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Wang Z, Zhao M, Chen Z, Liang Z, Yang F, Li Y, Deng L. Electro-enhanced mass transfer boosting photocatalysis towards ionized organic pollutants. Chem Commun (Camb) 2025; 61:7823-7826. [PMID: 40310952 DOI: 10.1039/d5cc01176k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2025]
Abstract
Removing antibiotics from wastewater in an efficient and sustainable way is a great challenge. Herein, we developed an electro-enhanced photocatalysis system. It was found that a positively-charged organic molecule (tetracycline) could be attracted by the negatively-polarized electrode, thus leading to enhanced mass transfer and improved removal rate.
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Affiliation(s)
- Ziquan Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Mengyu Zhao
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Zengye Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Zhujie Liang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Fengcheng Yang
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Yongliang Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Libo Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
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2
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Wang C, Yang Z, Li S, Wang Y, Zhang H. Efficient separation and extraction of copper ions from electroplating wastewater by capacitive deionization using chalcopyrite (CuFeS 2) electrode. J Colloid Interface Sci 2025; 683:964-972. [PMID: 39756191 DOI: 10.1016/j.jcis.2024.12.181] [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: 09/29/2024] [Revised: 12/01/2024] [Accepted: 12/22/2024] [Indexed: 01/07/2025]
Abstract
As a hot issue, the scientific and effective separation and extraction of heavy metal ions from complex industrial effluent deserves wide investigation. Copper is an important valuable heavy metal in industrial wastewater. Selective extraction of copper ion (Cu2+) from effluent not only alleviates the shortage of resources, but also has economic and social benefits. In this study, we used capacitive deionization (CDI) to selectively extract Cu2+ from electroplating wastewater using the bimetallic sulfide CuFeS2 electrode. The CuFeS2 electrode showed good Cu2+ extraction performance and selectivity in a variety of cationic coexistence systems and real electroplating wastewater, indicating its potential for practical application. Specifically, the adsorption capacity of Cu2+ was up to 208.3 mg g-1 in a 100 mg L-1 CuSO4 solution. The CuFeS2 electrode removed more than 90 % of Cu2+ and had the highest partition coefficient (Kd) in a variety of cationic coexistence systems. The characterizations demonstrated that the excellent performance of CuFeS2 electrode during the adsorption process was mainly due to the Faraday redox reaction. This work offers a novel approach and theoretical basis for extracting Cu2+ from electroplating wastewater by capacitive deionization.
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Affiliation(s)
- Caiyun Wang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Chusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006. PR China
| | - Zhiquan Yang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Chusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006. PR China.
| | - Shuai Li
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Chusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006. PR China
| | - Ying Wang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Chusters, Ministry of Education, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006. PR China
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou Higher Education Mega Centre, Guangzhou 510006. PR China
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He M, Chen J, Wang Z, Chen Z, Deng L. Efficient removal of copper ions through photothermal enhanced flow-electrode capacitive deionization. Chem Commun (Camb) 2025; 61:713-716. [PMID: 39661004 DOI: 10.1039/d4cc05404k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2024]
Abstract
Removing Cu2+ from wastewater through capacitive deionization at low temperatures is a great challenge. Herein, a new strategy for enhancing the performance was developed using photothermal carbon nanospheres as the electrodes. Upon irradiating with sunlight, the Cu2+ removal rate and Cu2+/Na+ selectivity were increased by 74% and 43%, respectively.
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Affiliation(s)
- Mengyao He
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Jiaqi Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Ziquan Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Zengye Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Libo Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
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4
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Ge S, Wei K, Peng W, Huang R, Akinlabi E, Xia H, Shahzad MW, Zhang X, Xu BB, Jiang J. A comprehensive review of covalent organic frameworks (COFs) and their derivatives in environmental pollution control. Chem Soc Rev 2024; 53:11259-11302. [PMID: 39479879 DOI: 10.1039/d4cs00521j] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2024]
Abstract
Covalent organic frameworks (COFs) have gained considerable attention due to their design possibilities as the molecular organic building blocks that can stack in an atomically precise spatial arrangement. Since the inception of COFs in 2005, there has been a continuous expansion in the product range of COFs and their derivatives. This expansion has led to the evolution of three-dimensional structures and various synthetic routes, propelling the field towards large-scale preparation of COFs and their derivatives. This review will offer a holistic analysis and comparison of the spatial structure and synthesis techniques of COFs and their derivatives. The conventional methods of COF synthesis (i.e., ultrasonic chemical, microwave, and solvothermal) are discussed alongside the synthesis strategies of new COFs and their derivatives. Furthermore, the applications of COFs and their derived materials are demonstrated in air, water, and soil pollution management such as gas capture, catalytic conversion, adsorption, and pollutant removal. Finally, this review highlights the current challenges and prospects for large-scale preparation and application of new COFs and the derived materials. In line with the United Nations Sustainable Development Goals (SDGs) and the needs of digital-enabled technologies (AI and machine learning), this review will encompass the future technical trends for COFs in environmental pollution control.
