摘要纤文状碳材料是由细菌纤文素和小分子糖经过水热法合成,因其对于重金属具有较高的吸附性,在当今社会具有很高的使用价值。
水热法制备碳材料是近几年才出现的一种新型而环保的方法,是利用生物质(淀粉、纤文素、蔗糖、葡萄糖等)或者天然原料(稻米、树叶等)为前躯体,以水为溶剂,在较低温度下(160°C-200°C)合成得到碳材料的一种方法。水热法制备碳材料不仅成本低廉,操作简单,过程温和,更重要的是,水热法制备的碳材料其表面具有丰富的官能团,这些表面基团的存在使碳材料本身具有良好的亲水性,从而可以有效地吸附金属离子。经过和活性炭以及细菌纤文素对于重金属镉原子吸附量的比较,可以知道合成的纤文状碳材料比活性炭、细菌纤文素能更好的吸附性能。
关键词:细菌纤文素 碳 水热法 吸附 重金属4942
毕业设计说明书(论文)外文摘要
Title Preliminary study of the fibrous carbon material synthesis
Abstract
Fibrous carbon materials is by the bacterial cellulose and carbon after hydrothermal synthetic,because of its heavy metal has higher for the adsorption, in today's society is of high use value.
Hydrothermal preparation of carbon materials in recent years is the emergence of a new and environmentally friendly method, is the use of biomass ( cellulose, starch, sucrose, glucose and other ) or natural materials ( rice, leaf ) as a precursor, with water as the solvent, at lower temperatures (160 degrees C-200C) synthesis of carbon material by a method.Hydrothermal preparation of carbon materials not only low cost, simple operation, mild process , which is more important, hydrothermal preparation of carbon material whose surface has a wealth of functional surface groups, these make the existence of carbon material itself has very good hydrophilicity, which can effectively adsorption metal ions.After and activated carbon and bacterial cellulose for heavy metal cadmium atomic adsorption comparison, can know synthetic fiber, carbon materials than activated carbon, bacterial cellulose can better adsorption performance.
Key words: Bacterial cellulose Carbon Hydrothermal method Adsorption Heavy metal
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