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Liang M, Ren Y, Cui J, Zhang X, Xing S, Lei J, He M, Xie H, Deng L, Yu F, Ma J. Order-in-disordered ultrathin carbon nanostructure with nitrogen-rich defects bridged by pseudographitic domains for high-performance ion capture. Nat Commun 2024; 15:6437. [PMID: 39085264 PMCID: PMC11291722 DOI: 10.1038/s41467-024-50899-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 07/24/2024] [Indexed: 08/02/2024] Open
Abstract
Carbon materials with defect-rich structure are highly demanded for various electrochemical scenes, but encountering a conflict with the deteriorative intrinsic conductivity. Herein, we build a highway-mediated nanoarchitecture that consists of the ordered pseudographitic nanodomains among disordered highly nitrogen-doped segments through a supramolecular self-assembly strategy. The "order-in-disorder" nanosheet-like carbon obtained at 800 °C (O/D NSLC-800) achieves a tradeoff with high defect degree (21.9 at% of doped nitrogen) and compensated electrical conductivity simultaneously. As expected, symmetrical O/D NSLC-800 electrodes exhibit superior capacitive deionization (CDI) performance, including brackish water desalination (≈82 mgNaCl g-1 at a cell voltage of 1.6 V in a 1000 mg L-1 NaCl solution) and reusage of actual refining circulating cooling water, outperforming most of the reported state-of-the-art CDI electrodes. The implanted pseudographitic nanodomains lower the resistance and activation energy of charge transfer, which motivates the synergy of hosting sites of multiple nitrogen configurations. Our findings shed light on electrically conductive nanoarchitecture design of defect-rich materials for advanced electrochemical applications based on molecular-level modulation.
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Affiliation(s)
- Mingxing Liang
- Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
- School of Civil Engineering, Kashi University, Kashi, 844000, PR China
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, PR China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Yifan Ren
- Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
| | - Jun Cui
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Xiaochen Zhang
- Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, PR China
| | - Siyang Xing
- Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
- Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Jingjing Lei
- Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
| | - Mengyao He
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co., Ltd., Hangzhou, 310003, PR China
| | - Libo Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Fei Yu
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, PR China
| | - Jie Ma
- Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
- School of Civil Engineering, Kashi University, Kashi, 844000, PR China.
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2
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Wei D, Ouyang B, Cao Y, Yan L, Wu B, Chen P, Zhang T, Jiang Y, Wang H. Coordination Confined Silver-Organic Framework for High Performance Electrochemical Deionization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401174. [PMID: 38696650 PMCID: PMC11267271 DOI: 10.1002/advs.202401174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/14/2024] [Indexed: 05/04/2024]
Abstract
Silver (Ag) is deemed a promising anode material for capacitive deionization (CDI) due to its high theoretical capacity and efficient selectivity to Cl-. However, the strong volume change during the conversion reaction significantly undermines the cycling performance of the Ag electrode. Additionally, achieving well-dispersed Ag in the active matrix is challenging, as Ag electrodes prepared by conventional thermal reduction tend to agglomerate. Herein, the organic linker confinement strategy is proposed, applying metal-organic framework (MOF) chemistry between Ag nodes and organic ligands to construct Ag-based MOF. The uniform dispersion of Ag at the molecular level, confined in the organic matrix, efficiently enhances the utilization of active sites, and strengthens the interfacial stability of Ag. Consequently, the Ag-MOF for the CDI anode exhibits an excellent Cl- removal capacity of 121.52 mg g-1 at 20 mA g-1 in 500 mg L-1 NaCl solution, and a high Ag utilization rate of 60.54%. After 100 cycles, a capacity retention of 96.93% is achieved. Furthermore, the Cl- capture mechanism of Ag-MOF is elucidated through density functional theory (DFT) calculations, ex situ XRD, ex situ Raman and XPS. This ingenious electrode design can offer valuable insights for the development of high-performance conversion electrodes for CDI applications.
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Affiliation(s)
- Dun Wei
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Baixue Ouyang
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Yiyun Cao
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Lvji Yan
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Bichao Wu
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Peng Chen
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Tingzheng Zhang
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Yuxin Jiang
- College of Environmental Science and EngineeringCentral South University of Forestry and TechnologyChangsha410004China
- Faculty of Life Science and TechnologyCentral South University of Forestry and TechnologyChangsha410004China
| | - Haiying Wang
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal PollutionCentral South UniversityChangsha410083China
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3
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Li XG, Chen J, Wang X, Rao L, Zhou R, Yu F, Ma J. Perspective into ion storage of pristine metal-organic frameworks in capacitive deionization. Adv Colloid Interface Sci 2024; 324:103092. [PMID: 38325008 DOI: 10.1016/j.cis.2024.103092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/05/2024] [Accepted: 01/21/2024] [Indexed: 02/09/2024]
Abstract
Metal-organic frameworks (MOFs), featuring tunable conductivity, tailored pore/structure and high surface area, have emerged as promising electrode nanomaterials for ion storage in capacitive deionization (CDI) and garnered tremendous attention in recent years. Despite the many advantages, the perspective from which MOFs should be designed and prepared for use as CDI electrode materials still faces various challenges that hinder their practical application. This summary proposes design principles for the pore size, pore environment, structure and dimensions of MOFs to precisely tailor the surface area, selectivity, conductivity, and Faradaic activity of electrode materials based on the ion storage mechanism in the CDI process. The account provides a new perspective to deepen the understanding of the fundamental issues of MOFs electrode materials to further meet the practical applications of CDI.
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Affiliation(s)
- Xin-Gui Li
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Jinfeng Chen
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Xinyu Wang
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Liangmei Rao
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Runhong Zhou
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Fei Yu
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, PR China
| | - Jie Ma
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; School of Civil Engineering, Kashi University, Kashi 844008, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
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4
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He R, Yu Y, Kong L, Liu X, Dong P. Capacitive deionization system with ultra-high salt adsorption performance: from lab design to agricultural applications. Chem Commun (Camb) 2023; 59:12376-12389. [PMID: 37753790 DOI: 10.1039/d3cc03206j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Capacitive deionization is an emerging water desalination technology for industrial applications. Recent advancements in electrode design and system development have led to the reporting of ultra-high salt adsorption performance, benefiting its potential application in agricultural water treatment at a potentially low cost. In this study, we provide a comprehensive summary of the porous electrode design strategy to achieve ultra-high ion adsorption performance, considering factors such as experimental parameters, chemically tuned material properties, redox chemistry and smart nanoarchitecture for future electrode design. Furthermore, we endeavor to establish a correlation between capacitive deionization (CDI) technology and its applicability in the agricultural sector, specifically concentrating on water treatment with an emphasis on undesirable ions associated with salinity, hardness, and heavy metals, to achieve harmless irrigation. Additionally, to ensure the efficient and cost-effective application of CDI systems in agriculture, a thorough overview of the literature on CDI cost analysis is presented. By addressing these aspects, we anticipate that ultra-high salt adsorption CDI systems hold great promise in future agricultural applications.
