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Bunno A, Shigemitsu H, Yoshikawa A, Osakada Y, Fujitsuka M, Ishiwari F, Saeki A, Ohkubo K, Mori T, Kida T. Supramolecular nanosheet formation-induced photosensitisation mechanism change of Rose Bengal dye in aqueous media. Chem Commun (Camb) 2024; 60:889-892. [PMID: 38165640 DOI: 10.1039/d3cc05731c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Development of two-dimensional materials and exploration of their functionalities are significant challenges due to their potential. In this study, we successfully fabricated a supramolecular nanosheet composed of amphiphilic Rose Bengal dyes in an aqueous medium. Furthermore, we elucidated a distinct change in the photosensitisation mechanism induced by nanosheet formation.
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Affiliation(s)
- Asuka Bunno
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Hajime Shigemitsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Center for Future Innovation (CFi), Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - Aya Yoshikawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Yasuko Osakada
- Institute for Advanced Co-creation Studies, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Center for Future Innovation (CFi), Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kei Ohkubo
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
- Institute for Advanced Co-creation Studies, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Toshiyuki Kida
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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2
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Saji VS. 2D hexagonal boron nitride (h-BN) nanosheets in protective coatings: A literature review. Heliyon 2023; 9:e19362. [PMID: 37681159 PMCID: PMC10481311 DOI: 10.1016/j.heliyon.2023.e19362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/18/2023] [Accepted: 08/20/2023] [Indexed: 09/09/2023] Open
Abstract
The layered 2D hexagonal boron nitride (h-BN) nanosheets (BNNSs) have received significant attention as effective fillers for composite protective coatings in anti-corrosion, anti-oxidation and anti-wear applications. Vapour deposited h-BN mono/multilayers are related classes well-recognized as protective thin films and coatings. This review comprehensively accounts for the research and development of BNNSs in protective coatings. Chemical vapour deposited (CVD) BN thin films and exfoliated BNNSs-incorporated composite polymer coatings are primarily discussed. Inorganic and nanocarbon-based composite coatings are also covered. Future research potentials are presented.
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Affiliation(s)
- Viswanathan S. Saji
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum & Minerals, Dhahran - 31261, Saudi Arabia
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3
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Impedance spectroscopy data for 2D biintercalate clathrate InSe<<NaNO2>+<FeCl3>>. APPLIED NANOSCIENCE 2023. [DOI: 10.1007/s13204-023-02804-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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4
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Layer-by-layer nanohybrids of Ni-Cr-LDH intercalated with 0D polyoxotungstate for highly efficient hybrid supercapacitor. J Colloid Interface Sci 2022; 616:548-559. [DOI: 10.1016/j.jcis.2022.02.091] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 02/12/2022] [Accepted: 02/19/2022] [Indexed: 11/19/2022]
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5
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6
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Jin X, Lee T, Tamakloe W, Patil SB, Soon A, Kang Y, Hwang S. In Situ Defect Engineering Route to Optimize the Cationic Redox Activity of Layered Double Hydroxide Nanosheet via Strong Electronic Coupling with Holey Substrate. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103368. [PMID: 34713617 PMCID: PMC8728845 DOI: 10.1002/advs.202103368] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/15/2021] [Indexed: 06/13/2023]
Abstract
A defect engineering of inorganic solids garners great deal of research activities because of its high efficacy to optimize diverse energy-related functionalities of nanostructured materials. In this study, a novel in situ defect engineering route to maximize electrocatalytic redox activity of inorganic nanosheet is developed by using holey nanostructured substrate with strong interfacial electronic coupling. Density functional theory calculations and in situ spectroscopic analyses confirm that efficient interfacial charge transfer takes place between holey TiN and Ni-Fe-layered double hydroxide (LDH), leading to the feedback formation of nitrogen vacancies and a maximization of cation redox activity. The holey TiN-LDH nanohybrid is found to exhibit a superior functionality as an oxygen electrocatalyst and electrode for Li-O2 batteries compared to its non-holey homologues. The great impact of hybridization-driven vacancy introduction on the electrochemical performance originates from an efficient electrochemical activation of both Fe and Ni ions during electrocatalytic process, a reinforcement of interfacial electronic coupling, an increase in electrochemical active sites, and an improvement in electrocatalysis/charge-transfer kinetics.
