derived Carbon Shell Over Bi-metallic Sulfide: A Promising Advancement for High-Performance Lithium-Ion Battery Anodes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308160. [PMID: 38342631 PMCID: PMC11022702 DOI: 10.1002/advs.202308160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/22/2024] [Indexed: 02/13/2024]
Abstract
A CoMoS composite is synthesized to combine the benefits of cobalt and molybdenum sulfides as an anodic material for advanced lithium-ion batteries (LIBs). The synthesis is accomplished using a simple two-step hydrothermal method and the resulting CoMoS nanocomposites are subsequently encapsulated in a carbonized polydopamine shell. The synthesis procedure exploited the self-polymerization ability of dopamine to create nitrogen-doped carbon-coated cobalt molybdenum sulfide, denoted as CoMoS@NC. Notably, the de-lithiation capacity of CoMoS and CoMoS@NC is 420 and 709 mAh g⁻1, respectively, even after 100 lithiation/de-lithiation cycles at a current density of 200 mA g⁻1. Furthermore, excellent capacity retention ability is observed for CoMoS@NC as it withstood 600 consecutive lithiation/de-lithiation cycles with 94% capacity retention. Moreover, a LIB full-cell assembly incorporating the CoMoS@NC anode and an NMC-532 cathode is subjected to comprehensive electrochemical and practical tests to evaluate the performance of the anode. In addition, the density functional theory showcases the increased lithium adsorption for CoMoS@NC, supporting the experimental findings. Hence, the use of dopamine as a nitrogen-doped carbon shell enhanced the performance of the CoMoS nanocomposites in experimental and theoretical tests, positioning the material as a strong candidate for LIB anode.
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Affiliation(s)
- Roshan Mangal Bhattarai
- Department of Chemical EngineeringJeju National University102 Jejudaehak‐roJeju63243Republic of Korea
| | - Nghia Le
- Department of ChemistryMississippi State UniversityPO Box 9573Mississippi StateMS39762USA
| | - Kisan Chhetri
- Department of Nano Convergence EngineeringJeonbuk National UniversityJeonju561756Republic of Korea
- Regional Leading Research Center (RLRC) for Nanocarbon‐based Energy Materials and Application TechnologyJeonbuk National UniversityJeollabuk‐do54001Republic of Korea
| | - Debendra Acharya
- Department of Nano Convergence EngineeringJeonbuk National UniversityJeonju561756Republic of Korea
| | | | - Shirjana Saud
- Department of Chemical EngineeringJeju National University102 Jejudaehak‐roJeju63243Republic of Korea
| | - Sang Jae Kim
- Nanomaterials and System LaboratoryDepartment of Mechatronics EngineeringJeju National University102 Jejudaehak‐roJeju63243Republic of Korea
| | - Young Sun Mok
- Department of Chemical EngineeringJeju National University102 Jejudaehak‐roJeju63243Republic of Korea
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2
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Xuan W, Liu YH, Chen SY, Dyer MS, Chen HYT. Unveiling the Morphology of Carbon-Supported Ru Nanoparticles by Multiscale Modeling. NANO LETTERS 2024; 24:2689-2697. [PMID: 38285690 PMCID: PMC10921456 DOI: 10.1021/acs.nanolett.3c03796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 01/31/2024]
Abstract
Simulating the behavior of metal nanoparticles on supports is crucial for boosting their catalytic performance and various nanotechnology applications; however, such simulations are limited by the conflicts between accuracy and efficiency. Herein, we introduce a multiscale modeling strategy to unveil the morphology of Ru supported on pristine and N-doped graphene. Our multiscale modeling started with the electronic structures of a supported Ru single atom, revealing the strong metal-support interaction around pyridinic nitrogen sites. To determine the stable configurations of Ru2-13 clusters on three different graphene supports, global energy minimum searches were performed. The sintering of the global minimum Ru13 clusters on supports was further simulated by ab initio molecular dynamics (AIMD). The AIMD data set was then collected for deep potential molecular dynamics to study the melting of Ru nanoparticles. This study presents comprehensive descriptions of carbon-supported Ru and develops modeling approaches that bridge different scales and can be applied to various supported nanoparticle systems.
