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Yaraki MT, Zahed Nasab S, Zare I, Dahri M, Moein Sadeghi M, Koohi M, Tan YN. Biomimetic Metallic Nanostructures for Biomedical Applications, Catalysis, and Beyond. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00285] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Shima Zahed Nasab
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran 143951561, Iran
| | - Iman Zare
- Research and Development Department, Sina Medical Biochemistry Technologies Co. Ltd., Shiraz 7178795844, Iran
| | - Mohammad Dahri
- Student Research Committee, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | - Mohammad Moein Sadeghi
- Student Research Committee, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | - Maedeh Koohi
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Islamic Republic of Iran
| | - Yen Nee Tan
- Faculty of Science, Agriculture and Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, U.K
- Newcastle Research and Innovation Institute, Newcastle University in Singapore, 80 Jurong East Street 21, No. 05-04, 609607, Singapore
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2
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Wang Y, Yu R, Luo T, Ma G, Hu G, Lyu J, Zhou L, Wu J. Solid Solution of Bi and Sb for Robust Lithium Storage Enabled by Consecutive Alloying Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102915. [PMID: 34365725 DOI: 10.1002/smll.202102915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/11/2021] [Indexed: 06/13/2023]
Abstract
Materials with alloying reactions have significant potential as electrodes for lithium-ion batteries (LIBs) due to its high theoretical capacity and appropriate lithiation potentials. Nonetheless, their cycling performance is inferior due to violent volume expansion and severe pulverization of active materials. Herein, solid solution of Bi0.5 Sb0.5 encapsulated with carbon is discovered to enable consecutive alloying reactions with manageable volume change, suitable for developing LIBs with high capacity and robust cyclability. A Sb-rich shell and Bi-rich core structure is formed in cycling since the alloying reaction between Sb and Li occurs first, followed by the alloying reaction between Bi and Li. Such a consecutive alloying reaction obeying the thermodynamic path is experimentally realized by the carbon capsulation, which acts as a protecting solid layer to avoid polarized reactions occurred when exposed directly to liquid electrolyte. The LIBs using Bi0.5 Sb0.5 @carbon run on the consecutive alloying reactions exhibits high capacity, prolonged lifespan (489.4 mAh g-1 after 2000 cycles at 1 A g-1 ) and fast kinetic, while those using bare Bi0.5 Sb0.5 suffer from worsened kinetic and thus a poor cycling performance owning to the polarized reactions. The work paves a way of developing alloy electrodes for alkaline-ion rechargeable batteries with potential industry applications.
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Affiliation(s)
- Yutao Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
- Nanostructure Research Center, Wuhan University of Technology, Wuhan, 430070, China
| | - Ruohan Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
- Nanostructure Research Center, Wuhan University of Technology, Wuhan, 430070, China
| | - Tingting Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Ganggang Ma
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Guangwu Hu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Jiahui Lyu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
- Nanostructure Research Center, Wuhan University of Technology, Wuhan, 430070, China
| | - Liang Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Jinsong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
- Nanostructure Research Center, Wuhan University of Technology, Wuhan, 430070, China
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3
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Yang W, Xu G, Shu J, Wang M, Ge X. Preparation and adsorption property of novel inverse-opal hierarchical porous N-doped carbon microspheres. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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4
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Karunagaran R, Tran D, Tung TT, Shearer C, Losic D. A Unique Synthesis of Macroporous N-Doped Carbon Composite Catalyst for Oxygen Reduction Reaction. NANOMATERIALS 2020; 11:nano11010043. [PMID: 33375351 PMCID: PMC7824199 DOI: 10.3390/nano11010043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 12/17/2022]
Abstract
Macroporous carbon materials (MCMs) are used extensively for many electrocatalytic applications, particularly as catalysts for oxygen reduction reactions (ORRs)—for example, in fuel cells. However, complex processes are currently required for synthesis of MCMs. We present a rapid and facile synthetic approach to produce tailored MCMs efficiently via pyrolysis of sulfonated aniline oligomers (SAOs). Thermal decomposition of SAO releases SO2 gas which acts as a blowing agent to form the macroporous structures. This process was used to synthesise three specifically tailored nitrogen (N)-doped MCM catalysts: N-SAO, N-SAO (phenol formaldehyde) (PF) and N-SAO-reduced graphene oxide (rGO). Analysis using Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and X-ray diffraction (XRD) analysis confirmed the formation of macropores (100–350 µm). Investigation of ORR efficacy showed that N-SAOPF performed with the highest onset potential of 0.98 V (vs. RHE) and N-SAOrGO showed the highest limiting current density of 7.89 mAcm−2. The macroporous structure and ORR efficacy of the MCM catalysts synthesised using this novel process suggest that this method can be used to streamline MCM production while enabling the formation of composite materials that can be tailored for greater efficiency in many applications.
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Affiliation(s)
- Ramesh Karunagaran
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
| | - Diana Tran
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
| | - Tran Thanh Tung
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
- Correspondence: (T.T.T.); (D.L.)
| | - Cameron Shearer
- School of Chemistry, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Dusan Losic
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
- Correspondence: (T.T.T.); (D.L.)
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5
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Kim JM, Kim JH, Kim J, Lim Y, Kim Y, Alam A, Lee J, Ju H, Ham HC, Kim JY. Synergetic Structural Transformation of Pt Electrocatalyst into Advanced 3D Architectures for Hydrogen Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002210. [PMID: 32989883 DOI: 10.1002/adma.202002210] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/16/2020] [Indexed: 06/11/2023]
Abstract
A new direction for developing electrocatalysts for hydrogen fuel cell systems has emerged, based on the fabrication of 3D architectures. These new architectures include extended Pt surface building blocks, the strategic use of void spaces, and deliberate network connectivity along with tortuosity, as design components. Various strategies for synthesis now enable the functional and structural engineering of these electrocatalysts with appropriate electronic, ionic, and electrochemical features. The new architectures provide efficient mass transport and large electrochemically active areas. To date, although there are few examples of fully functioning hydrogen fuel cell devices, these 3D electrocatalysts have the potential to achieve optimal cell performance and durability, exceeding conventional Pt powder (i.e., Pt/C) electrocatalysts. This progress report highlights the various 3D architectures proposed for Pt electrocatalysts, advances made in the fabrication of these structures, and the remaining technical challenges. Attempts to develop design rules for 3D architectures and modeling, provide insights into their achievable and potential performance. Perspectives on future developments of new multiscale designs are also discussed along with future study directions.
