Effect of Urea Content on MCDI Performance of Waste-Corn-Stalk-Derived Cellulose Carbon Aerogel

Nguyen, Tuong Vy T.; Nguyen, Ngan Tuan; Nguyen, Van Vien; Nguyen, Thien Hai; Ngo, Hoang Long; Huynh, Le Thanh Nguyen; Le, Huong Thi; Tran, Tri; Ho, Thi Thanh Nguyen; Nguyễn, Thanh Tùng; Le, Viet Hai; Nguyen, Thai Hoang

doi:10.1007/s12221-023-00234-4

Cited by 6 publications

(1 citation statement)

References 55 publications

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“…For this purpose, the most common and widely used material is AC 7 . However, the utilization of other types of carbonaceous materials, especially environmentally friendly ones (e.g., corn-stalk-based 8 , 9 and water hyacinth-based 10 carbon aerogels) as well as conventional ones (e.g., mesoporous carbon 11 , graphene 12 , and carbon nanotubes 13 ), the addition of metal oxide nanoparticles (e.g., TiO 2 14 , SiO 2 , Al 2 O 3 15 , and ZnO 16 ), and conductive polymers (e.g., polyaniline 17 and sulfonated polystyrene 18 ) to the carbonaceous structures of the electrodes were carried out to achieve a higher specific capacity, lower charge transfer resistance, more hydrophilicity, and better wettability. This leads to improved electrochemical performance in the CDI process 19 – 21 .…”

Section: Introductionmentioning

confidence: 99%

Enhanced brackish water desalination in capacitive deionization with composite Zn-BTC MOF-incorporated electrodes

Ghorbanian,

Rowshanzamir,

Mehri

2024

Sci Rep

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In this study, composite electrodes with metal–organic framework (MOF) for brackish water desalination via capacitive deionization (CDI) were developed. The electrodes contained activated carbon (AC), polyvinylidene fluoride (PVDF), and zinc-benzene tricarboxylic acid (Zn-BTC) MOF in varying proportions, improving their electrochemical performance. Among them, the E4 electrode with 6% Zn-BTC MOF exhibited the best performance in terms of CV and EIS analyses, with a specific capacity of 88 F g−1 and low ion charge transfer resistance of 4.9 Ω. The E4 electrode showed a 46.7% increase in specific capacitance compared to the E1 electrode, which did not include the MOF. Physicochemical analyses, including XRD, FTIR, FESEM, BET, EDS, elemental mapping, and contact angle measurements, verified the superior properties of the E4 electrode compared to E1, showcasing successful MOF synthesis, desirable pore size, elemental and particle-size distribution of materials, and the superior hydrophilicity enhancement. By evaluating salt removal capacity (SRC) in various setups using an initially 100.0 mg L−1 NaCl feed solution, the asymmetric arrangement of E1 and E4 electrodes outperformed symmetric arrangements, achieving a 21.1% increase in SRC to 6.3 mg g−1. This study demonstrates the potential of MOF-incorporated electrodes for efficient CDI desalination processes.

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