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Affiliation(s)
- Wenye Xuan
- Department
of Engineering and System Science, National
Tsing Hua University, Hsinchu 30013, Taiwan
- School
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Yu-Hao Liu
- Department
of Engineering and System Science, National
Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shih-Yuan Chen
- Energy
Catalyst Technology Group, Energy Process Research Institute (EPRI), National Institute of Advanced Industrial Science
and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Matthew S. Dyer
- School
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
- Materials
Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, United Kingdom
| | - Hsin-Yi Tiffany Chen
- Department
of Engineering and System Science, National
Tsing Hua University, Hsinchu 30013, Taiwan
- College
of Semiconductor Research, National Tsing
Hua University, Hsinchu 30013, Taiwan
- Department
of Materials Science and Engineering, National
Tsing Hua University, Hsinchu 30013, Taiwan
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3
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Ghalkhani M, Sadat Khaloo S, Sohouli E. Development of an electrochemical medetomidine nanosensor based on N and P-doped carbon nano-onions, MoS2, and poly (melamine) nanocomposite. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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4
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Kaur M, Kaur M, Singh D, Feng M, Sharma VK. Magnesium ferrite-nitrogen-doped graphene oxide nanocomposite: effective adsorptive removal of lead(II) and arsenic(III). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:48260-48275. [PMID: 35190985 DOI: 10.1007/s11356-022-19314-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Magnetic nanocomposites have received immense interest as adsorbents for water decontamination. This paper presents adsorptive properties of nitrogen-doped graphene oxide (N-GO) with magnesium ferrite (MgFe2O4) magnetic nanocomposite for removing lead(II) (Pb(II)and arsenite As(III) ions. Transmission electron microscope (TEM) image of synthesized nanocomposite revealed the wrinkled sheets of N-GO containing MgFe2O4 nanoparticles (NPs) with particle size of 5-15 nm distributed over its surface. This nanocomposite displayed higher BET surface area (72.2 m2g-1) than that of pristine MgFe2O4 NPs (38.4 m2g-1). Adsorption on the nanocomposite could be described by the Langmuir isotherm with the maximum adsorption capacities were 930 mg/g, and 64.1 mg/g for Pb(II) and As(III), respectively. Whereas, maximum removal efficiencies were observed to be 99.7 [Formula: see text] 0.2% and 93.5 [Formula: see text] 0.1% for Pb(II) and As(III), respectively. The study on the effect of coexisting anions on the adsorption of metal ions showed that the phosphate ions were potential competitors of Pb(II) and As(III) ions to adsorb on the nanocomposite. Significantly, the investigation on adsorption of metal ion in the presence of coexisting heavy metal ions indicated the preferential adsorption of Pb(II) ions as compared to Cd(II), Zn(II) and Ni(II) ions. The effectiveness of the nanocomposite to remove the metal ions in electroplating wastewater was demonstrated.
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Affiliation(s)
- Manmeet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana, 141004, India
| | - Manpreet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana, 141004, India.
| | - Dhanwinder Singh
- Department of Soil Science, Punjab Agricultural University, Ludhiana, 141004, India
| | - Mingbao Feng
- Program for the Environment and Sustainability, Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, 212 Adriance Lab Road, College Station, TX, 77843, USA
| | - Virender K Sharma
- Program for the Environment and Sustainability, Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, 212 Adriance Lab Road, College Station, TX, 77843, USA.
