MoS2-encapsulated nitrogen-doped carbon bowls for highly efficient and selective removal of copper ions from wastewater

Wu, Tianxiao; Chen, Xinwen; Zhang, Hongguo; Zhao, Meng; Huang, Lei; Yan, Jia; Su, Minhua; Liu, Xianjie

doi:10.1016/j.seppur.2022.122284

Cited by 20 publications

(3 citation statements)

References 45 publications

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“…As shown in Figures 3A and Figure S5a, the GCD curves of 1T‐MoS 2 /C hybrid, 2H‐MoS 2 /C hybrid, 1T‐MoS 2 , 2H‐MoS 2 , and HCSs electrodes were measured under 1 A/g. The GCD curves all exhibit asymmetrical triangles, demonstrating the Faraday stored energy process 52 . Significantly, the specific capacity of 1T‐MoS 2 /C hybrid electrode (241.3 F/g) is markedly greater than those of the 2H‐MoS 2 /C hybrid electrode (61.1 F/g), 1T‐MoS 2 electrode (188.9 F/g), 2H‐MoS 2 electrode (50.8 F/g), and HCSs electrode (43.2 F/g).…”

Section: Resultsmentioning

confidence: 94%

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Confinement and phase engineering boosting 1T phase MoS₂/carbon hybrid for high‐performance capacitive deionization

Zhang,

Fan,

Gong

et al. 2024

AIChE Journal

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Capacitive deionization (CDI) has attracted significant attention as a water treatment technology owing to its low cost, high efficiency, and eco‐friendliness. However, the unsatisfactory desalination performance of traditional electrode materials hinders the development of CDI. Herein, 1T‐MoS2/C hybrid microspheres are successfully fabricated through confinement and phase engineering strategies. The confinement effect of porous hollow carbon microspheres reduces the overgrowth and agglomeration of MoS2 nanosheets, which is beneficial for exposing more active sites and enhancing stability. Meanwhile, the 1T phase MoS2 displays high intrinsic conductivity and large interlayer spacing, which is conducive to rapid insertion/extraction of Na+. Consequently, 1T‐MoS2/C hybrid becomes a prospect electrode material for CDI, which showcases outstanding desalination capacity (48.1 mg/g at 1.2 V), eminent desalination rate as well as exceptional stability. Moreover, the desalination mechanisms are clarified through various characterizations and density functional theory calculations. This study provides new perspectives on designing high‐performance MoS2‐based CDI electrode materials.

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Section: Resultsmentioning

confidence: 94%

“…The GCD curves all exhibit asymmetrical triangles, demonstrating the Faraday stored energy process. 52 the GCD findings. Meanwhile, the analogous shapes also signify impressive reversibility of the 1T-MoS 2 /C hybrid electrode.…”

Section: Electrochemical Performancementioning

confidence: 89%

Confinement and phase engineering boosting 1T phase MoS₂/carbon hybrid for high‐performance capacitive deionization

Zhang,

Fan,

Gong

et al. 2024

AIChE Journal

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show abstract

“…This discharge of heavy metal copper ions presents a significant threat to water and soil quality, particularly affecting the liver and gallbladder. − Traditional treatments for copper-containing wastewater, such as chemical precipitation, adsorption methods, ion exchange, thermal condensation, and membrane-based desalination techniques, commonly encounter issues such as high operational costs, low energy utilization rates, scaling, and fouling challenges, as well as the problem of secondary pollution during chemical regeneration. In contrast, capacitive deionization (CDI), as a newly developed and increasingly recognized desalination technique, offers inherent advantages, including remarkable energy efficiency, minimal capital and maintenance expenses, and adaptability, to a wide range of water qualities. − In light of these attributes, a high-efficiency and cost-effective CDI system emerges as a viable solution for effectively removing copper ions from wastewater. ,− …”

