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Zhang Y, Ma Q, Li H, Yang YW, Luo J. Robust Production of Ultrahigh Surface Area Carbon Sheets for Energy Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800133. [PMID: 29638037 DOI: 10.1002/smll.201800133] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/11/2018] [Indexed: 05/03/2023]
Abstract
Nanostructured carbon materials play essential roles in electrochemical energy storage devices. However, scalable production of high surface area carbon with a cost-effective process while controlling the morphology is challenging. Herein, a one-step procedure to produce carbon sheets with very high specific surface area up to 3411 m2 g-1 by direct pyrolysis of dipotassium ethylene diamine tetraacetate is reported. Unlike that of biomass-pyrolyzed carbons, the surface area of prepared carbon sheets is not sensitive to pyrolysis conditions (e.g., heating temperature and time), which makes the production robust and scalable. Moreover, the pore structure is stable against posttreatments, including solvent washing, which are detrimental to that of graphene-based soft sheet assemblies. When used as supercapacitor electrodes, the ultrahigh surface area carbon sheets (HSACS) show a high specific capacitance of 268 F g-1 at 5 mV s-1 , and retain 70% of the capacitance at 100 times higher scan rate in 6 m KOH aqueous electrolyte. Furthermore, the HSACS also exhibit a high specific capacitance of 266 F g-1 within a 1.6 V symmetric supercapacitor potential window in 2 m Li2 SO4 aqueous electrolyte. The symmetric supercapacitor delivers a maximum specific energy of 23.6 W h kg-1 and high power density of 6.4 kW kg-1 .
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Affiliation(s)
- Yao Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Qingtao Ma
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Huan Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Ying-Wei Yang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China
| | - Jiayan Luo
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin, 300071, China
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202
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Yang Y, Pei H, Chen G, Webb KT, Martinez-Miranda LJ, Lloyd IK, Lu Z, Liu K, Nie Z. Phase behaviors of colloidal analogs of bent-core liquid crystals. SCIENCE ADVANCES 2018; 4:eaas8829. [PMID: 29756038 PMCID: PMC5947975 DOI: 10.1126/sciadv.aas8829] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 03/20/2018] [Indexed: 05/29/2023]
Abstract
Bent-core liquid crystal (LC) molecules are known to form mesophases with fascinating polar order and supramolecular chirality despite the achiral nature of the mesogens. The assembly of colloidal particles with geometrical similarity to bent-core molecular mesogens not only provides new insights into the physical behaviors of atoms or molecules but also leads to new materials with broad applications. Despite tremendous progress in colloidal synthesis and assembly, there has been a lack of colloidal model systems of bent-core molecular mesogens for LC property discovery and application development. This article describes a systematic study on the phase behaviors of colloidal analogs of bent-core LC mesogens in both experiments and simulations. We demonstrated that bent rods with controlled bending angle (α) and aspect ratio (L/D, with L and D as the length and diameter of each rod arm, respectively) can spontaneously assemble into several typical banana phases including smectic A, smectic C, synclinic tilted antiferroelectric-like smectic, and twist smectic phases, resembling bent-core LC molecules. The formation and transition of these phases were found to be strongly dependent on the geometric parameters of rods. Phase diagrams were developed to illustrate the existence and stability range of all the LC phases in α and L/D space. This work opens the door to the development of novel complex types of molecular or colloidal self-organization and new functional materials with electro-optical or nonlinear optical properties.
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Affiliation(s)
- Yang Yang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Hanwen Pei
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
| | - Guangdong Chen
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Kyle Thomas Webb
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Luz J. Martinez-Miranda
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Isabel K. Lloyd
- Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA
| | - Zhongyuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
| | - Kun Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
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203
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Wang GF, Qin H, Gao X, Cao Y, Wang W, Wang FC, Wu HA, Cong HP, Yu SH. Graphene Thin Films by Noncovalent-Interaction-Driven Assembly of Graphene Monolayers for Flexible Supercapacitors. Chem 2018. [DOI: 10.1016/j.chempr.2018.01.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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204
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Lv T, Liu M, Zhu D, Gan L, Chen T. Nanocarbon-Based Materials for Flexible All-Solid-State Supercapacitors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705489. [PMID: 29479744 DOI: 10.1002/adma.201705489] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 10/26/2017] [Indexed: 05/20/2023]
Abstract
Because of the rapid development of flexible electronics, it is important to develop high-performance flexible energy-storage devices, such as supercapacitors and metal-ion batteries. Compared with metal-ion batteries, supercapacitors exhibit higher power density, longer cycling life, and excellent safety, and they can be easily fabricated into all-solid-state devices by using polymer gel electrolytes. All-solid-state supercapacitors (ASSSCs) have the advantages of being lightweight and flexible, thus showing great potential to be used as power sources for flexible portable electronics. Because of their high specific surface area and excellent electrical and mechanical properties, nanocarbon materials (such as carbon nanotubes, graphene, carbon nanofibers, and so on) have been widely used as efficient electrode materials for flexible ASSSCs, and great achievements have been obtained. Here, the recent advances in flexible ASSSCs are summarized, from design strategies to fabrication techniques for nanocarbon electrodes and devices. Current challenges and future perspectives are also discussed.
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Affiliation(s)
- Tian Lv
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, and Institute of Advanced Study, Tongji University, Shanghai, 200092, China
| | - Mingxian Liu
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, and Institute of Advanced Study, Tongji University, Shanghai, 200092, China
| | - Dazhang Zhu
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, and Institute of Advanced Study, Tongji University, Shanghai, 200092, China
| | - Lihua Gan
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, and Institute of Advanced Study, Tongji University, Shanghai, 200092, China
| | - Tao Chen
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, and Institute of Advanced Study, Tongji University, Shanghai, 200092, China
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205
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Xing C, Chen S, Qiu M, Liang X, Liu Q, Zou Q, Li Z, Xie Z, Wang D, Dong B, Liu L, Fan D, Zhang H. Conceptually Novel Black Phosphorus/Cellulose Hydrogels as Promising Photothermal Agents for Effective Cancer Therapy. Adv Healthc Mater 2018; 7:e1701510. [PMID: 29508554 DOI: 10.1002/adhm.201701510] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 01/31/2018] [Indexed: 11/11/2022]
Abstract
Black phosphorus (BP) has recently emerged as an intriguing photothermal agent in photothermal therapy (PTT) against cancer by virtue of its high photothermal efficiency, biocompatibility, and biodegradability. However, naked BP is intrinsically characterized by easy oxidation (or natural degradation) and sedimentation inside the tumor microenvironment, leading to a short-term therapeutic and inhomogeneous photothermal effect. Development of BP-based nanocomposites for PTT against cancer therefore remains challenging. The present work demonstrates that green and injectable composite hydrogels based on cellulose and BP nanosheets (BPNSs) are of great efficiency for PTT against cancer. The resultant cellulose/BPNS-based hydrogel possesses 3D networks with irregular micrometer-sized pores and thin, strong cellulose-formed walls and exhibits an excellent photothermal response, enhanced stability, and good flexibility. Importantly, this hydrogel nanoplatform is totally harmless and biocompatible both in vivo and in vitro. This work may facilitate the development of BP-polymer-based photothermal agents in the form of hydrogels for biomedical-related clinic applications.
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Affiliation(s)
- Chenyang Xing
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Shiyou Chen
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Meng Qiu
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Xin Liang
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
- College of Materials Science and Engineering; Shenzhen University; Shenzhen 518060 P. R. China
| | - Quan Liu
- Department of Hepatobiliary and Pancreatic Surgery; Shenzhen People's Hospital; Second Clinical Medical College of Jinan University; Shenzhen 518060 Guangdong Province China
- Integrated Chinese and Western Medicine Postdoctoral Research Station; Jinan University; Guangzhou 510632 China
| | - Qingshuang Zou
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Zhongjun Li
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Zhongjian Xie
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Dou Wang
- Department of Hepatobiliary and Pancreatic Surgery; Shenzhen People's Hospital; Second Clinical Medical College of Jinan University; Shenzhen 518060 Guangdong Province China
- Integrated Chinese and Western Medicine Postdoctoral Research Station; Jinan University; Guangzhou 510632 China
| | - Biqin Dong
- School of Civil Engineering; Guangdong Province Key Laboratory of Durability for Marine Civil Engineering; Shenzhen University; Shenzhen 518060 China
| | - Liping Liu
- Department of Hepatobiliary and Pancreatic Surgery; Shenzhen People's Hospital; Second Clinical Medical College of Jinan University; Shenzhen 518060 Guangdong Province China
| | - Dianyuan Fan
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
| | - Han Zhang
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education; College of Optoelectronic Engineering; Shenzhen University; Shenzhen 518060 China
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206
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Ma T, Gao HL, Cong HP, Yao HB, Wu L, Yu ZY, Chen SM, Yu SH. A Bioinspired Interface Design for Improving the Strength and Electrical Conductivity of Graphene-Based Fibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706435. [PMID: 29484728 DOI: 10.1002/adma.201706435] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 12/22/2017] [Indexed: 06/08/2023]
Abstract
Graphene-based fibers (GBFs) are attractive for next-generation wearable electronics due to their potentially high mechanical strength, superior flexibility, and excellent electrical and thermal conductivity. Many efforts have been devoted to improving these properties of GBFs in the past few years. However, fabricating GBFs with high strength and electrical conductivity simultaneously remains as a great challenge. Herein, inspired by nacre-like multilevel structural design, an interface-reinforced method is developed to improve both the mechanical property and electrical conductivity of the GBFs by introducing polydopamine-derived N-doped carbon species as resistance enhancers, binding agents, and conductive connection "bridges." Remarkably, both the tensile strength and electrical conductivity of the obtained GBFs are significantly improved to ≈724 MPa and ≈6.6 × 104 S m-1 , respectively, demonstrating great superiority compared to previously reported similar GBFs. These outstanding integrated performances of the GBFs provide it with great application potential in the fields of flexible and wearable microdevices such as sensors, actuators, supercapacitors, and batteries.