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5
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Arvas MB, Gürsu H, Gencten M, Sahin Y. New Approach Synthesis of S, N Co‐Doped Graphenes for High‐Performance Supercapacitors. ChemistrySelect 2022. [DOI: 10.1002/slct.202200360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Melih Besir Arvas
- Department of Chemistry Faculty of Arts and Science Yildiz Technical University Istanbul 34220 Turkey
- Science and Technology Application and Research Center Yildiz Technical University Istanbul 34200 Turkey
| | - Hurmus Gürsu
- Department of Chemistry Faculty of Arts and Science Yildiz Technical University Istanbul 34220 Turkey
- Science and Technology Application and Research Center Yildiz Technical University Istanbul 34200 Turkey
| | - Metin Gencten
- Department of Metallurgy and Materials Engineering Faculty of Chemical and Metallurgical Engineering Yildiz Technical University 34220 Istanbul Turkey
| | - Yucel Sahin
- Department of Chemistry Faculty of Arts and Science Yildiz Technical University Istanbul 34220 Turkey
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Byeon A, Kim H, Park JH, Kim GM, Lee JW. Highly active oxygen reduction reaction on Fe-nanoclustered hierarchical porous carbon derived from CO 2. Chem Commun (Camb) 2021; 57:13538-13541. [PMID: 34825911 DOI: 10.1039/d1cc05390f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This work presents a highly active electrocatalyst of CO2-derived hierarchical carbon. It retains a high surface area and enables homogeneous insertion of Fe-N-C active sites for the oxygen reduction reaction. The electrocatalyst with a highly interconnected porous structure provides oxygen reduction reaction activity with an E1/2 difference of 10 mV and a high current density equivalent to Pt/C 20 wt%.
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Affiliation(s)
- Ayeong Byeon
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Hodong Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Jae Hyun Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Gi Mihn Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Jae W Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
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7
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Chandrasekaran S, Zhang C, Shu Y, Wang H, Chen S, Nesakumar Jebakumar Immanuel Edison T, Liu Y, Karthik N, Misra R, Deng L, Yin P, Ge Y, Al-Hartomy OA, Al-Ghamdi A, Wageh S, Zhang P, Bowen C, Han Z. Advanced opportunities and insights on the influence of nitrogen incorporation on the physico-/electro-chemical properties of robust electrocatalysts for electrocatalytic energy conversion. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214209] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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8
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Dar M, Majid K, Wahid M. In-plane ordering and nature of N-doping in hard carbon synthesized at low temperature govern the sodium-ion intercalation. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Kaur M, Kaur M, Singh D, Oliveira AC, Garg VK, Sharma VK. Synthesis of CaFe 2O 4-NGO Nanocomposite for Effective Removal of Heavy Metal Ion and Photocatalytic Degradation of Organic Pollutants. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1471. [PMID: 34206109 PMCID: PMC8226477 DOI: 10.3390/nano11061471] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 11/21/2022]
Abstract
This paper reports the successful synthesis of magnetic nanocomposite of calcium ferrite with nitrogen doped graphene oxide (CaFe2O4-NGO) for the effective removal of Pb(II) ions and photocatalytic degradation of congo red and p-nitrophenol. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), transmission electron microscopy (TEM), and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) techniques confirmed the presence of NGO and CaFe2O4 in the nanocomposite. The Mössbauer studies depicted the presence of paramagnetic doublet and sextet due to presence of CaFe2O4 NPs in the nanocomposite. The higher BET surface area in case of CaFe2O4-NGO (52.86 m2/g) as compared to CaFe2O4 NPs (23.45 m2/g) was ascribed to the effective modulation of surface in the presence of NGO. Adsorption followed the Langmuir model with maximum adsorption capacity of 780.5 mg/g for Pb(II) ions. Photoluminescence spectrum of nanocomposite displayed four-fold decrease in the intensity, as compared to ferrite NPs, thus confirming its high light capturing potential and enhanced photocatalytic activity. The presence of NGO in nanocomposite offered an excellent visible light driven photocatalytic performance. The quenching experiments supported ●OH and O2●- radicals as the main reactive species involved in carrying out the catalytic system. The presence of Pb(II) had synergistic effect on photocatalytic degradation of pollutants. This study highlights the synthesis of CaFe2O4-NGO nanocomposite as an efficient adsorbent and photocatalyst for remediating pollutants.
