Potential-responsive ions-selectively capture effect for efficient removal of copper ions from wastewater

Niu, Junjian; Yan, Wenjun; Zhang, Wei; Hao, Xiaogang; Wang, Zhongde; Guan, Guoqing

doi:10.1016/j.electacta.2019.135249

Cited by 22 publications

(10 citation statements)

References 28 publications

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“…Importantly, in the XPS analysis of S 2p after adsorption (Figure 4g), two new characteristic peaks were generated at 161.46 and 162.37 eV that correspond to the S 2p3/2 and 2p1/2 of S−Cu, respectively, demonstrating that the S−S captured the Cu 2+ successfully. 62,63 All these results indicate that a transformation from CuS to Cu 2 S happens in the adsorption process. Combined with previous cyclic stability experiments, the adsorption and desorption processes can be expressed using the following equation In order to further illustrate the excellent selectivity of the CuS electrode for Cu 2+ , density functional theories calculation was used to obtain the structure and corresponding adsorption energy of CuS-captured Cu 2+ , various salt ions, and other heavy metal ions in electric adsorption.…”

Section: Performances In Real Water Matricesmentioning

confidence: 85%

Selective Capture of Cu²⁺ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

et al. 2022

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Resource shortage and industrial wastewater pollution are important problems concerning environmental safety. Copper is not only an important industrial metal but also a common heavy metal contamination in water. Selective extraction of copper from wastewater is a huge challenge. Here, an environmentally friendly hybrid capacitive deionization method was used to selectively remove Cu2+ from wastewater by using the redox-active CuS electrode for the first time. CuS as a cathode material can significantly reduce the concentration of Cu2+ in wastewater with the high adsorption capacity (350.04 mg·g–1) and excellent selective adsorption. The removal efficiency for Cu2+ is greater than 90%, and the distribution coefficient K d is over 104 mL·g–1 in a variety of salt ions and heavy metal-ion mixtures. Additionally, the electrode shows high cyclic stability in the adsorption of Cu2+. Importantly, CuS exhibits an outstanding copper extraction performance in real water samples (e.g., industrial wastewater and natural lake water), which confirms the high applicability of CuS in real-world scenarios. Ex situ XRD and XPS tests were used to unveil the Cu2+ removal mechanism. This work provides a new direction for the removal of copper from wastewater and a possibility for the application of copper resource extraction from wastewater.

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Section: Performances In Real Water Matricesmentioning

confidence: 85%

Selective Capture of Cu²⁺ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

et al. 2022

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“…From 2,2'-dithiodianiline, PDTDA could be synthesized by an electrochemical method using a glassy carbon electrode dipped into a solution containing 2,2'-dithiodianiline + HClO 4 / LiClO 4 [138] or by radical polymerization with 2,2'dithiodianiline. [139] Another way is in situ synthesis of 2,2dithiodianiline [140] from 2-aminothiophenol and hydrogen peroxide. The material then automatically polymerized to form PDTDA (Scheme 21).…”

Section: Sulfur-based Materialsmentioning

confidence: 99%

Organic Positive Materials for Magnesium Batteries: A Review

Tran

Thanh

2021

Chemistry A European J

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Magnesium batteries, like lithium-ion batteries, with higher abundance and similar efficiency, have drawn great interest for large-scale applications such as electric vehicles, grid energy storage and many more. On the other hand, the use of organic electrode materials allows high energyperformance, metal-free, environmentally friendly, versatile, lightweight, and economically efficient magnesium storage devices. In particular, the structural diversity and the simple activity of organic molecules make redox properties, and hence battery efficiency, easy to monitor. While organic magnesium batteries still in their infancy, this field becomes more and more promising because significant results were reported. To summarize the achievements in studies on organic cathodes for magnesium systems, their synthesis is discussed, combined with electrode design to provide the basis for controlling the electrochemical properties. Moreover, the techniques to synthesize organic materials with high-yield are mentioned. Finally, potential problems and prospects are explored to further improve organic cathodes.

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“…At the same time, the film electrode does not need to be chemically regenerated, effectively avoiding secondary pollution. 21 Currently, this technology has been applied to the selective separation of many ions, such as Li + , 22 Cs + , 23 Pb 2+ , 24 Ni 2+ , 25 Y 3+ , 26 ClO 4 − , 27 F − , 28 Cl − , 17 and I − . 29 For example, Ji et al synthesized PPy/BiOCl EIXM to achieve the recovery of Cl − ; 31 Luo et al applied BiOI to extract I − .…”

Section: ■ Introductionmentioning

confidence: 99%

“…As a result, the adsorption or desorption of target ions is achieved. , ESIX greatly improves the separation efficiency of ions, especially from low-concentration solutions. At the same time, the film electrode does not need to be chemically regenerated, effectively avoiding secondary pollution . Currently, this technology has been applied to the selective separation of many ions, such as Li + , Cs + , Pb 2+ , Ni 2+ , Y 3+ , ClO 4 – , F – , Cl – , and I – .…”

Section: Introductionmentioning

confidence: 99%

BiOI with Inherent Photo/Electric Biactivity Recovery I^– by Novel Photoassisted Electrochemically Switched Ion Exchange Technology

Cheng

Wang

Luo

et al. 2022

Ind. Eng. Chem. Res.

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The recovery of iodide ion (I − ) from aqueous solutions is of great significance to economic development. Photoassisted electrochemically switched ion exchange (P-ESIX) takes advantage of the photo/electron bioactivity of EIXMs, which has been used for the recovery of bromide ion (Br − ) to increase the adsorption capacity of Br − . To further expand the application of P-ESIX, we used iodide-vacancy bismuth oxyiodide (I −vacancy BiOI) as the photoelectroactive ion exchange material (P-EIXM) for the recovery of I − . The results showed that an I − -vacancy BiOI film can effectively recover I − and improve the adsorption capacity because of its excellent selectivity and visible light adsorption ability. Compared with ESIX, the I − adsorption capacity increases by 1.38 times with a growth rate of 37.4% at 0.6 V (vs SCE). Also, the film electrode still retains 84.0% of the initial adsorption capacity after 10 cycles of use. The mechanism of P-ESIX system was further analyzed on the basis of the energy band structure theory. It is not only innovative and efficient technology for the recovery of I − but also shows that P-ESIX has potential as a new technology for a wide range of applications in the selective recovery of target ions.

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Potential-responsive ions-selectively capture effect for efficient removal of copper ions from wastewater

Cited by 22 publications

References 28 publications

Selective Capture of Cu²⁺ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

Selective Capture of Cu²⁺ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

Organic Positive Materials for Magnesium Batteries: A Review

BiOI with Inherent Photo/Electric Biactivity Recovery I^– by Novel Photoassisted Electrochemically Switched Ion Exchange Technology

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Potential-responsive ions-selectively capture effect for efficient removal of copper ions from wastewater

Cited by 22 publications

References 28 publications

Selective Capture of Cu2+ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

Selective Capture of Cu2+ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

Organic Positive Materials for Magnesium Batteries: A Review

BiOI with Inherent Photo/Electric Biactivity Recovery I– by Novel Photoassisted Electrochemically Switched Ion Exchange Technology

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Selective Capture of Cu²⁺ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

Selective Capture of Cu²⁺ Using a Redox-Active CuS Cathode Material in Hybrid Capacitive Deionization

BiOI with Inherent Photo/Electric Biactivity Recovery I^– by Novel Photoassisted Electrochemically Switched Ion Exchange Technology