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Affiliation(s)
- Tao Ma
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Huai-Ling Gao
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Huai-Ping Cong
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Hong-Bin Yao
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Liang Wu
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Zi-You Yu
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Si-Ming Chen
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China
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207
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Kim SJ, Shin DH, Choi YS, Rho H, Park M, Moon BJ, Kim Y, Lee SK, Lee DS, Kim TW, Lee SH, Kim KS, Hong BH, Bae S. Ultrastrong Graphene-Copper Core-Shell Wires for High-Performance Electrical Cables. ACS NANO 2018; 12:2803-2808. [PMID: 29510020 DOI: 10.1021/acsnano.8b00043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Recent development in mobile electronic devices and electric vehicles requires electrical wires with reduced weight as well as enhanced stability. In addition, since electric energy is mostly generated from power plants located far from its consuming places, mechanically stronger and higher electric power transmission cables are strongly demanded. However, there has been no alternative materials that can practically replace copper materials. Here, we report a method to prepare ultrastrong graphene fibers (GFs)-Cu core-shell wires with significantly enhanced electrical and mechanical properties. The core GFs are synthesized by chemical vapor deposition, followed by electroplating of Cu shells, where the large surface area of GFs in contact with Cu maximizes the mechanical toughness of the core-shell wires. At the same time, the unique electrical and thermal characteristics of graphene allow a ∼10 times higher current density limit, providing more efficient and reliable delivery of electrical energies through the GFs-Cu wires. We believe that our results would be useful to overcome the current limit in electrical wires and cables for lightweight, energy-saving, and high-power applications.
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Affiliation(s)
- Sang Jin Kim
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
| | - Dong Heon Shin
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Yong Seok Choi
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Hokyun Rho
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
| | - Min Park
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
| | - Byung Joon Moon
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
| | - Youngsoo Kim
- Graphene Square Inc., Inter-university Semiconductor Research Center , Seoul National University , Seoul 08826 , Republic of Korea
| | - Seuoung-Ki Lee
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
| | - Dong Su Lee
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
| | - Tae-Wook Kim
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
- Department of Nanomaterials and Nano Science , Korea University of Science and Technology (UST) , Daejeon 34113 , Republic of Korea
| | - Sang Hyun Lee
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
- Department of Nanomaterials and Nano Science , Korea University of Science and Technology (UST) , Daejeon 34113 , Republic of Korea
| | - Keun Soo Kim
- Department of Physics & Astronomy , Sejong University , Seoul 05006 , Republic of Korea
| | - Byung Hee Hong
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Sukang Bae
- Applied Quantum Composites Research Center, Institute of Advanced Composite Materials , Korea Institute of Science and Technology , Jeollabuk-do 55324 , Republic of Korea
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208
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Shintate M, Inadomi T, Yamamoto S, Kuboyama Y, Ohsedo Y, Arimura T, Nakazumi T, Hara Y, Miyamoto N. Anisotropic Self-Oscillating Reaction in Liquid Crystalline Nanosheet Hydrogels. J Phys Chem B 2018; 122:2957-2961. [PMID: 29455532 DOI: 10.1021/acs.jpcb.7b11631] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Anisotropic chemical wave propagation of self-oscillating Belousov-Zhabotinsky (BZ) reaction was demonstrated in the poly( N-isopropylacrylamide) gel films embedded with macroscopically aligned liquid crystalline inorganic nanosheets. Although the average propagation rate of chemical wave v̅ was 3.56 mm min-1 in the gels without nanosheets, the propagation was retarded in the gels with 1 wt % of nanosheets: [Formula: see text] = 1.89 mm min-1 and [Formula: see text] = 1.33 mm min-1 along the direction parallel and perpendicular to the nanosheet planes, respectively. Thus, the wave propagation is anisotropic with the anisotropy ratio [Formula: see text] = 1.42 in these gels and the periodic patterns formed by the BZ reaction were concentric ellipses, different from circles seen in isotropic gels. Furthermore, the propagation rate and degree of anisotropy were controllable by nanosheet concentration. These phenomena can be explained that the diffusion of molecules inside the gel is effectively hindered along the direction perpendicular to the nanosheet planes due to the very large aspect ratio of the aligned nanosheets. The present systems will be applicable for anisotropic self-oscillating soft actuators with one-dimensional motions as well as for ideal model system of BZ reactions.
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Affiliation(s)
- Morio Shintate
- Department of Life, Environment and Materials Science , Fukuoka Institute of Technology , 3-30-1, Wajirohigashi , Higashiku, Fukuoka 811-0295 , Japan
| | - Takumi Inadomi
- Department of Life, Environment and Materials Science , Fukuoka Institute of Technology , 3-30-1, Wajirohigashi , Higashiku, Fukuoka 811-0295 , Japan
| | - Shinya Yamamoto
- Department of Life, Environment and Materials Science , Fukuoka Institute of Technology , 3-30-1, Wajirohigashi , Higashiku, Fukuoka 811-0295 , Japan
| | - Yusuke Kuboyama
- Department of Life, Environment and Materials Science , Fukuoka Institute of Technology , 3-30-1, Wajirohigashi , Higashiku, Fukuoka 811-0295 , Japan
| | - Yutaka Ohsedo
- Department of Life, Environment and Materials Science , Fukuoka Institute of Technology , 3-30-1, Wajirohigashi , Higashiku, Fukuoka 811-0295 , Japan
| | - Takashi Arimura
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba , Ibaraki 305-8565 , Japan
| | - Tomoka Nakazumi
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba , Ibaraki 305-8565 , Japan
| | - Yusuke Hara
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba , Ibaraki 305-8565 , Japan
| | - Nobuyoshi Miyamoto
- Department of Life, Environment and Materials Science , Fukuoka Institute of Technology , 3-30-1, Wajirohigashi , Higashiku, Fukuoka 811-0295 , Japan
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209
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Leite Rubim R, Abrantes Barros M, Missègue T, Bougis K, Navailles L, Nallet F. Highly confined stacks of graphene oxide sheets in water. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2018; 41:30. [PMID: 29546498 DOI: 10.1140/epje/i2018-11636-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 02/21/2018] [Indexed: 06/08/2023]
Abstract
Since the discovery of graphene oxide (GO), the most accessible of the precursors of graphene, this material has been widely studied for applications in science and technology. In this work, we describe a procedure to obtain GO dispersions in water at high concentrations, these highly dehydrated dispersions being in addition fully redispersible by dilution. With the availability of such concentrated samples, it was possible to investigate the structure of hydrated GO sheets in a previously unexplored range of concentrations, and to evidence a structural phase transition. Tentatively applying models designed for describing the small-angle scattering curve in the Smectic A (or [Formula: see text]) phase of lyotropic systems, it was possible to extract elastic parameters characterising the system on the dilute side of the transition, thereby evidencing the relevance of both electrostatic and steric (Helfrich) interactions in stabilising aqueous lamellar stacks of GO sheets.
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Affiliation(s)
- Rafael Leite Rubim
- Université de Bordeaux, Centre de recherche Paul-Pascal-CNRS, 115 avenue du Docteur-Schweitzer, F-33600, Pessac, France
| | - Margarida Abrantes Barros
- Université de Bordeaux, Centre de recherche Paul-Pascal-CNRS, 115 avenue du Docteur-Schweitzer, F-33600, Pessac, France
- Técnico Lisboa, Av. Rovisco Pais, 1, PT-1049-001, Lisboa, Portugal
| | - Thomas Missègue
- Université de Bordeaux, Centre de recherche Paul-Pascal-CNRS, 115 avenue du Docteur-Schweitzer, F-33600, Pessac, France
| | - Kévin Bougis
- Université de Bordeaux, Centre de recherche Paul-Pascal-CNRS, 115 avenue du Docteur-Schweitzer, F-33600, Pessac, France
| | - Laurence Navailles
- Université de Bordeaux, Centre de recherche Paul-Pascal-CNRS, 115 avenue du Docteur-Schweitzer, F-33600, Pessac, France
| | - Frédéric Nallet
- Université de Bordeaux, Centre de recherche Paul-Pascal-CNRS, 115 avenue du Docteur-Schweitzer, F-33600, Pessac, France.
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210
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Ali I, Alharbi OML, Tkachev A, Galunin E, Burakov A, Grachev VA. Water treatment by new-generation graphene materials: hope for bright future. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:7315-7329. [PMID: 29359248 DOI: 10.1007/s11356-018-1315-9] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/15/2018] [Indexed: 06/07/2023]
Abstract
Water is the most important and essential component of earth's ecosystem playing a vital role in the proper functioning of flora and fauna. But, our water resources are contaminating continuously. The whole world may be in great water scarcity after few decades. Graphene, a single-atom thick carbon nanosheet, and graphene nanomaterials have bright future in water treatment technologies due to their extraordinary properties. Only few papers describe the use of these materials in water treatment by adsorption, filtration, and photodegradation methods. This article presents a critical evaluation of the contribution of graphene nanomaterials in water treatment. Attempts have been made to discuss the future perspectives of these materials in water treatment. Besides, the efforts are made to discuss the nanotoxicity and hazards of graphene-based materials. The suggestions are given to explore the full potential of these materials along with precautions of nanotoxicity and its hazards. It was concluded that the future of graphene-based materials is quite bright.
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Affiliation(s)
- Imran Ali
- Department of Chemistry, Faculty of Sciences, Taibah University, Medina Al-Munawara, 41477, Saudi Arabia.
