Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties

doi:10.1016/j.carbon.2015.12.024

	Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties
	Tao, Shu 2; Zhao, Qing 3,4,6; Petersen, Elijah J.5; Cornelis, Geert 1; Wang, Xilong 2; Guo, Xiaoying 2; Xing, Baoshan 4
刊名	CARBON
	2016-04-01
卷号	99 页码:229-237
ISSN号	0008-6223
DOI	10.1016/j.carbon.2015.12.024
英文摘要	Developing methods to measure interactions of carbon nanotubes (CNTs) with soils and sediments and understanding the impact of soil and sediment properties on CNT deposition are essential for assessing CNT environmental risks. In this study, we utilized functionalized carbon-14 labeled nanotubes to systematically investigate retention of multiwall CNTs (MWCNTs) by 3 humic acids, 3 natural biopolymers, and 10 model solid-phase polymers, collectively termed macromolecules. Surface properties, rather than bulk properties of macromolecules, greatly influenced MWCNT retention. As shown via multiple linear regression analysis and path analysis, aromaticity and surface polarity were the two most positive factors for retention, suggesting retention was regulated by pi-pi stacking and hydrogen bonding interactions. Moreover, MWCNT deposition was irreversible. These observations may explain the high retention of MWCNT in natural soils. Moreover, our findings on the relative contribution of each macromolecule property on CNT retention provide information on macromolecule selection for removal of MWCNTs from wastewater and provide a method for measuring CNT interactions with organic macromolecules. Published by Elsevier Ltd.
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000369069800027
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122433]
专题	中国科学院沈阳应用生态研究所
通讯作者	Petersen, Elijah J.; Xing, Baoshan
作者单位	1.Univ Gothenburg, Dept Chem & Mol Biol, S-41296 Gothenburg, Sweden 2.Peking Univ, Coll Urban & Environm Sci, Lab Earth Surface Proc, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 4.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA 5.NIST, Biosyst & Biomat Div, Gaithersburg, MD 20899 USA 6.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tao, Shu,Zhao, Qing,Petersen, Elijah J.,et al. Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties[J]. CARBON,2016,99:229-237.
APA	Tao, Shu.,Zhao, Qing.,Petersen, Elijah J..,Cornelis, Geert.,Wang, Xilong.,...&Xing, Baoshan.(2016).Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties.CARBON,99,229-237.
MLA	Tao, Shu,et al."Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties".CARBON 99(2016):229-237.