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Affiliation(s)
- Jong Min Kim
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Materials Architecturing Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Joo-Hyung Kim
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- School of Materials Science and Engineering, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jun Kim
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Youngjoon Lim
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Yongmin Kim
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Afroz Alam
- Department of Mechanical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Jaeseung Lee
- Department of Mechanical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Hyunchul Ju
- Department of Mechanical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Hyung Chul Ham
- Department of Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Jin Young Kim
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Graduate School of Energy and Environment (KU-KIST Green School), Korea University, Seoul, 02841, Republic of Korea
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Fauziyah M, Widiyastuti W, Setyawan H. Nitrogen-Doped Carbon Aerogels Prepared by Direct Pyrolysis of Cellulose Aerogels Derived from Coir Fibers Using an Ammonia–Urea System and Their Electrocatalytic Performance toward the Oxygen Reduction Reaction. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03771] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mar’atul Fauziyah
- Department of Chemical Engineering, Faculty of Industrial Technology, Sepuluh Nopember Institute of Technology, Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Widiyastuti Widiyastuti
- Department of Chemical Engineering, Faculty of Industrial Technology, Sepuluh Nopember Institute of Technology, Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Heru Setyawan
- Department of Chemical Engineering, Faculty of Industrial Technology, Sepuluh Nopember Institute of Technology, Kampus ITS Sukolilo, Surabaya 60111, Indonesia
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7
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Du Q, Ma J, Ji J, Wang Q, Guo S, Shao X, Tian G. The roles of free carbon over ZnO in enhancing the photocatalytic properties for removal of Cr(VI). J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1845717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Quanchao Du
- College of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong, China
| | - Jianqi Ma
- College of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong, China
| | - Jianwei Ji
- College of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong, China
| | - Qian Wang
- College of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong, China
| | - Shaobo Guo
- College of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong, China
| | - Xianzhao Shao
- College of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong, China
| | - Guanghui Tian
- College of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong, China
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8
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Pei X, Jiao H, Fu H, Yin X, Luo D, Long S, Gong W, Zhang L. Facile Construction of a Highly Dispersed Pt Nanocatalyst Anchored on Biomass-Derived N/O-Doped Carbon Nanofibrous Microspheres and Its Catalytic Hydrogenation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:51459-51467. [PMID: 33147002 DOI: 10.1021/acsami.0c14581] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
With the depletion of nonrenewable resources and the increasingly serious "white pollution" caused by nondegradable plastics, using renewable biomass resources such as chitin to fabricate materials is a green and sustainable pathway. Herein, for the first time, we used N/O-doped carbon nanofibrous microspheres (CNMs) derived from renewable chitin as carriers to successfully construct a highly dispersed platinum nanocatalyst via a facile way. Various physicochemical characterizations provided reliable evidence for the ultrafine and well-dispersed platinum nanoparticles with an average diameter of 2.3 nm. As the supporting framework, the CNM with interconnected nanofibrous networks and a large surface area facilitated the adhesion and dispersion of Pt particles. Meanwhile, the inherent N/O-containing functional groups and the defects in carbonized chitin could anchor the platinum tightly. The CNM/Pt catalyst was further examined for hydrogenation, and it exhibited promising catalytic activity and stability (∼5 runs, 91%) and a broad applicability. This utilization of biomass resources to build catalyst materials would be important for the green and sustainable chemistry.
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Affiliation(s)
- Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Huibin Jiao
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Hai Fu
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Xiaogang Yin
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Dan Luo
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Siyu Long
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Lina Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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9
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Chen L, Deng J, Hong S, Lian H. Rapid, tunable synthesis of porous carbon xerogels with expanded graphite and their application as anodes for Li-ion batteries. J Colloid Interface Sci 2020; 565:368-377. [PMID: 31981846 DOI: 10.1016/j.jcis.2020.01.048] [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: 10/31/2019] [Revised: 01/12/2020] [Accepted: 01/14/2020] [Indexed: 12/13/2022]
Abstract
The present work reports a rapid, tunable synthesis of resorcinol-formaldehyde (RF) carbon xerogels and their potential application as anode materials for lithium-ion battery. An iron-containing deep eutectic solvent (DES) is applied as both reaction medium and catalyst for the polymerization and graphitization. Water at different levels is employed as a co-solvent to mediate the polymerization and phase separation processes to produce a more-developed porous structure. The established binary-solvent synthesis strategy greatly simplifies the RF carbon xerogel preparation processes with a very short sol-gel time and a more acceptable ambient pressure drying. A duplex carbon configuration of rich microporosity (SBET = 566 m2 g-1) and expanded nanographite is achieved in the binary-solvent system with a DES mass fraction of 70%. The integrated structural merit is highly favorable for lithium storage, showing a reversible capacity of 633 mA h g-1 at 0.1 A g-1 and an excellent rate performance (205 mA h g-1 at 5 A g-1) as well as superior cycling stability.
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Affiliation(s)
- Ling Chen
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China
| | - Junqian Deng
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Shu Hong
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China
| | - Hailan Lian
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China.
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10
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Pan M, Yin Z, Liu K, Du X, Liu H, Wang S. Carbon-Based Nanomaterials in Sensors for Food Safety. NANOMATERIALS 2019; 9:nano9091330. [PMID: 31533228 PMCID: PMC6781043 DOI: 10.3390/nano9091330] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/04/2019] [Accepted: 09/10/2019] [Indexed: 12/12/2022]
Abstract
Food safety is one of the most important and widespread research topics worldwide. The development of relevant analytical methods or devices for detection of unsafe factors in foods is necessary to ensure food safety and an important aspect of the studies of food safety. In recent years, developing high-performance sensors used for food safety analysis has made remarkable progress. The combination of carbon-based nanomaterials with excellent properties is a specific type of sensor for enhancing the signal conversion and thus improving detection accuracy and sensitivity, thus reaching unprecedented levels and having good application potential. This review describes the roles and contributions of typical carbon-based nanomaterials, such as mesoporous carbon, single- or multi-walled carbon nanotubes, graphene and carbon quantum dots, in the construction and performance improvement of various chemo- and biosensors for various signals. Additionally, this review focuses on the progress of applications of this type of sensor in food safety inspection, especially for the analysis and detection of all types of toxic and harmful substances in foods.