- Department of Chemistry, Jamia Millia Islamia, New Delhi, 110025, India.
| | - Omar M L Alharbi
- Biology Department, Faculty of Sciences, Taibah University, Medina Al-Munawara, 41477, Saudi Arabia
| | - Alexey Tkachev
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106, Sovetskaya Str., Tambov, 392000, Russian Federation
| | - Evgeny Galunin
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106, Sovetskaya Str., Tambov, 392000, Russian Federation
| | - Alexander Burakov
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106, Sovetskaya Str., Tambov, 392000, Russian Federation
| | - Vladimir A Grachev
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (RAS), Leninsky Ave., 31, Moscow, 119071, Russian Federation
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211
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Choi SJ, Yu H, Jang JS, Kim MH, Kim SJ, Jeong HS, Kim ID. Nitrogen-Doped Single Graphene Fiber with Platinum Water Dissociation Catalyst for Wearable Humidity Sensor. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703934. [PMID: 29443449 DOI: 10.1002/smll.201703934] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 12/27/2017] [Indexed: 05/20/2023]
Abstract
Humidity sensors are essential components in wearable electronics for monitoring of environmental condition and physical state. In this work, a unique humidity sensing layer composed of nitrogen-doped reduced graphene oxide (nRGO) fiber on colorless polyimide film is proposed. Ultralong graphene oxide (GO) fibers are synthesized by solution assembly of large GO sheets assisted by lyotropic liquid crystal behavior. Chemical modification by nitrogen-doping is carried out under thermal annealing in H2 (4%)/N2 (96%) ambient to obtain highly conductive nRGO fiber. Very small (≈2 nm) Pt nanoparticles are tightly anchored on the surface of the nRGO fiber as water dissociation catalysts by an optical sintering process. As a result, nRGO fiber can effectively detect wide humidity levels in the range of 6.1-66.4% relative humidity (RH). Furthermore, a 1.36-fold higher sensitivity (4.51%) at 66.4% RH is achieved using a Pt functionalized nRGO fiber (i.e., Pt-nRGO fiber) compared with the sensitivity (3.53% at 66.4% RH) of pure nRGO fiber. Real-time and portable humidity sensing characteristics are successfully demonstrated toward exhaled breath using Pt-nRGO fiber integrated on a portable sensing module. The Pt-nRGO fiber with high sensitivity and wide range of humidity detection levels offers a new sensing platform for wearable humidity sensors.
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Affiliation(s)
- Seon-Jin Choi
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Hayoung Yu
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonrabuk-do, 565-905, Republic of Korea
| | - Ji-Soo Jang
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Min-Hyeok Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Sang-Joon Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Hyeon Su Jeong
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonrabuk-do, 565-905, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Advanced Nanosensor Research Center, KAIST Institute for the NanoCentury, KAIST, Daejeon, 34141, Republic of Korea
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212
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Yuan Z, Xiao X, Li J, Zhao Z, Yu D, Li Q. Self-Assembled Graphene-Based Architectures and Their Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700626. [PMID: 29619311 PMCID: PMC5827106 DOI: 10.1002/advs.201700626] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 10/03/2017] [Indexed: 05/20/2023]
Abstract
Due to unique planar structures and remarkable thermal, electronic, and mechanical properties, chemically modified graphenes (CMGs) such as graphene oxides, reduced graphene oxides, and the related derivatives are recognized as the attractive building blocks for "bottom-up" nanotechnology, while self-assembly of CMGs has emerged as one of the most promising approaches to construct advanced functional materials/systems based on graphene. By virtue of a variety of noncovalent forces like hydrogen bonding, van der Waals interaction, metal-to-ligand bonds, electrostatic attraction, hydrophobic-hydrophilic interactions, and π-π interactions, the CMGs bearing various functional groups are highly desirable for the assemblies with themselves and a variety of organic and/or inorganic species which can yield various hierarchical nanostructures and macroscopic composites endowed with unique structures, properties, and functions for widespread technological applications such as electronics, optoelectronics, electrocatalysis/photocatalysis, environment, and energy storage and conversion. In this review, significant recent advances concerning the self-assembly of CMGs are summarized, and the broad applications of self-assembled graphene-based materials as well as some future opportunities and challenges in this vibrant area are elucidated.
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Affiliation(s)
- Zhongke Yuan
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High Performance Polymer‐based Composites of Guangdong ProvinceSchool of ChemistrySun Yat‐sen UniversityGuangzhou510275China
| | - Xiaofen Xiao
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High Performance Polymer‐based Composites of Guangdong ProvinceSchool of ChemistrySun Yat‐sen UniversityGuangzhou510275China
| | - Jing Li
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High Performance Polymer‐based Composites of Guangdong ProvinceSchool of ChemistrySun Yat‐sen UniversityGuangzhou510275China
| | - Zhe Zhao
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High Performance Polymer‐based Composites of Guangdong ProvinceSchool of ChemistrySun Yat‐sen UniversityGuangzhou510275China
| | - Dingshan Yu
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High Performance Polymer‐based Composites of Guangdong ProvinceSchool of ChemistrySun Yat‐sen UniversityGuangzhou510275China
| | - Quan Li
- Liquid Crystal Institute and Chemical Physics Interdisciplinary ProgramKent State UniversityKentOH44242USA
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213
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Green synthesis of graphene oxide by seconds timescale water electrolytic oxidation. Nat Commun 2018; 9:145. [PMID: 29321501 PMCID: PMC5762692 DOI: 10.1038/s41467-017-02479-z] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 12/04/2017] [Indexed: 11/15/2022] Open
Abstract
Graphene oxide is highly desired for printing electronics, catalysis, energy storage, separation membranes, biomedicine, and composites. However, the present synthesis methods depend on the reactions of graphite with mixed strong oxidants, which suffer from explosion risk, serious environmental pollution, and long-reaction time up to hundreds of hours. Here, we report a scalable, safe and green method to synthesize graphene oxide with a high yield based on water electrolytic oxidation of graphite. The graphite lattice is fully oxidized within a few seconds in our electrochemical oxidation reaction, and the graphene oxide obtained is similar to those achieved by the present methods. We also discuss the synthesis mechanism and demonstrate continuous and controlled synthesis of graphene oxide and its use for transparent conductive films, strong papers, and ultra-light elastic aerogels. Graphene oxide is a graphene derivative showing wide applications, but it suffers from harsh synthetic conditions and long reaction time. Pei et al. show a green electrochemical method to fully oxidize the graphite lattice in a few seconds, which is over 100 times faster than existing methods.
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214
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Guo Y, Peng F, Wang H, Huang F, Meng F, Hui D, Zhou Z. Intercalation Polymerization Approach for Preparing Graphene/Polymer Composites. Polymers (Basel) 2018; 10:E61. [PMID: 30966095 PMCID: PMC6414874 DOI: 10.3390/polym10010061] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 12/28/2017] [Accepted: 01/05/2018] [Indexed: 11/16/2022] Open
Abstract
The rapid development of society has promoted increasing demand for various polymer materials. A large variety of efforts have been applied in order for graphene strengthened polymer composites to satisfy different requirements. Graphene/polymer composites synthesized by traditional strategies display some striking defects, like weak interfacial interaction and agglomeration of graphene, leading to poor improvement in performance. Furthermore, the creation of pre-prepared graphene while being necessary always involves troublesome processes. Among the various preparation strategies, an appealing approach relies on intercalation and polymerization in the interlayer of graphite and has attracted researchers' attention due to its reliable, fast and simple synthesis. In this review, we introduce an intercalation polymerization strategy to graphene/polymer composites by the intercalation of molecules/ions into graphite interlayers, as well as subsequent polymerization. The key point for regulating intercalation polymerization is tuning the structure of graphite and intercalants for better interaction. Potential applications of the resulting graphene/polymer composites, including electrical conductivity, electromagnetic absorption, mechanical properties and thermal conductivity, are also reviewed. Furthermore, the shortcomings, challenges and prospects of intercalation polymerization are discussed, which will be helpful to researchers working in related fields.
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Affiliation(s)
- Yifan Guo
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Fuxi Peng
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Huagao Wang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Fei Huang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Fanbin Meng
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - David Hui
- Department of Mechanical Engineering, University of New Orleans, New Orleans, LA 70148, USA.
| | - Zuowan Zhou
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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215
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Medidi S, Markapurapu S, Kotupalli MR, Chinnam RKR, Susarla VM, Gandham HB, Sanasi PD. Visible Light Photocatalytic Degradation of Methylene Blue and Malachite Green Dyes with CuWO4-GO Nano Composite. ACTA ACUST UNITED AC 2018. [DOI: 10.4236/mrc.2018.72002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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216
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Chen C, Xi J, Zhou E, Peng L, Chen Z, Gao C. Porous Graphene Microflowers for High-Performance Microwave Absorption. NANO-MICRO LETTERS 2018; 10:26. [PMID: 30393675 PMCID: PMC6199076 DOI: 10.1007/s40820-017-0179-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 11/28/2017] [Indexed: 05/19/2023]
Abstract
Graphene has shown great potential in microwave absorption (MA) owing to its high surface area, low density, tunable electrical conductivity and good chemical stability. To fully realize graphene's MA ability, the microstructure of graphene should be carefully addressed. Here we prepared graphene microflowers (Gmfs) with highly porous structure for high-performance MA filler material. The efficient absorption bandwidth (reflection loss ≤ -10 dB) reaches 5.59 GHz and the minimum reflection loss is up to -42.9 dB, showing significant increment compared with stacked graphene. Such performance is higher than most graphene-based materials in the literature. Besides, the low filling content (10 wt%) and low density (40-50 mg cm-3) are beneficial for the practical applications. Without compounding with magnetic materials or conductive polymers, Gmfs show outstanding MA performance with the aid of rational microstructure design. Furthermore, Gmfs exhibit advantages in facile processibility and large-scale production compared with other porous graphene materials including aerogels and foams.
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Affiliation(s)
- Chen Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Jiabin Xi
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Erzhen Zhou
- Department of Mechanical Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Li Peng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Zichen Chen
- Department of Mechanical Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China.
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China.
