Ultrahigh surface area carbon nanosheets derived from lotus leaf with super capacities for capacitive deionization and dye adsorption

Liu, Gaowa; Qiu, Lei; Deng, Hai; Wang, Jubei; Yao, Lei; Deng, Libo

doi:10.1016/j.apsusc.2020.146485

Cited by 68 publications

(26 citation statements)

References 48 publications

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“…Table 1 represents the description of the symbols used in metrics equations. Among many reports, salt adsorption capacity (SAC) (Chen, Li, et al, 2020), average salt adsorption rate for standard and flow-electrode capacitive deionization (ASAR N and ASAR FCDI ) (Li, Ning, et al, 2020;Liu, Qiu, Deng, et al, 2020), and charge efficiency (CE) (Gao et al, 2019) are the most commonly used performance metrics and calculated by Equations ( 1)-( 4), respectively.…”

Section: Electrosorption Performance Metricsmentioning

confidence: 99%

“…Table 1 represents the description of the symbols used in metrics equations. Among many reports, salt adsorption capacity (SAC) (Chen, Li, et al, 2020), average salt adsorption rate for standard and flow‐electrode capacitive deionization (ASAR N and ASAR FCDI ) (Li, Ning, et al, 2020; Liu, Qiu, Deng, et al, 2020), and charge efficiency (CE) (Gao et al, 2019) are the most commonly used performance metrics and calculated by Equations ()–(), respectively.

SAC goodbreak= \frac{()(, C_{o} goodbreak- C_{e}) \times normalV}{m}

{ASAR}_{N} goodbreak= \frac{SAC}{t}

{or ASAR}_{FCDI} goodbreak= \frac{()(, C_{0} goodbreak- C_{e}) \times normalV}{normalt \times normalS}

CE goodbreak= \frac{SAC \times normalF}{\frac{\int I . dt}{normalm}}

Further, salt removal efficiency (SRE) is calculated by Equation () (Chen, Li, et al, 2020).

SRE goodbreak= \frac{C_{o} - C_{e}}{{normalC}_{normalo}} goodbreak\times 100

…”

Section: Electrosorption Performance Metricsmentioning

confidence: 99%

“…The biochar:KOH ratio (1:1.5) showed higher specific capacitance (400 F/g) and SAC (22.5 mg/g) among all the proportions. Further, Liu, Qiu, Deng, et al (2020) synthesized carbon nanosheets from lotus leaf (LL). Dried LL was first pyrolyzed at two different temperatures, 500 and 800 C, followed through activation by KOH at several mass ratios.…”

Section: Biomass-derived Carbonmentioning

confidence: 99%

“…One of the green chemistry principles is “Use of renewable feedstocks.” Carbon materials derived from biomass have received considerable interest due to their environmental benignity, low cost, and ease of production (Liu, Qiu, Deng, et al, 2020). This section focuses on biomass derived carbons for CDI applications.…”

Section: Materials Perspectivementioning

confidence: 99%

See 3 more Smart Citations

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Datar

Mane

Jha

2022

Water Environment Research

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Capacitive deionization is an emerging and rapidly developing electrochemical technique for water desalination across the globe with exponential growth in publications. There are various architectures and materials being explored to obtain utmost electrosorption performance. The symmetric architectures consist of the same material on both electrodes, while asymmetric architectures have electrodes loaded with different materials. Asymmetric architectures possess higher electrosorption performance as compared with that of symmetric architectures owing to the inclusion of either faradaic materials, redox‐active electrolytes, or ion specific pre‐intercalation material. With the materials perspective, faradaic materials have higher electrosorption performance than carbon‐based materials owing to the occurrence of faradaic reactions for electrosorption. Moreover, the architecture and material may be tailored in order to obtain desired selectivity of the target component and heavy metal present in feed water. In this review, we describe recent developments in architectures and materials for capacitive deionization and summarize the characteristics and salt removal performances. Further, we discuss recently reported architectures and materials for the removal of heavy metals and radioactive materials. The factors that affect the electrosorption performance including the synthesis procedure for electrode materials, incorporation of additives, operational modes, and organic foulants are further illustrated. This review concludes with several perspectives to provide directions for further development in the subject of capacitive deionization. Practitioner Points Capacitive deionization (CDI) is a rapidly developing electrochemical water desalination technique with exponential growth in publications. Faradaic materials have higher salt removal capacity (SAC) because of reversible redox reactions or ion‐intercalation processes. Combination of CDI with other techniques exhibits improved selectivity and removal of heavy metals. Operational parameters and materials properties affect SAC. In future, comprehensive experimentation is needed to have better understanding of the performance of CDI architectures and materials.