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Affiliation(s)
- Rui He
- Department of Mechanical Engineering, George Mason University, Fairfax, VA 22030, USA.
| | - Yongchang Yu
- Department of Civil and Environmental Engineering, George Washington University, Washington, D.C., 20052, USA.
| | - Lingchen Kong
- Department of Civil and Environmental Engineering, George Washington University, Washington, D.C., 20052, USA.
| | - Xitong Liu
- Department of Civil and Environmental Engineering, George Washington University, Washington, D.C., 20052, USA.
| | - Pei Dong
- Department of Mechanical Engineering, George Mason University, Fairfax, VA 22030, USA.
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Gang H, Deng H, Yan L, Wu B, Alhassan SI, Cao Y, Wei D, Wang H. Surface redox pseudocapacitance boosting Fe/Fe 3C nanoparticles-encapsulated N-doped graphene-like carbon for high-performance capacitive deionization. J Colloid Interface Sci 2023; 638:252-262. [PMID: 36738548 DOI: 10.1016/j.jcis.2023.01.093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/14/2023] [Accepted: 01/20/2023] [Indexed: 01/25/2023]
Abstract
The practical application of carbon anode in capacitive deionization (CDI) is greatly hindered by their poor adsorption capacity and co-ion effect. Herein, an N-doped graphene-like carbon (NC) decorated with Fe/Fe3C nanoparticles composite (Fe/Fe3C@NC) with large specific surface area and plentiful porosity is fabricated via a facile and scalable method, namely sol-gel method combined with Fe-catalyzed carbonization. As expected, it exhibits superior CDI performance as a Cl-storage electrode, with Cl- adsorption capacity as high as 102.3 mg g-1 at 1000 mg L-1 Cl- concentration and 1.4 V voltage, and a stable capacity of 68.5 mg g-1 for 60 cycles in 500 mg L-1 Cl- concentration and 100 mA g-1 current density. More importantly, on the basis of electrochemical tests, ex-situ X-ray diffraction, ex-situ X-ray photoelectron spectroscopy (XPS), and XPS analysis with argon ion depth etching, it is revealed that the chlorine storage mechanism of the Fe/Fe3C@NC electrode is dominated by the surface-related redox pseudocapacitance behavior of Fe2+/Fe3+ couple occurring on or near the surface, enabling fast and reversible ion storage. This work proposes an economical and environmentally friendly general method for the design and development of high-performance Cl-storage electrodes for CDI, and offers an in-depth insight into the Cl- storage mechanism of Fe decorated carbon electrodes, further promoting the development of CDI technology.
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Affiliation(s)
- Haiyin Gang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haoyu Deng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Lvji Yan
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Bichao Wu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Sikpaam Issaka Alhassan
- College of Engineering, Chemical and Environmental Engineering Department, University of Arizona, Tucson, USA
| | - Yiyun Cao
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Dun Wei
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China.
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6
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Wei D, Cao Y, Yan L, Gang H, Wu B, Ouyang B, Chen P, Jiang Y, Wang H. Enhanced Pseudo-Capacitance Process in Nanoarchitectural Layered Double Hydroxide Nanoarrays Hollow Nanocages for Improved Capacitive Deionization Performance. ACS APPLIED MATERIALS & INTERFACES 2023; 15:24427-24436. [PMID: 37171395 DOI: 10.1021/acsami.3c02044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Layered double hydroxides (LDHs) are perceived as a hopeful capacitive deionization (CDI) faradic electrode for Cl- insertion due to its tunable composition, excellent anion exchange capacity, and fast redox activity. Nevertheless, the self-stacking and inferior electrical conductivity of the two-dimensional structure of LDH lead to unsatisfactory CDI performance. Herein, the three-dimensional (3D) hollow nanocage structure of CoNi-layered double hydroxide/carbon composites is well designed as a CDI anode by cation etching of the pre-carbonized ZIF-67 template. C/CoNi-LDH has a unique 3D hollow nanocage structure and abundant pore features, which can effectively suppress the self-stacking of LDH sheets and facilitate the transport of ions. Moreover, the introduced amorphous carbon layer can act as a conductive network. When employed as the CDI anode, C/CoNi-LDH exhibited a high Cl- removal capacity of 60.88 mg g-1 and a fast Cl- removal rate of 18.09 mg g-1 min-1 at 1.4 V in 1000 mg L-1 NaCl solution. The mechanism of the Cl- intercalation pseudo-capacitance reaction of C/CoNi-LDH is revealed by electrochemical kinetic analysis and ex situ characterization. This study provides vital guidance for the design of high-performance electrodes for CDI.
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Affiliation(s)
- Dun Wei
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yiyun Cao
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Lvji Yan
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haiyin Gang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Bichao Wu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Baixue Ouyang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Peng Chen
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yuxin Jiang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China
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7
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Ma R, Luo W, Yan L, Guo C, Ding X, Gong X, Jia D, Xu M, Ai L, Guo N, Wang L. Constructing the quinonyl groups and structural defects in carbon for supercapacitor and capacitive deionization applications. J Colloid Interface Sci 2023; 645:685-693. [PMID: 37167917 DOI: 10.1016/j.jcis.2023.04.119] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/09/2023] [Accepted: 04/23/2023] [Indexed: 05/13/2023]
Abstract
The structural defects and oxygen-containing functional groups of carbon materials as electrode materials for supercapacitors or capacitive deionization devices are critical to their electrochemical performance. The tuning of surface oxygen-containing functional groups and carbon defects during pyrolysis is key to achieve a high performance in ion storage. Herein, quinonyl-dominant defective porous carbon is prepared by a pyrolysis and cross-linking route using lavender stem and potassium acetate as precursor. Benefiting from the presence of abundant defect and surface quinonyl groups, porous carbon shows an ultra-high specific capacitance of 401 F g-1 (1 A g-1) and a high capacitance retention of 63% at a high current density of 100 A g-1 in a KOH solution. Meanwhile, as a capacitive deionization electrode material, it also exhibited a high adsorption capacity of 25.5 mg g-1 in 500 mg L-1 NaCl solution at 1.2 V. Theoretical density functional theory (DFT) calculation demonstrates that surface quinonyl groups and carbon defects can synergistically facilitate the adsorption of K+ and Na+ during the charge/discharge process. This work provides a new perspective for understanding the role of surface oxygen-containing groups and intrinsic defects of porous carbon materials in electrochemical energy storage and desalination applications.
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Affiliation(s)
- Rui Ma
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Wanxia Luo
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Lihua Yan
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Chang Guo
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Xuehe Ding
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Xinyi Gong
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Dianzeng Jia
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Mengjiao Xu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Lili Ai
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China
| | - Nannan Guo
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China.
| | - Luxiang Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, PR China.