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217
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Oksuz M, Erbil HY. Wet-spun graphene filaments: effect of temperature of coagulation bath and type of reducing agents on mechanical & electrical properties. RSC Adv 2018; 8:17443-17452. [PMID: 35539226 PMCID: PMC9080415 DOI: 10.1039/c8ra02325e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 05/08/2018] [Indexed: 11/21/2022] Open
Abstract
Although many factors are considered to improve the properties of graphene filaments, there is no report in the existing literature on the effect of the temperature of the coagulation bath to the mechanical properties of graphene oxide filaments obtained in the wet-spinning process and also to the mechanical and electrical properties of the resulting graphene filaments after reduction. In this study, the effect of the temperature of the isopropanol coagulation bath during wet-spinning of graphene filaments on their final properties after formation was investigated and it was found that the decrease of the coagulation bath temperature resulted in more compact filaments having better mechanical properties for both graphene oxide and corresponding reduced graphene filaments. The best tensile strength and Young's modulus values were obtained in isopropanol coagulation bath which was kept at 15 °C. On the other hand, the types of the chemical reduction agents which can provide better electrical conductivity to graphene filaments after reduction were also investigated and it was determined that the use of hydriodic acid/acetic acid mixture resulted in graphene filaments having the best electrical conductivity (1.28 × 104 S m−1) and also tensile strength (234 ± 26 MPa) values. The addition of acetic acid into hydriodic acid increased the tensile strength 26% when compared with the plain HI treatment. Both electrical conductivity and tensile strength results were higher than most of the previously reported values of the wet-spun neat graphene filaments in the literature. Cold isopropanol coagulation bath and use of acetic acid/hydriodic acid reduction resulted in better tensile strength for wet-spun graphene filaments.![]()
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Affiliation(s)
- Melik Oksuz
- Department of Chemical Engineering
- Gebze Technical University
- Turkey
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218
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Tzitzios V, Dimos K, Lelidis I, Boukos NK, Wadi VS, Basina G, Nounesis G, Alhassan SM. Sulfur–oleyl amine platelet derivatives with liquid crystalline behavior. RSC Adv 2018; 8:41480-41483. [PMID: 35559320 PMCID: PMC9091870 DOI: 10.1039/c8ra08325h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 11/29/2018] [Indexed: 11/29/2022] Open
Abstract
A novel sulfur-based platelet derivative was synthesized by reacting elemental sulfur with oleyl amine. The sulfur–oleyl amine (S–OA) derivative has an ionic salt form, layered morphology and forms a highly lamellar structure. Polarized optical microscopy (POM) clearly shows the birefringent lyotropic liquid crystalline behavior of the S–OA platelets dispersions. A novel sulfur-based platelet derivative was synthesized by reacting elemental sulfur with oleyl amine.![]()
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Affiliation(s)
- Vasileios Tzitzios
- Department of Chemical Engineering
- Khalifa University of Science and Technology
- Petroleum Institute
- Abu Dhaabi
- United Arab Emirates
| | | | - Ioannis Lelidis
- Department of Physics
- National and Kapodistrian University of Athens
- 15784 Athens
- Greece
| | - Nikos K. Boukos
- Institute of Nanoscience and Nanotechnology
- NCSR Demokritos
- Athens
- Greece
| | - Vijay S. Wadi
- Department of Chemical Engineering
- Khalifa University of Science and Technology
- Petroleum Institute
- Abu Dhaabi
- United Arab Emirates
| | - Georgia Basina
- Department of Chemical Engineering
- Khalifa University of Science and Technology
- Petroleum Institute
- Abu Dhaabi
- United Arab Emirates
| | - George Nounesis
- Biomolecular Physics Laboratory
- NCSR Demokritos
- 15310 Athens
- Greece
| | - Saeed M. Alhassan
- Department of Chemical Engineering
- Khalifa University of Science and Technology
- Petroleum Institute
- Abu Dhaabi
- United Arab Emirates
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219
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Wu W, Niu D, Zhu J, Yang L, Shao Y, Fang Y, Cui Y. Fluorescent modified graphene oxide/polyaniline nanowhiskers composites as smart electrode material for supercapacitors. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2017.10.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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220
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Zhao Z, Fang R, Rong Q, Liu M. Bioinspired Nanocomposite Hydrogels with Highly Ordered Structures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703045. [PMID: 29059482 DOI: 10.1002/adma.201703045] [Citation(s) in RCA: 167] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/06/2017] [Indexed: 06/07/2023]
Abstract
In the human body, many soft tissues with hierarchically ordered composite structures, such as cartilage, skeletal muscle, the corneas, and blood vessels, exhibit highly anisotropic mechanical strength and functionality to adapt to complex environments. In artificial soft materials, hydrogels are analogous to these biological soft tissues due to their "soft and wet" properties, their biocompatibility, and their elastic performance. However, conventional hydrogel materials with unordered homogeneous structures inevitably lack high mechanical properties and anisotropic functional performances; thus, their further application is limited. Inspired by biological soft tissues with well-ordered structures, researchers have increasingly investigated highly ordered nanocomposite hydrogels as functional biological engineering soft materials with unique mechanical, optical, and biological properties. These hydrogels incorporate long-range ordered nanocomposite structures within hydrogel network matrixes. Here, the critical design criteria and the state-of-the-art fabrication strategies of nanocomposite hydrogels with highly ordered structures are systemically reviewed. Then, recent progress in applications in the fields of soft actuators, tissue engineering, and sensors is highlighted. The future development and prospective application of highly ordered nanocomposite hydrogels are also discussed.
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Affiliation(s)
- Ziguang Zhao
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Ruochen Fang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Qinfeng Rong
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Mingjie Liu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
- International Research Institute for Multidisciplinary Science, Beihang University, Beijing, 100191, P. R. China
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221
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Gao T, Yang Z, Chen C, Li Y, Fu K, Dai J, Hitz EM, Xie H, Liu B, Song J, Yang B, Hu L. Three-Dimensional Printed Thermal Regulation Textiles. ACS NANO 2017; 11:11513-11520. [PMID: 29072903 DOI: 10.1021/acsnano.7b06295] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Space cooling is a predominant part of energy consumption in people's daily life. Although cooling the whole building is an effective way to provide personal comfort in hot weather, it is energy-consuming and high-cost. Personal cooling technology, being able to provide personal thermal comfort by directing local heat to the thermally regulated environment, has been regarded as one of the most promising technologies for cooling energy and cost savings. Here, we demonstrate a personal thermal regulated textile using thermally conductive and highly aligned boron nitride (BN)/poly(vinyl alcohol) (PVA) composite (denoted as a-BN/PVA) fibers to improve the thermal transport properties of textiles for personal cooling. The a-BN/PVA composite fibers are fabricated through a fast and scalable three-dimensional (3D) printing method. Uniform dispersion and high alignment of BN nanosheets (BNNSs) can be achieved during the processing of fiber fabrication, leading to a combination of high mechanical strength (355 MPa) and favorable heat dispersion. Due to the improved thermal transport property imparted by the thermally conductive and highly aligned BNNSs, better cooling effect (55% improvement over the commercial cotton fiber) can be realized in the a-BN/PVA textile. The wearable a-BN/PVA textiles containing the 3D-printed a-BN/PVA fibers offer a promising selection for meeting the personal cooling requirement, which can significantly reduce the energy consumption and cost for cooling the whole building.
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Affiliation(s)
- Tingting Gao
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Zhi Yang
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Chaoji Chen
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Yiju Li
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Kun Fu
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Jiaqi Dai
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Emily M Hitz
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Hua Xie
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Boyang Liu
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Jianwei Song
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Bao Yang
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
| | - Liangbing Hu
- Department of Materials Science and Engineering and ‡Department of Mechanical Engineering, University of Maryland , College Park, Maryland 20742, United States
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222
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Li Z, Huang T, Gao W, Xu Z, Chang D, Zhang C, Gao C. Hydrothermally Activated Graphene Fiber Fabrics for Textile Electrodes of Supercapacitors. ACS NANO 2017; 11:11056-11065. [PMID: 29035519 DOI: 10.1021/acsnano.7b05092] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Carbon textiles are promising electrode materials for wearable energy storage devices owing to their conductive, flexible, and lightweight features. However, there still lacks a perfect choice for high-performance carbon textile electrodes with sufficient electrochemical activity. Graphene fiber fabrics (GFFs) are newly discovered carbon textiles, exhibiting various attractive properties, especially a large variability on the microstructure. Here we report the fabrication of hierarchical GFFs with significantly enlarged specific surface area using a hydrothermal activation strategy. By carefully optimize the activation process, the hydrothermally activated graphene fiber fabrics (HAGFFs) could achieve an areal capacitance of 1060 mF cm-2 in a very thin thickness (150 μm) and the capacitance is easily magnified by overlaying several layers of HAGFFs, even up to a record value of 7398 mF cm-2. Meanwhile, a good rate capability and a long cycle life are also attained. As compared with other carbon textiles, including the commercial carbon fiber cloths, our HAGFFs present much better capacitive performance. Therefore, the mechanically stable, flexible, conductive, and highly active HAGFFs have provided an option for high-performance textile electrodes.
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Affiliation(s)
- Zheng Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, China
| | - Tieqi Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, China
| | - Weiwei Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, China
| | - Dan Chang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, China
| | - Chunxiao Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, China
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223
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Yadav MD, Dasgupta K, Patwardhan AW, Joshi JB. High Performance Fibers from Carbon Nanotubes: Synthesis, Characterization, and Applications in Composites—A Review. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02269] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Manishkumar D. Yadav
- Department
of Chemical Engineering, Institute of Chemical Technology, Mumbai 400019, India
| | - Kinshuk Dasgupta
- Materials
Group, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Ashwin W. Patwardhan
- Department
of Chemical Engineering, Institute of Chemical Technology, Mumbai 400019, India
| | - Jyeshtharaj B. Joshi
- Department
of Chemical Engineering, Institute of Chemical Technology, Mumbai 400019, India
- Homi Bhabha National Institute, Mumbai 400094, India
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225
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Dierking I, Al-Zangana S. Lyotropic Liquid Crystal Phases from Anisotropic Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E305. [PMID: 28974025 PMCID: PMC5666470 DOI: 10.3390/nano7100305] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/14/2017] [Accepted: 09/14/2017] [Indexed: 01/23/2023]
Abstract
Liquid crystals are an integral part of a mature display technology, also establishing themselves in other applications, such as spatial light modulators, telecommunication technology, photonics, or sensors, just to name a few of the non-display applications. In recent years, there has been an increasing trend to add various nanomaterials to liquid crystals, which is motivated by several aspects of materials development. (i) addition of nanomaterials can change and thus tune the properties of the liquid crystal; (ii) novel functionalities can be added to the liquid crystal; and (iii) the self-organization of the liquid crystalline state can be exploited to template ordered structures or to transfer order onto dispersed nanomaterials. Much of the research effort has been concentrated on thermotropic systems, which change order as a function of temperature. Here we review the other side of the medal, the formation and properties of ordered, anisotropic fluid phases, liquid crystals, by addition of shape-anisotropic nanomaterials to isotropic liquids. Several classes of materials will be discussed, inorganic and mineral liquid crystals, viruses, nanotubes and nanorods, as well as graphene oxide.