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Affiliation(s)
- Mingfei Pan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China.
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Zongjia Yin
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China.
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Kaixin Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China.
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Xiaoling Du
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China.
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Huilin Liu
- College of Food and Health, Beijing Technology and Business University, Beijing 100048, China.
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China.
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
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Yoon HJ, Lee JY, Lee JS, Yoon TH. Monolithic carbon xerogel with co-continuous hierarchical porosity via one-step, template- and catalyst-free hydrothermal reaction with resorcinol and formaldehyde. RSC Adv 2019; 9:9480-9485. [PMID: 35520742 PMCID: PMC9062128 DOI: 10.1039/c9ra00904c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 03/20/2019] [Indexed: 11/21/2022] Open
Abstract
Monolithic carbon xerogel (MCX) with co-continuous hierarchical porosity was prepared via a one-step, template- and catalyst-free hydrothermal polycondensation reaction with resorcinol, formaldehyde and distilled water.
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Affiliation(s)
- Hyoung-Ju Yoon
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 61005
- Republic of Korea
| | - Jae Young Lee
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 61005
- Republic of Korea
| | - Jae-Suk Lee
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 61005
- Republic of Korea
| | - Tae-Ho Yoon
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 61005
- Republic of Korea
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12
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Zhang M, Chen Y, Chen B, Zhang Y, Lin L, Han X, Zou P, Wang G, Zeng J, Zhao M. Fabrication of a three-dimensional visible-light-driven Ag–AgBr/TiO2/graphene aerogel composite for enhanced photocatalytic destruction of organic dyes and bacteria. NEW J CHEM 2019. [DOI: 10.1039/c8nj06057f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The configuration of Ag–AgBr/TiO2/GA integrated critical components of solar absorption and charge separation for environmental remediation and antibacterial treatment.
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Affiliation(s)
- Mingjing Zhang
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Yuexing Chen
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Bangjie Chen
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Yunsong Zhang
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Li Lin
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Xiaowen Han
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Ping Zou
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Guangtu Wang
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
| | - Jun Zeng
- Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education
- Sichuan University of Science Engineering
- Zigong 643002
- China
| | - Maojun Zhao
- College of Science
- Sichuan Agricultural University
- Yaan 625014
- China
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13
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Xiao X, Liu L, Ma J, Ren Y, Cheng X, Zhu Y, Zhao D, Elzatahry AA, Alghamdi A, Deng Y. Ordered Mesoporous Tin Oxide Semiconductors with Large Pores and Crystallized Walls for High-Performance Gas Sensing. ACS APPLIED MATERIALS & INTERFACES 2018; 10:1871-1880. [PMID: 29260553 DOI: 10.1021/acsami.7b18830] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Owing to their distinct chemical and physical properties, mesoporous metal oxide semiconductors have shown great application potential in catalysis, electrochemistry, energy conversion, and energy storage. In this study, mesoporous crystalline SnO2 materials have been synthesized through an evaporation-induced co-assembly (EICA) method using poly(ethylene oxide)-b-polystyrene diblock copolymers as the template, tin chlorides as the tin sources, and tetrahydrofuran as the solvent. By controlling conditions of the co-assembly process and employing a carbon-supported thermal treatment strategy, highly ordered mesoporous SnO2 materials with a hexagonal mesostructure (space group P63/mmc) and crystalline pore walls can be obtained. The mesoporous SnO2 is employed for fabricating gas sensor nanodevices which exhibit an excellent sensing performance toward H2S with high sensitivity (170, 50 ppm) and superior stability, owing to its high surface area (98 m2/g), well-connected mesopores of ca. 18.0 nm, and high density of active sites in the crystalline pore walls. The chemical mechanism study reveals that both SO2 and SnS2 are generated during the gas sensing process on the SnO2-based sensors.
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Affiliation(s)
- Xingyu Xiao
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China
| | - Liangliang Liu
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China
| | - Junhao Ma
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China
| | - Yuan Ren
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China
| | - Xiaowei Cheng
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China
| | - Yongheng Zhu
- College of Food Science and Technology, Shanghai Ocean University , Shanghai 201306, China
| | - Dongyuan Zhao
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China
| | - Ahmed A Elzatahry
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University , P.O. Box 2713, Doha, Qatar
| | - Abdulaziz Alghamdi
- Department of Chemistry, College of Science, King Saud University , Riyadh 11451, Saudi Arabia
| | - Yonghui Deng
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences , Shanghai 200050, China
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14
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Wang C, Sun Y, Yuan L, Huang F, Li S, Yuan Y, Shen Y, Xie A. A novel octaethylporphrin platinum sensitized TiO2 inverse opal: Construction and enhanced photoelectrochemical performance and photocatalytic activity. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Wang J, Yang C, Zhao YR, Fan HL, Wang ZD, Shangguan J, Mi J. Synthesis of Porous Cobalt Oxide and Its Performance for H2S Removal at Room Temperature. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02934] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian Wang
- State Key Laboratory of Coal Science and Technology,
Co-founded by Shanxi Province and the Ministry of Science and Technology,
Institute for Chemical Engineering of Coal, Taiyuan University of Technology, West Yingze Street No. 79, Taiyuan 030024, People’s Republic of China
| | - Chao Yang
- State Key Laboratory of Coal Science and Technology,
Co-founded by Shanxi Province and the Ministry of Science and Technology,
Institute for Chemical Engineering of Coal, Taiyuan University of Technology, West Yingze Street No. 79, Taiyuan 030024, People’s Republic of China
| | - Ying-Rui Zhao
- State Key Laboratory of Coal Science and Technology,
Co-founded by Shanxi Province and the Ministry of Science and Technology,
Institute for Chemical Engineering of Coal, Taiyuan University of Technology, West Yingze Street No. 79, Taiyuan 030024, People’s Republic of China
| | - Hui-Ling Fan
- State Key Laboratory of Coal Science and Technology,
Co-founded by Shanxi Province and the Ministry of Science and Technology,
Institute for Chemical Engineering of Coal, Taiyuan University of Technology, West Yingze Street No. 79, Taiyuan 030024, People’s Republic of China
| | - Zhong-De Wang
- State Key Laboratory of Coal Science and Technology,