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Affiliation(s)
- Xiaoyan Jin
- Department of Materials Science and EngineeringCollege of EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Taehun Lee
- Center for Artificial Synesthesia Materials DiscoveryDepartment of Materials Science and EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Wilson Tamakloe
- Department of Materials Science and EngineeringKorea UniversitySeoul02841Republic of Korea
| | - Sharad B. Patil
- Department of Chemistry and NanoscienceCollege of Natural SciencesEwha Womans UniversitySeoul03760Republic of Korea
| | - Aloysius Soon
- Center for Artificial Synesthesia Materials DiscoveryDepartment of Materials Science and EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Yong‐Mook Kang
- Department of Materials Science and EngineeringKorea UniversitySeoul02841Republic of Korea
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
| | - Seong‐Ju Hwang
- Department of Materials Science and EngineeringCollege of EngineeringYonsei UniversitySeoul03722Republic of Korea
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7
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Xue Y, Liu M, Qin Y, Zhang Y, Zhang X, Fang J, Zhang X, Zhu W, Zhuang Z. Ultrathin NiFeS nanosheets as highly active electrocatalysts for oxygen evolution reaction. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.11.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Jin X, Gu TH, Kwon NH, Hwang SJ. Synergetic Advantages of Atomically Coupled 2D Inorganic and Graphene Nanosheets as Versatile Building Blocks for Diverse Functional Nanohybrids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005922. [PMID: 33890336 DOI: 10.1002/adma.202005922] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/20/2020] [Indexed: 05/05/2023]
Abstract
2D nanostructured materials, including inorganic and graphene nanosheets, have evoked plenty of scientific research activity due to their intriguing properties and excellent functionalities. The complementary advantages and common 2D crystal shapes of inorganic and graphene nanosheets render their homogenous mixtures powerful building blocks for novel high-performance functional hybrid materials. The nanometer-level thickness of 2D inorganic/graphene nanosheets allows the achievement of unusually strong electronic couplings between sheets, leading to a remarkable improvement in preexisting functionalities and the creation of unexpected properties. The synergetic merits of atomically coupled 2D inorganic-graphene nanosheets are presented here in the exploration of novel heterogeneous functional materials, with an emphasis on their critical roles as hybridization building blocks, interstratified sheets, additives, substrates, and deposited monolayers. The great flexibility and controllability of the elemental compositions, defect structures, and surface natures of inorganic-graphene nanosheets provide valuable opportunities for exploring high-performance nanohybrids applicable as electrodes for supercapacitors and rechargeable batteries, electrocatalysts, photocatalysts, and water purification agents, to give some examples. An outlook on future research perspectives for the exploitation of emerging 2D nanosheet-based hybrid materials is also presented along with novel synthetic strategies to maximize the synergetic advantage of atomically mixed 2D inorganic-graphene nanosheets.
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Affiliation(s)
- Xiaoyan Jin
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Tae-Ha Gu
- Department of Chemistry and Nanoscience, College of Natural Science, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Nam Hee Kwon
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Seong-Ju Hwang
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
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9
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Dey A, Ramlal VR, Sankar SS, Kundu S, Mandal AK, Das A. Self-assembled cationic organic nanosheets: role of positional isomers in a guanidinium-core for efficient lithium-ion conduction. Chem Sci 2021; 12:13878-13887. [PMID: 34760173 PMCID: PMC8549776 DOI: 10.1039/d1sc04017k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/17/2021] [Indexed: 11/21/2022] Open
Abstract
The growing energy demand with the widespread use of smart portable electronics, as well as an exponential increase in demand for smart batteries for electric vehicles, entails the development of efficient portable batteries with high energy density and safe power storage systems. Li-ion batteries arguably have superior energy density to all other traditional batteries. Developing mechanically robust solid-state electrolytes (SSEs) for lithium-ion conduction for an efficient portable energy storage unit is vital to empower this technology and overcome the safety constraints of liquid electrolytes. Herein, we report the formation of self-assembled organic nanosheets (SONs) utilizing positional isomers of small organic molecules (AM-2 and AM-3) for use as SSEs for lithium-ion conduction. Solvent-assisted exfoliation of the bulk powder yielded SONs having near-atomic thickness (∼4.5 nm) with lateral dimensions in the micrometer range. In contrast, self-assembly in the DMF/water solvent system produced a distinct flower-like morphology. Thermodynamic parameters, crystallinity, elemental composition, and nature of H-bonding for two positional isomers are established through various spectroscopic and microscopic studies. The efficiency of the lithium-ion conducting properties is correlated with factors like nanostructure morphology, ionic scaffold, and locus of the functional group responsible for forming the directional channel through H-bonding in the positional isomer. Amongst the three different morphologies studied, SONs display higher ion conductivity. In between the cationic and zwitterionic forms of the monomer, integration of the cationic scaffold in the SON framework led to higher conductivity. Amongst the two positional isomers, the meta-substituted carboxyl group forms a more rigid directional channel through H-bonding to favor ionic mobility and accounts for the highest ion conductivity of 3.42 × 10-4 S cm-1 with a lithium-ion transference number of 0.49 at room temperature. Presumably, this is the first demonstration that signifies the importance of the cationic scaffold, positional isomers, and nanostructure morphologies in improving ionic conductivity. The ion-conducting properties of such SONs having a guanidinium-core may have significance for other interdisciplinary energy-related applications.
