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

CORC > 北京大学 > 城市与环境学院

	Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties
	Zhao, Qing ; Petersen, Elijah J. ; Cornelis, Geert ; Wang, Xilong ; Guo, Xiaoying ; Tao, Shu ; Xing, Baoshan
刊名	CARBON
	2016
关键词	NATURAL ORGANIC-MATTER COLLOIDAL STABILITY ENVIRONMENTAL FATE ECOLOGICAL UPTAKE SORPTION WATER NANOPARTICLES SOILS TRANSPORT IMPACT
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.; Hundreds Talents Program of Chinese Academy of Sciences; CAS Pioneer Hundred Talents Program; USDA-AFRI Hatch program [MAS 00475]; NSFC [41328003]; 111 project [B14001]; Open Foundation of State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences [SKLECRA2015OFP10]; SCI(E); EI; PubMed; ARTICLE; Elijah.petersen@nist.gov; bx@umass.edu; 229-237; 99
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437507]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Zhao, Qing,Petersen, Elijah J.,Cornelis, Geert,et al. Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties[J]. CARBON,2016.
APA	Zhao, Qing.,Petersen, Elijah J..,Cornelis, Geert.,Wang, Xilong.,Guo, Xiaoying.,...&Xing, Baoshan.(2016).Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties.CARBON.
MLA	Zhao, Qing,et al."Retention of C-14-labeled multiwall carbon nanotubes by humic acid and polymers: Roles of macromolecule properties".CARBON (2016).