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8
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Gong C, Chen Z, Geng W, Fu Z, Chen C, Zhang Y, Wang G. Controlled fabrication of nitrogen-doped porous carbon foam with refined hierarchical architectures for desalination via capacitive deionization. J Colloid Interface Sci 2023; 643:516-527. [PMID: 37088054 DOI: 10.1016/j.jcis.2023.04.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/20/2023] [Accepted: 04/13/2023] [Indexed: 04/25/2023]
Abstract
Porous carbon materials have been regarded as a promising alternative to activated carbon for desalination via capacitive deionization (CDI) due to refined architectures and functionalities. However, it is still challenging to obtain a controlled hierarchical pore structure and considerable nitrogen-doped content by convenient method. Herein, nitrogen-doped hierarchical porous carbon foams (NHCFs) with different microstructural features, nitrogen contents and nitrogen species were successfully fabricated via a stepwise pyrolysis carbonization strategy using easily available melamine foam. Due to the synergistic effect of hierarchical porous structure and doped nitrogen, the optimized NHCF sample carbonized at 800℃ (NHCF-800) exhibited a maximum desalination capacity of 30.1 mg g-1 at the optimal operating parameters (500 mg/L NaCl solution, 1.2 V) and an excellent regeneration performance after 50 continuous adsorption-desorption cycles. Furthermore, density functional theory (DFT) was also conducted to elaborate the disparity of sodium adsorption energy among the nitrogen species for in-depth understanding, and it mainly benefits from the ascendency of the pyrrolic-N and pyridinic-N over the graphitic-N dopant. This work paves the way of rational regulation of nitrogen-doped process and hierarchical porous structure carbon as CDI electrode materials for desalination.
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Affiliation(s)
- Chengyun Gong
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China; Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key LabTableoratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Lu'an Branch, Anhui Institute of Innovation for Industrial Technology, Lu'an 237100, PR China
| | - Zhouyi Chen
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China; Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key LabTableoratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Wusong Geng
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key LabTableoratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Zhen Fu
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key LabTableoratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Chun Chen
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China; Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key LabTableoratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Yunxia Zhang
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China; Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key LabTableoratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Guozhong Wang
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China; Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key LabTableoratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Lu'an Branch, Anhui Institute of Innovation for Industrial Technology, Lu'an 237100, PR China.
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9
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Liu C, Ma X, Ma L, Xu Y, Wang F, Huang L, Ma S. A novel asymmetric CDI device for targeted removal of cation in water desalination. ENVIRONMENTAL TECHNOLOGY 2023; 44:1626-1641. [PMID: 34807812 DOI: 10.1080/09593330.2021.2010129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 11/14/2021] [Indexed: 06/13/2023]
Abstract
A novel asymmetric capacitive deionisation (CDI) device was home-made for the removal of cations from an aqueous solution through the structural innovation in this experiment. The adsorbent materials were characterised by Scanning Electron Microscope and BET as well as performing cyclic voltammetry curve tests. The results showed that the materials exhibited excellent performance (the specific surface area is 321.14 m²/g) and the maximum specific capacitance of the adsorbent material can reach 60 F/g at the 5 mV/s. The optimal operating conditions of the asymmetric CDI device were obtained using an orthogonal test method analysis and response surface methodology: the best desalination efficiency of CDI obtained at the concentration is 455.82 mg/L, the potential is 1.18 V and the flow rate is 46.54 mL/min. After the analysis of first-order kinetic model, it can be obtained that the fastest adsorption efficiency for Ca2+, followed by Mg2+, and the slowest for Na+, and the CDI device had a better adsorption effect on divalent cations. Simulation by Comsol software showed that the adsorption efficiency was better at a high flow rate. In addition, the CDI device has good stability and the mechanism of targeted cation removal and mass transfer process of the CDI were discussed in detail.
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Affiliation(s)
- Chang Liu
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, People's Republic of China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, Beijing, People's Republic of China
| | - Xiaoying Ma
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, People's Republic of China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, Beijing, People's Republic of China
| | - Lan Ma
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, People's Republic of China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, Beijing, People's Republic of China
| | - Yongyi Xu
- China Power Hua Chuang Electricity Technology Research Company Ltd., People's Republic of China
| | - Feng Wang
- China Power Hua Chuang Electricity Technology Research Company Ltd., People's Republic of China
| | - Luyue Huang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, People's Republic of China
| | - Shuangchen Ma
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, People's Republic of China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, Beijing, People's Republic of China
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10
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Jiang M, Huang J, Yang G, Wang H, Wang HF, Peng F, Cao Y, Yu H. In-Situ Regeneration of Carbon Monoliths as an Environmental-Benign Adsorbent for Environmental Remediation via a Flow-through Model. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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11
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Liu Y, Tian Y, Xu J, Wang C, Wang Y, Yuan D, Chew JW. Electrosorption performance on graphene-based materials: a review. RSC Adv 2023; 13:6518-6529. [PMID: 36845580 PMCID: PMC9950858 DOI: 10.1039/d2ra08252g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/19/2023] [Indexed: 02/28/2023] Open
Abstract
Due to its unique advantages such as flexible planar structure, ultrahigh specific surface area, superior electrical conductivity and electrical double-layer capacitance in theory, graphene has unparalleled virtues compared with other carbon materials. This review summarizes the recent research progress of various graphene-based electrodes on ion electrosorption fields, especially for water desalination utilizing capacitive deionization (CDI) technology. We present the latest advances of graphene-based electrodes, such as 3D graphene, graphene/metal oxide (MO) composites, graphene/carbon composites, heteroatom-doped graphene and graphene/polymer composites. Furthermore, a brief outlook on the challenges and future possible developments in the electrosorption area are also addressed for researchers to design graphene-based electrodes towards practical application.