Co-founded by Shanxi Province and the Ministry of Science and Technology,
Institute for Chemical Engineering of Coal, Taiyuan University of Technology, West Yingze Street No. 79, Taiyuan 030024, People’s Republic of China
| | - Ju Shangguan
- State Key Laboratory of Coal Science and Technology,
Co-founded by Shanxi Province and the Ministry of Science and Technology,
Institute for Chemical Engineering of Coal, Taiyuan University of Technology, West Yingze Street No. 79, Taiyuan 030024, People’s Republic of China
| | - Jie Mi
- State Key Laboratory of Coal Science and Technology,
Co-founded by Shanxi Province and the Ministry of Science and Technology,
Institute for Chemical Engineering of Coal, Taiyuan University of Technology, West Yingze Street No. 79, Taiyuan 030024, People’s Republic of China
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16
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Park SK, Lee J, Hwang T, Jang B, Piao Y. Scalable Synthesis of Honeycomb-like Ordered Mesoporous Carbon Nanosheets and Their Application in Lithium-Sulfur Batteries. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2430-2438. [PMID: 28008762 DOI: 10.1021/acsami.6b13370] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
There is a growing need to improve the electrical conductivity of the cathode and to suppress the rapid capacity decay during cycling in lithium-sulfur (Li-S) batteries. This can be achieved by developing facile methods for the synthesis of novel nanostructured carbon materials that can function as effective cathode hosts. In this Article, we report the scalable synthesis of ordered mesoporous carbon nanosheets (OMCNS) via the etching of self-assembled iron oxide/carbon hybrid nanosheets (IO-C NS), which serve as an advanced sulfur host for Li-S batteries. The obtained two-dimensional (2D) nanosheets have close-packed uniform cubic mesopores of ∼20 nm side length, and the gap between the pores is ∼4 nm, which resembles the honeycomb structure consisting of an ordered array of hexagonal pores. We loaded OMCNS with sulfur by a simple melting infusion process and evaluated the performance of the resulting OMCNS-sulfur composites as the cathode material. As a result, the sulfur-loaded OMCNS hybrid (OMCNS-S) electrode infiltrated with 70 wt % sulfur delivers a high and stable reversible capacity of 505.7 mA h g-1 after 500 cycles at 0.5 C-rate with excellent capacity retention (a decay of 0.081% per cycle) and excellent rate capability (580.6 mA h g-1 at a high current density of 2 C). The improved electrochemical properties could be attributed to the fact that the uniform cubic mesopores offer sufficient space for the volume expansion of sulfur inside them and therefore trap the polysulfides during the charging-discharging process. Therefore, these unique structured carbon nanosheets can be promising candidates for other energy-storage applications.
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Affiliation(s)
- Seung-Keun Park
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University , 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-270, Republic of Korea
| | - Jeongyeon Lee
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University , 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-270, Republic of Korea
| | - Taejin Hwang
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University , 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-270, Republic of Korea
| | - Byungchul Jang
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University , 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-270, Republic of Korea
| | - Yuanzhe Piao
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University , 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-270, Republic of Korea
- Advanced Institutes of Convergence Technology , 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-270, Republic of Korea
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17
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Effect of heat pre-treatment conditions on the electrochemical properties of mangrove wood-derived hard carbon as an effective anode material for lithium-ion batteries. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.07.138] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Synthesis of hollow carbon nanostructures as a non-precious catalyst for oxygen reduction reaction. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.01.135] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Zhu H, Fang M, Huang Z, Liu Y, Chen K, Tang C, Wang M, Zhang L, Wu X. Novel carbon-incorporated porous ZnFe2O4nanospheres for enhanced photocatalytic hydrogen generation under visible light irradiation. RSC Adv 2016. [DOI: 10.1039/c6ra05098k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Surface hybridization of ZnFe2O4nanospheres with graphite-like carbon layers yields enhanced photocatalytic hydrogen production activity.
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Affiliation(s)
- Hekai Zhu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Minghao Fang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Zhaohui Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Yan'gai Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Kai Chen
- National Engineering Research Center for Rare Earth Materials
- General Research Institute For Nonferrous Metals
- Grirem Advanced Materials Co., Ltd
- Beijing 100088
- PR China
| | - Chao Tang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Meng Wang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Lina Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Xiaowen Wu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
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20
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Liu M, Zhou M, Ma L, Yang H, Zhao Y. Architectural design of hierarchically meso–macroporous carbon for microbial fuel cell anodes. RSC Adv 2016. [DOI: 10.1039/c5ra26420k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The HN-C exhibited a high power density (1034 mW m−2), which was much higher than the macroporous carbon anode MFC (811 mW m−2) and mesoporous carbon anode MFC (678 mW m−2) and was 2.2-folds that of carbon cloth anode MFC (467 mW m−2).
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Affiliation(s)
- Mengmeng Liu
- Tianjin Key Laboratory of Pollution Process and Environmental Criteria
- Ministry of Education
- College of Environmental Science and Engineering
- Nankai University
- Tianjin 30071
| | - Minghua Zhou
- Tianjin Key Laboratory of Pollution Process and Environmental Criteria
- Ministry of Education
- College of Environmental Science and Engineering
- Nankai University
- Tianjin 30071
| | - Liang Ma
- Tianjin Key Laboratory of Pollution Process and Environmental Criteria
- Ministry of Education
- College of Environmental Science and Engineering
- Nankai University
- Tianjin 30071
| | - Huijia Yang
- Tianjin Key Laboratory of Pollution Process and Environmental Criteria
- Ministry of Education
- College of Environmental Science and Engineering
- Nankai University
- Tianjin 30071
| | - Yingying Zhao
- Tianjin Key Laboratory of Pollution Process and Environmental Criteria
- Ministry of Education
- College of Environmental Science and Engineering
- Nankai University
- Tianjin 30071
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21
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Chen A, Zhao T, Gao H, Chen L, Chen J, Yu Y. Titanate nanotube-promoted chemical fixation of carbon dioxide to cyclic carbonate: a combined experimental and computational study. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01024a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Titanate nanotubes are efficiently used as air- and water-tolerant, and recyclable Lewis acid catalysts for CO2 fixation to cyclic carbonate.
