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Bandas C, Nicolaescu M, Popescu MI, Orha C, Căprărescu S, Lazau C. One-Step Microwave-Assisted Hydrothermal Preparation of Zn-ZnO(Nw)-rGO Electrodes for Supercapacitor Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4536. [PMID: 37444850 DOI: 10.3390/ma16134536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023]
Abstract
Zn-ZnO(Nw)-rGO hybrid electrodes for supercapacitor applications were successfully prepared in situ by a one-step microwave-assisted hydrothermal method by deposition of reduced graphene oxide (rGO) on the structure of ZnO nanowires grown on the Zn foil. During the hydrothermal treatment, two processes occur the reduction of graphene oxide (GO) and the deposition of rGO on the Zn-ZnO(Nw) support. The growth of ZnO nanowires was achieved by thermal oxidation below the melting point of the Zn foil in a controlled atmosphere. The as-obtained electrodes were assessed for structural, optical, and morphological properties by X-ray diffraction, Raman spectroscopy, ultraviolet-visible spectroscopy, SEM microscopy, and EDX analysis. The supercapacitor properties of the Zn-ZnO(Nw)-rGO hybrid electrodes were investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge-discharge analysis. The CV curve reveals that the Zn-ZnO(Nw)-rGO hybrid structures work as negative electrodes and exhibit a non-ideal rectangle-like shape, suggesting that the as-synthesized structure behaves as a pseudo-capacitor. A maximum capacitance was determined to be 395.79 mF cm-2 at a scan rate of 5 mV s-1. Based on GCD analysis, the maximum specific capacitance of 145.59 mF cm-2 was achieved at a low power density of 2 mA cm-2. The cycle life assessment of the Zn-ZnO(Nw)-rGO hybrid electrode over a 250-cycle number was performed by CV and GCD analysis. The maximum retention rate of 120.86% was achieved from GCD analysis over 250 cycles for the Zn-ZnO(Nw)-rGO hybrid electrode.
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Affiliation(s)
- Cornelia Bandas
- Condensed Matter Department, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, 1 Plautius Andronescu Street, 300254 Timisoara, Romania
| | - Mircea Nicolaescu
- Condensed Matter Department, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, 1 Plautius Andronescu Street, 300254 Timisoara, Romania
- Department of Materials and Manufacturing Engineering, Faculty of Mechanical Engineering, Politehnica University of Timisoara Mihai Viteazu 1, 300222 Timisoara, Romania
| | - Mina Ionela Popescu
- Condensed Matter Department, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, 1 Plautius Andronescu Street, 300254 Timisoara, Romania
- Department of Applied Chemistry and Engineering of Inorganic Compounds and Environment, Politehnica University of Timisoara, Blv. Vasile Parvan 6, 300223 Timisoara, Romania
| | - Corina Orha
- Condensed Matter Department, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, 1 Plautius Andronescu Street, 300254 Timisoara, Romania
| | - Simona Căprărescu
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, University "Politehnica" of Bucharest, Polizu Street No. 1-7, 011061 Bucharest, Romania
| | - Carmen Lazau
- Condensed Matter Department, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, 1 Plautius Andronescu Street, 300254 Timisoara, Romania
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Nicolaescu M, Vajda M, Lazau C, Orha C, Bandas C, Serban VA, Codrean C. Fabrication of Flexible Supercapacitor Electrode Materials by Chemical Oxidation of Iron-Based Amorphous Ribbons. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2820. [PMID: 37049115 PMCID: PMC10096379 DOI: 10.3390/ma16072820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/23/2023] [Accepted: 03/30/2023] [Indexed: 06/19/2023]
Abstract
A flexible electrode constructed from Fe-based amorphous ribbons decorated with nanostructured iron oxides, representing the novelty of this research, was successfully achieved in one-step via a chemical oxidation method, using a low concentration of NaOH solution. The growth of metal oxides on a conductive substrate, which forms some metal/oxide structure, has been demonstrated to be an efficient method for increasing the charge transfer efficiency. Through the control and variation of synthetic parameters, different structures and morphologies of iron oxide were obtained, including hexagonal structures with a hollow ball shape and rhombohedral structures with rhombus-like shapes. Structural and morphological characterization methods such as X-ray diffraction and SEM morphology were used on the as-synthesized composite materials. The supercapacitor properties of the as-developed amorphous ribbons decorated with Fe2O3 nanoparticles were investigated by cyclic voltammetry, galvanostatic charge discharge, and electrochemical impedance spectroscopy. The flexible supercapacitor negative electrode demonstrates a specific capacitance of 5.96 F g-1 for the 0.2 M NaOH treated sample and 8.94 Fg-1 for the 0.4 M NaOH treated sample. The 0.2 M treated negative electrodes deliver 0.48 Wh/kg at a power density of 20.11 W/kg, and the 0.4 M treated electrode delivers 0.61 Wh/kg at a power density of 20.85 W/kg. The above results show that these flexible electrodes are adequate for integration in supercapacitor devices, for example, as negative electrodes.