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Affiliation(s)
- Ananta Dey
- Analytical and Environmental Science Division, Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute Bhavnagar Gujarat-364002 India .,Academy of Scientific and Innovative Research (AcSIR), CSIR - Human Resource Development Centre (HRDC) Campus Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh-201 002 India
| | - Vishwakarma Ravikumar Ramlal
- Analytical and Environmental Science Division, Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute Bhavnagar Gujarat-364002 India .,Academy of Scientific and Innovative Research (AcSIR), CSIR - Human Resource Development Centre (HRDC) Campus Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh-201 002 India
| | - Selvasundarasekar Sam Sankar
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI) Karaikudi Tamil Nadu 630003 India
| | - Subrata Kundu
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI) Karaikudi Tamil Nadu 630003 India
| | - Amal Kumar Mandal
- Analytical and Environmental Science Division, Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute Bhavnagar Gujarat-364002 India .,Academy of Scientific and Innovative Research (AcSIR), CSIR - Human Resource Development Centre (HRDC) Campus Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh-201 002 India
| | - Amitava Das
- Academy of Scientific and Innovative Research (AcSIR), CSIR - Human Resource Development Centre (HRDC) Campus Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh-201 002 India.,Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata Mohanpur 741 246 West Bengal India
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10
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Zheng T, Kang X, Liu Z. Effective enhancement of capacitive performance by the facile exfoliation of bulk metal-organic frameworks into 2D-functionalized nanosheets. NANOSCALE 2021; 13:13273-13284. [PMID: 34259294 DOI: 10.1039/d1nr02164h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Recently, much attention has been paid to two-dimensional MOF nanosheets (MONs) due to their widespread application in many specific areas. In this work, a simple and efficient congenerous-exfoliation strategy was developed to prepare vast and uniform few-layered Ni2+@Ce-MOF (Ce-MOF: {[Ce(HPIA)(PIA)(H2O)2]·H2O}n) nanosheets with a thickness of ca. 10 nm. In the exfoliation process, the synergistic action of Ni2+ and methanol solvents under ultrasonication plays a major role in restraining the interactions between the layers. Importantly, supercapacitor applications indicate that the exfoliated Ni2+@Ce-MOF nanosheet shows a remarkable improvement in the specific capacitance (921.05%) in comparison with that of the bulk Ce-MOF sample before modification.
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Affiliation(s)
- Tianxiang Zheng
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, PR China.
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11
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Dey A, Ramlal VR, Sankar SS, Mahapatra TS, Suresh E, Kundu S, Mandal AK, Das A. Crystalline Free-Standing Two-Dimensional Zwitterionic Organic Nanosheets for Efficient Conduction of Lithium Ions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:58122-58131. [PMID: 33331153 DOI: 10.1021/acsami.0c17683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Crystalline two-dimensional organic nanosheets (2D-ONs) having atomic or near-atomic thickness with infinite lateral dimensions are of crucial significance for their possible application as a material for energy storage. The presence of nanofluidic channels with a designed array of molecular interlayers in such 2D-ONs, for a favorable lithium-ion transport, has special significance for improving the efficacy of lithium-ion batteries. However, the rational design of crystalline 2D-ONs remains a challenge because of the lack of appropriate monomers and convenient preparation methods. Herein, we report a unique lithium-ion conducting behavior of zwitterionic 2D-ONs, formed through self-assembly of a small organic molecule AM-1. Different microscopic studies confirm the near-atomic thickness (∼3.5 nm) of these 2D-ONs. Results of the single-crystal X-ray diffraction studies confirm the presence of a one-dimensional (1D) channel in crystalline 2D-ONs, which was generated during the self-assembly process of the zwitterionic monomer scaffold. The presence of immobilized ionic centers with well-defined directional channels in the 2D-ONs favors the transportation of lithium ions with a room-temperature lithium-ion conductivity of 5.14 × 10-5 S cm-1, which is rather unique for self-assembled 2D-ONs.
