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- W2018776872 abstract "Mesoporous carbon with a narrow pore size distribution centered at about 9 nm, which was prepared by self assembly of block copolymer and phloroglucinol-formaldehyde resin via the soft-template method, was activated by CO2 and potassium hydroxide (KOH). The effects of activation conditions, such as the temperature, activation time, and mass ratio of KOH/C, on the textural properties of the resulting activated mesoporous carbons were investigated. Activated mesoporous carbons exhibit high BET specific surface areas (up to ∼ 2000 m2 g−1) and large pore volumes (up to ∼ 1.6 cm3 g−1), but still maintain a highly mesoporous structure. Heat treatment of mesoporous carbons by CO2 generally requires a moderate to high extent of activation in order to increase its BET surface area by 2–3 times, while KOH activation needs a much smaller degree of activation than the former to reach an identical surface area, ensuring high yields of activated mesoporous carbons. In addition, KOH activation allows a controllable degree of activation by adjusting the mass ratio of KOH/C (2–8), as evidenced by the fact that surface area and pore volume increase with the mass ratio of KOH/C. The electrosorption properties of activated mesoporous carbons were investigated by cyclic voltammetry in 0.1 M NaCl aqueous solutions. Upon activation, the electrosorption capacitance of activated mesoporous carbons was greatly enhanced." @default.
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- W2018776872 date "2010-01-01" @default.
- W2018776872 modified "2023-09-26" @default.
- W2018776872 title "Preparation of activated mesoporous carbons for electrosorption of ions from aqueous solutions" @default.
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- W2018776872 doi "https://doi.org/10.1039/b925957k" @default.
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