Preparation of biomass-based carbon nanotubes from bagasse by microwave pyrolysis

doi:10.16085/j.issn.1000-6613.2024-1385

Abstract

Abstract:

The sugarcane bagasse was pretreated with iron nitrate, ferrocene, and cobalt oxalate to prepare sugarcane bagasse catalyst precursor. Bio-based carbon nanotubes (CNTs) were prepared by pyrolysis of bagasse catalyst precursor in a microwave field at a power of 700W, and the microstructure of the CNTs was analyzed by various characterization methods such as X-ray diffractometer, scanning electron microscope, Raman spectroscopy, etc. The results showed that after pretreatment with metal catalysts, the smooth CNTs could be observed on the tube walls of MCN-2 and MCN-3 products. The ratio value of I_D and I_G in Raman spectroscopy was much lower than 1.0, indicating a high degree of graphitization of the prepared CNTs. Compared with bio-char, CNTs had increased crystallinity, structural order, and thermal stability.

Key words: microwave, bio-char, carbon nanotubes, catalyst

摘要：

以蔗渣为原料，采用硝酸铁、二茂铁、草酸钴对蔗渣进行预处理，制备蔗渣-催化剂前体。在微波场中，700W功率下对蔗渣-催化剂前体进行裂解制备生物质基碳纳米管（CNTs），并通过X射线衍射、扫描电子显微镜、拉曼光谱等多种表征方法分析碳纳米管微观结构。结果表明，通过金属催化剂预处理后，MCN-2和MCN-3产品管壁上可以观察到完整且光滑的CNTs。拉曼光谱中I_D与I_G的比值远低于1.0，表明制备的CNTs石墨化程度较高。与生物质炭相比，CNTs的结晶度、结构有序性和热稳定性增加。

关键词: 微波, 生物质炭, 碳纳米管, 催化剂

CLC Number:

LIAO Lifang, WEI Yiling, MAO Chuang, XU Qingli, PENG Lin, ZHENG Yechuan, YAN Yongjie. Preparation of biomass-based carbon nanotubes from bagasse by microwave pyrolysis[J]. Chemical Industry and Engineering Progress, 2025, 44(10): 5697-5702.

廖丽芳, 魏一麟, 毛闯, 许庆利, 彭麟, 郑业川, 颜涌捷. 微波热解蔗渣制备生物质基碳纳米管[J]. 化工进展, 2025, 44(10): 5697-5702.

Figures/Tables 7

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