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Affiliation(s)
- Ananta Dey
- Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201 002, India
| | - Vishwakarma Ravikumar Ramlal
- Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
| | - Selvasundarasekar Sam Sankar
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Tufan Singha Mahapatra
- ICFAI Science School (Chemistry), ICFAI University Tripura, Agartala 799210 Tripura (W), India
| | - Eringathodi Suresh
- Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201 002, India
| | - Subrata Kundu
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Amal Kumar Mandal
- Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201 002, India
| | - Amitava Das
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201 002, India
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246 West Bengal, India
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12
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Li M, Fu K, Wang Z, Cao C, Yang J, Zhai Q, Zhou Z, Ji J, Xue Y, Tang C. Enhanced Adsorption of Polysulfides on Carbon Nanotubes/Boron Nitride Fibers for High-Performance Lithium-Sulfur Batteries. Chemistry 2020; 26:17567-17573. [PMID: 32965742 DOI: 10.1002/chem.202003807] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Indexed: 11/07/2022]
Abstract
Lithium-sulfur (Li-S) batteries are one of the most promising high-energy-density storage systems. However, serious capacity attenuation and poor cycling stability induced by the shuttle effect of polysulfide intermediates can impede the practical application of Li-S batteries. Herein we report a novel sulfur cathode by intertwining multi-walled carbon nanotubes (CNTs) and porous boron nitride fibers (BNFs) for the subsequent loading of sulfur. This structural design enables trapping of active sulfur and serves to localize the soluble polysulfide within the cathode region, leading to low active material loss. Compared with CNTs/S, CNTs/BNFs/S cathodes deliver a high initial capacity of 1222 mAh g-1 at 0.1 C. Upon increasing the current density to 4 C, the cell retained a capacity of 482 mAh g-1 after 500 cycles with a capacity decay of only 0.044 % per cycle. The design of CNTs/BNFs/S gives new insight on how to optimize cathodes for Li-S batteries.
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Affiliation(s)
- Mengyuan Li
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Kun Fu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Zhixuan Wang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China
| | - Chaochao Cao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Jingwen Yang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Qinghong Zhai
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Zheng Zhou
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Jiawei Ji
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Yanming Xue
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
| | - Chengchun Tang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, PR China.,Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin, 300130, PR China
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13
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Nanomaterial-based fluorescent biosensors for monitoring environmental pollutants: A critical review. TALANTA OPEN 2020. [DOI: 10.1016/j.talo.2020.100006] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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14
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Gu TH, Kwon NH, Lee KG, Jin X, Hwang SJ. 2D inorganic nanosheets as versatile building blocks for hybrid electrode materials for supercapacitor. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213439] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Recent Advancements and Future Prospects in Ultrathin 2D Semiconductor-Based Photocatalysts for Water Splitting. Catalysts 2020. [DOI: 10.3390/catal10101111] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Ultrathin two-dimensional (2D) semiconductor-mediated photocatalysts have shown their compelling potential and have arguably received tremendous attention in photocatalysis because of their superior thickness-dependent physical, chemical, mechanical and optical properties. Although numerous comprehensions about 2D semiconductor photocatalysts have been amassed up to now, low cost efficiency, degradation, kinetics of charge transfer along with recycling are still the big challenges to realize a wide application of 2D semiconductor-based photocatalysis. At present, most photocatalysts still need rare or expensive noble metals to improve the photocatalytic activity, which inhibits their commercial-scale application extremely. Thus, developing less costly, earth-abundant semiconductor-based photocatalysts with efficient conversion of sunlight energy remains the primary challenge. In this review, it begins with a brief description of the general mechanism of overall photocatalytic water splitting. Then a concise overview of different types of 2D semiconductor-mediated photocatalysts is given to figure out the advantages and disadvantages for mentioned semiconductor-based photocatalysis, including the structural property and stability, synthesize method, electrochemical property and optical properties for H2/O2 production half reaction along with overall water splitting. Finally, we conclude this review with a perspective, marked on some remaining challenges and new directions of 2D semiconductor-mediated photocatalysts.