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Affiliation(s)
- Shengbo Ge
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Kexin Wei
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Wanxi Peng
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China.
| | - Runzhou Huang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Esther Akinlabi
- Department of Mechanical and Construction Engineering, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK.
| | - Hongyan Xia
- Department of Applied Sciences, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| | - Muhammad Wakil Shahzad
- Department of Mechanical and Construction Engineering, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK.
| | - Xuehua Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Ben Bin Xu
- Department of Mechanical and Construction Engineering, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK.
| | - Jianchun Jiang
- Key Lab of Biomass Energy and Material of Jiangsu Province, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, China.
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Wang Z, Chen X, Zhang Y, Ma J, Lin Z, Abdelkader A, Titirici MM, Deng L. Locally Enhanced Flow and Electric Fields Through a Tip Effect for Efficient Flow-Electrode Capacitive Deionization. NANO-MICRO LETTERS 2024; 17:26. [PMID: 39331327 PMCID: PMC11436671 DOI: 10.1007/s40820-024-01531-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 09/05/2024] [Indexed: 09/28/2024]
Abstract
Low-electrode capacitive deionization (FCDI) is an emerging desalination technology with great potential for removal and/or recycling ions from a range of waters. However, it still suffers from inefficient charge transfer and ion transport kinetics due to weak turbulence and low electric intensity in flow electrodes, both restricted by the current collectors. Herein, a new tip-array current collector (designated as T-CC) was developed to replace the conventional planar current collectors, which intensifies both the charge transfer and ion transport significantly. The effects of tip arrays on flow and electric fields were studied by both computational simulations and electrochemical impedance spectroscopy, which revealed the reduction of ion transport barrier, charge transport barrier and internal resistance. With the voltage increased from 1.0 to 1.5 and 2.0 V, the T-CC-based FCDI system (T-FCDI) exhibited average salt removal rates (ASRR) of 0.18, 0.50, and 0.89 μmol cm-2 min-1, respectively, which are 1.82, 2.65, and 2.48 folds higher than that of the conventional serpentine current collectors, and 1.48, 1.67, and 1.49 folds higher than that of the planar current collectors. Meanwhile, with the solid content in flow electrodes increased from 1 to 5 wt%, the ASRR for T-FCDI increased from 0.29 to 0.50 μmol cm-2 min-1, which are 1.70 and 1.67 folds higher than that of the planar current collectors. Additionally, a salt removal efficiency of 99.89% was achieved with T-FCDI and the charge efficiency remained above 95% after 24 h of operation, thus showing its superior long-term stability.
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Affiliation(s)
- Ziquan Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Xiangfeng Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Yuan Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Jie Ma
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China
| | - Zhiqun Lin
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Amor Abdelkader
- Department of Engineering, Faculty of Science and Technology, Bournemouth University, Talbot Campus, Fern Barrow, Poole, England, BH12 5BB, UK
- Institut de Chimie de Nice, Université Côte d'Azur, UMR CNRS 7272, 28 Av. Valrose, 06108, Nice, France
| | - Maria-Magdalena Titirici
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, Exhibition Rd, London, SW7 2AZ, UK
| | - Libo Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China.
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Xiong J, Ye W, Mu L, Lu X, Zhu J. Separation of Mono-/Divalent Ions via Controlled Dynamic Adsorption/Desorption at Polythiophene Coated Carbon Surface with Flow-Electrode Capacitive Deionization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2400288. [PMID: 38593337 DOI: 10.1002/smll.202400288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/11/2024] [Indexed: 04/11/2024]
Abstract
Capacitive deionization for selective separation of ions is rarely reported since it relies on the electrostatic attraction of oppositely charged ions with no capability to distinguish ions of different valent states. Using molecular dynamic simulation, a screening process identified a hybrid material known as AC/PTh, which consists of activated carbon with a thin layer of polythiophene (PTh) coating. By utilizing AC/PTh as electrode material implementing the short-circuit cycle (SCC) mode in flow-electrode capacitive deionization (FCDI), selective separation of mono-/divalent ions can be realized via precise control of dynamic adsorption and desorption of mono-/divalent ions at a particular surface. Specifically, AC/PTh shows strong interaction with divalent ions but weak interaction with monovalent ions, the distribution of divalent ions can be enriched in the electric double layer after a couple of adsorption-desorption cycles. At Cu2+/Na+ molar ratio of 1:40, selectivity toward divalent ions can reach up to 110.3 in FCDI SCC mode at 1.0 V. This work presents a promising strategy for separating ions of different valence states in a continuously operated FCDI device.