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Affiliation(s)
- Mircea Nicolaescu
- Department of Materials and Manufacturing Engineering, Faculty of Mechanical Engineering, Politehnica University Timisoara, Mihai Viteazu 1, 300222 Timisoara, Romania; (M.N.); (V.-A.S.)
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timisoara, Romania; (M.V.); (C.L.); (C.O.); (C.B.)
| | - Melinda Vajda
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timisoara, Romania; (M.V.); (C.L.); (C.O.); (C.B.)
- Department of Applied Chemistry and Engineering of Inorganic Compounds and Environment, Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Piata Victoriei 2, 300006 Timisoara, Romania
| | - Carmen Lazau
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timisoara, Romania; (M.V.); (C.L.); (C.O.); (C.B.)
| | - Corina Orha
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timisoara, Romania; (M.V.); (C.L.); (C.O.); (C.B.)
| | - Cornelia Bandas
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timisoara, Romania; (M.V.); (C.L.); (C.O.); (C.B.)
| | - Viorel-Aurel Serban
- Department of Materials and Manufacturing Engineering, Faculty of Mechanical Engineering, Politehnica University Timisoara, Mihai Viteazu 1, 300222 Timisoara, Romania; (M.N.); (V.-A.S.)
| | - Cosmin Codrean
- Department of Materials and Manufacturing Engineering, Faculty of Mechanical Engineering, Politehnica University Timisoara, Mihai Viteazu 1, 300222 Timisoara, Romania; (M.N.); (V.-A.S.)
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Tian S, Zhang B, Han D, Gong Z, Li X. Fe 2O 3/Porous Carbon Composite Derived from Oily Sludge Waste as an Advanced Anode Material for Supercapacitor Application. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3819. [PMID: 36364595 PMCID: PMC9656837 DOI: 10.3390/nano12213819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/19/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
It is urgent to improve the electrochemical performance of anode for supercapacitors. Herein, we successfully prepare Fe2O3/porous carbon composite materials (FPC) through hydrothermal strategies by using oily sludge waste. The hierarchical porous carbon (HPC) substrate and fine loading of Fe2O3 nanorods are all important for the electrochemical performance. The HPC substrate could not only promote the surface capacitance effect but also improve the utilization efficiency of Fe2O3 to enhance the pseudo-capacitance. The smaller and uniform Fe2O3 loading is also beneficial to optimize the pore structure of the electrode and enlarge the interface for faradaic reactions. The as-prepared FPC shows a high specific capacitance of 465 F g-1 at 0.5 A g-1, good rate capability of 66.5% retention at 20 A g-1, and long cycling stability of 88.4% retention at 5 A g-1 after 4000 cycles. In addition, an asymmetric supercapacitor device (ASC) constructed with FPC as the anode and MnO2/porous carbon composite (MPC) as the cathode shows an excellent power density of 72.3 W h kg-1 at the corresponding power density of 500 W kg-1 with long-term cycling stability. Owing to the outstanding electrochemical characteristics and cycling performance, the associated materials' design concept from oily sludge waste has large potential in energy storage applications and environmental protection.