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Affiliation(s)
- Manmeet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141001, Punjab, India;
| | - Manpreet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141001, Punjab, India;
| | - Dhanwinder Singh
- Department of Soil Science, Punjab Agricultural University, Ludhiana 141001, Punjab, India;
| | - Aderbal C. Oliveira
- Institute of Physics, University of Brasilia, Brasilia 70000-000, Brazil; (A.C.O.); (V.K.G.)
| | - Vijayendra Kumar Garg
- Institute of Physics, University of Brasilia, Brasilia 70000-000, Brazil; (A.C.O.); (V.K.G.)
| | - Virender K. Sharma
- Program for Environment and Sustainability, Department of Environmental and Occupational Health, School of Public Health, Texas A&M University (TAMU), College Station, TX 77843-1266, USA
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10
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Zeng Z, Song R, Zhang S, Han X, Zhu Z, Chen X, Wang L. Biomimetic N-Doped Graphene Membrane for Proton Exchange Membranes. NANO LETTERS 2021; 21:4314-4319. [PMID: 33848172 DOI: 10.1021/acs.nanolett.1c00813] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Proton exchange membranes (PEMs) with both high selectivity and high permeance are of great demand in hydrogen-based applications, especially in fuel cells. Although graphene membranes have shown high selectivity of protons over other ions and molecules, the relatively low permeance of protons through perfect pristine graphene restricts its practical applications. Inspired by the nitrogen-assisted proton transport in biological systems, we introduced N-doping to increase the proton permeance and proposed a type of N-doped graphene membranes (NGMs) for proton exchange, which have both high proton permeance and high selectivity. Compared to the state-of-the-art commercial PEMs, the NGMs show significant increases in both areal proton conductivity (2-3 orders of magnitude) and selectivity of proton to methanol (1-2 orders of magnitude). The work realized the controllable tuning of proton permeance of the graphene membrane with N-doping and developed a new type of graphene-based PEMs with high performance for practical applications.
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Affiliation(s)
- Zhiyang Zeng
- Institute of Microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
| | - Ruiyang Song
- Institute of Microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
| | - Shengping Zhang
- Institute of Microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Xiao Han
- Institute of Microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Zhen Zhu
- Institute of Microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
| | - Xiaobo Chen
- Institute of Microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
| | - Luda Wang
- Institute of Microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
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11
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Tian J, Xing F, Gao Q. Graphene-Based Nanomaterials as the Cathode for Lithium-Sulfur Batteries. Molecules 2021; 26:2507. [PMID: 33923027 PMCID: PMC8123287 DOI: 10.3390/molecules26092507] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 11/25/2022] Open
Abstract
The global energy crisis and environmental problems are becoming increasingly serious. It is now urgent to vigorously develop an efficient energy storage system. Lithium-sulfur batteries (LSBs) are considered to be one of the most promising candidates for next-generation energy storage systems due to their high energy density. Sulfur is abundant on Earth, low-cost, and environmentally friendly, which is consistent with the characteristics of new clean energy. Although LSBs possess numerous advantages, they still suffer from numerous problems such as the dissolution and diffusion of sulfur intermediate products during the discharge process, the expansion of the electrode volume, and so on, which severely limit their further development. Graphene is a two-dimensional crystal material with a single atomic layer thickness and honeycomb bonding structure formed by sp2 hybridization of carbon atoms. Since its discovery in 2004, graphene has attracted worldwide attention due to its excellent physical and chemical properties. Herein, this review summarizes the latest developments in graphene frameworks, heteroatom-modified graphene, and graphene composite frameworks in sulfur cathodes. Moreover, the challenges and future development of graphene-based sulfur cathodes are also discussed.