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Section: Electrosorption Performance Metricsmentioning

confidence: 99%

“…Table 1 represents the description of the symbols used in metrics equations. Among many reports, salt adsorption capacity (SAC) (Chen, Li, et al, 2020), average salt adsorption rate for standard and flow‐electrode capacitive deionization (ASAR N and ASAR FCDI ) (Li, Ning, et al, 2020; Liu, Qiu, Deng, et al, 2020), and charge efficiency (CE) (Gao et al, 2019) are the most commonly used performance metrics and calculated by Equations ()–(), respectively.

SAC goodbreak= \frac{()(, C_{o} goodbreak- C_{e}) \times normalV}{m}

{ASAR}_{N} goodbreak= \frac{SAC}{t}

{or ASAR}_{FCDI} goodbreak= \frac{()(, C_{0} goodbreak- C_{e}) \times normalV}{normalt \times normalS}

CE goodbreak= \frac{SAC \times normalF}{\frac{\int I . dt}{normalm}}

Further, salt removal efficiency (SRE) is calculated by Equation () (Chen, Li, et al, 2020).

SRE goodbreak= \frac{C_{o} - C_{e}}{{normalC}_{normalo}} goodbreak\times 100

…”

Section: Electrosorption Performance Metricsmentioning

confidence: 99%

Section: Biomass-derived Carbonmentioning

confidence: 99%

Section: Materials Perspectivementioning

confidence: 99%

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Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Datar

Mane

Jha

2022

Water Environment Research

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show abstract

“…4, AC-SC showed a structure with hysteresis type H3, indicating plate-like particle aggregates that give rise to wedge-shaped and cone-shaped pores. Moreover, the specific surface area was 2.14 ± 0.10 m 2 g −1 , diameter pore (Dp) of the 53.63 ± 0.04 nm and volume pore (Vp) of the 0.0054 ± 0.003 cm 3 g −1 , indicating the mesoporous materials, but with smaller specific area and pore volume about other vegetal charcoals, due to the precursor chosen for synthesis and the possible sintering of the pores, decreasing in the surface area and porosity (Liu et al, 2020). However, it allows the possibility of a high removal capacity due to the selectivity of the AC-SC with the dexamethasone drug, allowing a physicochemical interaction and thus the possible removal of the organic pollutant (Pavlović et al, 2021).…”

Section: Characterization Of the Biocharmentioning

confidence: 99%

Potential Application of Alternative Materials for Organic Pollutant Removal

Costa

Pavoski

Espinosa

et al. 2022

Water Air Soil Pollut

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best DEX removal (53.02%), about the others' concentration (2.0 and 7.5 g L −1 ). About the equilibrium and kinetic adsorption, the Sips model and pseudosecond order showed the best experimental data adjusted, indicating that the adsorption monolayer was dependent on the ions onto the biosorbent, with a maximum adsorption capacity of 0.744 mg g −1 after 180 min. Therefore, AC-SC can be used as an alternative material in the removal of organic pollutants, such as drug removal.

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Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Qiu,

Li,

et al. 2023

Advanced Sustainable Systems

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With the development of economy and increasing environmental awareness, how to effectively remove organic pollutants in wastewater is a research hotspot. Adsorption is one of the effective methods, and the adsorption material is the key factor to determine the efficiency. In this review, biomass‐derived carbon materials as adsorbents of organic pollutants and the adsorption mechanism are discussed in depth. The effects of carbonization and activation on the morphology and structure of carbon materials; the modification strategies of carbon adsorbents, the adsorption performance of biomass‐derived carbon materials for organic pollutants are described and illustrated; the future work of the biomass‐derived carbon materials is proposed.

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Ultrahigh surface area carbon nanosheets derived from lotus leaf with super capacities for capacitive deionization and dye adsorption

Cited by 68 publications

References 48 publications

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Potential Application of Alternative Materials for Organic Pollutant Removal

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

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