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Heo E, Noh S, Lee U, Le TH, Lee H, Jo H, Lee S, Yoon H. Surfactant-in-Polymer Templating for Fabrication of Carbon Nanofibers with Controlled Interior Substructures: Designing Versatile Materials for Energy Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007775. [PMID: 33739582 DOI: 10.1002/smll.202007775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 02/17/2021] [Indexed: 06/12/2023]
Abstract
A simple, scalable, surfactant-in-polymer templating approach is demonstrated to create controlled long-range secondary substructures in a primary structure. A metal bis(2-ethylhexyl) sulfosuccinate (MAOT) as the surfactant is shown to be capable of serving as a sacrificial template and metal precursor in carbon nanofibers. The low interfacial tension and controllable dimensions of the MAOT are maintained in the solid-phase polymer, even during electrospinning and heat-treatment processes, allowing for the long-range uniform formation of substructures in the nanofibers. The MAOT content is found to be a critical parameter for tailoring the diameter of the nanofibers and their textural properties, such as size and volume of interior pores. The metal counterion species in the MAOT determine the introduction of metallic phases in the nanofiber interior. The incorporation of MAOT with Na as the counterion into the polymer phase leads to the formation of a built-in pore structure in the nanofibers. In contrast, MAOT with Fe as a counterion generates unique iron-in-pore substructures in the nanofibers (FeCNFs). The FeCNFs exhibit outstanding charge storage and water splitting performances. As a result, the MAOT-in-polymer templating approach can be extended to combinations of various metal precursors and thus create desirable functionalities for different target applications.
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Affiliation(s)
- Eunseo Heo
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Seonmyeong Noh
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Unhan Lee
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Thanh-Hai Le
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Haney Lee
- Alan G. MacDiarmid Energy Research Institute, School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Hyemi Jo
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Sanghyuck Lee
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Hyeonseok Yoon
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
- Alan G. MacDiarmid Energy Research Institute, School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
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Affiliation(s)
- Chang Wan Kang
- Department of Chemistry Sungkyunkwan University Suwon 16419 Korea
| | - Seung Uk Son
- Department of Chemistry Sungkyunkwan University Suwon 16419 Korea
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Cho IW, Son SU, Yang M, Choi J. Preparation of microporous MoS2@carbon nanospheres for the electrochemical detection of hydrogen peroxide. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114739] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Park SY, Kang CW, Lee SM, Kim HJ, Ko YJ, Choi J, Son SU. Nanoparticulate Conjugated Microporous Polymer with Post-Modified Benzils for Enhanced Pseudocapacitor Performance. Chemistry 2020; 26:12343-12348. [PMID: 32621780 DOI: 10.1002/chem.202002311] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/25/2020] [Indexed: 11/10/2022]
Abstract
Conjugated microporous polymer (CMP)-based energy-storage materials were developed for pseudocapacitors. Nanoparticulate CMP (N-CMP) with an average diameter of 41±4 nm was prepared through kinetic growth control in the Sonogashira coupling of 1,3,5-triethynylbenzene with 1,4-diiodobenzene. The N-CMP is rich in a diphenylacetylene moiety in its chemical structure. Through the FeCl3 -catalyzed oxidation of diphenylacetylene moieties, N-CMP with benzil moieties (N-CMP-BZ) was prepared and showed enhanced electrochemical performance as an electrode material of pseudocapacitors, compared with CMP, CMP-BZ, and N-CMP. In model studies, the benzil was redox active and showed two-electron reduction behavior. The excellent electrochemical performance of N-CMP-BZ is attributable to the enhanced utilization of functional sites by a nanosize effect and the additional redox contribution of benzil moieties.
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Affiliation(s)
- So Young Park
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
| | - Chang Wan Kang
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
| | - Sang Moon Lee
- Korea Basic Science Institute, Daejeon, 34133, Korea
| | - Hae Jin Kim
- Korea Basic Science Institute, Daejeon, 34133, Korea
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Seoul, 08826, Korea
| | - Jaewon Choi
- Department of Chemistry, Gyeongsang National University, Jinju, 52828, Korea
| | - Seung Uk Son
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
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Park SI, Kang CW, Cho SY, Lee SM, Kim HJ, Ko YJ, Choi J, Son SU. Fabrication of Poly(ethylene terephthalate) Fiber@Microporous Organic Polymer with Amino Groups@Cu Films for Flexible and Metal-Economical Electromagnetic Interference Shielding Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8745-8752. [PMID: 32633126 DOI: 10.1021/acs.langmuir.0c00962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Flexible and metal-economical electromagnetic interference (EMI) shielding films were fabricated based on microporous organic polymer (MOP) chemistry. MOP with amino groups (MOP-A) could be introduced to the surface of poly(ethylene terephthalate) (PET) fibers. Due to the microporosity and amino groups of MOP-A, Ag+ could be easily incorporated into PET@MOP-A. Through Ag-catalyzed electroless Cu deposition, PET@MOP-A@Cu films were fabricated. The morphological and chemical structures of the PET@MOP-A@Cu were characterized by scanning electron microscopy, X-ray diffraction studies, and X-ray photoelectron spectroscopy. Among the films, the PET@MOP-A@Cu-40 with 41 wt % Cu (a thickness of 0.64 μm) showed excellent EMI shielding performance with 64.3-73.8 dB against an EM of 8-12 GHz. Moreover, it showed retention of the original EMI shielding performance against 1000 bending (R = 5 mm) tests.
