Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Yuehan Wang,Yujie Zhang,Ning Cai,Juanqin Xue
Recently, capacitance deionization (CDI) has attracted much attention as an energy-saving and high-efficiency wastewater treatment technology , in which electrode materials play a significant role. In this work, ionic liquid (1-ethyl-3-methylimidazole tetrafluoroborate)-doped composite electrode materials (PPy- IL /CS/CNT) were prepared by electrochemical deposition and applied in the heavy metal ions wastewater adsorption. Compared with PPy/CS/CNT, PPy -IL /CS/CNT has improved the specific capacitance (358.76 F/g) and specific surface (79.99 m 2 /g) because of the doping of IL, which substantially improves the agglomeration phenomenon in the morphology. After 1000 cycles of CV, the specific capacitance decay is only 13.51%, which shows that the prepared material has excellent cycling stability. The adsorption of PPy -IL /CS/CNT can reach 35.84 mg/g for 100 mg/L Cu 2+ solution, which is nearly 2 times as much as PPy/CS/CNT, in addition, the adsorption of Ag + (26.43 mg/g) and Fe 3+ (37.82 mg/g) by PPy -IL /CS/CNT is also pretty impressive. Therefore, this study presents an effective basis and new sight into the industrialization of CDI technology for the treatment of heavy metal ion wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
DESALINATION
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2023
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IF 9.9
Shasha Zhang,Rongli Fang,Le Zhang,Shunjiang Huang,Yanshuang Zhao,Yue Wang
Two-dimensional (2D) layer material MXene (Ti 3 C 2 T x ) is a promising electrode material in capacitive deionization (CDI) because of its advantages of large capacitance, high conductivity and abundant active sites. However, MXene nanosheets have a large number of metastable metal atoms, which are easy to react with dissolved oxygen and form metal oxides , resulting in structural instability and attenuation of electrochemical performance of MXene. Moreover, the inherent defects of MXene layered structure that are easy to stack, seriously limiting its application in CDI. In this paper, MXene fully coated by WS 2 antioxidant film with mesoporous structure was designed and successfully prepared by hydrothermal method to form a 3D mutually supported heterostructure , so as to improve the structural stability and CDI performance of MXene. The heterostructure performs abundant mesoporous, excellent electrical conductivity , good hydrophilicity and excellent cyclic stability. Therefore, the WS 2 @MXene composite demonstrates high specific capacitance (217.0 F g −1 ) and retention rate of 90.51 % after 1000 GCD cycles. The hybrid AC//WS 2 @MXene cell composed of AC anode and WS 2 @MXene cathode shows excellent desalination capacity (39.1 mg g −1 ). The retention rate of the cell is still 94.9 % after 40 desalting cycles, which is better than that of AC//MXene cell (84.4 %).
研究领域:
材料科学
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环境科学
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DOI
高影响因子
RSC Advances
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2023
·Vol. 13
·期 15
·10029-10034
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IF 3.9
Gengen Peng,Haibo Li
Owing to its high electrochemical ability, the FeP is envisioned to be the potential electrode for capacitive deionization (CDI) with enhanced performance. However, it suffers from poor cycling stability due to the active redox reaction. In this work, a facile approach has been designed to prepare the mesoporous shuttle-like FeP using MIL-88 as the template. The porous shuttle-like structure not only alleviates the volume expansion of FeP during the desalination/salination process but also promotes ion diffusion dynamics by providing convenient ion diffusion channels. As a result, the FeP electrode has demonstrated a high desalting capacity of 79.09 mg g−1 at 1.2 V. Further, it proves the superior capacitance retention, which maintained 84% of the initial capacity after the cycling. Based on post-characterization, a possible electrosorption mechanism of FeP has been proposed.
研究领域:
材料科学
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电化学
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环境工程
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DOI
高影响因子
DESALINATION
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2026
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IF 9.9
Yongsi Xie,Jiemei Fu,Chunxue Li,Juan Luo,Rui Ma,Shichang Sun
Microwave synthesis enables atomic Fe dispersion in ZIF-8 - derived carbon. • Fe-doped carbon boosts low-concentration Li + adsorption via CDI. • Fe doping tunes porous structure and active sites. • Li + adsorption on Fe-N 4 is clarified by characterization and DFT. Lithium ions are widely present in various water resources, but their extraction has long been constrained by low lithium concentration in various water resources, necessitating the development of efficient extraction technologies. Capacitive deionization (CDI) is an emerging, energy-efficient technology for lithium recovery, yet its efficacy is largely constrained by the limited adsorption capacity of existing electrode materials. Herein, we developed a facile method to fabricate Fe N co-doped porous carbon materials (Fe-NC-M) derived from Zeolitic Imidazolate Framework-8 (ZIF-8) via a microwave-aided pyrolysis route. Microwave-assisted pyrolysis, leveraging rapid volumetric heating and selective energy absorption to achieve uniform Fe N 4 dispersion and construct a hierarchically porous carbon skeleton, effectively suppressing metal agglomeration. By modulating the Fe doping content, the electronic structure and surface chemistry of the carbon skeleton are refined, resulting in a remarkable enhancement in Li + adsorption. The optimized Fe-NC-M-150 electrode demonstrates an appreciable adsorption capacity for lithium ions, measuring 17.34 mg/g, surpassing most reported carbon-based CDI materials. Moreover, the electrode exhibits stable cyclic performance with 84.4% capacity retention after 20 adsorption-desorption cycles. A combination of physicochemical characterization, electrochemical analysis, and Density Functional Theory (DFT) calculations reveals that the Fe N 4 sites improve conductivity and ion diffusion kinetics, and provide strong coordination sites for Li + adsorption. This work provides a feasible strategy for designing high-performance CDI electrode materials toward efficient lithium resource recovery from low-concentration lithium resources. Download: Download high-res image (319KB) Download: Download full-size image