Section: Introductionmentioning

confidence: 99%

Salted Dried Bamboo Shoots-Derived Mesoporous Carbon Inherently Doped with SiC and Nitrogen for Capacitive Deionization

Zhang,

Qin,

Liu

et al. 2024

Langmuir

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Dried bamboo shoots (DBS) are a natural resource with inherent silica content, which can serve as sacrificial templates for the formation of mesoporous carbon but also promote the generation of silicon carbide (SiC). Building on this, we introduced mesoporous and graphitic carbon/SiC (SiC/BSC) as the CDI electrode for copper ion (Cu 2+ ) removal. Mesoporous carbon electrodes facilitate faster ion transport, diffusion, and electron-transfer pathways. Furthermore, SiC accelerates electron transfer and promotes faradic redox reactions during the charge and discharge processes. Consequently, the synergistic effect of SiC/ BSC mesoporous carbon material leads to a promising electrode for Cu 2+ capacitive deionization. Leveraging these unique properties, the SiC/BSC electrode material exhibits an outstanding CDI performance of 381.5 mg/g at 1.8 V. This study offers a strategy for the preparation of efficient mesoporous carbon materials as CDI electrodes, specifically tailored for the deionization of Cu 2+ ions.

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Engineering Faradaic Electrode Materials for High‐Efficiency Water Desalination

Zhou,

Shu,

et al. 2024

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Water desalination technologies play a key role in addressing the global water scarcity crisis and ensuring a sustainable supply of freshwater. In contrast to conventional capacitive deionization, which suffers from limitations such as low desalination capacity, carbon anode oxidation, and co‐ion expulsion effects of carbon materials, the emerging faradaic electrochemical deionization (FDI) presents a promising avenue for enhancing water desalination performance. These electrode materials employed faradaic charge‐transfer processes for ion removal, achieving higher desalination capacity and energy‐efficient desalination for high salinity streams. The past decade has witnessed a surge in the advancement of faradaic electrode materials and considerable efforts have been made to explore optimization strategies for improving their desalination performance. This review summarizes the recent progress on the optimization strategies and underlying mechanisms of faradaic electrode materials in pursuit of high‐efficiency water desalination, including phase, doping and vacancy engineering, nanocarbon incorporation, heterostructures construction, interlayer spacing engineering, and morphology engineering. The key points of each strategy in design principle, modification method, structural analysis, and optimization mechanism of faradaic materials are discussed in detail. Finally, this work highlights the remaining challenges of faradaic electrode materials and present perspectives for future research.

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MoS2-encapsulated nitrogen-doped carbon bowls for highly efficient and selective removal of copper ions from wastewater

Cited by 20 publications

References 45 publications

Confinement and phase engineering boosting 1T phase MoS₂/carbon hybrid for high‐performance capacitive deionization

Confinement and phase engineering boosting 1T phase MoS₂/carbon hybrid for high‐performance capacitive deionization

Salted Dried Bamboo Shoots-Derived Mesoporous Carbon Inherently Doped with SiC and Nitrogen for Capacitive Deionization

Engineering Faradaic Electrode Materials for High‐Efficiency Water Desalination

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MoS2-encapsulated nitrogen-doped carbon bowls for highly efficient and selective removal of copper ions from wastewater

Cited by 20 publications

References 45 publications

Confinement and phase engineering boosting 1T phase MoS2/carbon hybrid for high‐performance capacitive deionization

Confinement and phase engineering boosting 1T phase MoS2/carbon hybrid for high‐performance capacitive deionization

Salted Dried Bamboo Shoots-Derived Mesoporous Carbon Inherently Doped with SiC and Nitrogen for Capacitive Deionization

Engineering Faradaic Electrode Materials for High‐Efficiency Water Desalination

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Resources

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Confinement and phase engineering boosting 1T phase MoS₂/carbon hybrid for high‐performance capacitive deionization

Confinement and phase engineering boosting 1T phase MoS₂/carbon hybrid for high‐performance capacitive deionization