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Affiliation(s)
- Ingo Dierking
- School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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226
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Petersen SV, Qiu L, Li D. Controlled Gelation of Graphene Towards Unprecedented Superstructures. Chemistry 2017; 23:13264-13269. [PMID: 28714171 DOI: 10.1002/chem.201703121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 11/07/2022]
Abstract
Graphene exhibits a range of exceptional physical properties and holds great promise for development of novel bulk materials for widespread applications. Properly engineering of assembled structures of graphene at multiple length scales is essential to realize its full potential in bulk forms. In this Concept article, we highlight the unique colloidal and gelation behavior of a commonly used precursor for graphene, graphene oxide (GO), and discuss how the colloidal chemistry of GO and reduced GO can enable new scalable and cost-effective approaches to construct graphene-based soft superstructures with excellent properties.
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Affiliation(s)
- Søren Vermehren Petersen
- Department of Materials Science and Engineering, Monash Centre for Atomically Thin Materials, Monash University, Clayton, VIC, 3800, Australia.,Institute of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C, Denmark
| | - Ling Qiu
- Department of Materials Science and Engineering, Monash Centre for Atomically Thin Materials, Monash University, Clayton, VIC, 3800, Australia
| | - Dan Li
- Department of Materials Science and Engineering, Monash Centre for Atomically Thin Materials, Monash University, Clayton, VIC, 3800, Australia.,Department of Chemical Engineering, University of Melbourne, Melbourne, VIC, 3010, Australia
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227
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Li M, Zhang X, Jiang H, Wang X, Ru Y, Qiao J. Preparation and application of N-doped carbon nanotube arrays on graphene fibers. NANOTECHNOLOGY 2017; 28:38LT01. [PMID: 28723679 DOI: 10.1088/1361-6528/aa80d8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new kind of carbon hybrid material with a unique structure and outstanding mechanical and functional properties is reported in this article. Nitrogen-doped carbon nanotube (CNT) arrays with inside located Ni particles are in situ grown on the surface of phenolic carbon modified graphene fibers during their conversion from graphene oxide fibers. The carbon hybrid fibers exhibit not only high tensile strength and elongation at the break, but also excellent flexibility since the CNT arrays cover all the surface of the highly strong graphene fiber. This well-constructed carbon material would be suitable for catalysts, polymer composites, hydrogen storage, oxygen reduction reaction etc.
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Affiliation(s)
- Mochen Li
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China. SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, People's Republic of China
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228
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Graphite Oxide Improves Adhesion and Water Resistance of Canola Protein-Graphite Oxide Hybrid Adhesive. Sci Rep 2017; 7:11538. [PMID: 28912443 PMCID: PMC5599558 DOI: 10.1038/s41598-017-11966-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/01/2017] [Indexed: 11/29/2022] Open
Abstract
Protein derived adhesives are extensively explored as a replacement for synthetic ones, but suffers from weak adhesion and water resistance. Graphite oxide (GO) has been extensively used in nanocomposites, but not in adhesives applications. The objectives of this study were to prepare functionally improved protein adhesive by exfoliating GO with different oxidation levels, and to determine the effect of GO on adhesion mechanism. GO were prepared by oxidizing graphite for 0.5, 2, and 4 h (GO-A, GO-B and GO-C, respectively). Increasing oxidation time decreased C/O ratio; while the relative proportion of C-OH, and C = O groups initially increased up to 2 h of oxidation, but reduced upon further oxidation. Canola protein-GO hybrid adhesive (CPA-GO) was prepared by exfoliating GO at a level of 1% (w/w). GO significantly increased (p < 0.05) adhesion; where GO-B addition showed the highest dry, and wet strength of 11.67 ± 1.00, and 4.85 ± 0.61 MPa, respectively. The improvements in adhesion was due to the improved exfoliation of GO, improved adhesive and cohesive interactions, increased hydrogen bonding, increased hydrophobic interactions and thermal stability of CPA-GO. GO, as we proposed for the first time is easier to process and cost-effective in preparing protein-based adhesives with significantly improved functionalities.
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229
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Tian Q, Xu Z, Liu Y, Fang B, Peng L, Xi J, Li Z, Gao C. Dry spinning approach to continuous graphene fibers with high toughness. NANOSCALE 2017; 9:12335-12342. [PMID: 28825752 DOI: 10.1039/c7nr03895j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Graphene fiber (GF) has emerged as a new carbonaceous fiber species since graphene-based liquid crystals were discovered. The growing performances of GFs in terms of their mechanical performance and their functionalities have assured their extensive applications in structural materials and functional textiles. To date, many spinning strategies utilizing coagulation baths have been applied in GF, which necessitates a complicated washing process. Dry spinning is a more convenient and green method for use with fibers in the chemical fiber industry, and should be a good option for GFs; however, this technique has never been used in a system of GF. In this research, first the dry spinning technique was used to fabricate continuous GFs and the dry spun GFs showed good toughness and flexibility. The dry spinnability of graphene oxide liquid crystals was achieved by choosing dispersive solvents with low surface tension and high volatility. The dry spun neat GFs possessed high toughness up to 19.12 MJ m-3, outperforming the wet spun neat GFs. This dry spinning methodology facilitates the green fabrication of fibers of graphene and graphene-beyond two-dimensional nanomaterials, and it may also be extended to other printing technologies for complex graphene architectures.
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Affiliation(s)
- Qishi Tian
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, PR China.
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230
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Fang B, Xi J, Liu Y, Guo F, Xu Z, Gao W, Guo D, Li P, Gao C. Wrinkle-stabilized metal-graphene hybrid fibers with zero temperature coefficient of resistance. NANOSCALE 2017; 9:12178-12188. [PMID: 28805869 DOI: 10.1039/c7nr04175f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The interfacial adhesion between graphene and metals is poor, as metals tend to generate superlubricity on smooth graphene surface. This problem renders the free assembly of graphene and metals to be a big challenge, and therefore, some desired conducting properties (e.g., stable metal-like conductivities in air, lightweight yet flexible conductors, and ultralow temperature coefficient of resistance, TCR) likely being realized by integrating the merits of graphene and metals remains at a theoretical level. This work proposes a wrinkle-stabilized approach to address the poor adhesion between graphene surface and metals. Cyclic voltammetry (CV) tests and theoretical analysis by Scharifker-Hills models demonstrate that multiscale wrinkles effectively induce nucleation of metal particles, locking in metal nuclei and guiding the continuous growth of metal islands in an instantaneous model on rough graphene surface. The universality and practicability of the wrinkle-stabilized approach is verified by our investigation through the electrodeposition of nine kinds of metals on graphene fibers (GF). The strong interface bonding permits metal-graphene hybrid fibers to show metal-level conductivities (up to 2.2 × 107 S m-1, a record high value for GF in air), reliable weatherability and favorable flexibility. Due to the negative TCR of graphene and positive TCR of metals, the TCR of Cu- and Au-coated GFs reaches zero at a wide temperature range (15 K-300 K). For this layered model, the quantitative analysis by classical theories demonstrates the suitable thickness ratio of graphene layer and metal layer to achieve zero TCR to be 0.2, agreeing well with our experimental results. This wrinkle-stabilized approach and our theoretical analysis of zero-TCR behavior of the graphene-metal system are conducive to the design of high-performance conducting materials based on graphene and metals.
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Affiliation(s)
- Bo Fang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, P. R. China.
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231
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Xiao Y, Xu Z, Liu Y, Peng L, Xi J, Fang B, Guo F, Li P, Gao C. Sheet Collapsing Approach for Rubber-like Graphene Papers. ACS NANO 2017; 11:8092-8102. [PMID: 28777531 DOI: 10.1021/acsnano.7b02915] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Understanding and modulating the conformation of graphene are pivotal in designing graphene macroscopic materials. Here, we revealed the sheet collapsing behavior of graphene oxide (GO) sheets by poor solvents in an analogy with linear macromolecules. Triggered by poor solvents, extended GO sheets in good solvents can collapse to hierarchically wrinkled conformations. The collapsing behavior of GO enabled the fabrication of amorphous self-standing GO and graphene papers with rich hierarchical wrinkles and folds over mutliple size scales. The collapsed GO and graphene papers had a rubber-like mechanical behavior with viscoelasticity. By our collapsing method, GO and graphene self-standing papers were designed to be stiff with high modulus or to become soft with low modulus of 100 MPa at a remarkably large breakage elongation up to 23%. Our philosophy of treating graphene as a 2D polymer enables the efficient control of molecular conformations of graphene and other 2D polymers and the design of macroscopic materials of 2D nanomaterials as in the polymer industry.
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Affiliation(s)
- Youhua Xiao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Li Peng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Jiabin Xi
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Bo Fang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Fan Guo
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Peng Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
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232
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Yun YJ, Ah CS, Hong WG, Kim HJ, Shin JH, Jun Y. Highly conductive and environmentally stable gold/graphene yarns for flexible and wearable electronics. NANOSCALE 2017; 9:11439-11445. [PMID: 28786455 DOI: 10.1039/c7nr04384h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Here, we fabricated high-performance gold/graphene yarns through a facile method by the electroless deposition of gold nanoparticles onto the surface of graphene yarns. The gold/graphene yarns are fabricated using a completely solution-based process that can be scaled up for practical applications. They possess high electrical conductivity (2.86 × 102 S cm-1) and good gravimetric specific conductivity (6.81 × 102 S cm2 g-1) as well as good reliability under 1000 bending tests with a maximum bending angle of 170° and 10 washing tests with laundry detergents. These stable conducting yarns could also be integrated into textiles and clothes in various forms to create smart fabrics and wearable devices. In addition, this facile approach is easily applicable to various graphene films and devices on soft substrates that are presently used in flexible/wearable electronics.
