Alternative assessment of nano-TiO2 sedimentation under different conditions based on sedimentation efficiency at quasi-stable state

doi:10.1007/s11051-015-3250-8

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水污染过程与治理研究中心

	Alternative assessment of nano-TiO2 sedimentation under different conditions based on sedimentation efficiency at quasi-stable state
	He, Guang'an 1; Chen, Rui 1; Lu, Shushen 1; Jiang, Chengchun 2; Liu, Hong1,3 ; Wang, Chuan 3
刊名	JOURNAL OF NANOPARTICLE RESEARCH
	2015-11-26
卷号	17 期号:11 页码:11
关键词	Nano-titanium dioxide Sedimentation behavior Concentration determination Sedimentation efficiency Quasi-stable state
ISSN号	1388-0764
DOI	10.1007/s11051-015-3250-8
通讯作者	Liu, H (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.
英文摘要	The predictable significant increase in manufacture and use of engineered nanoparticles (ENPs) will cause their inevitable release into environment, and the potential harmful effects of ENPs have been confirmed. As representative ENPs, sedimentation behavior of nano-titanium dioxide (n-TiO2) should be better understood to control its environmental risk. In this study, an experimental methodology was established to set the sampling area and sampling time of n-TiO2 sedimentation. In addition, we defined a quasi-stable state and a precise index, i.e., sedimentation efficiency (SE) at this state, to describe the n-TiO2 sedimentation behavior. Both alternative concentration determination and conventional sizemeasurement were applied to evaluate the sedimentation behavior of n-TiO2 with fulvic acid. Results showed that the sedimentation behavior described by SE was more precise and in disagreement with those predicted by particle size. Moreover, sedimentation experiments with salicylic acid (SA), under an electric field and different water temperatures or with sulfosalicylic acid under light irradiation were also performed. When the total organic carbon concentration of SA, the voltage of working electrodes, and water temperature increased, or the wavelength of light source decreased, the SE of n-TiO2 increased and n-TiO2 showed a tendency to settle in water. These findings might be important for deepening the understanding of n-TiO2 environmental behavior and exploring sedimentation behavior of other ENPs.
资助项目	National Natural Science Foundation of China[21067004] ; National Natural Science Foundation of China[51378494] ; National Natural Science Foundation of China[51378316] ; Shenzhen Science and Technology Innovation Committee[JCYJ20130331151242230] ; CAS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000365762500003
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/2055]
专题	水污染过程与治理研究中心
通讯作者	Liu, Hong
作者单位	1.Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China 2.Shenzhen Polytech, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	He, Guang'an,Chen, Rui,Lu, Shushen,et al. Alternative assessment of nano-TiO2 sedimentation under different conditions based on sedimentation efficiency at quasi-stable state[J]. JOURNAL OF NANOPARTICLE RESEARCH,2015,17(11):11.
APA	He, Guang'an,Chen, Rui,Lu, Shushen,Jiang, Chengchun,Liu, Hong,&Wang, Chuan.(2015).Alternative assessment of nano-TiO2 sedimentation under different conditions based on sedimentation efficiency at quasi-stable state.JOURNAL OF NANOPARTICLE RESEARCH,17(11),11.
MLA	He, Guang'an,et al."Alternative assessment of nano-TiO2 sedimentation under different conditions based on sedimentation efficiency at quasi-stable state".JOURNAL OF NANOPARTICLE RESEARCH 17.11(2015):11.