One-step flame synthesis of hydrophobic silica nanoparticles

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	One-step flame synthesis of hydrophobic silica nanoparticles
	Yue, Renliang 1,2; Meng, Dong 1; Ni, Yong 1; Jia, Yi 1; Liu, Gang 1; Yang, Jie 1; Liu, Haidi 1; Wu, Xiaofeng 1; Chen, Yunfa1
刊名	POWDER TECHNOLOGY
	2013-02-01
卷号	235 期号:0 页码:909-913
关键词	Hydrophobicity Silica (SiO2) Nanoparticles Flame synthesis
英文摘要	Hydrophobic silica (SiO2) nanoparticles are synthesized directly from the combustion of hexamethyldisiloxane (HMDSO) in a co-flow diffusion flame burner, employing diluted Ar flow in a branch to further control the flow rate of the precursors. In this study, it is found that the diluted Ar flow could change the surface wetting properties of the silica products synthesized by flame approach. The morphology of the silica products is observed using SEM, and the particle size is estimated through BET measurement. The results show that the change of diluted Ar flow rate has great influence on the size of the silica particle. With the increase of the flow rate, the particle size decreases dramatically and reach a minimum value of 7 nm at the flow rate of 7 L/min. All the contact angles of the samples prepared at the diluted Ar flow rate of 7 L/min are larger than 120 degrees, suggesting that the surface of sample is hydrophobic. Fourier transformed infrared spectroscopy (FT-IR), Si-29 CP/MAS NMR and C-13 CP/MAS NMR spectroscopy are used to characterize the surface chemistry and grafted group information of silica nanoparticles. It could be concluded that the surface of the silica nanopartides synthesized at Ar flow rate of 7 L/min are modified by methyl groups, which leads to the surface hydrophobicity of silica nanoparticles. (C) 2012 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	SURFACE-MODIFICATION ; SI-29 ; NMR
收录类别	SCI
语种	英语
WOS记录号	WOS:000316039400111
公开日期	2015-05-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13682]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yue, Renliang,Meng, Dong,Ni, Yong,et al. One-step flame synthesis of hydrophobic silica nanoparticles[J]. POWDER TECHNOLOGY,2013,235(0):909-913.
APA	Yue, Renliang.,Meng, Dong.,Ni, Yong.,Jia, Yi.,Liu, Gang.,...&Chen, Yunfa.(2013).One-step flame synthesis of hydrophobic silica nanoparticles.POWDER TECHNOLOGY,235(0),909-913.
MLA	Yue, Renliang,et al."One-step flame synthesis of hydrophobic silica nanoparticles".POWDER TECHNOLOGY 235.0(2013):909-913.