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Affiliation(s)
| | - Fei Xing
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255049, China;
| | - Qiqian Gao
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255049, China;
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12
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One-Step Plasma Synthesis of Nitrogen-Doped Carbon Nanomesh. NANOMATERIALS 2021; 11:nano11040837. [PMID: 33805953 PMCID: PMC8064338 DOI: 10.3390/nano11040837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/17/2021] [Accepted: 03/22/2021] [Indexed: 11/23/2022]
Abstract
A one-step method for plasma synthesis of nitrogen-doped carbon nanomesh is presented. The method involves a molten polymer, which is a source of carbon, and inductively coupled nitrogen plasma, which is a source of highly reactive nitrogen species. The method enables the deposition of the nanocarbon layer at a rate of almost 0.1 µm/s. The deposited nanocarbon is in the form of randomly oriented multilayer graphene nanosheets or nanoflakes with a thickness of several nm and an area of the order of 1000 nm2. The concentration of chemically bonded nitrogen on the surface of the film increases with deposition time and saturates at approximately 15 at.%. Initially, the oxygen concentration is up to approximately 10 at.% but decreases with treatment time and finally saturates at approximately 2 at.%. Nitrogen is bonded in various configurations, including graphitic, pyridinic, and pyrrolic nitrogen.
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13
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Korivand M, Zamani M. Surface modification of graphene by coupling with electron deficient radicals. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121851] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Wu SC, Chang PH, Chou SH, Huang CY, Liu TC, Peng CH. Waffle-Like Carbons Combined with Enriched Mesopores and Highly Heteroatom-Doped Derived from Sandwiched MOF/LDH/MOF for High-Rate Supercapacitor. NANOMATERIALS 2020; 10:nano10122388. [PMID: 33265940 PMCID: PMC7760639 DOI: 10.3390/nano10122388] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 12/04/2022]
Abstract
Supercapacitors (SCs) are promising for powering mobile devices, electric vehicles and smart power grids due to their fast charge/discharge rate, high power capability and robust cycle stability. Nitrogen-doped porous carbons are great alternatives because they provide pseudocapacitance without losing their power rate. Nanoporous carbon derived from metal organic frameworks (MOFs) is an ideal precursor for preparing heteroatom-doped carbons due to their abundant nitrogen contents and incredible specific surface areas. However, severe aggregations and the leakage of nitrogen can occur during harsh carbonization. In this study, we used CoAl-LDH (cobalt aluminum layered double hydroxide) as an in-situ growth substrate, allowing Co-based MOF to uniformly grow onto the CoAl-LDH to form a sandwiched MOF/LDH/MOF structure. After acid etching, we obtained waffle-like nanoporous carbons (WNPC). WNPC exhibited high nitrogen and oxygen retention (7.5 wt% and 9.1 wt%) and a broad mesopores distribution with specific surface areas of 594 m2g−1, which promoted a sieving effect. This renders a specific capacitance of 300.7 F·g−1 at 1 A·g−1 and the high retention (72%) of capacitance at 20 A·g−1, ensuring its use at high-rate supercapacitor electrodes. Finally, the WNPC symmetric supercapacitor reaches a superior specific energy of 27 W·h·kg−1 at a power of 500 W·kg−1, and a good cycle stability (85% capacitance retention after 10,000 cycles).
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Affiliation(s)
- Szu-Chen Wu
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 300, Taiwan; (S.-C.W.); (S.-H.C.); (C.-Y.H.)
| | - Po-Hsueh Chang
- Department of Chemical and Materials Engineering, MingHsin University of Science and Technology, 1 Xinxing Road, Xinfeng, Hsinchu 304, Taiwan;
| | - Syun-Hong Chou
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 300, Taiwan; (S.-C.W.); (S.-H.C.); (C.-Y.H.)
| | - Chih-Yang Huang
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 300, Taiwan; (S.-C.W.); (S.-H.C.); (C.-Y.H.)
| | - Ta-Chung Liu
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 300, Taiwan; (S.-C.W.); (S.-H.C.); (C.-Y.H.)
- Correspondence: (T.-C.L.); (C.-H.P.)
| | - Cheng-Hsiung Peng
- Department of Chemical and Materials Engineering, MingHsin University of Science and Technology, 1 Xinxing Road, Xinfeng, Hsinchu 304, Taiwan;
- Correspondence: (T.-C.L.); (C.-H.P.)
