Simple fabrication of a phosphorus‐doped hierarchical porous carbon via soft‐template method for efficient CO2capture
Simple fabrication of a phosphorus‐doped hierarchical porous carbon via soft‐template method for efficient CO2capture
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DOI：
10.1002/sia.7103
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发表时间：
2022-04
影响因子：
1.7
通讯作者：
Lingzhen Gong;Y. Hang;Jinhao Li;Gang Dai;A. Bao
中科院分区：
文献类型：
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作者：
Lingzhen Gong;Y. Hang;Jinhao Li;Gang Dai;A. Bao
多级孔碳因其高比表面积（SSA）、多样的孔结构、可调节的孔隙率和优异的物理化学稳定性而被广泛用作吸附剂、催化剂载体、电极材料等。在碳骨架中引入电负性与碳不同的N、P、S等杂原子，可以改变表面的化学性质和碳基体周围电子云的密度，从而改变CO2分子与表面的相互作用，提高CO2的吸附能力。因此，在碳材料中掺杂杂原子引起了人们的广泛关注。本文采用模板法，以F108（聚乙二醇-聚丙二醇聚乙二醇）为模板，间苯二酚和甲醛溶液为碳源，磷酸为磷源，KOH为活化剂，制备了磷掺杂多级孔碳。通过一系列表征和CO2吸附实验，研究了KOH和模板剂用量对碳材料孔结构的影响。我们得出的结论是，这些磷掺杂的分级多孔碳材料是有前途的二氧化碳吸附剂。
Hierarchical porous carbons are widely used as adsorbents, catalyst supports, electrode materials, and other applications because of their high specific surface area (SSA), varied pore structure, adjustable porosity, and excellent physicochemical stability. Introducing heteroatoms such as N, P, or S, with electronegativities different from that of carbon, into the carbon skeleton can change the chemical properties of the surface and the density of the electron cloud around the carbon matrix, thus altering interactions of CO2molecules with the surface and improving CO2adsorption capacity. Therefore, doping heteroatoms in carbon materials has attracted a great amount of attention. In this paper, the template method was used with F108 (polyethylene glycol–polypropylene glycolpolyethylene glycol) as the template, resorcinol and formaldehyde solutions as the carbon sources, phosphoric acid as the phosphorus source, and KOH as the activator to prepare phosphorus‐doped hierarchical porous carbons. Through a series of characterization and CO2adsorption experiments, the influence of the amount of KOH and template agent on the pore structure of carbon materials was studied. We conclude that these phosphorus‐doped hierarchical porous carbon materials are promising CO2adsorbents.