Porous carbon electrodes from activated wasted coffee grounds for capacitive deionization

Qian, Min; Xuan, Xiao Yang; Pan, Likun; Gong, Shang

doi:10.1007/s11581-019-02887-9

Cited by 21 publications

(5 citation statements)

References 48 publications

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“…This result is higher than the bio-based activated carbon and nearly comparable to other types of biomass-and biowaste-derived carbon aerogels (SAC value from 16.00 to 20.92 mg g −1 ) (Table 5). [16][17][18][19][20]…”

Section: Electrosorption Performancementioning

confidence: 99%

“…Corn stalk Carbon aerogel 19.47 1100 [16] Leather wastes Carbon aerogel 20.92 1200 [17] Citrus peel Activated carbon 16 1800 [18] Wasted coffee ground Activated carbon 12.50 120 [19] Water hyacinth Carbon aerogel 14.69 3000 This work (NH 2 CONH2, 99%), potassium hydroxide (KOH, 85%), and sodium chloride (NaCl, 99%) were acquired from XiLong Chemicals (China).…”

Section: Type Of Biomass Type Of Carbon Electrode Adsorption Capacity...mentioning

confidence: 99%

“…Therefore, biomass‐ and waste‐derived carbon aerogels have recently been exploited not only to reduce the expense of electrode preparation but also to improve their electrosorption capacity. [ 16–20 ]…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, biomass-and waste-derived carbon aerogels have recently been exploited not only to reduce the expense of electrode preparation but also to improve their electrosorption capacity. [16][17][18][19][20] Due to their rampant growth and sturdy properties, water hyacinth (WH) is considered to be a harmful aquatic plant in many parts of the world, including Vietnam, [21] which not only blocks the water flow but also pollutes numerous rivers, reservoirs, and channels.…”

Section: Introductionmentioning

confidence: 99%

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Water hyacinth as a green and sustainable material for carbon aerogel electrodes utilized in membrane capacitive deionization

Nguyen

Duong

Phan

et al. 2023

CLEAN Soil Air Water

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Water hyacinth is a substantial and quick‐growing plant that can strongly invade and negatively affect the aquatic ecosystem, causing many problems to the water environment by consuming nutrients and oxygen from surface water. However, the hierarchical porous carbon derived from water hyacinth can be employed for the removal of oil spills, heavy metals, or wastewater nutrients. Recently, water‐hyacinth‐derived carbon aerogel has been utilized as electrode for the desalination of brackish water using membrane capacitive deionization (MCDI) technology. In this research, lignocellulose aerogels were synthesized from water hyacinth, which were then pyrolyzed to obtain carbon aerogel and then treated with KOH to acquire activated carbon aerogel, with the corresponding surface area of 51 and 100 m2 g−1. The desalination capacity of the MCDI device was also evaluated using a 200 ppm NaCl feed water solution with an applied potential of 1.2 V. A high salt adsorption capacity value of 14.69 mg g−1 was achieved after 3000 s. These results will lead a new research area of biomass and bio‐waste conversion to fabricate CDI‐utilized carbon aerogel electrodes.

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Section: Electrosorption Performancementioning

confidence: 99%

Section: Type Of Biomass Type Of Carbon Electrode Adsorption Capacity...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Water hyacinth as a green and sustainable material for carbon aerogel electrodes utilized in membrane capacitive deionization

Nguyen

Duong

Phan

et al. 2023

CLEAN Soil Air Water

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show abstract

“…The sample activated at 900 C showed unique multimodal structure having specific surface area of 2613.7 m 2 /g, specific capacitance of 190 F/g and SAC of 27.2 mg/g. Further, Qian et al (2019) followed the same methodology for synthesis of porous carbon by pyrolysis of wasted coffee grounds with KOH at different temperatures: 600, 700, 800, and 900 C. The sample pyrolyzed at temperature 800 C showed surface area up to 1856 m 2 /g and a specific capacitance of 180.3 F/g in 1 M NaCl solution at a scan rate of 10 mV/s. The same sample showed an SAC up to 12.50 and 16.50 mg/g in NaCl solution at cell voltages of 1.2 and 1.4 V, respectively.…”

Section: Biomass-derived Carbonmentioning

confidence: 99%

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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Microbial Surface Confined Growth Strategy for the Synthesis of Highly Loaded NiCoP Nanoparticles with Hollow Derived Carbon Shells for Sodium Ion Capture

Yuan,

Sun,

Chen

et al. 2024

Advanced Science

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NiCoP is considered to be a very promising material for sodium ion (Na+) capturing, however, the volume expansion and poor cyclic stability of NiCoP during the storage limit its application. In response to these limitations, Finite element simulations are used to help in the rational design of the NiCoP structure. A novel microbial surface confined growth strategy is employed to synthesize highly loaded NiCoP nanoparticles (NiCoP NPs) supported on hollow derived carbon shells (NPC), constructing a stable composite structure known as NiCoP@NPC. The highly loaded and uniformly dispersed NiCoP NPs are anchored in‐situ and fully exposed, enabling enhanced electron and ion transport efficiency and thereby boosting pseudocapacitance. The NPC from yeast played a crucial role in mitigating the volume expansion of NiCoP NPs, thereby enhancing the structural stability of the electrode. Consequently, NiCoP@NPC demonstrated a high Na+ storage capacity of 59.70 ± 1.51 mg g−1 at 1.6 V and maintained good cycling stability, retaining over 73.3% of its capacity after 80 cycles at 1.6 V. Scanning transmission X‐ray microscopy (STXM) analysis confirmed the reversible conversion reaction mechanism and the robust structure of NiCoP@NPC before and after the reaction; Density function theory (DFT) and electrochemical quartz crystal microbalance (EQCM‐D) further confirmed that the structural design of NiCoP@NPC promoted electron transport, Na+ adsorption as well as improved cycling stability. This study is intended to provide a new idea for the in‐situ confined synthesis of metal phosphides electrodes with stable performance and structure.

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Porous carbon electrodes from activated wasted coffee grounds for capacitive deionization

Cited by 21 publications

References 48 publications

Water hyacinth as a green and sustainable material for carbon aerogel electrodes utilized in membrane capacitive deionization

Water hyacinth as a green and sustainable material for carbon aerogel electrodes utilized in membrane capacitive deionization

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

Microbial Surface Confined Growth Strategy for the Synthesis of Highly Loaded NiCoP Nanoparticles with Hollow Derived Carbon Shells for Sodium Ion Capture

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