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Affiliation(s)
- Yan Liu
- Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education Nanchang 330013 China
| | - Yun Tian
- Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education Nanchang 330013 China
| | - Jianda Xu
- Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education Nanchang 330013 China
| | - Changfu Wang
- Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education Nanchang 330013 China
| | - Yun Wang
- Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education Nanchang 330013 China
| | - Dingzhong Yuan
- Engineering Research Center of Nuclear Technology Application (East China Institute of Technology), Ministry of Education Nanchang 330013 China
| | - Jia Wei Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University Singapore 637459 Singapore .,Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University Singapore 639798 Singapore
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Sun J, Li Y, Song H, Li H, Lai Q, Egabaierdi G, Li Q, Zhang S, He H, Li A. Enhanced capacitive deionization properties of activated carbon doped with carbon nanotube-bridged molybdenum disulfide. CHEMOSPHERE 2023; 310:136740. [PMID: 36209852 DOI: 10.1016/j.chemosphere.2022.136740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 09/24/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
The shortage of freshwater supplies has restricted societal development. Capacitive deionization (CDI) is an emerging technology for desalination of seawater or brackish water, the performance of which is highly dependent on electrode materials. In this work, a molybdenum disulfide/carbon nanotube composite (CNTs-b-MoS2) with high capacitance was successfully synthesized using a hydrothermal method. The composite exhibited a specific capacitance of 112.79 F g-1. To reduce costs and determine the practicality of using CNTs-b-MoS2 for CDI, we combined activated carbon (AC) with CNTs-b-MoS2 as a CDI electrode. The research demonstrated that after doping with 5% (mass ratio) CNTs-b-MoS2, the specific capacitance and electrosorption capacity of AC were significantly improved and the maximum desalination capacity of CNTs-b-MoS2/AC reached 8.19 mg g-1. The low dosage of CNTs-b-MoS2 combined with the high specific surface area of AC avoided the shortcomings of CNTs-b-MoS2, namely low specific surface area and high cost. Moreover, the outstanding conductivity of CNTs-b-MoS2 improved the conductivity and enhanced the adsorption capacity of AC, giving CNTs-b-MoS2/AC potential as an advanced, low-cost CDI electrode material.
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Affiliation(s)
- Jing Sun
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China
| | - Yun Li
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China
| | - Haiou Song
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
| | - Hongxiang Li
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China
| | - Qian Lai
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China
| | - Gusunkiz Egabaierdi
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China
| | - Qimeng Li
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China
| | - Shupeng Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China.
| | - Huan He
- School of the Environment, Nanjing Normal University, Nanjing, 210023, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
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13
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Xu Y, Xiang S, Zhang X, Zhou H, Zhang H. High-performance pseudocapacitive removal of cadmium via synergistic valence conversion in perovskite-type FeMnO 3. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129575. [PMID: 35863230 DOI: 10.1016/j.jhazmat.2022.129575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/12/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Cadmium pollution is a serious threat for the global drink water and natural environment. Herein, a poly-pyrrole coated dual-metal perovskite-type oxide FeMnO3 (PFMO@PPy) was developed firstly as pseudocapacitive cathode for the reversible capture and release of cadmium ions by asymmetry pseudocapacitive deionization (APCDI) technology, extending the library of CDI electrodes. Our work highlighted several points: (i) PFMO@PPy achieved a maximum Cd-removal capacity of 144.6 mg g-1, and maintained the retention rate of 93.4% after 15-cycle CDI process for up to 150 h, far beyond other previous work. (ii) PFMO@PPy showed the superior removal ratio (~90%) under different real water environments such as tap water, lake water and the groundwater. (iii) The superior Cd(II) electrosorption and desorption behavior is ascribed to the reversible synergistic valence conversion (Fe3+/Fe0 and Mn3+/Mn2+), which is confirmed by ex-situ XPS measurement and electrochemical tests. (iv) DFT calculations confirmed the synergistic effect from Mn and Fe elements in perovskite-type bimetallic oxide FeMnO3. This study paves a new way for promising future applications of perovskite-type oxides containing dual Faradic redox-activity for wastewater treatment and environmental remediation.
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Affiliation(s)
- Yingsheng Xu
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China
| | - Shuhong Xiang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China
| | - Xinyuan Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China
| | - Hongjian Zhou
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China.
| | - Haimin Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, PR China.
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15
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HCl-activated porous nitrogen-doped carbon nanopolyhedras with abundant hierarchical pores for ultrafast desalination. J Colloid Interface Sci 2022; 628:236-246. [DOI: 10.1016/j.jcis.2022.07.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/11/2022] [Accepted: 07/24/2022] [Indexed: 11/22/2022]
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16
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Zhang S, Xu X, Liu X, Yang Q, Shang N, Zhao X, Zang X, Wang C, Wang Z, Shapter JG, Yamauchi Y. Heterointerface optimization in a covalent organic framework-on-MXene for high-performance capacitive deionization of oxygenated saline water. MATERIALS HORIZONS 2022; 9:1708-1716. [PMID: 35446328 DOI: 10.1039/d1mh01882e] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Capacitive deionization (CDI) provides a promising option for affordable freshwater while simultaneously storing energy, but its large-scale application is usually limited owing to the poor performance of conventional materials in natural (oxygenated) saline water. Herein, we report heterointerface optimization in a covalent organic framework (COF)-on-MXene heterostructure achieving a high CDI performance for desalination of oxygenated saline water. The 2D heterostructure with the optimal core-shell architecture inherits the high conductivity and reversible ion intercalation/deintercalation ability of MXene, and the hierarchical porous structure, large porosity, and extraordinary redox capacity of COFs. Thanks to the heterointerface optimization, the MXene@COF heterostructure exhibits a very stable cycling performance over 100 CDI cycles with a maximum NaCl adsorption capacity of 53.1 mg g-1 in oxygenated saline water, among the state-of-the-art values for CDI electrodes and also exceeding those of most MXene-based or 2D materials. This study highlights the importance of heterointerface optimization in MXene-organic 2D heterostructures to promote CDI of natural (oxygenated) saline water.
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Affiliation(s)
- Shuaihua Zhang
- Department of Chemistry, Hebei Agricultural University, Baoding 071001, Hebei, China
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Xingtao Xu
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Xiaohong Liu
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Qian Yang
- College of Public Health, Hebei University, Baoding 071002, Hebei, China
| | - Ningzhao Shang
- Department of Chemistry, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Xiaoxian Zhao
- Department of Chemistry, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Xiaohuan Zang
- Department of Chemistry, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Chun Wang
- Department of Chemistry, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Zhi Wang
- Department of Chemistry, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Joseph G Shapter
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Yusuke Yamauchi
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia.
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Xu H, Li M, Gong S, Zhao F, Zhao Y, Li C, Qi J, Wang Z, Wang H, Fan X, Peng W, Liu J. Constructing titanium carbide MXene/reduced graphene oxide superlattice heterostructure via electrostatic self-assembly for high-performance capacitive deionization. J Colloid Interface Sci 2022; 624:233-241. [PMID: 35660891 DOI: 10.1016/j.jcis.2022.05.131] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/16/2022] [Accepted: 05/22/2022] [Indexed: 12/25/2022]
Abstract
Capacitive deionization has attracted wide concern on accountof its high energy efficiency, low manufacturing cost and environmental friendliness. Nevertheless, the development of capacitive deionization is still impeded because of the scarcity of suitable electrode materials with superior performance. Herein, we successfully prepared the two-dimensional (2D) titanium carbide (Ti3C2Tx) MXene/ reduced graphene oxide (rGO) superlattice heterostructure by a facile electrostatic self-assembly strategy and systematically investigated its performance as capacitive deionized electrode materials. The unique 2D/2D superlattice heterostructure not only effectively alleviates the self-stacking problem of Ti3C2Tx MXene nanosheets, but also endows the heterostructure with superior conductivity and fast ion diffusion rate. As a result, the MXene/rGO superlattice heterostructure exhibits an outstanding salt (Na+) adsorption capacity (48 mg g-1) at 1.2 V significantly superior to pristine Ti3C2Tx MXene nanosheets, along with outstanding long-term cycling performance. Furthermore, the mechanism involved was elucidated through comprehensive characterizations. Therefore, this study offers a new pathway for designing high-performance electrode materials for capacitive deionization.
