无碱活化的生物质衍生碳:一种适应于多种金属离子的电容脱盐电极材料

doi:10.11896/cldb.21110062

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Abstract As a new and green technology, capacitance desalination has the advantage of low cost and energy consumption. Thereinto, the selection of electrode material is key to this technology. In this work, a low-cost biomass-derived carbon (NC), as the electrode material with excellent desalination efficiency, can construct high permeability mesoporous structure without conventional alkali or molten salt activator usage. All the chemical reagents used in preparation process can be recycled and reused, which is in line with the current theme of green development. Meanwhile, the abundant heteroatomic defects and surface functional groups in biomass-derived carbon afford good hydrophilic and pseudocapacitive properties. A capacitive desalting device, assembled by NC as electrode material, can effectively remove NaCl in brine (Under the voltage of 1.2 V, the adsorption capacity of NaCl could reach 49.3 mg·g^-1), and metal salts as well, such as Cr³⁺, Co²⁺( 78.8% salt ions can be desalted in 20 minutes).

Key words： biomass carbon capacitive desalination non-alkali activation mesoporous

Published: Online: 2023-01-03

CLC number:

TB34

Fund:National Key Research and Development Program (2021YFC2102205) and Sinopec Key Project (321018).

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	Articles by authors
	CAO Zonglun
	SUN Jie
	LIAN Yue
	ZHANG Huaihao

Cite this article:

CAO Zonglun,SUN Jie,LIAN Yue, et al. Biomass-derived Carbon Without Alkali Activation: an Efficient Functional Capacitive Desalination Material for Various Metal Ions[J]. Materials Reports, 2022, 36(24): 21110062-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21110062 OR http://www.mater-rep.com/EN/Y2022/V36/I24/21110062

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