Harnessing sustainable N-doped activated carbon from walnut shells for advanced all-solid-state supercapacitors and targeted Rhodamine B dye adsorption DOI Creative Commons
Ahmad Husain, Khalid Ansari, Dhiraj K. Mahajan

et al.

Journal of Science Advanced Materials and Devices, Journal Year: 2024, Volume and Issue: 9(2), P. 100699 - 100699

Published: March 4, 2024

This research introduces a novel approach to repurposing walnut shells, an abundant agricultural waste, for the synthesis of sustainable nitrogen-doped activated carbon (N@AC). The resulting material exhibits remarkable properties suitable dual applications in high-performance all-solid-state supercapacitors and efficient Rhodamine B dye (RhB) adsorption. In three-electrode setup, N@AC electrode impressive specific capacitance 484.6 F g-1 at 1 A long-term stability, maintaining 97.4% its initial performance even after 5000 charge-discharge cycles. Simultaneously, symmetric supercapacitor configuration (N@AC//N@AC) demonstrates outstanding capacitance, registering 168.8 g-1, accompanied by favourable rate capability 67.3% 10 g-1. Notably, N@AC//N@AC attains high energy density 39.8 WhKg−1 Furthermore, cyclic retaining 83.91% 10,000 Moreover, adsorption efficiency toward RhB is scrutinized, highlighting efficacy addressing environmental remediation challenges. porous architecture nitrogen functionalities play crucial role expeditiously eliminating organic pollutants from aqueous solutions, offering treating wastewater. Optimal conditions highest are identified: pH 7.2, contact duration 180 min, concentration 20 mgL−1. Thermodynamic evaluations, encompassing determination ΔH◦, ΔS◦, signify endothermic spontaneous nature process. desorption investigations, it noted that H2O, employed as eluting agent, proficiently releases 87.35% adsorbed dye.

Language: Английский

Enhanced removal of Ni-EDTA by three-dimensional electro-Fenton process using Fe-N-doped biochar as catalytic particle electrodes DOI
Zilong Zhao, Ya-Tao Ren, Shuyu Qi

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 471, P. 144717 - 144717

Published: July 14, 2023

Language: Английский

Citations

24
One-step synthesis of iron and nitrogen co-doped porous biochar for efficient removal of tetracycline from water: Adsorption performance and fixed-bed column DOI
Yu Deng, Tong Xiao,

Ailun She

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 352, P. 119984 - 119984

Published: Jan. 12, 2024

Language: Английский

Citations

14
Dual-use of sodium alginate to prepare sodium algenate -derived carbon dots sodium algenate hydrogel composite for Pb2+ removal DOI

Yuxin Xu,

Yu Li,

Guixin Wang

et al.

Applied Surface Science, Journal Year: 2024, Volume and Issue: 654, P. 159416 - 159416

Published: Jan. 21, 2024

Language: Английский

Citations

14
Nitrogen Removal from Landfill Leachate Using Biochar Derived from Wheat Straw DOI Open Access
Chinenye Adaobi Igwegbe, Michał Kozłowski,

Jagoda Wąsowicz

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(4), P. 928 - 928

Published: Feb. 17, 2024

Landfill leachate (LLCH) disposal poses challenges due to high pollutant concentrations. This study investigates the use of biochar (BC) derived from wheat straw for nitrogen content reduction. Laboratory experiments evaluated BC's adsorption capacity (qm) removal ammonium chloride solution (NH4Cl) and LLCH, along with testing isotherm models. The results demonstrated that BC was more efficient (95.08%) than commercial activated carbon AC (93.11%), blank, in adsorbing NH4Cl. superior performance may be attributed its higher (57.74%) observed through elemental analysis. Lower BC/LLCH LLCH's complex chemical matrix. Langmuir model best described BC/NH4Cl (qm = 0.5738 mg/g). AC/NH4Cl data also fitted into (R2 ˃ 0.9) a qm 0.9469 mg/g, 26.667 mg/g ˂ obtained BC/LLCH; gave using Jovanovich (which follows Langmuir's assumptions). mean energy values estimated AC/NH4Cl, BC/NH4Cl, processes were 353.55, 223.61 kJ/mol, respectively, suggesting they are all chemisorption ion exchange influenced their processes. Freundlich constant (1/n) value suggests average BC/LLCH. followed Harkins-Jura (R2: 0.9992), multilayered (or mesopore filling). In conclusion, shows promising potential landfill remediation, offering capabilities demonstrating compatibility various research lays groundwork further exploration other biochar-based materials addressing environmental associated contamination.

Language: Английский

Citations

14
Harnessing sustainable N-doped activated carbon from walnut shells for advanced all-solid-state supercapacitors and targeted Rhodamine B dye adsorption DOI Creative Commons
Ahmad Husain, Khalid Ansari, Dhiraj K. Mahajan

et al.

Journal of Science Advanced Materials and Devices, Journal Year: 2024, Volume and Issue: 9(2), P. 100699 - 100699

Published: March 4, 2024

This research introduces a novel approach to repurposing walnut shells, an abundant agricultural waste, for the synthesis of sustainable nitrogen-doped activated carbon (N@AC). The resulting material exhibits remarkable properties suitable dual applications in high-performance all-solid-state supercapacitors and efficient Rhodamine B dye (RhB) adsorption. In three-electrode setup, N@AC electrode impressive specific capacitance 484.6 F g-1 at 1 A long-term stability, maintaining 97.4% its initial performance even after 5000 charge-discharge cycles. Simultaneously, symmetric supercapacitor configuration (N@AC//N@AC) demonstrates outstanding capacitance, registering 168.8 g-1, accompanied by favourable rate capability 67.3% 10 g-1. Notably, N@AC//N@AC attains high energy density 39.8 WhKg−1 Furthermore, cyclic retaining 83.91% 10,000 Moreover, adsorption efficiency toward RhB is scrutinized, highlighting efficacy addressing environmental remediation challenges. porous architecture nitrogen functionalities play crucial role expeditiously eliminating organic pollutants from aqueous solutions, offering treating wastewater. Optimal conditions highest are identified: pH 7.2, contact duration 180 min, concentration 20 mgL−1. Thermodynamic evaluations, encompassing determination ΔH◦, ΔS◦, signify endothermic spontaneous nature process. desorption investigations, it noted that H2O, employed as eluting agent, proficiently releases 87.35% adsorbed dye.

Language: Английский

Citations

13