Activated graphene with fractal structure for the adsorption of malachite green with high removal rate
- Authors
- Kim, Minyoung; Sharma, Neha; Chung, Jiwon; Yun, Kyusik
- Issue Date
- Jul-2021
- Publisher
- ELSEVIER
- Keywords
- Activated graphene; Adsorption capacity; Batch adsorption; Kinetic isotherm; Malachite green
- Citation
- Microporous and Mesoporous Materials, v.322
- Journal Title
- Microporous and Mesoporous Materials
- Volume
- 322
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/81506
- DOI
- 10.1016/j.micromeso.2021.111166
- ISSN
- 1387-1811
- Abstract
- In this study, the activated graphene (AG) was applied to remove a malachite green (MG) as an adsorbent. The AG with fractal structure was synthesized at high temperature under a nitrogen (N2) environment. The fractal structure is shaped like a branch that extends apart because the AG is created by the rGO with a thin sheet. The fractal structure allows AG to have a high surface area. The surface area of AG was found to be 1885.7 m2 g−1. Also, it makes many pores of micro, meso-size which improves the quality as compared to traditional activated carbon (AC). Due to these features, the maximum MG adsorption capacity was 791.27 mg L−1 within the contact time at 40 min. Freundlich isotherm and pseudo-second-order were fitted to AG. Moreover, after cleaning with ethanol and deionized water, the recycled AG maintained a 99.44% removal efficiency which suggesting a good reusability. The AG showed better adsorption capacity than commercial AC showing that AG could be utilized as an excellent adsorbent for next-generation owing to its high removal efficiency, eco-friendly nature, and the long-lasting ability for adsorption of MG. © 2021
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Collections - 바이오나노대학 > 바이오나노학과 > 1. Journal Articles
- 바이오나노대학 > 식품생물공학과 > 1. Journal Articles
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