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Affiliation(s)
- Shubing Tian
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Baoling Zhang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Dong Han
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhiqiang Gong
- State Grid Shandong Electric Power Research Institute, Jinan 250003, China
| | - Xiaoyu Li
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
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Xia Q, Xia T, Dai M, Wu X, Zhao Y. A facile synthetic protocol of α-Fe2O3@FeS2 nanocrystals for advanced electrochemical capacitors. CrystEngComm 2021. [DOI: 10.1039/d1ce00044f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In this work, we report granular α-Fe2O3@FeS2 nanocrystals by a one-pot hydrothermal route. The as-obtained product as an electrode material shows excellent charge transfer ability and cyclic stability.
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Affiliation(s)
- Qing Xia
- School of Materials Science and Engineering
- Shenyang University of Technology
- Shenyang 110870
- P. R. China
| | - Tong Xia
- School of Materials Science and Engineering
- Shenyang University of Technology
- Shenyang 110870
- P. R. China
| | - Meizhen Dai
- School of Materials Science and Engineering
- Shenyang University of Technology
- Shenyang 110870
- P. R. China
| | - Xiang Wu
- School of Materials Science and Engineering
- Shenyang University of Technology
- Shenyang 110870
- P. R. China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Yufeng Zhao
- Institute for Sustainable Energy/College of Science
- Shanghai University
- Shanghai
- P. R. China
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Yu P, Duan W, Jiang Y. Porous Fe 2O 3 Nanorods on Hierarchical Porous Biomass Carbon as Advanced Anode for High-Energy-Density Asymmetric Supercapacitors. Front Chem 2020; 8:611852. [PMID: 33324617 PMCID: PMC7726331 DOI: 10.3389/fchem.2020.611852] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 10/20/2020] [Indexed: 12/04/2022] Open
Abstract
In this study, a novel negative electrode material was prepared by aligning α-Fe2O3 nanorods on a hierarchical porous carbon (HPC) skeleton. The skeleton was derived from wheat flour by a facile hydrothermal route to enhance conductivity, improve surface properties, and achieve substantially good electrochemical performances. The α-Fe2O3/HPC electrode exhibits enhanced specific capacitance of 706 F g−1, which is twice higher than that of α-Fe2O3. The advanced α-Fe2O3/HPC//PANI/HPC asymmetrical supercapacitor was built with an expanded voltage of 2.0 V in 1 M Li2SO4, possessing a specific capacitance of 212 F g−1 at 1 A g−1 and a maximum energy density of 117 Wh kg−1 at 1.0 kW kg−1, along with an excellent stability of 5.8% decay in capacitance after 5,000 cycles. This study affords a simple process to develop asymmetric supercapacitors, which exhibit high electrochemical performances and are applicable in next-generation energy storage devices, based on α-Fe2O3 hybrid materials.
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Affiliation(s)
- Pingping Yu
- Department of Electronic Engineering, College of Internet-of-Things (IoT), Jiangnan University, Wuxi, China
| | - Wei Duan
- Department of Electronic Engineering, College of Internet-of-Things (IoT), Jiangnan University, Wuxi, China
| | - Yanfeng Jiang
- Department of Electronic Engineering, College of Internet-of-Things (IoT), Jiangnan University, Wuxi, China
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Research progress on transition metal oxide based electrode materials for asymmetric hybrid capacitors. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.02.017] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Preparation and Electrochemical Properties of Co3O4 Supercapacitor Electrode Materials. CRYSTALS 2020. [DOI: 10.3390/cryst10090720] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A special gas-phase diffusion precipitation method with ammonia as the gas-phase diffusion precipitant was adopted. After fully reacting with different cobalt sources in a sealed space, the liquid funnel was separated and dried, and calcined at different temperatures for 2 h. The prepared Co3O4 powder was used as a supercapacitor (SCs) electrode to measure the electrochemical properties of the prepared material. The influences of different cobalt sources and sodium phosphate monobasic dehydrate on the preparation of Co3O4 SCs electrodes were investigated. The optimal performance of Co3O4 was 640 F·g−1 before modification, and this reached 1140 F·g−1 after modification, which was an improvement of 78.1%.