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Affiliation(s)
- Huiting Xu
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China
| | - Meng Li
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China
| | - Siqi Gong
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China
| | - Fan Zhao
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China
| | - Yang Zhao
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Chunli Li
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China
| | - Junjie Qi
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China
| | - Zhiying Wang
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China
| | - Honghai Wang
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China.
| | - Xiaobin Fan
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Wenchao Peng
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jiapeng Liu
- School of Chemical Engineering and Technology, National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Hebei University of Technology, Tianjin 300130, China.
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18
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Wang H, Wei D, He Y, Deng H, Wu B, Yan L, Gang H, Cao Y, Jin L, Zhang L. Carbon Nanoarchitectonics with Bi Nanoparticle Encapsulation for Improved Electrochemical Deionization Performance. ACS APPLIED MATERIALS & INTERFACES 2022; 14:13177-13185. [PMID: 35262320 DOI: 10.1021/acsami.1c19665] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Electrochemical deionization (EDI) is hopefully the next generation of water treatment technology. Bismuth (Bi) is a promising anode material for EDI, due to its high capacity and selectivity toward Cl-, but the large volume expansion and severe pulverization aggressively attenuated the EDI cycling performance of Bi electrodes. Herein, carbon-layer-encapsulated nano-Bi composites (Bi@C) were prepared by a simple pyrolysis method using a Bi-based metal-organic framework as a precursor. Bi nanoparticles are uniformly coated within the carbon layer, in which the Bi-O-C bond enhances the interaction between Bi and C. Such a structure effectively relieves the stress caused by volume expansion by the encapsulation effect of the carbon layer. Moreover, the introduction of a carbon skeleton provides a conductive network. As a consequence, the Bi@C composite delivered excellent electrochemical performance with a capacity of 537.6 F g-1 at 1 mV s-1. The Cl- removal capacity was up to 133.5 mg g-1 at 20 mA g-1 in 500 mg L-1 NaCl solution. After 100 cycles, the Bi@C electrode still maintains 71.8% of its initial capacity, which is much higher than the 26.3% of the pure Bi electrode. This study provides a promising strategy for improving EDI electrode materials.
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Affiliation(s)
- Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha 410083, China
| | - Dun Wei
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yingjie He
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haoyu Deng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Bichao Wu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Lvji Yan
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Haiyin Gang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yiyun Cao
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Linfeng Jin
- School of Material Science and Engineering, Central South University, Changsha 410083, P. R. China
| | - Liyuan Zhang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
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Zhang W, Jin C, Shi Z, Zhu L, Chen L, Liu Y, Zhang H. Biobased polyporphyrin derived porous carbon electrodes for highly efficient capacitive deionization. CHEMOSPHERE 2022; 291:133113. [PMID: 34856237 DOI: 10.1016/j.chemosphere.2021.133113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
Recently, capacitive deionization (CDI) has attracted considerable interest as a potential desalination technique for seawater. It is thus desirable to develop low-cost, sustainable, and efficient electrode materials for desalination. In this study, the polyporphyrin was prepared by a one-pot reaction from biobased furan derivative, followed by activation to manufacture nitrogen-doped polyporphyrin derived porous carbons (NPPCs) for efficient capacitive deionization. In the presence of KOH as a pore activator, NPPCs exhibited cross-linked interconnected nanosphere chain-like structures inherited from the polyporphyrin backbone with coexisting mesopores and micropores, leading to extremely high specific surface area (2979.3 m2 g-1) and large pore volume (2.22 cm3 g-1). The electrochemical measurements revealed good conductivity, outstanding stability, and extraordinary specific capacitance (328.7 F g-1) of NPPCs, which can be ascribed to rich nitrogen content (8.0 at%) and high Pyrrolic nitrogen ratio. Due to their superior hierarchical porous structure and excellent electrochemical performance, the NPPC-800 electrodes presented a high salt adsorption capacity (SAC) of 35.7 mg g-1 and outstanding cycling stability in 10 mM NaCl solution at 1.2 V during the desalination tests. This work demonstrates the utilization of biobased porous carbon material will pave a prospective way in sustainable and potential applications for CDI technique.
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Affiliation(s)
- Wei Zhang
- College of Environment, Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China
| | - Can Jin
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042, China.
| | - Zhenyu Shi
- State Environmental Protection Key Laboratory of Monitoring and Analysis for Organic Pollutants in Surface Water, Environment Monitoring Center of Jiangsu Province, Nanjing, 210036, China
| | - Liang Zhu
- College of Environment, Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China.
| | - Lin Chen
- College of Environment, Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China
| | - Yunlong Liu
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042, China
| | - Hao Zhang
- College of Environment, Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China
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Liu C, Ma L, Xu Y, Wang F, Tan Y, Huang L, Ma S. Experimental and theoretical study of a new CDI device for the treatment of desulfurization wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:518-530. [PMID: 34331231 DOI: 10.1007/s11356-021-15651-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
According to the characteristics of desulfurization wastewater, A new capacitive deionization (CDI) device was designed to study the desalination characteristics of desulfurization wastewater in this paper. The experiments investigated the desalination efficiency under different conditions which find that the best desalination efficiency is achieved at a voltage of 1.2V, pH=11 and 50°C. Besides, ion adsorption is more favorable under acidic and alkaline conditions. The anion and cation removal performance experiments showed that the order of cation removal is Mg2+>Na+>Ca2+>K+ and the order of anion removal is Cl->CO32->NO3->SO42->HCO3-. The mechanism of CDI was studied and analyzed by the isothermal adsorption model and COMSOL simulation software. It was found that the Freundlich model and Redlich-Peterson model have a good fit with the experimental results. The experiments show that the CDI device has excellent stability. CDI device was used to treat actual desulfurization wastewater. Furthermore, the study provides theoretical support for the industrial application of CDI for desulfurization wastewater treatment in the future. Graphical abstract.
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Affiliation(s)
- Chang Liu
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, Beijing, 102206, China
| | - Lan Ma
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, Beijing, 102206, China
| | - Yongyi Xu
- China Power Hua Chuang Electricity Technology Research Company Ltd., Beijing, China
| | - Feng Wang
- China Power Hua Chuang Electricity Technology Research Company Ltd., Beijing, China
| | - Yu Tan
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
| | - Luyue Huang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
| | - Shuangchen Ma
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China.