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16
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Unique advantages of 2D inorganic nanosheets in exploring high-performance electrocatalysts: Synthesis, application, and perspective. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213280] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Gu TH, Kim J, Oh SM, Jin X, Hwang SJ. Interstratified heterostructures of metal hydroxide nanoclusters and MoS 2 monolayers with improved electrode performance. NANOSCALE 2020; 12:11759-11766. [PMID: 32458874 DOI: 10.1039/d0nr02569k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Interstratified 2D nanohybrids of chromium hydroxide-molybdenum disulfide with improved electrode functionality are synthesized by the self-assembly of anionic monolayered MoS2 nanosheets with cationic chromium hydroxide nanoclusters. The intercalative hybridization of MoS2 with chromium hydroxide nanoclusters leads to a significant increase of basal spacing as well as to the formation of an open porous stacking structure. This is the first example of metal hydroxide nanocluster-pillared transition metal dichalcogenide (TMD) hybrid materials. According to extended X-ray absorption fine structure analysis, open tetrameric chromium hydroxide nanoclusters are stabilized in-between metallic 1T'-MoS2 monolayers. In comparison with the pristine MoS2 material, the chromium hydroxide-pillared molybdenum disulfide nanohybrids show remarkably improved charge storage capacity with excellent rate performance for lithium ion batteries, highlighting the beneficial effect of pillaring with metal hydroxides on the electrode performance of MoS2. The improvement of electrode functionality upon hybridization is attributable to the increase of basal spacing, the stabilization of metallic 1T'-MoS2 content, the improvement of charge transfer kinetics, and the stabilization of the open porous structure upon electrochemical cycling. The present study clearly demonstrates that an electrostatically-driven self-assembly between exfoliated TMD nanosheets and cationic inorganic nanoclusters can provide an effective way of synthesizing heterostructured hybrid electrode materials with improved performance.
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Affiliation(s)
- Tae-Ha Gu
- Department of Chemistry and Nanoscience, College of Natural Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jungeun Kim
- Department of Chemistry and Nanoscience, College of Natural Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Seung Mi Oh
- Department of Chemistry and Nanoscience, College of Natural Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Xiaoyan Jin
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Seong-Ju Hwang
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul 03722, Republic of Korea.
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Qu D, Sun Z, Xu J, Song Z, Kong H, Zhao B, Dong X, Niu L. Rational Construction of 2D Fe 3 O 4 @Carbon Core-Shell Nanosheets as Advanced Anode Materials for High-Performance Lithium-Ion Half/Full Cells. Chemistry 2020; 26:8121-8128. [PMID: 32162436 DOI: 10.1002/chem.202000743] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/10/2020] [Indexed: 01/06/2023]
Abstract
Transition metal oxides have vastly limited practical application as electrode materials for lithium-ion batteries (LIBs) due to their rapid capacity decay. Here, a versatile strategy to mitigate the volume expansion and low conductivity of Fe3 O4 by coating a thin carbon layer on the surface of Fe3 O4 nanosheets (NSs) was employed. Owing to the 2D core-shell structure, the Fe3 O4 @C NSs exhibit significantly improved rate performance and cycle capability compared with bare Fe3 O4 NSs. After 200 cycles, the discharge capacity at 0.5 A g-1 was 963 mA h g-1 (93 % retained). Moreover, the reaction mechanism of lithium storage was studied in detail by ex situ XRD and HRTEM. When coupled with a commercial LiFePO4 cathode, the resulting full cell retains a capacity of 133 mA h g-1 after 100 cycles at 0.1 A g-1 , which demonstrates its superior energy storage performance. This work provides guidance for constructing 2D metal oxide/carbon composites with high performance and low cost for the field of energy storage.