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Affiliation(s)
- Aibing Chen
- College of Chemical and Pharmaceutical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050018
- PR China
| | - Tiancong Zhao
- College of Chemical and Pharmaceutical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050018
- PR China
- CAS Key Laboratory of Renewable Energy
| | - Hui Gao
- CAS Key Laboratory of Renewable Energy
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- PR China
| | - Limin Chen
- School of Environment and Energy
- South China University of Technology
- Guangzhou Higher Education Mega Centre
- Guangzhou 510006
- PR China
| | - Jinzhu Chen
- CAS Key Laboratory of Renewable Energy
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- PR China
| | - Yifeng Yu
- College of Chemical and Pharmaceutical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050018
- PR China
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22
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Chang PY, Bindumadhavan K, Doong RA. Size Effect of Ordered Mesoporous Carbon Nanospheres for Anodes in Li-Ion Battery. NANOMATERIALS (BASEL, SWITZERLAND) 2015; 5:2348-2358. [PMID: 28347125 PMCID: PMC5304780 DOI: 10.3390/nano5042348] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 12/08/2015] [Accepted: 12/10/2015] [Indexed: 11/16/2022]
Abstract
The present work demonstrates the application of various sizes of ordered mesoporous carbon nanospheres (OMCS) with diameters of 46-130 nm as an active anode material for Li-ion batteries (LIB). The physical and chemical properties of OMCS have been evaluated by performing scanning electron microscopy (SEM), transmission electron microscopy (TEM), N₂ adsorption-desorption analysis; small-angle scattering system (SAXS) and X-ray diffraction (XRD). The electrochemical analysis of using various sizes of OMCS as anode materials showed high capacity and rate capability with the specific capacity up to 560 mA·h·g-1 at 0.1 C after 85 cycles. In terms of performance at high current rate compared to other amorphous carbonaceous materials; a stable and extremely high specific capacity of 240 mA·h·g-1 at 5 C after 15 cycles was achieved. Such excellent performance is mainly attributed to the suitable particle size distribution of OMCS and intimate contact between OMCS and conductive additives; which can be supported from the TEM images. Results obtained from this study clearly indicate the excellence of size distribution of highly integrated mesoporous structure of carbon nanospheres for LIB application.
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Affiliation(s)
- Pei-Yi Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Kartick Bindumadhavan
- Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
| | - Ruey-An Doong
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan.
- Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
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23
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Kang DY, Kim C, Gueon D, Park G, Kim JS, Lee JK, Moon JH. 3D Woven-Like Carbon Micropattern Decorated with Silicon Nanoparticles for Use in Lithium-Ion Batteries. CHEMSUSCHEM 2015; 8:3414-3418. [PMID: 26383881 DOI: 10.1002/cssc.201501041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Indexed: 06/05/2023]
Abstract
Carbon/silicon composite materials are a promising anode substrate for use in lithium-ion batteries. In this study, we suggest a new architecture for a composite electrode made of a woven-like carbon material decorated with silicon nanoparticles. The 3D woven-like carbon (WLC) structure was fabricated using direct carbonization of multi-beam interference lithography polymer patterns. Subsequent solution coating was applied to decorate the WLC with silicon nanoparticles (SiNPs). The SiNP/WLC electrode exhibited a specific capacity of 930 mAh g(-1) , which is three times higher than the specific capacity of the bare electrode. Specifically, the SiNP/WLC electrode exhibited an outstanding retention capacity of 81 % after 50 cycles and a Coulombic efficiency of more than 98 %. This rate capability performance was attributed to the WLC structure and the uniform decoration of the SiNPs.
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Affiliation(s)
- Da-Young Kang
- Department of Chemical and Biomolecular Engineering, Sogang University, 1 Sinsu-dong Mapo-gu, Seoul, 121-742, Republic of Korea
| | - Cheolho Kim
- Department of Chemical and Biomolecular Engineering, Sogang University, 1 Sinsu-dong Mapo-gu, Seoul, 121-742, Republic of Korea
| | - Donghee Gueon
- Department of Chemical and Biomolecular Engineering, Sogang University, 1 Sinsu-dong Mapo-gu, Seoul, 121-742, Republic of Korea
| | - Gyulim Park
- Department of Chemical and Biomolecular Engineering, Sogang University, 1 Sinsu-dong Mapo-gu, Seoul, 121-742, Republic of Korea
| | - Jung Sub Kim
- Center for Energy Convergence, Korea Institute of Science and Technology, 5 Hwarangno 14-gil, Seongbuk-gu, Seoul, 136-791, Republic of Korea
| | - Joong Kee Lee
- Center for Energy Convergence, Korea Institute of Science and Technology, 5 Hwarangno 14-gil, Seongbuk-gu, Seoul, 136-791, Republic of Korea
| | - Jun Hyuk Moon
- Department of Chemical and Biomolecular Engineering, Sogang University, 1 Sinsu-dong Mapo-gu, Seoul, 121-742, Republic of Korea.
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24
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Zhao Q, Wang X, Xia H, Liu J, Wang H, Gao J, Zhang Y, Liu J, Zhou H, Li X, Zhang S, Wang X. Design, preparation and performance of novel three-dimensional hierarchically porous carbon for supercapacitors. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.05.096] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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An Q, Wei Q, Zhang P, Sheng J, Hercule KM, Lv F, Wang Q, Wei X, Mai L. Three-Dimensional Interconnected Vanadium Pentoxide Nanonetwork Cathode for High-Rate Long-Life Lithium Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:2654-2660. [PMID: 25630580 DOI: 10.1002/smll.201403358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/24/2014] [Indexed: 06/04/2023]
Abstract
Three-dimensional interconnected vanadium pentoxide nanonetworks as cathodes for rechargable lithium batteries are successfully synthesized via a quick gelation followed by annealing. The interconnected structure ensures the electron transport of each unit. And their inner porous structure buffer the volume change over long-term repeated lithium ion insertion/extraction cycles, leading to the high-rate long-life cycling performance.