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Affiliation(s)
- Yong Ju Yun
- Department of Energy Engineering, Konkuk University, Seoul, 05029, Republic of Korea.
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233
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Xiang X, Yang Z, Di J, Zhang W, Li R, Kang L, Zhang Y, Zhang H, Li Q. In situ twisting for stabilizing and toughening conductive graphene yarns. NANOSCALE 2017; 9:11523-11529. [PMID: 28767114 DOI: 10.1039/c7nr03305b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Graphene fibres are of great interest for diverse applications such as their use in supercapacitors, batteries, stimulus-responsive actuators and smart textiles. However, previously reported graphene-based fibres commonly have very low toughness and poor stretchability, which can limit many of their possible applications. We demonstrate an efficient approach for preparing super-tough yarns of reduced graphene oxides via the in situ twisting of multiplied graphene oxide fibres during fibre extrusion and coagulation, followed by chemical reduction and drying. These twisted multiplied yarns have a toughness of 46.3 J m-3, much higher than previous results for graphene-based fibres and films, and benefit from the retention of high strength and a significant increase in the failure strain due to the stably twisted hollow structure of the yarns. These yarns also show very stable electrical resistance when subjected to cyclic stretching at a large tensile strain. We demonstrate the utilization of such yarns for stretchable conducting electronic wires.
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Affiliation(s)
- Xi Xiang
- Key Lab of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences, Suzhou 215123, China.
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234
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Kou L, Liu Y, Zhang C, Shao L, Tian Z, Deng Z, Gao C. A Mini Review on Nanocarbon-Based 1D Macroscopic Fibers: Assembly Strategies and Mechanical Properties. NANO-MICRO LETTERS 2017; 9:51. [PMID: 30393746 PMCID: PMC6199052 DOI: 10.1007/s40820-017-0151-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 07/11/2017] [Indexed: 05/29/2023]
Abstract
Nanocarbon-based materials, such as carbon nanotubes (CNTs) and graphene have been attached much attention by scientific and industrial community. As two representative nanocarbon materials, one-dimensional CNTs and two-dimensional graphene both possess remarkable mechanical properties. In the past years, a large amount of work have been done by using CNTs or graphene as building blocks for constructing novel, macroscopic, mechanically strong fibrous materials. In this review, we summarize the assembly approaches of CNT-based fibers and graphene-based fibers in chronological order, respectively. The mechanical performances of these fibrous materials are compared, and the critical influences on the mechanical properties are discussed. Personal perspectives on the fabrication methods of CNT- and graphene-based fibers are further presented.
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Affiliation(s)
- Liang Kou
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, 2 Jinye Road 1, Xi’an, 710070 People’s Republic of China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027 People’s Republic of China
| | - Cheng Zhang
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, 2 Jinye Road 1, Xi’an, 710070 People’s Republic of China
| | - Le Shao
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, 2 Jinye Road 1, Xi’an, 710070 People’s Republic of China
| | - Zhanyuan Tian
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, 2 Jinye Road 1, Xi’an, 710070 People’s Republic of China
| | - Zengshe Deng
- Shaanxi Coal and Chemical Technology Institute Co., Ltd, 2 Jinye Road 1, Xi’an, 710070 People’s Republic of China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027 People’s Republic of China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620 People’s Republic of China
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235
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He N, Pan Q, Liu Y, Gao W. Graphene-Fiber-Based Supercapacitors Favor N-Methyl-2-pyrrolidone/Ethyl Acetate as the Spinning Solvent/Coagulant Combination. ACS APPLIED MATERIALS & INTERFACES 2017; 9:24568-24576. [PMID: 28661648 DOI: 10.1021/acsami.7b05982] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
One-dimensional flexible fiber supercapacitors (FSCs) have attracted great interest as promising energy-storage units that can be seamlessly incorporated into textiles via weaving, knitting, or braiding. The major challenges in this field are to develop tougher and more efficient FSCs with a relatively easy and scalable process. Here, we demonstrate a wet-spinning process to produce graphene oxide (GO) fibers from GO dispersions in N-methyl-2-pyrrolidone (NMP), with ethyl acetate as the coagulant. Upon chemical reduction of GO, the resulting NMP-based reduced GO (rGO) fibers (rGO@NMP-Fs) are twice as high in the surface area and toughness but comparable in tensile strength and conductivity as that of the water-based rGO fibers (rGO@H2O-Fs). When assembled into parallel FSCs, rGO@NMP-F-based supercapacitors (rGO@NMP-FSCs) offered a specific capacitance of 196.7 F cm-3 (147.5 mF cm-2), five times higher than that of rGO@H2O-F-based supercapacitors (rGO@H2O-FSCs) and also higher than most existing wet-spun rGO-FSCs, as well as those FSCs built with metal wires, graphene/carbon nanotube (CNT) fibers, or even pseudocapacitive materials. In addition, our rGO@NMP-FSCs can provide good bending and cycling stability. The energy density of our rGO@NMP-FSCs reaches ca. 6.8 mWh cm-3, comparable to that of a Li thin-film battery (4 V/500 μAh).
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Affiliation(s)
- Nanfei He
- Department of Textile Engineering, Chemistry and Science, North Carolina State University , Raleigh, North Carolina 27606, United States
| | - Qin Pan
- Department of Textile Engineering, Chemistry and Science, North Carolina State University , Raleigh, North Carolina 27606, United States
| | - Yixin Liu
- Department of Textile Engineering, Chemistry and Science, North Carolina State University , Raleigh, North Carolina 27606, United States
| | - Wei Gao
- Department of Textile Engineering, Chemistry and Science, North Carolina State University , Raleigh, North Carolina 27606, United States
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236
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Gao E, Cao Y, Liu Y, Xu Z. Optimizing Interfacial Cross-Linking in Graphene-Derived Materials, Which Balances Intralayer and Interlayer Load Transfer. ACS APPLIED MATERIALS & INTERFACES 2017; 9:24830-24839. [PMID: 28677388 DOI: 10.1021/acsami.7b04411] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Graphene-derived layer-by-layer (LbL) assemblies in the form of films or fibers have recently attracted particular interests owing to their low cost, facile fabrication, and outstanding mechanical properties, which could be further tuned by surface functionalization that cross-links graphene sheets in the assembly. However, this interfacial engineering approach has not yet been finely utilized considering the dual roles of cross-links in modifying the intrinsic properties of graphene sheets and their interlayer interactions. In this work, combining first-principles calculations and continuum-mechanics-based model analysis, we find that the functionalization weakens the intrinsic mechanical resistance of graphene, whereas it enhances interlayer load transfer through interlayer cross-linking. There are optimum cross-linking densities or concentrations of the surface functional groups that maximize the overall tensile stiffness, tensile strength and strain to failure of graphene-derived LbL assemblies, arising from the competition between intralayer and interlayer load-bearing mechanisms, as defined by the type of functionalization and size of graphene sheets. Our work quantifies the ultimate mechanical performance of graphene-derived LbL assemblies, on the condition that their microstructures and functionalization could be adequately controlled in the fabrication process.
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Affiliation(s)
- Enlai Gao
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University , Beijing 100084, China
| | - Yu Cao
- College of Chemistry, Nankai University , Tianjin 300071, China
| | - Yilun Liu
- State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Zhiping Xu
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University , Beijing 100084, China
- Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, China
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237
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Hu C, Li J, Liu D, Song R, Gu J, Prempeh N, Li H. Effects of the coagulation temperature on the properties of wet-spun poly(vinyl alcohol)-graphene oxide fibers. J Appl Polym Sci 2017. [DOI: 10.1002/app.45463] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chengming Hu
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Department of Chemistry; Nanjing University of Information Science and Technology; Nanjing 210044 China
| | - Jinlei Li
- Department of Chemical Engineering; McMaster University; Hamilton Ontario L8S4L7 Canada
| | - Dagang Liu
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Department of Chemistry; Nanjing University of Information Science and Technology; Nanjing 210044 China
| | - Renjie Song
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Department of Chemistry; Nanjing University of Information Science and Technology; Nanjing 210044 China
| | - Jiefan Gu
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Department of Chemistry; Nanjing University of Information Science and Technology; Nanjing 210044 China
| | - Nana Prempeh
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Department of Chemistry; Nanjing University of Information Science and Technology; Nanjing 210044 China
| | - Huiyan Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Department of Chemistry; Nanjing University of Information Science and Technology; Nanjing 210044 China
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238
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Shang JJ, Yang QS, Liu X. New Coarse-Grained Model and Its Implementation in Simulations of Graphene Assemblies. J Chem Theory Comput 2017; 13:3706-3714. [DOI: 10.1021/acs.jctc.7b00051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jun-Jun Shang
- Department of Engineering
Mechanics, Beijing University of Technology, Beijing 100124, China
| | - Qing-Sheng Yang
- Department of Engineering
Mechanics, Beijing University of Technology, Beijing 100124, China
| | - Xia Liu
- Department of Engineering
Mechanics, Beijing University of Technology, Beijing 100124, China
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239
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Zhao Y, Liu J, Wang B, Sha J, Li Y, Zheng D, Amjadipour M, MacLeod J, Motta N. Supercapacitor Electrodes with Remarkable Specific Capacitance Converted from Hybrid Graphene Oxide/NaCl/Urea Films. ACS APPLIED MATERIALS & INTERFACES 2017; 9:22588-22596. [PMID: 28609091 DOI: 10.1021/acsami.7b05965] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel approach to improve the specific capacitance of reduced graphene oxide (rGO) films is reported. We combine the aqueous dispersion of liquid-crystalline GO incorporating salt and urea with a blade-coating technique to make hybrid films. After drying, stacked GO sheets mediated by solidified NaCl and urea are hydrothermally reduced, resulting in a nanoporous film consisting of rumpled N-doped rGO sheets. As a supercapacitor electrode, the film exhibits a high gravimetric specific capacitance of 425 F g-1 and a record volumetric specific capacitance of 693 F cm-3 at 1 A g-1 in 1 M H2SO4 aqueous electrolyte when integrated into a symmetric cell. When using Li2SO4 aqueous electrolyte, which can extend the potential window to 1.6 V, the device exhibits high energy densities up to 35 Wh kg-1, and high power densities up to 104 W kg-1. This novel strategy to intercalate solidified chemicals into stacked GO sheets to functionalize them and prevent them from restacking provides a promising route toward supercapacitors with high specific capacitance and energy density.