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Affiliation(s)
- Dongyang Qu
- State Key Laboratory of Electroanalytical Chemistry, Engineering Laboratory for Modern Analytical Techniques, CAS Center for Excellence in Nanoscience, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P.R. China.,University of Science and Technology of China, Hefei, 230026, Anhui, P.R. China
| | - Zhonghui Sun
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P.R. China
| | - Jianan Xu
- State Key Laboratory of Electroanalytical Chemistry, Engineering Laboratory for Modern Analytical Techniques, CAS Center for Excellence in Nanoscience, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P.R. China
| | - Zhongqian Song
- State Key Laboratory of Electroanalytical Chemistry, Engineering Laboratory for Modern Analytical Techniques, CAS Center for Excellence in Nanoscience, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P.R. China
| | - Huijun Kong
- State Key Laboratory of Electroanalytical Chemistry, Engineering Laboratory for Modern Analytical Techniques, CAS Center for Excellence in Nanoscience, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P.R. China
| | - Bolin Zhao
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P.R. China
| | - Xiandui Dong
- State Key Laboratory of Electroanalytical Chemistry, Engineering Laboratory for Modern Analytical Techniques, CAS Center for Excellence in Nanoscience, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P.R. China.,University of Science and Technology of China, Hefei, 230026, Anhui, P.R. China
| | - Li Niu
- State Key Laboratory of Electroanalytical Chemistry, Engineering Laboratory for Modern Analytical Techniques, CAS Center for Excellence in Nanoscience, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P.R. China.,University of Science and Technology of China, Hefei, 230026, Anhui, P.R. China.,Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P.R. China
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19
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Yuan JH, Li LH, Zhang W, Xue KH, Wang C, Wang J, Miao XS, Zeng XC. Pt 5Se 4 Monolayer: A Highly Efficient Electrocatalyst toward Hydrogen and Oxygen Electrode Reactions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:13896-13903. [PMID: 32126760 DOI: 10.1021/acsami.9b22674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Electrocatalysts with high activities toward multiple electrode reactions are scarce and therefore highly sought. Here, we investigate the electrocatalytic performance of the two-dimensional (2D) Pt5Se4 monolayer toward hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). Our density functional theory calculations show that the Pt5Se4 monolayer can serve as a low-Pt-loading trifunctional electrocatalyst with good kinetic and thermal stabilities. Specifically, the HER performance of the Pt5Se4 basal plane is predicted to be superior to that of 2D layered Pd or Pt dichalcogenides. Even considering the solvent effect, the catalytic OER performance of the Pt5Se4 monolayer is predicted to be comparable to the prevalent OER catalyst-IrO2, while the catalytic ORR performance of the Pt5Se4 monolayer is even higher than the predominating Pt(111) surface. Overall, the Pt5Se4 monolayer can be a promising trifunctional catalyst that exhibits high activities toward all hydrogen and oxygen electrode reactions.
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Affiliation(s)
- Jun-Hui Yuan
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li-Heng Li
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wei Zhang
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Kan-Hao Xue
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chundong Wang
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jiafu Wang
- School of Science, Wuhan University of Technology, Wuhan 430070, China
| | - Xiang-Shui Miao
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
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20
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Liu Y, Che Z, Lu X, Zhou X, Han M, Bao J, Dai Z. Nanostructured metal chalcogenides confined in hollow structures for promoting energy storage. NANOSCALE ADVANCES 2020; 2:583-604. [PMID: 36133219 PMCID: PMC9418480 DOI: 10.1039/c9na00753a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 12/25/2019] [Indexed: 06/11/2023]
Abstract
The engineering of progressive nanostructures with subtle construction and abundant active sites is a key factor for the advance of highly efficient energy storage devices. Nanostructured metal chalcogenides confined in hollow structures possess abundant electroactive sites, more ions and electron pathways, and high local conductivity, as well as large interior free space in a quasi-closed structure, thus showing promising prospects for boosting energy-related applications. This review focuses on the most recent progress in the creation of diverse confined hollow metal chalcogenides (CHMCs), and their electrochemical applications. Particularly, by highlighting certain typical examples from these studies, a deep understanding of the formation mechanism of confined hollow structures and the decisive role of microstructure engineering in related performances are discussed and analyzed, aiming at prompting the nanoscale engineering and conceptual design of some advanced confined metal chalcogenide nanostructures. This will appeal to not only the chemistry-, energy-, and materials-related fields, but also environmental protection and nanotechnology, thus opening up new opportunities for applications of CHMCs in various fields, such as catalysis, adsorption and separation, and energy conversion and storage.
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Affiliation(s)
- Ying Liu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 P. R. China
| | - Zhiwen Che
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 P. R. China
| | - Xuyun Lu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 P. R. China
| | - Xiaosi Zhou
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 P. R. China
| | - Min Han
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 P. R. China
| | - Jianchun Bao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 P. R. China
| | - Zhihui Dai
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 P. R. China
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21
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Du H, Wu Z, Xu Y, Liu S, Yang H. Poly(3,4-ethylenedioxythiophene) Based Solid-State Polymer Supercapacitor with Ionic Liquid Gel Polymer Electrolyte. Polymers (Basel) 2020; 12:E297. [PMID: 32024287 PMCID: PMC7077379 DOI: 10.3390/polym12020297] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 01/31/2023] Open
Abstract
In this work, solid-state polymer supercapacitor (SSC) was assembled using poly(3,4-ethylenedioxythiophene/carbon paper (PEDOT/CP) as an electrode and ionic liquid (1-butyl-3-methylimidazole tetrafluoroborate)/polyvinyl alcohol/sulfuric acid (IL/PVA/H2SO4) as a gel polymer electrolyte (GPE). The GPE was treated through freezing-thawing (F/T) cycles to improve the electrochemical properties of PEDOT SSC. Cyclic voltammetry (CV), galvanostatic charge-discharge measurements (GCD) and electrochemical impedance spectroscopy (EIS) techniques and conductivity were carried out to study the electrochemical performance. The results showed that the SSC based on ionic liquid GPE (SSC-IL/PVA/H2SO4) has a higher specific capacitance (with the value of 86.81 F/g at 1 mA/cm2) than the SSC-PVA/H2SO4.The number of F/T cycles has a great effect on the electrochemical performance of the device. The energy density of the SSC treated with 3 F/T cycles was significantly improved, reaching 176.90 Wh/kg. Compared with the traditional electrolytes, IL GPE has the advantages of high ionic conductivity, less volatility, non-flammability and wider potential window. Moreover, the IL GPE has excellent elastic recovery and self-healing performance, leading to its great potential applications in flexible or smart energy storage equipment.