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Affiliation(s)
- Qinyou An
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
- Department of Electrical & Computer Engineering, University of Houston, Houston, Texas, 77204, USA
| | - Qiulong Wei
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Pengfei Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Jinzhi Sheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Kalele Mulonda Hercule
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Fan Lv
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Qinqin Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Xiujuan Wei
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P.R. China
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26
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Zhang S, Kwon HM, Li Z, Ikoma A, Dokko K, Watanabe M. Nitrogen-Doped Inverse Opal Carbons Derived from an Ionic Liquid Precursor for the Oxygen Reduction Reaction. ChemElectroChem 2015. [DOI: 10.1002/celc.201500129] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Bhirud AP, Sathaye SD, Waichal RP, Ambekar JD, Park CJ, Kale BB. In-situ preparation of N-TiO2/graphene nanocomposite and its enhanced photocatalytic hydrogen production by H2S splitting under solar light. NANOSCALE 2015; 7:5023-5034. [PMID: 25697910 DOI: 10.1039/c4nr06435f] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Highly monodispersed nitrogen doped TiO2 nanoparticles were successfully deposited on graphene (N-TiO2/Gr) by a facile in-situ wet chemical method for the first time. N-TiO2/Gr has been further used for photocatalytic hydrogen production using a naturally occurring abundant source of energy i.e. solar light. The N-TiO2/Gr nanocomposite composition was optimized by varying the concentrations of dopant nitrogen and graphene (using various concentrations of graphene) for utmost hydrogen production. The structural, optical and morphological aspects of nanocomposites were studied using XRD, UV-DRS, Raman, XPS, FESEM, and TEM. The structural study of the nanocomposite shows existence of anatase N-TiO2. Further, the details of the components present in the composition were confirmed with Raman and XPS. The morphological study shows that very tiny, 7-10 nm sized, N-TiO2 nanoparticles are deposited on the graphene sheet. The optical study reveals a drastic change in absorption edge and consequent total absorption due to nitrogen doping and presence of graphene. Considering the extended absorption edge to the visible region, these nanocomposites were further used as a photocatalyst to transform hazardous H2S waste into eco-friendly hydrogen using solar light. The N-TiO2/Gr nanocomposite with 2% graphene exhibits enhanced photocatalytic stable hydrogen production i.e. ∼5941 μmol h(-1) under solar light irradiation using just 0.2 gm nanocomposite, which is much higher as compared to P25, undoped TiO2 and TiO2/Gr nanocomposite. The enhancement in the photocatalytic activity is attributed to 'N' doping as well as high specific surface area and charge carrier ability of graphene. The recycling of the photocatalyst shows a good stability of the nanocomposites. This work may provide new insights to design other semiconductor deposited graphene novel nanocomposites as a visible light active photocatalyst.
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Affiliation(s)
- Ashwini P Bhirud
- Centre for Materials for Electronic Technology, Panchawati, Off Pashan Road, Pune 411008, India.
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28
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Design and synthesis of three-dimensional hierarchical ordered porous carbons for supercapacitors. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.12.052] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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29
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Chang B, Yang B, Guo Y, Wang Y, Dong X. Preparation and enhanced supercapacitance performance of porous carbon spheres with a high degree of graphitization. RSC Adv 2015. [DOI: 10.1039/c4ra09204j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper describes the preparation of graphitic porous carbon spheres (GPCS) from spherical resorcinol/formaldehyde resin by Fe-catalysis at 900 °C.
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Affiliation(s)
- Binbin Chang
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
| | - Baocheng Yang
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
| | - Yanzhen Guo
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
| | - Yiliang Wang
- Department of Chemistry
- School of Sciences
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xiaoping Dong
- Department of Chemistry
- School of Sciences
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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30
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Chang B, Guo Y, Li Y, Yang B. Hierarchical porous carbon derived from recycled waste filter paper as high-performance supercapacitor electrodes. RSC Adv 2015. [DOI: 10.1039/c5ra12651g] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hierarchical activated porous carbon (APC) was synthesized through convenient chemical activation with ZnCl2 using recycled waste filter paper as the carbon precursor.
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Affiliation(s)
- Binbin Chang
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
| | - Yanzhen Guo
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
| | - Yanchun Li
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
| | - Baocheng Yang
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
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31
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Phosphine- and ammonium-functionalized ordered mesoporous carbons as supports for cluster-derived metal nanoparticles. Catal Today 2014. [DOI: 10.1016/j.cattod.2014.03.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Zhang L, Wang Y, Kan G, Zhang Z, Wang C, Zhong Z, Su F. Scalable synthesis of porous silicon/carbon microspheres as improved anode materials for Li-ion batteries. RSC Adv 2014. [DOI: 10.1039/c4ra04997g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Yan L, Bo X, Zhang Y, Guo L. Facile green synthesis of nitrogen-doped porous carbon and its use for electrocatalysis towards nitrobenzene and hydrazine. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.06.076] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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Wang S, Zhang L, Han F, Li WC, Xu YY, Qu WH, Lu AH. Diaminohexane-assisted preparation of coral-like, poly(benzoxazine)-based porous carbons for electrochemical energy storage. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11101-11109. [PMID: 24988541 DOI: 10.1021/am5034796] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The assembly of commercial silica colloids in the presence of 1,6-diaminohexane and their subsequent encapsulation by poly(benzoxazine) have been used to produce coral-like porous carbons. The pyrolysis of the polymer followed by the removal of the silica produces a carbon with a continuous skeleton that contains spherical medium-size pores as "reservoirs" with a structure similar to a bunch of grapes. The total volume and the diameter of the "reservoir" pores are tunable. The coral-like morphology and the pore structure of the carbons make them suitable for use as electrode materials for supercapacitors and lithium-ion batteries. As supercapacitor electrodes, they exhibit excellent long-term cycle stability (almost no capacitance fading after 20,000 cycles at a current density of 1 A g(-1)) and good rate capability with capacitance retention of 88% (from 0.1 A g(-1) to 5 A g(-1)). Meanwhile, as a matrix for the encapsulation of SnO2 nanoparticles for Li-ion storage, the electrodes also show a high specific capacity and good cycling stability, i.e., 900 mA h g(-1) after 50 charge-discharge cycles. The good electrochemical performance of such carbons shows that they are promising candidate electrode materials for electrochemical energy storage.
