Shape-Dependent Transformation and Translocation of Ceria Nanoparticles in Cucumber Plants

doi:10.1021/acs.estlett.7b00359

	Shape-Dependent Transformation and Translocation of Ceria Nanoparticles in Cucumber Plants
	Xie CJ(谢昌建); Zheng LR(郑黎荣); Zhang J(张静); Zhang, J; Zhang P(张鹏); Ding YY(丁雅韵); Zhang ZY(张智勇); He X(何潇); Ma YH(马宇辉); Zhang, P
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
	2017
卷号	4 期号:9 页码:380-385
ISSN号	2328-8930
DOI	10.1021/acs.estlett.7b00359
文献子类	Article
英文摘要	The association of physicochemical properties of CeO2-NPs (CeO2 nanoparticles) per se with their transformation is not well understood. This study for the first time compared the translocation and transformation of octahedral, cubic, rod, and irregularly shaped CeO2-NPs in hydroponic cucumber plants. Cerium contents in roots were close between different treatments, while the largest amount (153 mg/kg) of Ce accumulated in rod-like CeO2-NP treatments. Transmission electron microscopy and X-ray absorption near edge spectroscopy show that rod CeO2-NPs transformed faster and more than other CeO2-NPs, with nearly 40% of Ce in the form of Ce(III) species in roots (CePO4) and shoots (Ce carboxylates). Rod-like CeO2-NPs transformed to a degree greater than those of the other CeO2-NPs in solution simulating the plant exudates, indicating that rod-like CeO2-NPs have the highest chemical reactivity. These results suggest that the intrinsically different chemical reactivity of differently shaped CeO2-NPs resulted in their different transformation and translocation capacities in plants. This study provides new insight into plant-NP interaction, highlighting the significance of the shape of nanoparticles in assessing their environmental behavior and impacts. We suggest that the influence of shape should be also considered for other nanomaterials and systems in developing an accurate understanding of the nano-bio interactions.
WOS关键词	TERRESTRIAL FOOD-CHAIN ; TROPHIC TRANSFER ; ENGINEERED NANOMATERIALS ; CEO2 NANOPARTICLES ; TOXICITY ; GROWTH ; OXIDE ; SIZE
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000410876500005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284989]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Xie CJ,Zheng LR,Zhang J,et al. Shape-Dependent Transformation and Translocation of Ceria Nanoparticles in Cucumber Plants[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2017,4(9):380-385.
APA	谢昌建.,郑黎荣.,张静.,Zhang, J.,张鹏.,...&Zheng, LR.(2017).Shape-Dependent Transformation and Translocation of Ceria Nanoparticles in Cucumber Plants.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,4(9),380-385.
MLA	谢昌建,et al."Shape-Dependent Transformation and Translocation of Ceria Nanoparticles in Cucumber Plants".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 4.9(2017):380-385.