- MOE Key Laboratory of Resources and Environmental Systems Optimization, Beijing, 102206, China.
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21
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Liu Y, Du X, Wang Z, Wang L, Liu Z, Shi W, Zheng R, Dou X, Zhu H, Yuan X. Layered double hydroxide coated electrospun carbon nanofibers as the chloride capturing electrode for ultrafast electrochemical deionization. J Colloid Interface Sci 2021; 609:289-296. [PMID: 34896829 DOI: 10.1016/j.jcis.2021.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 10/19/2022]
Abstract
Slow desalination kinetics and poor durability of the electrodes are two key limitations of electrochemical deionization (EDI) that are considered to be the next generation of capacitive desalination (CDI). Herein, we report the design of a high-efficiency chloride removal electrode material for accelerating the desalination kinetics and concurrently improving the durability of EDI, which is based on coating NiMn-Cl layered double hydroxides (LDHs) on the surface of electrospun carbon nanofibers (CNFs@LDHs). The salient features of the as-developed CNFs@LDHs are that applying layer-structured LDHs with abundant redox-active sites to accelerate the pseudo-capacitive ion storage via fast ion intercalation/deintercalation, and leveraging the rigid CNF backbone to strengthen its durability by preventing the potential aggregation of LDHs. As expected, the CNFs@LDH based EDI system displays an ultrafast desalination rate of 0.51 mg g-1 s-1 and outstanding long-term stability (only 10.66 % desalination capacity reduction after 35 cycles), which is achieved without sacrificing its excellent desalination capacity (72.04 mg g-1). This work could be inspirational for the future design of ultrafast yet durable EDI approaching industrial desalination applications.
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Affiliation(s)
- Yong Liu
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Xin Du
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Ziping Wang
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Weifang, Shandong 262700, China
| | - Lihao Wang
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Zizhen Liu
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Wenxue Shi
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Runzhe Zheng
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Xinyue Dou
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Haiguang Zhu
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Xun Yuan
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
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Wang K, Liu Y, Ding Z, Chen Z, Zhu G, Xu X, Lu T, Pan L. Controlled synthesis of NaTi2(PO4)3/Carbon composite derived from Metal-organic-frameworks as highly-efficient electrodes for hybrid capacitive deionization. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119565] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Wang K, Du X, Liu Z, Geng B, Shi W, Liu Y, Dou X, Zhu H, Pan L, Yuan X. Bismuth oxychloride nanostructure coated carbon sponge as flow-through electrode for highly efficient rocking-chair capacitive deionization. J Colloid Interface Sci 2021; 608:2752-2759. [PMID: 34785052 DOI: 10.1016/j.jcis.2021.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
Abstract
Rocking-chair capacitive deionization (RCDI), as the next generation technique of capacitive deionization, has thrived to be one of the most promising strategies in the desalination community, yet was hindered mostly by its relatively low desalination rate and stability. Motivated by the goal of simultaneously enhancing the desalination rate and structural stability of the electrode, this paper reports an anion-driven flow-through RCDI (AFT-RCDI) system equipped with BiOCl nanostructure coated carbon sponge (CS@BiOCl for short; its backbone is derived from commercially available melamine foam with minimum capital cost) as the flow-through electrode. Owning to the rational design of the composite electrode material with minimum charge transfer resistance and ultrahigh structure stability as well as the superior flow-through cell architecture, the AFT-RCDI displays excellent desalination performance (desalination capacity up to 107.33 mg g-1; desalination rate up to 0.53 mg g-1s-1) with superior long-term stability (91.75% desalination capacity remained after 30 cycles). This work provides a new thought of coupling anion capturing electrode with flow-through cell architecture and employing a low-cost CS@BiOCl electrode with commercially available backbone material, which could shed light on the further development of low-cost electrochemical desalination systems.
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Affiliation(s)
- Kai Wang
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Xin Du
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Zizhen Liu
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Bo Geng
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Wenxue Shi
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Yong Liu
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China.
| | - Xinyue Dou
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Haiguang Zhu
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Likun Pan
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Xun Yuan
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
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Xiang HD, Liu P, Deng M, Tong DG. Separation of Rare-Earth Ions from Mine Wastewater Using B 12S Nanoflakes as a Capacitive Deionization Electrode Material. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:5459-5476. [PMID: 33980356 DOI: 10.1166/jnn.2021.19466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, nanoflakes of B12S were fabricated by plasma-assisted reaction of sulfur dichloride in an ionic liquid at room temperature using europium boride as a hard template. The nanoflakes had an average width and thickness of about 3 1urn and 9.6 nm, respectively, and a large specific surface area of 1197.2 m² g 1. They behaved like typical electric double-layer capacitors with a capacitance of 201.2 F g 1 at 0.2 mA cm ² During capacitive deionization to recover rare-earth ions, the nanoflakes had higher adsorption selectivity for Sm3+ than for other competing ions present in real mine waste water. This is due to the strong interaction of the electron-concentered S-groups (S''') of the nanoflakes with S m3+. This provides an alternative to construct efficient systems to specifically remove Sm3+ from aqueous solution using B12S nanoflakes. This process demonstrates that other boron sulfide compounds can be used to recover valuable ions by capacitive deionization.
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Affiliation(s)
- Huan Dong Xiang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology Chengdu 610059, China
| | - Peng Liu
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology Chengdu 610059, China
| | - Miao Deng
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology Chengdu 610059, China
| | - Dong Ge Tong
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology Chengdu 610059, China
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Shi M, Qiang H, Chen C, Bano Z, Wang F, Xia M, Lei W. Construction and evaluation of a novel three-electrode capacitive deionization system with high desalination performance. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118976] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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26
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Liu Y, Wang K, Xu X, Eid K, Abdullah AM, Pan L, Yamauchi Y. Recent Advances in Faradic Electrochemical Deionization: System Architectures versus Electrode Materials. ACS NANO 2021; 15:13924-13942. [PMID: 34498859 DOI: 10.1021/acsnano.1c03417] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Capacitive deionization (CDI) is an energy-efficient desalination technique. However, the maximum desalination capacity of conventional carbon-based CDI systems is approximately 20 mg g-1, which is too low for practical applications. Therefore, the focus of research on CDI has shifted to the development of faradic electrochemical deionization systems using electrodes based on faradic materials which have a significantly higher ion-storage capacity than carbon-based electrodes. In addition to the common symmetrical CDI system, there has also been extensive research on innovative systems to maximize the performance of faradic electrode materials. Research has focused primarily on faradic reactions and faradic electrode materials. However, the correlation between faradic electrode materials and the various electrochemical deionization system architectures, i.e., hybrid capacitive deionization, rocking-chair capacitive deionization, and dual-ion intercalation electrochemical desalination, remains relatively unexplored. This has inhibited the design of specific faradic electrode materials based on the characteristics of individual faradic electrochemical desalination systems. In this review, we have characterized faradic electrode materials based on both their material category and the electrochemical desalination system in which they were utilized. We expect that the detailed analysis of the properties, advantages, and challenges of the individual systems will establish a fundamental correlation between CDI systems and electrode materials that will facilitate future developments in this field.
