Study of ultrasonic dispersion of graphene nanoplatelets

doi:10.3390/ma12111757

	Study of ultrasonic dispersion of graphene nanoplatelets
	Zhang, Bin; Chen, Tijun
	2019-06-01
发表期刊	Materials
ISSN	1996-1944
卷号	12 期号:11
摘要	Graphene has outstanding mechanical properties due to its unique structure, and is regarded as an ideal reinforcement of metal matrix composites. However, it is always in an agglomerate form due to its large specific surface area, and thus, it must be first dispersed prior to combining with a matrix, and ultrasonic treatment is considered to be the most effective way. In this work, the effects of parameters of tip ultrasonic treatment, such as ultrasonic time, ultrasonic power, solvent kind, and its temperature, on dispersion and structure of graphene nanoplatelets (GNPs) were studied. The results show that increasing ultrasonic time or ultrasonic power can enhance the dispersion and exfoliation effects of GNPs, but also increase fragmentation degree and disorder degree of C-atom distribution simultaneously. Solvents with low temperature, low viscosity, or high surface tension have similar effects to those of increasing ultrasonic time or power. However, for tap water, a high-surface-tension solvent, it has relatively low fragmentation degree, and good dispersion and exfoliation effects due to the hydrophilicity of GNPs. However, ethyl alcohol is a more suitable solvent because it has excellent volatility and inert reaction characteristics with GNPs and matrix alloys besides a good dispersion effect. The GNPs can achieve the expected status when they are ultrasonically treated for 4 h under a power of 960W in EA solvent at 35 °C. © 2019 by the authors.
关键词	Dispersion (waves) Exfoliation (materials science) Graphene Hydrophilicity Organic solvents Surface tension Temperature Ultrasonic equipment Ultrasonics Dispersion effect Exfoliation Fragmentation Fragmentation degree Graphene nanoplatelets Large specific surface areas Reaction characteristics Ultrasonic treatments
DOI	10.3390/ma12111757
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000472638600031
出版者	MDPI AG, Postfach, Basel, CH-4005, Switzerland
EI入藏号	20192507067485
EI主题词	Metallic matrix composites
EI分类号	531 Metallurgy and Metallography - 641.1 Thermodynamics - 753.1 Ultrasonic Waves - 753.2 Ultrasonic Devices - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids
来源库	Compendex
分类代码	531 Metallurgy and Metallography - 641.1 Thermodynamics - 753.1 Ultrasonic Waves - 753.2 Ultrasonic Devices - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/113936
专题	材料科学与工程学院
通讯作者	Chen, Tijun
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Zhang, Bin,Chen, Tijun. Study of ultrasonic dispersion of graphene nanoplatelets[J]. Materials,2019,12(11).
APA	Zhang, Bin,&Chen, Tijun.(2019).Study of ultrasonic dispersion of graphene nanoplatelets.Materials,12(11).
MLA	Zhang, Bin,et al."Study of ultrasonic dispersion of graphene nanoplatelets".Materials 12.11(2019).