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Affiliation(s)
- Seong In Park
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Chang Wan Kang
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Se Youn Cho
- Carbon Composite Materials Research Center, Korea Institute of Science and Technology (KIST), Wanju 55324, Korea
| | | | - Hae Jin Kim
- Korea Basic Science Institute, Daejeon 34133, Korea
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Seoul 08826, Korea
| | - Jaewon Choi
- Department of Chemistry, Gyeongsang National University, Jinju 52828, Korea
| | - Seung Uk Son
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
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Kim S, Cha W, Ramadass K, Singh G, Kim IY, Vinu A. Single-Step Synthesis of Mesoporous Carbon Nitride/Molybdenum Sulfide Nanohybrids for High-Performance Sodium-Ion Batteries. Chem Asian J 2020; 15:1863-1868. [PMID: 32329239 DOI: 10.1002/asia.202000349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/21/2020] [Indexed: 11/10/2022]
Abstract
Molybdenum disulfide (MoS2 ) is a promising candidate as a high-performing anode material for sodium-ion batteries (SIBs) due to its large interlayer spacing. However, it suffers from continued capacity fading. This problem could be overcome by hybridizing MoS2 with nanostructured carbon-based materials, but it is quite challenging. Herein, we demonstrate a single-step strategy for the preparation of MoS2 coupled with ordered mesoporous carbon nitride using a nanotemplating approach which involves the pyrolysis of phosphomolybdic acid hydrate (PMA), dithiooxamide (DTO) and 5-amino-1H-tetrazole (5-ATTZ) together in the porous channels of 3D mesoporous silica template. The sulfidation to MoS2 , polymerization to carbon nitride (CN) and their hybridization occur simultaneously within a mesoporous silica template during a calcination process. The CN/MoS2 hybrid prepared by this unique approach is highly pure and exhibits good crystallinity as well as delivers excellent performance for SIBs with specific capacities of 605 and 431 mAhg-1 at current densities of 100 and 1000 mAg-1 , respectively, for SIBs.
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Affiliation(s)
- Sungho Kim
- Global Innovative Center for Advanced Nanomaterials (GICAN) School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Wangsoo Cha
- Global Innovative Center for Advanced Nanomaterials (GICAN) School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Kavitha Ramadass
- Global Innovative Center for Advanced Nanomaterials (GICAN) School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Gurwinder Singh
- Global Innovative Center for Advanced Nanomaterials (GICAN) School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - In Young Kim
- Global Innovative Center for Advanced Nanomaterials (GICAN) School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN) School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
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Ryu SH, Choi SJ, Seon JH, Jo B, Lee SM, Kim HJ, Ko YJ, Ko KC, Ahn TK, Son SU. Visible light-driven Suzuki–Miyaura reaction by self-supported Pd nanocatalysts in the formation of Stille coupling-based photoactive microporous organic polymers. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00997k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Stille coupling results in deposition of Pd NPs on microporous organic polymers, showing excellent photocatalytic performance.
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Affiliation(s)
- Sang Hyun Ryu
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Sung Jae Choi
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Ji Hui Seon
- Department of Chemistry Education
- Chonnam National University
- Gwangju 61186
- Korea
| | - Bonghyun Jo
- Department of Energy Science
- Sungkyunkwan University
- Suwon 16419
- Korea
| | | | - Hae Jin Kim
- Korea Basic Science Institute
- Daejeon 34133
- Korea
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance
- National Center for Inter-University Research Facilities (NCIRF)
- Seoul National University
- Seoul 08826
- Korea
| | - Kyoung Chul Ko
- Department of Chemistry Education
- Chonnam National University
- Gwangju 61186
- Korea
| | - Tae Kyu Ahn
- Department of Energy Science
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Seung Uk Son
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
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