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DOI
高影响因子
Journal of Materials Chemistry A
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2021
·Vol. 9
·期 21
·12807-12817
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IF 12.732
Hao Zhang,Chaohai Wang,Wuxiang Zhang,Ming Zhang,Junwen Qi,Jieshu Qian,Xiuyun Sun,Brian Yuliarto,Jongbeom Na,Teahoon Park,Hassanien Gomaa Abdien Gomaa,Yusuf Valentino Kaneti,Jin Woo Yi,Yusuke Yamauchi,Jiansheng Li
Carbon-based electrodes play important roles in constructing efficient capacitive deionization (CDI) devices. Therefore, the rational design of carbon materials with optimized structure, composition, and morphology is crucial for further improving the CDI performance. Herein, a novel N, P co-doped eave-like hierarchical porous carbon (NP-EHPC) for CDI is reported. To prepare the NP-EHPC, the core–shell ZIF-8@AF particles are first prepared through the kinetically-controlled growth of zeolitic imidazolate framework-8 (ZIF-8) and polymerization of p-aminophenol and formaldehyde (AF), followed by subsequent pyrolysis and post-doping with phosphorus. Owing to the unique eave-like morphology, presence of abundant mesopores, and co-doping of P and N, the NP-EHPC exhibits a high desalination capacity of 24.14 mg g−1 in 500 mg L−1 NaCl solution at 1.2 V and long cycling stability of over 150 cycles. Moreover, the density functional theory (DFT) calculation results reveal that the co-doping of N and P atoms can greatly enhance the binding energies for Na and Cl atoms and lead to superior electrosorption capacity. This work provides a new insight into the design of high-performance carbon materials for the desalination of brackish water.
研究领域:
材料科学
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环境工程
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电化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Aniu Qian,Runze Zhao,Anning Song,Hu Shi
Faradaic capacitive deionization (CDI), which exploits pseudo-capacitive electrodes, is an appealing water-purification candidate from low-salinity desalinated water due to its fast Faradaic electro-sorption and ion intercalations. However, current Faradaic CDI faces the challenge in low salt adsorption capacity and poor selective sodium-ion (Na + ) applicability. Herein, amorphous ferric phosphate (FePO 4 )-anchored on three-dimensional macro-porous Ti 3 C 2 T x network (3D FePO 4 @Ti 3 C 2 T x ) electrode is proposed without scarifying Ti 3 C 2 T x electronic conductivity, wherein sodium-ion captured FePO 4 provided abundant Na + adsorption site for enhancing desalination capacity and Na + selectivity. Simultaneously, highly-interconnected channels accelerated electron/ion transport to enable effective Na + intercalation in electro-sorption. Accordingly, the assembled FePO 4 @Ti 3 C 2 T x //activated carbon (AC) asymmetric CDI device delivered a typical Na + -intercalated behavior with high desalination capacity of 65 mg g −1 , in which electric current generation could power a blue light-emitting diode (LED) screen. Importantly, the asymmetric CDI device enabled an evident Na + selectivity over the Al 3+ with high separator factor up to 6.3 in binary mixture feed of Na + and Al 3+ . This study offers a new idea to achieve high desalination performance and sodium-ion selectivity via 3D framework supported ions-capture structure in seawater desalination.
研究领域:
水处理净化
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电化学
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材料科学
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环境工程
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纳米技术
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能量存储
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离子选择性
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DOI
PubMed
高影响因子
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
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2023
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IF 4.9
Xiaojun Hu,Renhan Dong,Sheng Huang,Yisheng Zeng,Wei Zhan,Xiaofang Gao,Dong Tian,Jian Peng,Jiewei Xu,Ting Wang,Yaying Zhang,Xiaohui Wang,Xiaoxia Zhang,Jin Liu,Bing Guang,Tai Yang
Clostridioides difficile infection (CDI) causes severe diarrhea and colitis, leading to significant morbidity, mortality, and high medical costs worldwide. Oral vancomycin, a first-line treatment for CDI, is associated with a high risk of recurrence, necessitating novel therapies for primary and recurrent CDI. A novel small-molecule compound, CDBN-YGXZ, was synthesized by modifying the benzene ring of nitazoxanide with lauric acid. The mechanism of action of CDBN-YGXZ was validated using a pyruvate:ferredoxin/flavodoxin oxidoreductase (PFOR) inhibition assay. The efficacy of CDBN-YGXZ was evaluated using the MIC test and CDI infection model in mice and hamsters. Furthermore, metagenomics was used to reveal the underlying reasons for the effective reduction or prevention of CDI after CDBN-YGXZ treatment. The inhibitory activity against PFOR induced by CDBN-YGXZ. MIC tests showed that the in vitro activity of CDBN-YGXZ against C. difficile ranging from 0.1 to 1.5 μg/mL. In the mouse and hamster CDI models, CDBN-YGXZ provided protection during both treatment and relapse, while vancomycin treatment resulted in severe relapse and significant clinical scores. Compared with global effects on the indigenous gut microbiota induced by vancomycin, CDBN-YGXZ treatment had a mild influence on gut microbes, thus resulting in the disappearance or reduction of CDI recurrence. CDBN-YGXZ displayed potent activity against C. difficile in vitro and in vivo, reducing or preventing relapse in infected animals, which could merit further development as a potential drug candidate for treating CDI.
研究领域:
药理学
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传染病学
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微生物学
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药物开发
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）