Fabrication of Cotton Fiber-derived Self-adherent Formed Porous-carbon Materials

ABSTRACT

In this work, the porous-carbon materials were successful synthesized via pre-oxidation and high-temperature carbonization treatment used the cotton fibers as raw materials. Activated carbon with high adsorption performance was prepared by the ZnCl₂- or K₂CO₃-activated pyrolysis of waste cotton fabric. The structure of as-prepared samples was systematically characterized by FT-IR, XPS, XRD, SEM, and BET. The adsorption performance was measured by using the iodine and methylene blue as the target dyes. The results showed that the products are amorphous structure, and is enriched in oxygen functional groups on the surface. The pore size distribution curves showed that COTTON-C-K is rich in macropores, COTTON-C-KZn are rich in micropore and mesopore, and COTTON-C-Zn contains more micropores. The COTTON-C-KZn showed higher adsorption performance toward the I₂ and MB, with a Q_I2 and Q_MB of 1331and 445 mg/g, respectively, which surpasses that of commercial-activated carbon.

摘要

在本文, 使用废旧棉纤维作为原材料, ZnCl₂ 或K₂CO₃作为活化剂, 通过预氧化和高温碳化处理工艺制备了多孔炭材料, 制得的材料具有良好的吸附性能。通过FT-IR, XPS, XRD, SEM 和 BET等方法对制得的材料结构进行了表征, 并且测试了其对碘和亚甲基蓝的吸附性能。结果表明, 制得的多孔炭具有非晶结构并且含有大量的含氧官能团。样品COTTON-C-K具有丰富的大孔, 样品COTTON-C-Zn具有较多的微孔, 而样品COTTON-C-KZn具有丰富的微孔和介孔, 同时具有良好的吸附性能, 对碘和亚甲基蓝的吸附量分别是 1331mg/g, 445mg/g, 远远高于商业活性炭的吸附量。

KEYWORDS:

• Waste cotton fabric
• carbonization
• recycle
• self-adherent
• porous materials
• adsorption

关键词:

• 废旧棉纤维
• 碳化
• 回收利用
• 自粘结
• 多孔炭材料
• 吸附性能

Acknowledgments

The authors acknowledge the Research Initiation Funds for the returned Chinese scholars (Project No. 2017048) and the Scientific Research Fund of Taiyuan University of Technology for financial support (Project No. 20504020203).

Additional information

Funding

This work was supported by the the Research Initiation Funds for the returned Chinese scholars [Project No. 2017048].