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15
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Ghanbari MH, Norouzi Z. A new nanostructure consisting of nitrogen-doped carbon nanoonions for an electrochemical sensor to the determination of doxorubicin. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Sohouli E, Shahdost-Fard F, Rahimi-Nasrabadi M, Plonska-Brzezinska ME, Ahmadi F. Introducing a novel nanocomposite consisting of nitrogen-doped carbon nano-onions and gold nanoparticles for the electrochemical sensor to measure acetaminophen. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114309] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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17
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Soysal F, Çıplak Z, Gökalp C, Getiren B, Yıldız N. One‐step hydrothermal synthesis of nitrogen doped reduced graphene oxide‐silver nanocomposites: Catalytic performance. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5621] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Furkan Soysal
- Department of Chemical EngineeringAnkara Yıldırım Beyazıt University 06010 Etlik, Ankara Turkey
| | - Zafer Çıplak
- Department of Chemical EngineeringAnkara University 06100 Tandoğan, Ankara Turkey
| | - Ceren Gökalp
- Department of Chemical EngineeringAnkara University 06100 Tandoğan, Ankara Turkey
| | - Bengü Getiren
- Department of Chemical EngineeringAnkara University 06100 Tandoğan, Ankara Turkey
| | - Nuray Yıldız
- Department of Chemical EngineeringAnkara University 06100 Tandoğan, Ankara Turkey
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18
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Coros M, Varodi C, Pogacean F, Gal E, Pruneanu SM. Nitrogen-Doped Graphene: The Influence of Doping Level on the Charge-Transfer Resistance and Apparent Heterogeneous Electron Transfer Rate. SENSORS (BASEL, SWITZERLAND) 2020; 20:E1815. [PMID: 32218144 PMCID: PMC7180784 DOI: 10.3390/s20071815] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/20/2020] [Accepted: 03/23/2020] [Indexed: 01/17/2023]
Abstract
Three nitrogen-doped graphene samples were synthesized by the hydrothermal method using urea as doping/reducing agent for graphene oxide (GO), previously dispersed in water. The mixture was poured into an autoclave and placed in the oven at 160 °C for 3, 8 and 12 h. The samples were correspondingly denoted NGr-1, NGr-2 and NGr-3. The effect of the reaction time on the morphology, structure and electrochemical properties of the resulting materials was thoroughly investigated using scanning electron microscopy (SEM) Raman spectroscopy, X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), elemental analysis, Cyclic Voltammetry (CV) and electrochemical impedance spectroscopy (EIS). For NGr-1 and NGr-2, the nitrogen concentration obtained from elemental analysis was around 6.36 wt%. In the case of NGr-3, a slightly higher concentration of 6.85 wt% was obtained. The electrochemical studies performed with NGr modified electrodes proved that the charge-transfer resistance (Rct) and the apparent heterogeneous electron transfer rate constant (Kapp) depend not only on the nitrogen doping level but also on the type of nitrogen atoms found at the surface (pyrrolic-N, pyridinic-N or graphitic-N). In our case, the NGr-1 sample which has the lowest doping level and the highest concentration of pyrrolic-N among all nitrogen-doped samples exhibits the best electrochemical parameters: a very small Rct (38.3 Ω), a large Kapp (13.9 × 10-2 cm/s) and the best electrochemical response towards 8-hydroxy-2'-deoxyguanosine detection (8-OHdG).
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Affiliation(s)
- Maria Coros
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, 400293 Cluj-Napoca, Romania; (C.V.); (F.P.)
| | - Codruta Varodi
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, 400293 Cluj-Napoca, Romania; (C.V.); (F.P.)
| | - Florina Pogacean
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, 400293 Cluj-Napoca, Romania; (C.V.); (F.P.)
| | - Emese Gal
- Department of Chemistry and Chemical Engineering, Hungarian Line of Study, Babes-Bolyai University, 11 Arany János St., 400028 Cluj-Napoca, Romania;
| | - Stela M. Pruneanu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street, No. 67-103, 400293 Cluj-Napoca, Romania; (C.V.); (F.P.)
