Controllable synthesis of spherical carbon particles transition from dense to hollow structure derived from Kraft lignin

Cao, Kiet Le Anh and Rahmatika, Annie Mufyda and Kitamoto, Yasuhiko and Nguyen, Mai Thanh Thi and Ogi, Takashi (2021) Controllable synthesis of spherical carbon particles transition from dense to hollow structure derived from Kraft lignin. Journal of Colloid and Interface Science, 589. 252 – 263. ISSN 00219797

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Abstract

The tailored synthesis of carbon particles with controllable shapes and structures from biomass as a raw material would be highly beneficial to meet the demands of various applications of carbon materials from the viewpoint of sustainable development goals. In this work, the spherical carbon particles were successfully synthesized through a spray drying method followed by the carbonization process, using Kraft lignin as the carbon source and potassium hydroxide (KOH) as the activation agent. As the results, the proposed method successfully controlled the shape and structure of the carbon particles from dense to hollow by adjusting the KOH concentration. Especially, this study represents the first demonstration that KOH plays a crucial role in the formation of particles with good sphericity and dense structures. In addition, to obtain an in-depth understanding of the particle formation of carbon particles, a possible mechanism is also investigated in this article. The resulting spherical carbon particles exhibited dense structures with a specific surface area (1233 m2 g−1) and tap density (1.46 g cm−3) superior to those of irregular shape carbon particles. © 2020 Elsevier Inc.

Item Type: Article
Additional Information: Cited by: 73
Uncontrolled Keywords: Carbonization; Lignin; Spheres; activated carbon; carbon; distilled water; lignin; nitrogen; potassium hydroxide; Activation agent; Carbonization process; Controllable synthesis; In-depth understanding; KOH concentration; Particle formations; Possible mechanisms; Spray-drying method; adsorption; Article; atmosphere; carbon source; carbonization; density functional theory; desorption; field emission scanning electron microscopy; particle size; priority journal; purification; Raman spectrometry; spray drying; static electricity; surface area; surface tension; synthesis; tapped density; thermogravimetry; transmission electron microscopy; X ray powder diffraction; zeta potential; Potassium hydroxide
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Vocational School
Depositing User: Padmini Isdaryanti Isdaryanti
Date Deposited: 25 Sep 2024 07:25
Last Modified: 25 Sep 2024 07:25
URI: https://ir.lib.ugm.ac.id/id/eprint/7488

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