竹炭微结构的研究

Study on the Microstructure of Bamboo Charcoal

以竹材经高温炭化获得的固体产物--竹炭为研究对象,利用X射线衍射分析(XRD)、红外光谱分析(IR)、扫描电镜分析(SEM)、能谱分析(EDS)等测试技术对竹炭结构及形貌进行了研究。研究结果表明,竹炭结构是含石墨微晶的无定型碳结构,基本保持竹材的微观形态,有明显的塌陷现象,细胞壁上的微孔道是竹炭具有较大比表面积的主要原因,导管内壁存在类似层状石墨结构;竹炭主要成分是C和O,并含有K、Si等微量元素。上述研究为长效多功能竹炭制品的开发奠定基础。

Bamboo charcoal is one of solid products of bamboo,and its microstructure and morphology were studied by X-ray diffraction analysis(XRD),infrared microscopy(IR),scanning electronic microscopy(SEM) and EDS.The results show that bamboo charcoal was of amorphous carbon structure with some graphite crystals and could keep the original morpha of bamboo,but it showed some collapses.The high special surface area of bamboo charcoal resulted from the mini-pores on the cell wall,and the canal wall showed graphite structure with the shape of layers.The main elements of bamboo charcoal were carbon and oxygen and it also included many mineral elements,such as K,Si etc.All of the above studies are helpful the further research of functional bamboo charcoal.