| 超声离心工艺制备氧化石墨烯纳米片 |
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| 引用本文： | 张星,罗志佳,张松亭,卢占国,杜宝坛,陈凯,马素俊,张金秋,王婧,王洁,耿宏章.超声离心工艺制备氧化石墨烯纳米片[J].重庆大学学报(自然科学版),2016,39(6):127-134. |
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| 作者姓名： | 张星 罗志佳 张松亭 卢占国 杜宝坛 陈凯 马素俊 张金秋 王婧 王洁 耿宏章 |
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| 作者单位： | 1. 中国石化胜利油田分公司 石油工程技术研究院,山东 东营,257000;2. 天津工业大学 材料科学与工程学院,天津,300387 |
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| 基金项目： | 中国石油化工股份有限公司重点科技攻关项目（P14105），天津市应用基础与前沿技术研究计划重点项目（15JCZDJC37900），天津市科技计划项目（15YFXQGX00070）。 |
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| 摘 要： | 以天然石墨粉为原料，采用改进的 Hummers 法制备氧化石墨烯，将得到的氧化石墨烯水分散液在超声中进行超声破碎，可以得到不同尺寸的氧化石墨烯片，再采用离心工艺进行离心分离，最后得到尺寸分布较窄的氧化石墨烯纳米片。对大量的氧化石墨烯扫描电子显微镜照片进行统计分析发现，通过调整超声功率、超声时间、离心转速和离心时间可以有效地调控得到的氧化石墨烯纳米片的片径尺寸。最后，采用优化后的工艺参数，超声离心工艺制备出了平均片径尺寸约为100 nm 的氧化石墨烯纳米片，其中尺寸小于100 nm 氧化石墨烯纳米片的含量超过了60％。
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| 关 键 词： | 氧化石墨烯 纳米片 超声 离心 |
| 收稿时间： | 8/2/2016 12:00:00 AM |
Synthesis of graphene oxide nanosheets with ultrasonication-centrifugation process |
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| ZHANG Xing,LUO Zhiji,ZHANG Songting,LU Zhanguo,DU Baotan,CHEN Kai,MA Sujun,ZHANG Jinqiu,WANG Jing,WANG Jie and GENG Hongzhang.Synthesis of graphene oxide nanosheets with ultrasonication-centrifugation process[J].Journal of Chongqing University(Natural Science Edition),2016,39(6):127-134. |
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| Authors: | ZHANG Xing LUO Zhiji ZHANG Songting LU Zhanguo DU Baotan CHEN Kai MA Sujun ZHANG Jinqiu WANG Jing WANG Jie and GENG Hongzhang |
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| Institution: | Research Institute of Petroleum Engineering, SINOPEC Shengli Oilfield Company, Dongying 257000, Shangdong, P. R. China,School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, P. R. China,Research Institute of Petroleum Engineering, SINOPEC Shengli Oilfield Company, Dongying 257000, Shangdong, P. R. China,Research Institute of Petroleum Engineering, SINOPEC Shengli Oilfield Company, Dongying 257000, Shangdong, P. R. China,Research Institute of Petroleum Engineering, SINOPEC Shengli Oilfield Company, Dongying 257000, Shangdong, P. R. China,Research Institute of Petroleum Engineering, SINOPEC Shengli Oilfield Company, Dongying 257000, Shangdong, P. R. China,Research Institute of Petroleum Engineering, SINOPEC Shengli Oilfield Company, Dongying 257000, Shangdong, P. R. China,Research Institute of Petroleum Engineering, SINOPEC Shengli Oilfield Company, Dongying 257000, Shangdong, P. R. China,School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, P. R. China,School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, P. R. China and School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, P. R. China |
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| Abstract: | Graphene oxide(GO) was prepared by modified Hummers method utilizing natural graphite powders. The obtained GO was dispersed in water and broken into small pieces with different sizes by ultrasonication. Then, the GO dispersion was separated by centrifugation. At last, more uniform graphene oxide nanosheets were obtained. Through statistical analysis of the size of GO, based on vast of field emission scanning electron microscope (FE-SEM) images, it is can be found that the size of GO could be effectively controlled by adjusting ultrasonication power, ultrasonication time, centrifugation speed and centrifugation time. With the optimized parameters of ultrasonication-centrifugation (UC) process, GO nanosheets with an average size of about 100 nm were synthesized, and the content of GO nanosheets smaller than 100 nm was more than 60%. |
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| Keywords: | graphene oxide nanosheet ultrasonication centrifugation |
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