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Affiliation(s)
- Yi Zhao
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Jinzhang Liu
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Bin Wang
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Jiangbo Sha
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Yan Li
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Dezhi Zheng
- School of Instrumentation Science and Optoelectronics Engineering, Beihang University , Beijing 100191, China
| | - Mojtaba Amjadipour
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology , Brisbane 4001, QLD, Australia
| | - Jennifer MacLeod
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology , Brisbane 4001, QLD, Australia
| | - Nunzio Motta
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology , Brisbane 4001, QLD, Australia
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Hoshide T, Zheng Y, Hou J, Wang Z, Li Q, Zhao Z, Ma R, Sasaki T, Geng F. Flexible Lithium-Ion Fiber Battery by the Regular Stacking of Two-Dimensional Titanium Oxide Nanosheets Hybridized with Reduced Graphene Oxide. NANO LETTERS 2017; 17:3543-3549. [PMID: 28535338 DOI: 10.1021/acs.nanolett.7b00623] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Increasing interest has recently been devoted to developing small, rapid, and portable electronic devices; thus, it is becoming critically important to provide matching light and flexible energy-storage systems to power them. To this end, compared with the inevitable drawbacks of being bulky, heavy, and rigid for traditional planar sandwiched structures, linear fiber-shaped lithium-ion batteries (LIB) have become increasingly important owing to their combined superiorities of miniaturization, adaptability, and weavability, the progress of which being heavily dependent on the development of new fiber-shaped electrodes. Here, we report a novel fiber battery electrode based on the most widely used LIB material, titanium oxide, which is processed into two-dimensional nanosheets and assembled into a macroscopic fiber by a scalable wet-spinning process. The titania sheets are regularly stacked and conformally hybridized in situ with reduced graphene oxide (rGO), thereby serving as efficient current collectors, which endows the novel fiber electrode with excellent integrated mechanical properties combined with superior battery performances in terms of linear densities, rate capabilities, and cyclic behaviors. The present study clearly demonstrates a new material-design paradigm toward novel fiber electrodes by assembling metal oxide nanosheets into an ordered macroscopic structure, which would represent the most-promising solution to advanced flexible energy-storage systems.
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Affiliation(s)
- Tatsumasa Hoshide
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yuanchuan Zheng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Junyu Hou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Zhiqiang Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Qingwen Li
- Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Sciences , 398 Ruoshui Road, Suzhou Industry Park, Suzhou 215123, China
| | - Zhigang Zhao
- Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Sciences , 398 Ruoshui Road, Suzhou Industry Park, Suzhou 215123, China
| | - Renzhi Ma
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takayoshi Sasaki
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Fengxia Geng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
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241
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Nakato T, Nono Y, Mouri E. Textural diversity of hierarchical macroscopic structures of colloidal liquid crystalline nanosheets organized under electric fields. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.02.092] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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242
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Pan H, Ma J, Tao J, Zhu S. Hierarchical architecture for flexible energy storage. NANOSCALE 2017; 9:6686-6694. [PMID: 28485445 DOI: 10.1039/c7nr00867h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The introduction of hierarchy and chirality into structure is of great interest, and can result in new optical and electronic properties due to the synergistic effect of helical and anisotropic structures. Herein, we demonstrate a simple and straightforward route toward the fabrication of hierarchical chiral materials based on the assembly of two-dimensional graphene oxide nanosheets (GO) and one-dimensional cellulose nanocrystals (CNCs). The unique layered structure of CNC/GO could be preserved in the solid state, allowing electrode active SnO2 to be loaded for potential applications in energy storage. The resultant SnO2/CNC/reduced GO (SnO2/CNC/rGO) composite could be processed into film, fiber, and textile with an extremely high tensile strength of 100 MPa. The free-standing SnO2/CNC/rGO electrodes exhibit highly improved energy storage performance, with a reversible capacity of ∼500 mA h g-1 maintained for 1500 cycles in the film and ∼800 mA h g-1 maintained for 150 cycles in the textile at a current density of 500 mA g-1. This is attributed to the prepared hierarchical chiral structures. The presented technique provides an effective approach to producing hierarchical functional materials from nanoparticles as building blocks, which might open an avenue for the creation of new flexible energy storage devices.
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Affiliation(s)
- H Pan
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, P.R. China.
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243
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Fiber electrode by one-pot wet-spinning of graphene and manganese oxide nanowires for wearable lithium-ion batteries. J APPL ELECTROCHEM 2017. [DOI: 10.1007/s10800-017-1085-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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244
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Liu Y, Liang H, Xu Z, Xi J, Chen G, Gao W, Xue M, Gao C. Superconducting Continuous Graphene Fibers via Calcium Intercalation. ACS NANO 2017; 11:4301-4306. [PMID: 28353342 DOI: 10.1021/acsnano.7b01491] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Superconductors are important materials in the field of low-temperature magnet applications and long-distance electrical power transmission systems. Besides metal-based superconducting materials, carbon-based superconductors have attracted considerable attention in recent years. Up to now, five allotropes of carbon, including diamond, graphite, C60, CNTs, and graphene, have been reported to show superconducting behavior. However, most of the carbon-based superconductors are limited to small size and discontinuous phases, which inevitably hinders further application in macroscopic form. Therefore, it raises a question of whether continuously carbon-based superconducting wires could be accessed, which is of vital importance from viewpoints of fundamental research and practical application. Here, inspired by superconducting graphene, we successfully fabricated flexible graphene-based superconducting fibers via a well-established calcium (Ca) intercalation strategy. The resultant Ca-intercalated graphene fiber (Ca-GF) shows a superconducting transition at ∼11 K, which is almost 2 orders of magnitude higher than that of early reported alkali metal intercalated graphite and comparable to that of commercial superconducting NbTi wire. The combination of lightness and easy scalability makes Ca-GF highly promising as a lightweight superconducting wire.
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Affiliation(s)
- Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Hui Liang
- Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Jiabin Xi
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Genfu Chen
- Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Weiwei Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
| | - Mianqi Xue
- Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China
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Liu Y, Xu Z, Gao W, Cheng Z, Gao C. Graphene and Other 2D Colloids: Liquid Crystals and Macroscopic Fibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606794. [PMID: 28233348 DOI: 10.1002/adma.201606794] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 01/19/2017] [Indexed: 06/06/2023]
Abstract
Two-dimensional colloidal nanomaterials are running into renaissance after the enlightening researches of graphene. Macroscopic one-dimensional fiber is an optimal ordered structural form to express the in-plane merits of 2D nanomaterials, and the formation of liquid crystals (LCs) allows the creation of continuous fibers. In the correlated system from LCs to fibers, understanding their macroscopic organizing behavior and transforming them into new solid fibers is greatly significant for applications. Herein, we retrospect the history of 2D colloids and discuss about the concept of 2D nanomaterial fibers in the context of LCs, elaborating the motivation, principle and possible strategies of fabrication. Then we highlight the creation, development and typical applications of graphene fibers. Additionally, the latest advances of other 2D nanomaterial fibers are also summarized. Finally, conclusions, challenges and perspectives are provided to show great expectations of better and more fibrous materials of 2D nanomaterials. This review gives a comprehensive retrospect of the past century-long effort about the whole development of 2D colloids, and plots a clear roadmap - "lamellar solid - LCs - macroscopic fibers - flexible devices", which will certainly open a new era of structural-multifunctional application for the conventional 2D colloids.
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Affiliation(s)
- Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Zhen Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Weiwei Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
| | - Zhengdong Cheng
- Arti McFerrin Department of Chemical Engineering and Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China
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246
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Liu M, Huo Z, Liu T, Shen Y, He R, Zhou C. Self-Assembling Halloysite Nanotubes into Concentric Ring Patterns in a Sphere-on-Flat Geometry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3088-3098. [PMID: 28025883 DOI: 10.1021/acs.langmuir.6b04460] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Highly ordered and concentric ring patterns consisting of halloysite nanotubes (HNTs) with hierarchical cholesteric architectures are prepared by evaporation-induced self-assembly in a sphere-on-flat geometry. The structure and properties of HNTs are investigated. HNTs show a perfect tubular morphology on the nanoscale with high dispersion stability in water. Upon drying the HNTs aqueous suspension in a sphere-on-flat confined space, regular concentric HNTs rings are formed on the substrate via a self-assembly process. The widths of the inner and outer rings and the spacing between the adjacent rings increase with an increase in the concentration of the HNTs suspension. The highly ordered and concentric HNTs rings show a pronounced Maltese cross-like pattern under crossed polarizers, which suggests the formation of hierarchical cholesteric architectures. Scanning electron microscopy and atomic force microscopy observations show a disclination alignment of HNTs in the ring strips, especially with a high concentration of the HNTs suspension. The patterned rough surfaces of the HNTs show low cytotoxicity and can be used as a cell-supporting scaffold. The HNTs rings can guide the growth and orientation of C2C12 myoblast cells perpendicular to the rings. This work provides a simple, repeatable, mild, and high-efficiency method for obtaining HNTs with hierarchical architectures, which show potential for a large variety of applications, for example, in vascular grafts and skin regeneration.