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Affiliation(s)
- Yong Liu
- School of Material Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Kai Wang
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
| | - Xingtao Xu
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Kamel Eid
- Gas Processing Center, College of Engineering, Qatar University, Doha 2713, Qatar
| | | | - Likun Pan
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
| | - Yusuke Yamauchi
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
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Wang G, Yan T, Shen J, Zhang J, Zhang D. Capacitive Removal of Fluoride Ions via Creating Multiple Capture Sites in a Modulatory Heterostructure. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:11979-11986. [PMID: 34427438 DOI: 10.1021/acs.est.1c03228] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fluoride pollution has become a major concern because of its adverse effects on human health. However, the removal capacity of defluorination agents in traditional methods is far from satisfactory. Herein, capacitive removal of F- ions via creating multiple capture sites in a modulatory heterostructure has been originally demonstrated. The heterostructure of uniformly dispersed Al2O3 coating on hollow porous nitrogen-doped carbon frameworks was precisely synthesized by atomic layer deposition. An exceptional F- ion removal efficiency at 1.2 V (95.8 and 92.9% in 5 and 10 mg/L F- solutions, respectively) could be finally achieved, with a good regeneration ability after 20 consecutive defluorination cycles. Furthermore, we investigated the removal mechanisms of F- ions by in situ Raman, in situ X-ray diffraction, and ex situ X-ray photoelectron spectroscopy measurements. The promotional removal capacity was realized by the multiple capture sites of the reversible conversion of Al-F species and the insertion of F- ions into the carbon skeleton. This work offers an important new pathway and deep understanding for efficient removal of F- ions from wastewater.
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Affiliation(s)
- Guizhi Wang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No.99 Shangda Road, Shanghai 200444, China
| | - Tingting Yan
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No.99 Shangda Road, Shanghai 200444, China
| | - Junjie Shen
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Jianping Zhang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No.99 Shangda Road, Shanghai 200444, China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No.99 Shangda Road, Shanghai 200444, China
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Xu Y, Xiang S, Zhou H, Wang G, Zhang H, Zhao H. Intrinsic Pseudocapacitive Affinity in Manganese Spinel Ferrite Nanospheres for High-Performance Selective Capacitive Removal of Ca 2+ and Mg 2. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38886-38896. [PMID: 34374272 DOI: 10.1021/acsami.1c09996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Pseudocapacitor-type hybrid capacitive deionization (PHCDI) has been developed extensively for deionization, which enables to address the worldwide freshwater shortage. However, the exploitation of selective hardness ion removal in resourceful hard water via the intrinsic pseudocapacitive effect, rather than the ion-sieving or ion-swapping effect based on the electric double layer (EDL) of porous carbon, is basically blank and urgent. Herein, manganese spinel ferrite (MFO) nanospheres were successfully fabricated by one-step solvothermal synthesis and used as the cathode for PHCDI assembled with commercial activated carbon. The MFO electrode exhibited prominent capacities of 534.6 μmol g-1 (CaCl2) and 980.4 μmol g-1 (MgCl2), outperforming those of other materials ever reported in the literature. Fascinatingly, systematic investigation of binary and ternary ion solutions showed the high electro-affinity of hardness ions (Ca2+ and Mg2+) toward Na+, especially the leading affinity of Mg2+, in which the superhigh hardness selectivity of 34.76 was achieved in the ternary solution with a molar ratio of Na-Ca-Mg as 20:1:1. Unexpectedly, the ion-swapping trace in a multi-ion environment was also first detected in our pseudocapacitive-based electrode. The electrochemical response in unary and multiple electrolytes disclosed that the unique pseudocapacitive affinity based on the cation (de)intercalation-redox mechanism was from the synergistic effect of the relative redox potential, ionic radius, and valence, in which the redox potential was the dominant factor.
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Affiliation(s)
- Yingsheng Xu
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Shuhong Xiang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hongjian Zhou
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Guozhong Wang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Haimin Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Huijun Zhao
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, Gold Coast, Queensland 4222, Australia
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Zhao M, Zhao Z, Ma X, Zhao J, Ye M, Wen X. Carbon-embedded hierarchical and dual-anion C@MoSP heterostructure for efficient capacitive deionization of saline water. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138494] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Xiaoxian H, Xiaobo M, Haiying W, Xinyu L, Yuhong H, Weichun Y. Enhanced capacitive deionization boosted by Co and N co-doping in carbon materials. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118590] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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31
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Enhanced capacitive deionization of defect-containing MoS2/graphene composites through introducing appropriate MoS2 defect. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138363] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Core-shell nanoparticles of Prussian blue analogues as efficient capacitive deionization electrodes for brackish water desalination. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117899] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mao M, Yan T, Shen J, Zhang J, Zhang D. Selective Capacitive Removal of Heavy Metal Ions from Wastewater over Lewis Base Sites of S-Doped Fe-N-C Cathodes via an Electro-Adsorption Process. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:7665-7673. [PMID: 33983021 DOI: 10.1021/acs.est.1c01483] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The pollution of toxic heavy metals is becoming an increasingly important issue in environmental remediation because these metals are harmful to the ecological environment and human health. Highly efficient selective removal of heavy metal ions is a huge challenge for wastewater purification. Here, highly efficient selective capacitive removal (SCR) of heavy metal ions from complex wastewater over Lewis base sites of S-doped Fe-N-C cathodes was originally performed via an electro-adsorption process. The SCR efficiency of heavy metal ions can reach 99% in a binary mixed solution [NaCl (100 ppm) and metal nitrate (10 ppm)]. Even the SCR efficiency of heavy metal ions in a mixed solution containing NaCl (100 ppm) and multicomponent metal nitrates (10 ppm for each) can approach 99%. Meanwhile, the electrode also demonstrated excellent cycle performance. It has been demonstrated that the doping of S can not only enhance the activity of Fe-N sites and improve the removal ability of heavy metal ions but also combine with heavy metal ions by forming covalent bonds of S- clusters on Lewis bases. This work demonstrates a prospective way for the selective removal of heavy metal ions in wastewater.
