Hollow Carbon Spheres with Abundant Micropores for Enhanced CO2 Adsorption,Langmuir

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Hollow Carbon Spheres with Abundant Micropores for Enhanced CO2 Adsorption
Langmuir ( IF 3.7 ) Pub Date : 2017-01-27 00:00:00 , DOI: 10.1021/acs.langmuir.6b04131
Xuena Li ₁ , Shiyang Bai ₁ , Zhengjian Zhu ₁ , Jihong Sun ₁ , Xiaoqi Jin ₁ , Xia Wu ₁ , Jian Liu ₂

Affiliation

The interest in the design and controllable fabrication of hollow carbon spheres (HCSs) emanates from their tremendous potential applications in adsorption, energy conversion and storage, and catalysis. However, the effective synthesis of uniform HCSs with high surface area and abundant micropores remains a challenge. In this work, HCSs with tunable microporous shells were rationally synthesized via the hard-template method using resorcinol (R) and formaldehyde (F) as a carbon precursor. HCSs with a very high surface area (1369 m²/g) and abundant micropores (0.53 cm³/g) can be obtained with the assistance of additional inorganic silanes (TEOS) simultaneously with the carbon source (RF). Interestingly, the extra-abundant micropores showed favorable adsorption for CO₂, resulting in a 1.5 times increase in the CO₂ adsorption capacity compared to that of normal HCSs under the same conditions. Meanwhile, these HCSs hold potential for use in the separation of gases such as CO₂ and N₂.

中文翻译：

具有丰富微孔的中空碳球可增强CO ₂吸附

对中空碳球（HCSs）的设计和可控制制造的兴趣源于它们在吸附，能量转换和存储以及催化方面的巨大潜在应用。然而，有效合成具有高表面积和丰富微孔的均相HCS仍然是一个挑战。在这项工作中，使用间苯二酚（R）和甲醛（F）作为碳前体，通过硬模板方法合理地合成了具有可调微孔壳的HCS。借助于额外的无机硅烷（TEOS）以及碳源（RF），可以得到表面积非常大（1369 m ² / g）和微孔丰富（0.53 cm ³ / g）的HCS。有趣的是，过量的微孔对CO _2的吸附良好，与相同条件下普通HCS相比，CO ₂吸附能力提高了1.5倍。同时，这些HCS具有用于分离诸如CO ₂和N ₂的气体的潜力。

更新日期：2017-01-27

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