Effect of Oxygen for Enhancing the Gas Storage Performance of Activated Green Carbon

Hyun-Seok Jang, Chang Yeon Lee, Jun Woo Jeon, Won Taek Jung, Won G. Hong, Sang Moon Lee, Haejin Kim, Junyoung Mun and Byung Hoon Kim
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Hyun-Seok Jang: Department of Physics, Incheon National University, Incheon 22012, Korea
Chang Yeon Lee: Department of Energy and Chemical Engineering, Incheon National University, Incheon 22012, Korea
Jun Woo Jeon: Department of Physics, Incheon National University, Incheon 22012, Korea
Won Taek Jung: Department of Physics, Incheon National University, Incheon 22012, Korea
Won G. Hong: Research Center for Materials Analysis, Korea Basic Science Institution, Daejeon 34144, Korea
Sang Moon Lee: Research Center for Materials Analysis, Korea Basic Science Institution, Daejeon 34144, Korea
Haejin Kim: Research Center for Materials Analysis, Korea Basic Science Institution, Daejeon 34144, Korea
Junyoung Mun: Department of Energy and Chemical Engineering, Incheon National University, Incheon 22012, Korea
Byung Hoon Kim: Department of Physics, Incheon National University, Incheon 22012, Korea

Energies, 2020, vol. 13, issue 15, 1-12

Abstract: We investigated the gas storage capacity of thermally carbonized and chemically activated Phyllostachys bambusoides (PB), which is a nature-derived green carbon with an organic porous structure. Samples were thermally treated at 900 °C for 24 h, and then were chemically activated with different amounts of KOH. The pore distribution, surface area, and H 2 storage capacity were measured by N 2 and H 2 gas sorption, up to 847 mmHg (1.13 bar) at 77 K. The CO 2 storage capacity was measured up to 847 mmHg (1.13 bar) at 298 K. The maximum gas storage was shown in the sample activated with 6 times gravimetric ratio of chemical agent. It reached 1.86 wt% for H 2 and 3.44 mmol/g for CO 2 . We used multilateral analysis methods (XRD, XPS, Raman spectroscopy, and scanning electron microscope) to identify the factors influencing gas sorption. We found that the amount of oxygen groups influence the enhancement of gas storage capacity. Moreover, the results showed that PB-based porous activated carbon has the potential to be used as a multirole gas storage material.

Keywords: Phyllostachys bambusoides; chemical activation; porous activated carbon; gas storage; amount of oxygen group (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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