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Affiliation(s)
- Haiyan Du
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Yingze West Street 79, Taiyuan 030024, China; (Z.W.); (Y.X.); (S.L.)
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Nishijo J, Akashi T, Enomoto M, Akita M. Facile Preparation of Organometallic Nanorods from Various Ethynyl-Substituted Molecules. ChemistryOpen 2019; 8:873-878. [PMID: 31333987 PMCID: PMC6610451 DOI: 10.1002/open.201900145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/14/2019] [Indexed: 11/29/2022] Open
Abstract
A facile method to prepare one‐dimensional (1D) organometallic nanomaterials from various ethynyl‐substituted molecules is reported. The reactions of 3‐chloro‐1‐ethynylbenzene, p‐tBu‐phenylacetylene and 4‐ethynylbiphenyl with Cu+ ions in acetonitrile yield nanorod‐shaped copper acetylides (Cu−C≡C−R) crystals. In the case of linear alkynes, namely, propyne, 1‐pentyne and 1‐hexyne, it was found that using an aqueous ammonia/ethanol mixed solvent instead of acetonitrile is a better approach to obtain 1D nanostructures. This procedure also enables us to prepare functional 1D nanomaterials. We demonstrate the preparation of a paramagnetic nanorod from the organic radical p‐ethynylphenyl nitronyl nitroxide, and fluorescent nanorods from 9‐ethynylphenanthrene and 2‐ethynyl‐9,9′‐spirobifluorene.
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Affiliation(s)
- Junichi Nishijo
- Graduate School of Science and Engineering Meisei University, 2-1-1 Hodokubo, Hino Tokyo 191-8506 Japan
| | - Takaaki Akashi
- Graduate School of Science and Engineering Meisei University, 2-1-1 Hodokubo, Hino Tokyo 191-8506 Japan
| | - Masaya Enomoto
- Faculty of Science Division I, Department of Chemistry Tokyo University of Science Kagurazqaka 1-3, Shinjuku-ku Tokyo 162-8601 Japan
| | - Motoko Akita
- Graduate School of Material Science Josai University, 1-1 Keyakidai, Sakado-shi Saitama 350-0295 Japan
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23
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Yi Y, Li H, Chang H, Yang P, Tian X, Liu P, Qu L, Li M, Yang B, Li H, Zhu W, Dai S. Few‐Layer Boron Nitride with Engineered Nitrogen Vacancies for Promoting Conversion of Polysulfide as a Cathode Matrix for Lithium–Sulfur Batteries. Chemistry 2019; 25:8112-8117. [DOI: 10.1002/chem.201900884] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/08/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Yikun Yi
- Shaanxi Key Laboratory of Energy Chemical Process IntensificationSchool of Chemical Engineering and TechnologyXi'an Jiaotong University Xi'an 710049 P.R. China
| | - Hongping Li
- School of Chemistry and Chemical EngineeringJiangsu University Zhenjiang 212013 P.R. China
| | - Honghong Chang
- School of Chemistry and Chemical EngineeringJiangsu University Zhenjiang 212013 P.R. China
| | - Pu Yang
- Shaanxi Key Laboratory of Energy Chemical Process IntensificationSchool of Chemical Engineering and TechnologyXi'an Jiaotong University Xi'an 710049 P.R. China
| | - Xiaolu Tian
- Shaanxi Key Laboratory of Energy Chemical Process IntensificationSchool of Chemical Engineering and TechnologyXi'an Jiaotong University Xi'an 710049 P.R. China
| | - Pei Liu
- Shaanxi Key Laboratory of Energy Chemical Process IntensificationSchool of Chemical Engineering and TechnologyXi'an Jiaotong University Xi'an 710049 P.R. China
| | - Long Qu
- Shaanxi Key Laboratory of Energy Chemical Process IntensificationSchool of Chemical Engineering and TechnologyXi'an Jiaotong University Xi'an 710049 P.R. China
| | - Mingtao Li
- Shaanxi Key Laboratory of Energy Chemical Process IntensificationSchool of Chemical Engineering and TechnologyXi'an Jiaotong University Xi'an 710049 P.R. China
| | - Bolun Yang
- Shaanxi Key Laboratory of Energy Chemical Process IntensificationSchool of Chemical Engineering and TechnologyXi'an Jiaotong University Xi'an 710049 P.R. China
| | - Huaming Li
- School of Chemistry and Chemical EngineeringJiangsu University Zhenjiang 212013 P.R. China
| | - Wenshuai Zhu
- School of Chemistry and Chemical EngineeringJiangsu University Zhenjiang 212013 P.R. China
| | - Sheng Dai
- Chemical Sciences DivisionOak Ridge National Laboratory Oak Ridge TN 37831 USA