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Affiliation(s)
- Jingjing Xiong
- State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Wenkai Ye
- State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Liwen Mu
- State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Xiaohua Lu
- State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Jiahua Zhu
- State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
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Gao M, Liang W, Yang Z, Ao T, Chen W. Flexible ultrathin Nitrogen-Doped carbon mediates the surface charge redistribution of a hierarchical tin disulfide nanoflake electrode for efficient capacitive deionization. J Colloid Interface Sci 2023; 650:1244-1252. [PMID: 37478741 DOI: 10.1016/j.jcis.2023.07.100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/09/2023] [Accepted: 07/15/2023] [Indexed: 07/23/2023]
Abstract
Constructing pseudocapacitive electrodes with high specific capacities is indispensable for increasing the large-scale application of capacitive deionization (CDI). However, the insufficient CDI rate and cycling performance of pseudocapacitive-based electrodes have led to a decline in their use due to the corresponding volumetric expansion and contraction that occurs during long-term CDI processes. Herein, hierarchical porous SnS2 nanoflakes are encapsulated inside an N-doped carbon (NC) matrix to achieve efficient CDI. Benefiting from the synergistic properties of the pseudocapacitive SnS2 nanoflakes and few-layered N-doped carbon, the heterogeneous interface simultaneously provides more available vigorous sites and demonstrates rapid charge-transfer kinetics, resulting in a superior desalination capability (49.86 mg g-1 at 1.2 V), rapid desalination rate (1.66 mg g-1 min-1) and better cyclic stability. Computational research reveals a work function-induced surface charge redistribution of the SnS2@NC heterojunction, which can lead to an auspicious surface electronic structure that reduces the adsorption energy to improve the diffusion kinetics toward sodium adsorption. This work contributes to providing a thoughtful understanding of the interface engineering between transition metal dichalcogenides and NC to construct high-performance CDI electrode materials for further industrialization.
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Affiliation(s)
- Ming Gao
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Wencui Liang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Zhiqian Yang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Tianqi Ao
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China
| | - Wenqing Chen
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
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Zhu J, Zeng L, Song Y, Peng F, Wang Y, He T, Deng L, Zhang P. High performance sulfur/carbon cathode for Na-S battery enabled by electrocatalytic effect of Sn-doped In 2S 3. J Colloid Interface Sci 2023:S0021-9797(23)00943-8. [PMID: 37248161 DOI: 10.1016/j.jcis.2023.05.142] [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: 03/07/2023] [Revised: 05/14/2023] [Accepted: 05/21/2023] [Indexed: 05/31/2023]
Abstract
Room-temperature sodium-sulfur (RT Na-S) batteries have been attracting enormous interests due to their low-cost, high capacity and environmental benignity. However, the shuttle effect and the sluggish electrochemical reaction activity of sodium polysulfides (NaPSs) seriously restrict their practical application. To solve these issues, we rationally designed an advanced Sn-doped In2S3/S/C cathode for RT Na-S batteries by magnetron sputtering in this work, which exhibited a high reversible capacity (1663.5 mAh g-1 at 0.1 A g-1) and excellent cycling performance (902.9 mAh g-1 after 50 cycles). The in situ electrochemical impedance spectroscopy indicated that the Sn-doped In2S3 coating can accelerate charge-transfer kinetics and facilitate the diffusion of Na+. Furthermore, theoretical calculation revealed that doping of Sn into In2S3 can reduce the energy band gap, thus accelerating the electron transfer and promoting the electrochemical conversion of active species. It is demonstrated that adjusting the electronic structure is a reliable method to improve the electrocatalytic effect of catalyst and significantly improve the performance of S cathode in RT Na-S batteries.
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Affiliation(s)
- Jianhui Zhu
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Linchao Zeng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Yumin Song
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, PR China
| | - Feng Peng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Yanyi Wang
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Tingshu He
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Libo Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Peixin Zhang
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China.
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