Preparation and Characterization of Porous Carbon Material from Banana Pseudo-Stem

Md Mahmudur Rahman, Md Enamul Kabir, Md. Mominul Islam, Md Abu Bin Hasan Susan, Muhammed Shah Miran
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Abstract

In this work, pseudo-stem of a banana plant was used as a sustainable and affordable source to prepare porous carbon materials (PCM) on a large scale. After fine treatment, the material was annealed at 500, 600, and 700 °C using a tube furnace under nitrogen flow. The prepared materials were characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). FT-IR spectra show that the broad peak at the range of 1110-1160 cm-1 comes from the superimposed peaks of C-N for a single or more than one functional group which debunks the possibility of generating nitrogen-doped carbon. TEM and SEM analyses confirmed the porous structure of PCM with the pores connected to one, and a spongy structure was observed in the prepared carbon material. XRD analysis revealed that the carbon materials are crystalline. XPS investigation provided information regarding the dimension of which elements are present in the valence states and constituent elements, depicting the presence of a dominant graphitic C1speak at approximately 284 eV, along with a distinct O1s peak at around 532 eV. Additionally, a relatively weaker N1s peak (approximately 400 eV) was observed. Dhaka Univ. J. Sci. 72(1): 63-70, 2024 (January)
利用香蕉假茎制备多孔碳材料并确定其特性
在这项工作中,香蕉假茎作为一种可持续且经济实惠的来源被用来大规模制备多孔碳材料 (PCM)。材料经过精细处理后,在氮气流下使用管式炉在 500、600 和 700 °C 下进行退火。制备的材料通过傅立叶变换红外光谱(FT-IR)、X 射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和 X 射线光电子能谱(XPS)进行了表征。傅立叶变换红外光谱显示,1110-1160 cm-1 范围内的宽峰来自单个或多个官能团的 C-N 叠加峰,这推翻了生成掺氮碳的可能性。TEM 和 SEM 分析证实了 PCM 的多孔结构,孔隙连成一体,并且在制备的碳材料中观察到海绵状结构。XRD 分析表明,碳材料是晶体。XPS 研究提供了元素价态和组成元素的维度信息,显示在大约 284 eV 处存在一个主要的石墨 C1s 峰,以及在大约 532 eV 处存在一个明显的 O1s 峰。此外,还观察到一个相对较弱的 N1s 峰(约 400 eV):63-70,2024 年(1 月)
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