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Mohammed LJ, Omer KM. Dual functional highly luminescence B, N Co-doped carbon nanodots as nanothermometer and Fe 3+/Fe 2+ sensor. Sci Rep 2020; 10:3028. [PMID: 32080282 PMCID: PMC7033239 DOI: 10.1038/s41598-020-59958-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 02/05/2020] [Indexed: 12/12/2022] Open
Abstract
Dual functional fluorescence nanosensors have many potential applications in biology and medicine. Monitoring temperature with higher precision at localized small length scales or in a nanocavity is a necessity in various applications. As well as the detection of biologically interesting metal ions using low-cost and sensitive approach is of great importance in bioanalysis. In this paper, we describe the preparation of dual-function highly fluorescent B, N-co-doped carbon nanodots (CDs) that work as chemical and thermal sensors. The CDs emit blue fluorescence peaked at 450 nm and exhibit up to 70% photoluminescence quantum yield with showing excitation-independent fluorescence. We also show that water-soluble CDs display temperature-dependent fluorescence and can serve as highly sensitive and reliable nanothermometers with a thermo-sensitivity 1.8% °C-1, and wide range thermo-sensing between 0-90 °C with excellent recovery. Moreover, the fluorescence emission of CDs are selectively quenched after the addition of Fe2+ and Fe3+ ions while show no quenching with adding other common metal cations and anions. The fluorescence emission shows a good linear correlation with concentration of Fe2+ and Fe3+ (R2 = 0.9908 for Fe2+ and R2 = 0.9892 for Fe3+) with a detection limit of of 80.0 ± 0.5 nM for Fe2+ and 110.0 ± 0.5 nM for Fe3+. Considering the high quantum yield and selectivity, CDs are exploited to design a nanoprobe towards iron detection in a biological sample. The fluorimetric assay is used to detect Fe2+ in iron capsules and total iron in serum samples successfully.
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Affiliation(s)
- Lazo Jazaa Mohammed
- Department of Chemistry, College of Science, University of Sulaimani, Qliasan St, Sulaimani City, Kurdistan Region, Iraq
| | - Khalid M Omer
- Department of Chemistry, College of Science, University of Sulaimani, Qliasan St, Sulaimani City, Kurdistan Region, Iraq.
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Controlling Nitrogen Doping in Graphene with Atomic Precision: Synthesis and Characterization. NANOMATERIALS 2019; 9:nano9030425. [PMID: 30871112 PMCID: PMC6474020 DOI: 10.3390/nano9030425] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/06/2019] [Indexed: 12/22/2022]
Abstract
Graphene provides a unique platform for the detailed study of its dopants at the atomic level. Previously, doped materials including Si, and 0D-1D carbon nanomaterials presented difficulties in the characterization of their dopants due to gradients in their dopant concentration and agglomeration of the material itself. Graphene's two-dimensional nature allows for the detailed characterization of these dopants via spectroscopic and atomic resolution imaging techniques. Nitrogen doping of graphene has been well studied, providing insights into the dopant bonding structure, dopant-dopant interaction, and spatial segregation within a single crystal. Different configurations of nitrogen within the carbon lattice have different electronic and chemical properties, and by controlling these dopants it is possible to either n- or p-type dope graphene, grant half-metallicity, and alter nitrogen doped graphene's (NG) catalytic and sensing properties. Thus, an understanding and the ability to control different types of nitrogen doping configurations allows for the fine tuning of NG's properties. Here we review the synthesis, characterization, and properties of nitrogen dopants in NG beyond atomic dopant concentration.
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Oxygen Reduction Reaction Activity of Nano-Flake Carbon-Deposited Pt75Ni25(111) Surfaces. Electrocatalysis (N Y) 2019. [DOI: 10.1007/s12678-019-00517-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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