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Affiliation(s)
- Shuai Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology , Dalian 116024, People's Republic of China
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Fabrication and Characterization of Inorganic Silver and Palladium Nanostructures within Hexagonal Cylindrical Channels of Mesoporous Carbon. Polymers (Basel) 2014. [DOI: 10.3390/polym6061794] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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Shao B, Taniguchi I. Synthesis of Li2MnSiO4/C nanocomposites for lithium battery cathode employing sucrose as carbon source. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.09.051] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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A sensor based on graphitic mesoporous carbon/ionic liquids composite film for simultaneous determination of hydroquinone and catechol. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.07.177] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Kim OH, Cho YH, Kang SH, Park HY, Kim M, Lim JW, Chung DY, Lee MJ, Choe H, Sung YE. Ordered macroporous platinum electrode and enhanced mass transfer in fuel cells using inverse opal structure. Nat Commun 2013; 4:2473. [DOI: 10.1038/ncomms3473] [Citation(s) in RCA: 197] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Accepted: 08/20/2013] [Indexed: 11/09/2022] Open
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39
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Bai X, Hu X, Zhou S, Yan J, Sun C, Chen P, Li L. 3D flowerlike poly(3,4-ethylenedioxythiophene) for high electrochemical capacitive energy storage. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.05.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Shang M, Wang W, Sun S, Gao E, Zhang Z, Zhang L, O'Hayre R. The design and realization of a large-area flexible nanofiber-based mat for pollutant degradation: an application in photocatalysis. NANOSCALE 2013; 5:5036-5042. [PMID: 23640283 DOI: 10.1039/c3nr00503h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This work demonstrates a novel multifunctional nanofibrous mat for photocatalytic applications based on TiO2 nanocables functionalized by Ag nanoparticles and coated with a thin (~2 nm) graphitic shell. In this mat, which was realized by an electrospinning technique, each component serves a unique function: the carbon coating acts as both an adsorption material for capturing pollutants and as a charge-transfer material, the Ag nanoparticles act as a visible-light sensitizing agent and also as a charge-transfer material, finally the TiO2 nanocable mat acts as a UV sensitive photocatalytic matrix and as the flexible substrate for the other functional components. This multicomponent nanocable mat exhibits excellent photocatalytic activity under simulated solar irradiation for the degradation of model pollutants including RhB and phenol. The significant photocatalytic properties are attributed to the synergetic effect of the three functional components and the unique charge transport "freeway" property of the nanofibrous mat. In addition, the porous carbon coating infiltrated into the nanocable matrix endows the mat with excellent flexibility and enables robust, large-area (10 × 10 cm) fabrication, representing a significant advantage over previous brittle ceramic nanofibrous mat photocatalyst substrates. This study provides new insight into the design and preparation of an advanced, yet commercially practical and scaleable photocatalytic composite membrane material. The as-prepared photocatalytic mat might also be of interest in solar cell, catalysis, separation technology, biomedical engineering, and nanotechnology.
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Affiliation(s)
- Meng Shang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China
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Kim MS, Bhattacharjya D, Fang B, Yang DS, Bae TS, Yu JS. Morphology-dependent Li storage performance of ordered mesoporous carbon as anode material. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6754-61. [PMID: 23688326 DOI: 10.1021/la401150t] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Rod-shaped ordered mesoporous carbons (OMCs) with different lengths, prepared by replication method using the corresponding size-tunable SBA-15 silicas with the same rodlike morphology as templates, are explored as anode material for Li-ion battery. All of the as-synthesized OMCs exhibit much higher Li storage capacity and better cyclability along with comparable rate capability as compared with commercial graphite. Particularly, the OMC-3 with the shortest length demonstrates the highest reversible discharge capacity of 1012 mAh g(-1) at 100 mA g(-1) and better cyclability with 86.6% retention of initial capacity after 100 cycles. Although the Coulombic efficiencies of all the OMCs are relatively low at the beginning, they improve promptly and after 10 cycles reach the level comparable to commercial graphite. Based on their specific capacity, cycle efficiency, and rate capability, the OMC-3 outperforms considerably its carbon peers, OMC-1 and OMC-2 with longer length. This behavior is mainly attributed to higher specific surface area, which provides more active sites for Li adsorption and storage along with the larger mesopore volume and shorter mesopore channels, which facilitate fast Li ion diffusion and electrolyte transport. The enhancement in reversible Li storage performance with decrease in the channel length is also supported by low solid electrolyte interphase resistance, contact resistance, and Warburg impedance in electrochemical impedance spectroscopy.
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Affiliation(s)
- Min-Sik Kim
- Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, Republic of Korea
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Mondal K, Kumar J, Sharma A. Self-organized macroporous thin carbon films for supported metal catalysis. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.03.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Mondal K, Kumar J, Sharma A. TiO2-nanoparticles-impregnated photocatalytic macroporous carbon films by spin coating. ACTA ACUST UNITED AC 2013. [DOI: 10.1680/nme.12.00034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Zhou G, Wang DW, Li L, Li N, Li F, Cheng HM. Nanosize SnO₂ confined in the porous shells of carbon cages for kinetically efficient and long-term lithium storage. NANOSCALE 2013; 5:1576-1582. [PMID: 23329149 DOI: 10.1039/c2nr33482h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We explore a hybrid material consisting of SnO(2) nanoparticles (NPs) embedded in the porous shells of carbon cages (SnO(2)-PSCC). The hybrid material exhibits improved kinetics of lithiation-delithiation and high reversible capacity, and excellent cyclic stability without capacity loss over 100 cycles at 500 mA g(-1) with a coulombic efficiency close to 100% after the initial cycle. This can be ascribed to the high electrical conductivity, the hierarchical porosity and the confinement effect of the PSCC on the volume change of SnO(2) NPs. The material has a large reversible capacity of 460 mA h g(-1) at a high current density of 5 A g(-1) due to a short ion diffusion length in the bulk and large number of inter-pore ion transport channels. These results provide insight into improving the lithium storage performance of SnO(2) by facilitating the reaction kinetics and indicate that this hybrid material has great potential for use in high-rate and durable lithium ion batteries.
