| 分步插层法制备硝酸盐-硫酸-GIC |
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| 引用本文： | 韩志东,杜鹏,董丽敏,张显友.分步插层法制备硝酸盐-硫酸-GIC[J].新型炭材料,2009,24(4). |
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| 作者姓名： | 韩志东 杜鹏 董丽敏 张显友 |
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| 作者单位： | 哈尔滨理工大学,材料科学与工程学院,黑龙江,哈尔滨,150040 |
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| 基金项目： | 国家自然科学青年基金，黑龙江省自然科学基金(E200613).National Natural Science Foundation of China for the Youth NSFY，Natural Science Foundation of Heilongjiang Province of China |
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| 摘 要： | 通过硫酸、硝酸或硝酸盐分步插层的方法,成功制备了硝酸/硝酸盐-硫酸-GIC三元石墨层间化合物.采用XRD、SEM和EDS对GIC的结构进行了研究.结果表明:与直接插层法相比,分步插层法有利于插层物质的插层反应,充分扩大石墨层间距,形成低阶石墨层间化合物,使膨胀效果更优,膨胀体积高达450mL/g以上;膨胀后GIC的孔结构均匀,层壁较薄,片层结构清晰,膨胀充分.同时,分步插层法能够降低实验操作的危险性,污染小,反应易于控制.
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| 关 键 词： | 分步插层法 石墨层间化合物 硝酸 硫酸 |
Preparation of nitrate-H_2SO_4 -graphite intercalation compounds by a two-step intercalation method |
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| HAN Zhi-dong,DU Peng,DONG Li-min,ZHANG Xian-you.Preparation of nitrate-H_2SO_4 -graphite intercalation compounds by a two-step intercalation method[J].New Carbon Materials,2009,24(4). |
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| Authors: | HAN Zhi-dong DU Peng DONG Li-min ZHANG Xian-you |
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| Abstract: | Ternary graphite intercalation compounds (GICs), nitrate/nitric acid-sulfuric acid-GICs, were prepared by a two-step method. Their structure was characterized by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. Results showed that the two-step method favored the formation of lower stage-GICs by promoting the intercalation of nitrate or nitric acid and enlarging the interlayer spacing. The expanded GICs, whose expansion volume can reach 450 mL/g, showed obvious graphite layers and a uniform porous structure. The two-step method had many advantages compared with the direct intercalation method, such as safety in operation, less pollution during experiments and ease of industrial scale-up. |
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| Keywords: | Two-step intercalation method GIC Nitric acid Sulfuric acid |
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