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Affiliation(s)
- Minlin Mao
- International Joint Laboratory of Catalytic Chemistry, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Tingting Yan
- International Joint Laboratory of Catalytic Chemistry, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Junjie Shen
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Jianping Zhang
- International Joint Laboratory of Catalytic Chemistry, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry, College of Sciences, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
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Highly selective capacitive deionization of copper ions in FeS2@N, S co-doped carbon electrode from wastewater. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118336] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Mao M, Yan T, Shen J, Zhang J, Zhang D. Capacitive Removal of Heavy Metal Ions from Wastewater via an Electro-Adsorption and Electro-Reaction Coupling Process. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:3333-3340. [PMID: 33605148 DOI: 10.1021/acs.est.0c07849] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Heavy metals widely exist in wastewater, which is a serious threat to human health or water environment. Highly efficient removal of heavy metal ions from wastewater is a major challenge to wastewater treatment. In this work, capacitive removal of heavy metal ions from wastewater via an electro-adsorption and electro-reaction coupling process was originally demonstrated. The removal efficiency of heavy metal ions in the binary-component solutions containing metal nitrate (10 mg/L) and NaCl (100 mg/L) can reach 99%. Even the removal efficiency of heavy metal ions can be close to 99% in the multi-component solution containing all the seven metal nitrates (10 mg/L for each) and 100 mg/L NaCl. Meanwhile, the electro-adsorption and electro-reaction coupling process maintained excellent regeneration ability even after 20 cycles. Furthermore, the heavy metal ions removal mechanism was proven to be the pseudocapacitive intercalation of heavy metal ions into the layered structure of the employed W18O49/graphene in the electro-adsorption and electro-reaction coupling process. This work demonstrates great potential for general applicability to wastewater treatment.
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Affiliation(s)
- Minlin Mao
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Tingting Yan
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Junjie Shen
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Jianping Zhang
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Dengsong Zhang
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
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Mao M, Yan T, Chen G, Zhang J, Shi L, Zhang D. Selective Capacitive Removal of Pb 2+ from Wastewater over Redox-Active Electrodes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:730-737. [PMID: 33289377 DOI: 10.1021/acs.est.0c06562] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Water pollution has become an environmental hazard. Diverse metal cations exist in wastewater; lead is the most common heavy metal pollutant among them. Selective removal of highly toxic and ultradiluted lead ions from wastewater is a major challenge for water purification. Here, selective capacitive removal (SCR) of lead ions from wastewater over redox-active molybdenum dioxide/carbon (MoO2/C) electrodes was developed by an environment-friendly asymmetric capacitive deionization (CDI) method. The MoO2/C spheres act as cathodes of an asymmetric CDI device and effectively reduce the concentration of Pb2+ from 50 ppm to <0.21 ppb. Moreover, the SCR efficiency of lead ions over redox-active MoO2/C electrodes is >99% in mixtures of 100 ppm Pb(NO3)2 and 100 ppm NaCl solutions. In addition, the electrodes exhibit high regeneration performance in mixtures of NaCl and Pb(NO3)2 and high SCR efficiency for lead ions from mixtures of heavy metal ions. The tetrahedral structure of the [MoO4] lattice is shown to be more favorable for the intercalation of lead ions. In situ Raman spectroscopy further shows that the transition of the crystal interface between [MoO6] and [MoO4] cluster lattice could be electrochemically controlled during SCR. Therefore, this study provides a new direction for the SCR of lead ions from wastewater.
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Affiliation(s)
- Minlin Mao
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Tingting Yan
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Guorong Chen
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Jianping Zhang
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Liyi Shi
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
| | - Dengsong Zhang
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China
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Xu Y, Zhou H, Wang G, Zhang Y, Zhang H, Zhao H. Selective Pseudocapacitive Deionization of Calcium Ions in Copper Hexacyanoferrate. ACS APPLIED MATERIALS & INTERFACES 2020; 12:41437-41445. [PMID: 32820894 DOI: 10.1021/acsami.0c11233] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In recent years, the capacitive deionization (CDI) technology has gradually become a promising technology for hard water treatment. Up to now, most of the work for water softening in CDI was severely limited by the inferior selectivity and electrosorption performances of carbon-based electrodes in spite of combining Ca2+-selective ion-exchange resin or membranes. Pseudocapacitive electrode materials that selectively interact with specific ions by Faradic redox reactions or ion (de)intercalation offer an alternative strategy for highly selective electrosorption of Ca2+ from water because of brilliant ion adsorption capacity. Here, we first used copper hexacyanoferrate (CuHCF) as a pseudocapacitive electrode to methodically study the selective pseudocapacitive deionization of Ca2+ over Na+ and Mg2+. Using the hybrid CDI cell consisting of a CuHCF cathode and an activated carbon anode without any ion-exchange membrane, the outstanding Ca2+ electrosorption capacity of 42.8 mg·g-1 and superior selectivity &(Ca2+/Na+) of 3.05 at a molar ratio of 10:1 were obtained at 1.4 V, surpassing those of the reported carbon-based electrodes. Finally, electrochemical measurements and molecular dynamics (MD) simulations provided an in-depth understanding of the selective pseudocapacitive deionization of Ca2+ ions in a CuHCF electrode. Our study would be helpful for developing high-efficiency selective electrosorption of target charged ions by intrinsic properties of pseudocapacitive materials.
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Affiliation(s)
- Yingsheng Xu
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hongjian Zhou
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Guozhong Wang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Yunxia Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Haimin Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Huijun Zhao
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, Southport, QLD 4222, Australia
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Li P, Feng T, Song Z, Tan Y, Luo W. Chitin derived biochar for efficient capacitive deionization performance. RSC Adv 2020; 10:30077-30086. [PMID: 35518217 PMCID: PMC9056277 DOI: 10.1039/d0ra05554a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 07/31/2020] [Indexed: 11/30/2022] Open
Abstract
The selection and preparation of an electrode material is the core of capacitive deionization. In order to obtain a material with a good deionization properties, we have designed an environmentally-friendly and simple way of preparing biochar. In this work, biochar was prepared by a thermal-deposition method and after chemical modification it was characterized with a scanning electron microscope (SEM), Fourier transform infrared spectrophotometer (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The specific surface area of biochar modified by KOH is as high as 833.76 m2 g−1, but the specific surface area of the unmodified electrode material is only 126.43 m2 g−1. The electrochemical analysis (CV and EIS) of the biochar indicates that HC-800 has a lower charge transfer resistance and a higher specific capacitance, where the specific capacity of HC-800 reaches 120 F g−1. A CDI property analysis of HC-800 shows a better electrosorption capacity of 11.52 mg g−1 and better regeneration and cycling stability than CS-800. The desalination amount remains 87.23% after several cycles. Schematic illustration of the fabrication of chitin derived biochar and KOH-activated chitin derived biochar electrodes for capacitive deionization.![]()
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Affiliation(s)
- Pengwei Li
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology Wuhan 430081 China
| | - Tao Feng
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology Wuhan 430081 China .,Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology Wuhan 430081 China
| | - Zhengyuan Song
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology Wuhan 430081 China
| | - Yi Tan
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology Wuhan 430081 China
| | - Weiwei Luo
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology Wuhan 430081 China
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