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Affiliation(s)
- Guangmin Zhou
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
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Cong H, Yu B, Tang J, Li Z, Liu X. Current status and future developments in preparation and application of colloidal crystals. Chem Soc Rev 2013; 42:7774-800. [DOI: 10.1039/c3cs60078e] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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46
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Bae JW, Park JN. Fabrication of Carbon Microcapsules Containing Silicon Nanoparticles-Carbon Nanotubes Nanocomposite for Anode in Lithium Ion Battery. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.9.3025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nishihara H, Kyotani T. Templated nanocarbons for energy storage. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:4473-4498. [PMID: 22806880 DOI: 10.1002/adma.201201715] [Citation(s) in RCA: 287] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Indexed: 06/01/2023]
Abstract
The template carbonization method is a powerful tool for producing carbon materials with precisely controlled structures at the nanometer level. The resulting templated nanocarbons exhibit extraordinarily unique (often ordered) structures that could never be produced by any of the conventional methods for carbon production. This review summarizes recent publications about templated nanocarbons and their composites used for energy storage applications, including hydrogen storage, electrochemical capacitors, and lithium-ion batteries. The main objective of this review is to clarify the true significance of the templated nanocarbons for each application. For this purpose, the performance characteristics of almost all templated nanocarbons reported thus far are listed and compared with those of conventional materials, so that the advantages/disadvantages of the templated nanocarbons are elucidated. From the practical point of view, the high production cost and poor mass-producibility of the templated nanocarbons make them rather difficult to utilize; however, the study of their unique, specific, and ordered structures enables a deeper insight into energy storage mechanisms and the guidelines for developing energy storage materials. Thus, another important purpose of this work is to establish such general guidelines and to propose future strategies for the production of carbon materials with improved performance for energy storage applications.
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Affiliation(s)
- Hirotomo Nishihara
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.
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Xie Y, Liu Y, Wang Y, Wang S, Jiang T. Chitosan matrix with three dimensionally ordered macroporous structure for nimodipine release. Carbohydr Polym 2012; 90:1648-55. [PMID: 22944429 DOI: 10.1016/j.carbpol.2012.07.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 07/12/2012] [Accepted: 07/18/2012] [Indexed: 11/26/2022]
Abstract
Three dimensionally ordered macroporous (3DOM) chitosan (3D-CS) matrix with interconnected pores in the nanometer range was developed as a drug carrier for the first time. 3D-CS was prepared using a template-assisted assembly and characterized by SEM, TGA, N(2) adsorption and FT-IR. As a model drug, nimodipine (NMDP) was incorporated into the pores of 3D-CS matrix. The solid state properties of NMDP-loaded samples were characterized by SEM, XRD, DSC and FT-IR. Dissolution studies showed that release behavior of the drug was markedly affected by the particle size of the matrix. With a relatively small matrix particle size, formulations of NMDP-3D-CS-0.5 and NMDP-3D-CS-1 exhibited rapid release patterns. However, on increasing the amount of carrier, release rate of the drug decreased. The pH-dependent slow-release characteristic of 3D-CS matrix delivery system was demonstrated by investigating the release behavior of NMDP at different pH values.
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Affiliation(s)
- Yuling Xie
- Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
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Kim Y, Cho CY, Kang JH, Cho YS, Moon JH. Synthesis of porous carbon balls from spherical colloidal crystal templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10543-10550. [PMID: 22769243 DOI: 10.1021/la3021468] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Spherical inverse opal (IO) porous carbon was produced utilizing silica colloidal crystal spheres as templates. The spherical colloidal crystals were obtained through the self-assembly of monodisperse particles inside an emulsion droplet with confined geometry. The templates were inverted using a carbon precursor, phenol-formaldehyde (PF) resol. We demonstrated a two-step synthesis involving the subsequent infiltration of the PF resol precursor into the spherical colloidal crystal template and a one-step synthesis using a silica colloidal solution containing dissolved PF resol. In the former case, the sizes of the IO carbon balls were controlled by the size of the colloidal crystal templates, and diameters of a few micrometers up to 50 μm were obtained. The average diameter of the macropores created by the silica particles was 230 nm. Moreover, meso-/macroporous IO carbon balls were created using block-copolymer templates in the PF resol. In the one-step synthesis, the concentration of PF resol in the colloidal solution controlled the diameter of the IO carbon balls. IO balls smaller than 3 μm were obtained from the direct addition of 5% PF resol. The one-step synthesis produced rather irregular porous structures reflecting the less ordered crystallization processes inside the spherical colloidal crystals. Nitrogen adsorption and cyclic voltammetry measurements were conducted to measure the specific area and electroactive surface area of the IO carbon balls. The specific area of the mesopores-incorporated IO carbon balls was 1.3 times higher than that of bare IO carbon balls. Accordingly, the meso-/macroporous porous carbon balls exhibited higher electrocatalytic properties than the macroporous carbon balls.
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Affiliation(s)
- Youngchan Kim
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, Republic of Korea
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Huang CH, Zhang Q, Chou TC, Chen CM, Su DS, Doong RA. Three-dimensional hierarchically ordered porous carbons with partially graphitic nanostructures for electrochemical capacitive energy storage. CHEMSUSCHEM 2012; 5:563-571. [PMID: 22383382 DOI: 10.1002/cssc.201100618] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 12/07/2011] [Indexed: 05/31/2023]
Abstract
Three-dimensional, hierarchically ordered, porous carbon (HOPC) with designed porous textures, serving as an ion-buffering reservoir, an ion-transport channel, and a charge-storage material, is expected to be advanced an energy material for high-rate supercapacitors. Herein, HOPC without/with partially graphitic nanostructures have been directly synthesized by means of a simple one-pot synthesis procedure. The designed porous textures of the 3D HOPC materials are composed of highly ordered, fcc macroporous (300 nm), interconnected porous structures, including macroporous windows (170 nm), hexagonally ordered mesopores (5.0 nm), and useful micropores (1.2 nm). 3D HOPC-g-1000 (g=graphitic, 1000=pyrolysis temperature of 1000 °C) with partially graphitic nanostructures has a low specific surface area (296 m(2) g(-1)) and a low gravimetric specific capacitance (73.4 F g(-1) at 3 mV s(-1)), but improved electrical conductivity, better rate performance, higher electrolyte accessibility (24.8 μF cm(-2) at 3 mV s(-1)), faster frequency response (≈1 Hz), and excellent cycling performance (>5400 cycles). The specific capacitance per surface area is higher than that of conventional porous carbons, carbon nanotubes, and modified graphene (10-19 μF cm(-2)).
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Affiliation(s)
- Chun-Hsien Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu, Taiwan
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