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Zhang J, Chen L, Wang Y, Cai S, Peng Y, Yang H, Yu H, Ding F, Huang C, Liu X. VO₂(B)/Graphene Composite-Based Symmetrical Supercapacitor Electrode via Screen Printing for Intelligent Packaging. NANOMATERIALS 2018; 8:nano8121020. [PMID: 30544509 PMCID: PMC6316682 DOI: 10.3390/nano8121020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/23/2018] [Accepted: 12/04/2018] [Indexed: 12/31/2022]
Abstract
More multipurpose and convenient demand driven by Radio Frequency Identification (RFID) and intelligent packaging require flexible power sources. A VO2(B)/graphene (VO2(B)/GN) core-shell composite was successfully synthesized by the hydrothermal treatment with V2O5 and graphite. The as-obtained sample was characterized by XRD, FT-IR, SEM, TEM, and XPS measurements. In addition, the electrochemical properties of VO2(B)/GN were tested. Due to its great electrochemical performance and mechanical properties, graphene could increase the electrochemical performance and strengthen the structural stability of the material at the same time. With increasing loading amount of GN, the specific capacitance of VO2(B)/GN increased correspondingly. With 20% GN loading, the initial discharge specific capacity could reach 197 F g−1 at 0.5 A g−1, and 160 F g−1 at 1 A g−1 in 0.5 M Na2SO4 electrolyte, which is better than that of pure rod-like VO2(B). The capacitance of the VO2(B)/GN (20%) composite electrode retains 95.49% after 1000 cycles, which is higher than that of a pure VO2(B) electrode (85.43%), indicating that the VO2(B)/GN composite possesses better cycling stability. Moreover, a symmetrical solid-state supercapacitor (SCs) using VO2(B)/GN(20%) as the anode was assembled. Four printed SCs were connected in series to light up a 1.5 V red LED. This demonstrates its potential application in intelligent packaging to trace food safety.
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Affiliation(s)
- Jieyu Zhang
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Liangzhe Chen
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Yixiang Wang
- Department of Food Science and Agriculture Chemistry, McGill University, 21111 Lakeshore, Ste Anne de Bellevue, Quebec, QC H9X3V9, Canada.
| | - Shaoyong Cai
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Yaqianzi Peng
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Huijun Yang
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Hao Yu
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Fuyuan Ding
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Chi Huang
- College of Chemistry and Molecular Sciences, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
| | - Xinghai Liu
- School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China.
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Lu Y, Dong W, Wang W, Ding J, Wang Q, Hui A, Wang A. Optimal Synthesis of Environment-Friendly Iron Red Pigment from Natural Nanostructured Clay Minerals. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E925. [PMID: 30413010 PMCID: PMC6266117 DOI: 10.3390/nano8110925] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/04/2018] [Accepted: 11/05/2018] [Indexed: 11/26/2022]
Abstract
A series of environment-friendly clay minerals-α-Fe₂O₃ iron-red hybrid pigments-were prepared by a simple one-step hydrothermal reaction process using natural nanostructured silicate clay minerals as starting materials. The influence of structure, morphology and composition of different clay minerals on the structure, color properties, and stability of the pigments was studied comparatively by systematic structure characterizations with X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmittance electron microscope (TEM), X-ray fluorescence spectroscopy (XRF), X-ray photoelectron spectroscopy (XPS) and CIE-L*a*b* Colorimetric analyses. The results showed that the clay minerals act as green precipitants during the hydrothermal reaction to induce in-situ transformation of Fe(III) ions into Fe₂O₃ crystals. Meanwhile, they also act as the "micro-reactor" for forming Fe₂O₃ crystals and the supporter for inhibiting the aggregation of Fe₂O₃ nanoparticles. The color properties of iron-red hybrid pigments are closely related to the surface charges, surface silanol groups, and solid acid sites of clay minerals. The clay minerals with higher surface activity are more suitable to prepare iron-red pigments with better performance. The iron-red hybrid pigment derived from illite (ILL) clay showed the best red color performance with the color values of L* = 31.8, a* = 35.2, b* = 27.1, C* = 44.4 and h° = 37.6, and exhibited excellent stability in different chemical environments such as acid, alkaline, and also in high-temperature conditions.
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Affiliation(s)
- Yushen Lu
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- University of the Chinese Academy of Sciences, Beijing 100049, China.
| | - Wenkai Dong
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- University of the Chinese Academy of Sciences, Beijing 100049, China.
| | - Wenbo Wang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, China.
| | - Junjie Ding
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Qin Wang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, China.
| | - Aiping Hui
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, China.
| | - Aiqin Wang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, China.
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