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24
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Lee JM, Kang B, Jo YK, Hwang SJ. Organic Intercalant-Free Liquid Exfoliation Route to Layered Metal-Oxide Nanosheets via the Control of Electrostatic Interlayer Interaction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:12121-12132. [PMID: 30838851 DOI: 10.1021/acsami.9b00566] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A scalable organic intercalant-free liquid exfoliation route to 2D nanosheets (NSs) of layered transition-metal oxides (TMOs) is developed by employing hydronium-intercalated derivatives as precursors. The replacement of interlayer alkali metal ions with larger hydronium ions via acid treatment makes possible the efficient liquid exfoliation of TMOs without any assistance of organic intercalant cations. Not only a weakening of interlayer electrostatic interaction upon hydronium intercalation but also an efficient solvation of deintercalated hydronium ions via hydrogen bonding with polar solvents is mainly responsible for the high efficacy of hydronium-intercalated TMOs as precursors for liquid exfoliation. The nature of the solvent employed also has a profound effect on the exfoliation yield of these TMO NSs; viscosity, surface tension, density, and Hansen solubility parameter as well as the capability to solvate the exfoliated NSs and hydronium ions are crucial factors for determining the exfoliation efficiency of the hydronium-intercalated precursor. All the obtained Ti1- xO2, MnO2, and RuO2 NSs show highly anisotropic 2D morphologies and distinct negative surface charges with a zeta potential of -30 to -50 mV. Such distinct surface charges of these NSs render them versatile hybridization matrices for the synthesis of novel nanohybrids with enhanced functionalities. The hybridization with the liquid-exfoliated TMO NSs is quite effective in improving the photocatalytic activity of CdS and the electrode functionalities of graphene and graphene-layered double hydroxide nanohybrids. The present study underscores the usefulness of the present liquid exfoliation method in synthesizing organic-free TMO NSs and their nanohybrids as well as in widening the application field of exfoliated TMO NSs.
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Affiliation(s)
- Jang Mee Lee
- Center for Hybrid Interfacial Chemical Structure (CICS), Department of Chemistry and Nanoscience, College of Natural Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Bohyun Kang
- Center for Hybrid Interfacial Chemical Structure (CICS), Department of Chemistry and Nanoscience, College of Natural Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Yun Kyung Jo
- Center for Hybrid Interfacial Chemical Structure (CICS), Department of Chemistry and Nanoscience, College of Natural Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Seong-Ju Hwang
- Center for Hybrid Interfacial Chemical Structure (CICS), Department of Chemistry and Nanoscience, College of Natural Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
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25
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Basic Concepts and Recent Advances of Crystallographic Orientation Determination of Graphene by Raman Spectroscopy. CRYSTALS 2018. [DOI: 10.3390/cryst8100375] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Graphene is a kind of typical two-dimensional material consisting of pure carbon element. The unique material shows many interesting properties which are dependent on crystallographic orientations. Therefore, it is critical to determine their crystallographic orientations when their orientation-dependent properties are investigated. Raman spectroscopy has been developed recently to determine crystallographic orientations of two-dimensional materials and has become one of the most powerful tools to characterize graphene nondestructively. This paper summarizes basic aspects of Raman spectroscopy in crystallographic orientation of graphene nanosheets, determination principles, the determination methods, and the latest achievements in the related studies.
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