栓皮栎软木分级多孔活性炭的制备及对亚甲基蓝的吸附

doi:10.11896/cldb.21090088

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Abstract Cork (Quercus variabilis) has a compact and orderly honeycomb-like cellular structure and high carbon content. It is a high-quality raw material for the preparation of biomass activated carbon. However, the existing cork activated carbon has a single pore structure and low specific surface area, which seriously limits its adsorption effect. How to prepare a hierarchical porous activated carbon with stable structure and high specific surface area is extremely important. In this study, the cork powder of Quercus variabilis was used as raw material and the effect of pretreatment temperature on the honeycomb-like structure of cork cells and the adsorption performance of the prepared activated carbon were explored. At the same time, hierarchical porous cork activated carbon (CACs) with high specific surface area was prepared by adjusting the mass ratios of NaOH and activation temperature and used to adsorb methylene blue (MB) dye. The results show that the best process conditions for preparing cork activated carbon is when the pretreatment temperature is 300 ℃, the mass ratios of NaOH to carbon is 3∶1 and the activation temperature is 800 ℃. The prepared cork activated carbon has the characteristics of high specific surface area (2 312.85 m²/g), large total pore volume (1.40 cm³/g) and large adsorption capacity for MB (850.07 mg/g). This paper shows the potential application prospect of hierarchical porous cork activated carbon as a high-performance and low-cost adsorption material.

Key words： cork activated carbon NaOH activation methylene blue adsorption performance

Published: 25 April 2023 Online: 2023-04-24

CLC number:

TQ424.1

Fund:Scientific Research Project of Education Department of Hunan Province(19A530).

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	WU Xiao
	WEI Xinli
	ZHAO Dong
	ZHAI Wenxiang
	LI Wang

Cite this article:

WU Xiao,WEI Xinli,ZHAO Dong, et al. Preparation of Graded Porous Activated Carbon from Cork and Its Adsorption Properties for Methylene Blue[J]. Materials Reports, 2023, 37(8): 21090088-7.

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http://www.mater-rep.com/EN/10.11896/cldb.21090088 OR http://www.mater-rep.com/EN/Y2023/V37/I8/21090088

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