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Ruello, James Laurence A.; Mengesha, Daniel N.; Choi, Yongju; Baye, Anteneh F.; Kim, Hern
Chemosphere (Oxford), January 2024, 2024-01-00, 20240101, Letnik: 347Journal Article
In this study, we demonstrate the preparation of laser-cum KOH-activated porous carbon with tunable ionic states, unique surface chemistry, and physical texture from renewable and environmentally friendly precursors (waste cardboard boxes). The adsorption performance of the engineered adsorbents is examined on the adsorption of methyl blue (MB, anionic) and methylene blue (MeB, cationic). The adsorption mechanism was determined using detailed batch adsorption, and the MB was adsorbed via the formation of ternary complexes, whereas the MeB was adsorbed through cation-π interaction. Furthermore, the non-activated laser-induced carbon (LIC100) and the KOH-activated carbon (KAC(L)) exhibit superior dye adsorption capacities of 9610 (MB) and 1882 mg g−1 (MeB), respectively. To the best of our knowledge, this is the highest ever reported at dye removal in the field of adsorptive dye removal. Langmuir isotherm model and pseudo-second-order are fitted well for both MB and MeB adsorption. Lastly, the carbons generated through this modern technique can be remodeled into a more secure device to obtain clean and microorganism-free water. This study showed the potential of laser-induced carbonization of KOH-activated substrate and provided unique insights into future development for universal dye adsorption and other possible applications. Display omitted •Successful synthesis of waste-derived carbon via laser-induced carbonization.•Utilization of cardboard waste for environmental remediation.•Salt bridge and cation-π adsorption mechanism.•Superior adsorption capacity of 9610 (MB) and 1882 mg g−1 (MeB), respectively.•Ultrafast dye removal performance of LIC100 and KAC(L).
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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