一锅溶剂热法制备具有不同形貌特征的CdSe量子点负载石墨烯

引用本文: 姜鸿基, 毛炳雪. 一锅溶剂热法制备具有不同形貌特征的CdSe量子点负载石墨烯[J]. 无机化学学报, 2013, 29(11): 2305-2314. doi: 10.3969/j.issn.1001-4861.2013.00.342 shu

Citation: JIANG Hong-Ji, MAO Bing-Xue. One-Pot Step Hydrothermal Synthesis of Nano-Composites Based on Graphene and CdSe Quantum Dots with Different Morphology[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(11): 2305-2314. doi: 10.3969/j.issn.1001-4861.2013.00.342 shu

一锅溶剂热法制备具有不同形貌特征的CdSe量子点负载石墨烯

姜鸿基 ,
毛炳雪

基金项目:
国家科技部重大基础研究计划(No.2009CB930600,2012CB933301) (No.2009CB930600,2012CB933301)

“有机与生物光电子学”教育部创新团队(No.IRT1148) (No.IRT1148)

江苏高校优势学科建设工程和南京邮电大学和江苏省政府留学基金资助项目。

摘要: 利用Hummer氧化法制备了氧化石墨烯,并对氧化石墨烯的NaBH₄化学还原法和乙二胺溶剂热还原法进行了比较,发现用乙二胺还原后可在石墨烯表面引入含氮基团,增加片层间的距离,提高分散性。采用乙二胺溶剂热还原法,发展了一锅法制备CdSe量子点负载石墨烯的简易方法。对CdSe量子点负载石墨烯的表征分析结果显示,氧化石墨烯在负载CdSe量子点的同时自身被还原,氧含量显著减少,而还原后的石墨烯表面引入了含氮基团。考察了反应温度及反应时间的影响,研究结果表明,反应温度的变化对氧化石墨烯的还原过程影响不大,而反应时间的影响相对明显。随着反应时间的延长,氧化石墨烯的还原程度越高,石墨烯表面负载的CdSe量子点则由颗粒逐渐长大成为纳米棒和支化的星状纳米结构。通过调控反应条件可在控制氧化石墨烯还原程度的同时改变石墨烯表面所负载CdSe形貌,这为形貌可控的CdSe量子点负载石墨烯的制备提供了一种有效方法。

关键词:

量子点;石墨烯;复合;水热还原;形貌

English

One-Pot Step Hydrothermal Synthesis of Nano-Composites Based on Graphene and CdSe Quantum Dots with Different Morphology

1.
Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Received Date: 06 March 2013
Fund Project:
国家科技部重大基础研究计划(No.2009CB930600,2012CB933301)

“有机与生物光电子学”教育部创新团队(No.IRT1148)

江苏高校优势学科建设工程和南京邮电大学和江苏省政府留学基金资助项目。

Abstract: Graphene oxides and graphene by using redox method were synthesized and characterized. The properties of graphene obtained by chemical reduction method of NaBH₄ and thermal reduction method in ethylene amine solvent were further compared. It was demonstrated that thermal reduction of graphene oxides in ethylene amine solvent could introduce nitrogen functional groups to the surface of obtained graphene, increase the distance between the film layers and enhance its dispersity. The results demonstrated that graphene oxides were reduced, CdSe quantum dots were loaded simultaneously, and oxygen content as significantly decreased. The change of reaction temperature showed little effects on the reduction of graphene oxides, and longer the reaction time, higher the reduction rate of graphene oxides. With the increase of reaction time, the CdSe quantum dots loaded on the surface of graphene grew into nanorods, nanowires, and even branch-shaped nano structures. By controlling the reaction time and temperature, we can easily control the reduction level of graphene oxides and the morphology of CdSe quantum dots supported on the surface of graphene. In conclusion, an effective method is established to control the properties and morphology of nano-composites based on graphene and CdSe quantum dots by hydro-thermal methods.

Key words:

quantum dots;graphene;composite;hydro-thermal reduction;morphology

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沈阳化工大学材料科学与工程学院沈阳 110142

一锅溶剂热法制备具有不同形貌特征的CdSe量子点负载石墨烯

English

One-Pot Step Hydrothermal Synthesis of Nano-Composites Based on Graphene and CdSe Quantum Dots with Different Morphology

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

一锅溶剂热法制备具有不同形貌特征的CdSe量子点负载石墨烯

English

One-Pot Step Hydrothermal Synthesis of Nano-Composites Based on Graphene and CdSe Quantum Dots with Different Morphology

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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