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Affiliation(s)
- Mingxian Liu
- Department of Materials Science and Engineering, Jinan University , Guangzhou 510632, PR China
| | - Zhuohao Huo
- Department of Materials Science and Engineering, Jinan University , Guangzhou 510632, PR China
| | - Tengfei Liu
- Department of Materials Science and Engineering, Jinan University , Guangzhou 510632, PR China
| | - Yan Shen
- Department of Materials Science and Engineering, Jinan University , Guangzhou 510632, PR China
| | - Rui He
- Department of Materials Science and Engineering, Jinan University , Guangzhou 510632, PR China
| | - Changren Zhou
- Department of Materials Science and Engineering, Jinan University , Guangzhou 510632, PR China
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247
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Fei L, Yoo SH, Villamayor RAR, Williams BP, Gong SY, Park S, Shin K, Joo YL. Graphene Oxide Involved Air-Controlled Electrospray for Uniform, Fast, Instantly Dry, and Binder-Free Electrode Fabrication. ACS APPLIED MATERIALS & INTERFACES 2017; 9:9738-9746. [PMID: 28240548 DOI: 10.1021/acsami.7b00087] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report a facile air-controlled electrospray method to directly deposit binder-free active materials/graphene oxide (GO) onto current collectors. This method is inspired from an electrospinning process, and possesses all the advantages that electrospinning has such as low cost, easy scaling up, and simultaneous solvent evaporation during the spraying process. Moreover, the spray slurry is only a simple mixture of active materials and GO suspension in water, no binder polymer, organic solvent, and conductive carbon required. In our research, high-capacity Si nanoparticles (Si NP, 70-100 nm) and SiO microparticles (SiO MP, 3-10 μm) were selected to demonstrate the capability of this method to accommodate particles with different sizes. Their mixture with GO was sprayed onto a collector and then thermally annealed in an inert gas to obtain Si NP or SiO MP/reduced graphene oxide (RGO) binder-free electrodes. We are also able to directly deposit fairly large electrode sheets (e.g., 12 × 21 in.) upon the application requirement. To the best of our knowledge, this is the simplest approach to produce Si-related materials/RGO layered structures directly on current collector with controllable area and loading. Si and SiO MP/RGO are evaluated in both half and full lithium cells, showing good electrochemical performance. Prelithiation is also studied and gives a high first cycle Coulombic efficiency. In addition to Si-related materials, other materials with different shapes and sizes (e.g., MoO3 nanobelts, Sn/carbon nanofibers, and commercial sulfur particles) can also be sprayed. Beyond the preparation of battery electrodes, this approach can also be applied for other types of electrode preparation such as that of a supercapacitor, fuel cell, and solar cell.
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Affiliation(s)
- Ling Fei
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University , Ithaca, New York 14853, United States
| | - Sang Ha Yoo
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University , Ithaca, New York 14853, United States
| | - Rachel Ann R Villamayor
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University , Ithaca, New York 14853, United States
| | - Brian P Williams
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University , Ithaca, New York 14853, United States
| | - Seon Young Gong
- Advanced Institute of Research, Dongjin Semichem Co., Ltd. , 35 Sampyeong-dong, Silicon Park, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, Korea
| | - Sunchan Park
- Advanced Institute of Research, Dongjin Semichem Co., Ltd. , 35 Sampyeong-dong, Silicon Park, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, Korea
| | - Kyusoon Shin
- Advanced Institute of Research, Dongjin Semichem Co., Ltd. , 35 Sampyeong-dong, Silicon Park, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, Korea
| | - Yong Lak Joo
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University , Ithaca, New York 14853, United States
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248
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Tan C, Cao X, Wu XJ, He Q, Yang J, Zhang X, Chen J, Zhao W, Han S, Nam GH, Sindoro M, Zhang H. Recent Advances in Ultrathin Two-Dimensional Nanomaterials. Chem Rev 2017; 117:6225-6331. [PMID: 28306244 DOI: 10.1021/acs.chemrev.6b00558] [Citation(s) in RCA: 1969] [Impact Index Per Article: 281.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Since the discovery of mechanically exfoliated graphene in 2004, research on ultrathin two-dimensional (2D) nanomaterials has grown exponentially in the fields of condensed matter physics, material science, chemistry, and nanotechnology. Highlighting their compelling physical, chemical, electronic, and optical properties, as well as their various potential applications, in this Review, we summarize the state-of-art progress on the ultrathin 2D nanomaterials with a particular emphasis on their recent advances. First, we introduce the unique advances on ultrathin 2D nanomaterials, followed by the description of their composition and crystal structures. The assortments of their synthetic methods are then summarized, including insights on their advantages and limitations, alongside some recommendations on suitable characterization techniques. We also discuss in detail the utilization of these ultrathin 2D nanomaterials for wide ranges of potential applications among the electronics/optoelectronics, electrocatalysis, batteries, supercapacitors, solar cells, photocatalysis, and sensing platforms. Finally, the challenges and outlooks in this promising field are featured on the basis of its current development.
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Affiliation(s)
- Chaoliang Tan
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Xiehong Cao
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore.,College of Materials Science and Engineering, Zhejiang University of Technology , 18 Chaowang Road, Hangzhou 310014, China
| | - Xue-Jun Wu
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Qiyuan He
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jian Yang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Xiao Zhang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Junze Chen
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Wei Zhao
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Shikui Han
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Gwang-Hyeon Nam
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Melinda Sindoro
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Hua Zhang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore
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249
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Olowojoba GB, Kopsidas S, Eslava S, Gutierrez ES, Kinloch AJ, Mattevi C, Rocha VG, Taylor AC. A facile way to produce epoxy nanocomposites having excellent thermal conductivity with low contents of reduced graphene oxide. JOURNAL OF MATERIALS SCIENCE 2017; 52:7323-7344. [PMID: 32226133 PMCID: PMC7089639 DOI: 10.1007/s10853-017-0969-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/02/2017] [Indexed: 06/10/2023]
Abstract
A well-dispersed phase of exfoliated graphene oxide (GO) nanosheets was initially prepared in water. This was concentrated by centrifugation and was mixed with a liquid epoxy resin. The remaining water was removed by evaporation, leaving a GO dispersion in epoxy resin. A stoichiometric amount of an anhydride curing agent was added to this epoxy-resin mixture containing the GO nanosheets, which was then cured at 90 °C for 1 h followed by 160 °C for 2 h. A second thermal treatment step of 200 °C for 30 min was then undertaken to reduce further the GO in situ in the epoxy nanocomposite. An examination of the morphology of such nanocomposites containing reduced graphene oxide (rGO) revealed that a very good dispersion of rGO was achieved throughout the epoxy polymer. Various thermal and mechanical properties of the epoxy nanocomposites were measured, and the most noteworthy finding was a remarkable increase in the thermal conductivity when relatively very low contents of rGO were present. For example, a value of 0.25 W/mK was measured at 30 °C for the nanocomposite with merely 0.06 weight percentage (wt%) of rGO present, which represents an increase of ~40% compared with that of the unmodified epoxy polymer. This value represents one of the largest increases in the thermal conductivity per wt% of added rGO yet reported. These observations have been attributed to the excellent dispersion of rGO achieved in these nanocomposites made via this facile production method. The present results show that it is now possible to tune the properties of an epoxy polymer with a simple and viable method of GO addition.
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Affiliation(s)
- Ganiu B. Olowojoba
- Mechanics of Materials Division, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ UK
| | - Sotirios Kopsidas
- Mechanics of Materials Division, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ UK
| | - Salvador Eslava
- Centre for Advanced Structural Ceramics, Department of Materials, Imperial College London, London, SW7 2AZ UK
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY UK
| | - Eduardo S. Gutierrez
- Centre for Advanced Structural Ceramics, Department of Materials, Imperial College London, London, SW7 2AZ UK
| | - Anthony J. Kinloch
- Mechanics of Materials Division, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ UK
| | - Cecilia Mattevi
- Centre for Advanced Structural Ceramics, Department of Materials, Imperial College London, London, SW7 2AZ UK
| | - Victoria G. Rocha
- Centre for Advanced Structural Ceramics, Department of Materials, Imperial College London, London, SW7 2AZ UK
- School of Engineering, Cardiff University, Cardiff, CF24 3AA UK
| | - Ambrose C. Taylor
- Mechanics of Materials Division, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ UK
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Bai X, Liao S, Huang Y, Song J, Liu Z, Fang M, Xu C, Cui Y, Wu H. Continuous Draw Spinning of Extra-Long Silver Submicron Fibers with Micrometer Patterning Capability. NANO LETTERS 2017; 17:1883-1891. [PMID: 28165744 DOI: 10.1021/acs.nanolett.6b05205] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ultrathin metal fibers can serve as highly conducting and flexible current and heat transport channels, which are essential for numerous applications ranging from flexible electronics to energy conversion. Although industrial production of metal fibers with diameters of down to 2 μm is feasible, continuous production of high-quality and low-cost nanoscale metal wires is still challenging. Herein, we report the continuous draw spinning of highly conductive silver submicron fibers with the minimum diameter of ∼200 nm and length of more than kilometers. We obtained individual AgNO3/polymer fibers by continuous drawing from an aqueous solution at a speed of up to 8 m/s. With subsequent heat treatment, freestanding Ag submicron fibers with high mechanical flexibility and electric conductivity have been obtained. Woven mats of aligned Ag submicron fibers were used as transparent electrodes with high flexibility and high performance with sheet resistance of 7 Ω sq-1 at a transparency of 96%. Continuous draw spinning opened new avenues for scalable, flexible, and ultralow-cost fabrication of extra-long conductive ultrathin metal fibers.
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Affiliation(s)
- Xiaopeng Bai
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Suiyang Liao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Ya Huang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Jianan Song
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Zhenglian Liu
- School of Materials Science and Technology, China University of Geosciences , Beijing, 100083 China
| | - Minghao Fang
- School of Materials Science and Technology, China University of Geosciences , Beijing, 100083 China
| | - Chencheng Xu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Yi Cui
- Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States
| | - Hui Wu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
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