Bacterial toxicity of exfoliated black phosphorus nanosheets

doi:10.1016/j.ecoenv.2018.06.008

CORC > 沈阳应用生态研究所 > 中国科学院沈阳应用生态研究所 > 沈阳应用生态研究所 > 期刊论文

	Bacterial toxicity of exfoliated black phosphorus nanosheets
	Xiong, Zhiqiang 1; Zhang, Xuejiao 2; Zhang, Siyu 2; Lei, Lei 2,4; Ma, Wei 2,4; Li, Dengyu 2,4; Wang, Weidong 1; Zhao, Qing 2; Xing, Baoshan 3
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2018-10-15
卷号	161 页码:507-514
关键词	Black Phosphorus Bacterial Toxicity Ros Membrane Damage
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2018.06.008
英文摘要	Newly emerged two-dimensional material, black phosphorus (BP) shows promising applications in many fields owing to its superior properties. Despite the biological effects of BP were studied, its environmental impacts have not yet received enough attention. In this study, the bacterial toxicity of exfoliated BP nanosheets was for the first time evaluated against two model bacteria strains, Gram-negative Escherichia coli (E. coli) and Gram-positive Bacillus subtilis (B. subtilis). By monitoring the bacterial growth curve and colony counting, the bacterial toxicity of BP nanosheets was examined. Higher toxicity was induced for Gram-negative E. coli compared to Gram-positive B. subtilis after 6 h treatment, which was reversed at 12 h due to membrane self-healing of E. coli. The bacterial toxicity followed a time- and concentration-dependent fashion, with a maximum bactericidal efficiency of 91.65% and 99.69% for E. coli and B. subtilis, respectively, after 12 h exposure. Reactive oxygen species (ROS)dependent oxidative stress and membrane damage were the main bactericidal mechanisms as proved by fluorescence microscopy, flow cytometry, scanning electron microscopy (SEM), and Lactate dehydrogenase (LDH) assay. This study indicates the potential environmental risk of BP nanosheets and the data from this work will guide their safety applications in the future. 1.
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000439956700061
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/106434]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
通讯作者	Wang, Weidong; Zhao, Qing
作者单位	1.Heilongjiang Bayi Agr Univ, Coll Life Sci & Technol, Heilongjiang Prov Key Lab Environm Microbiol & Re, Daqing 163319, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang, Liaoning, Peoples R China 3.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA 4.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Zhiqiang,Zhang, Xuejiao,Zhang, Siyu,et al. Bacterial toxicity of exfoliated black phosphorus nanosheets[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,161:507-514.
APA	Xiong, Zhiqiang.,Zhang, Xuejiao.,Zhang, Siyu.,Lei, Lei.,Ma, Wei.,...&Xing, Baoshan.(2018).Bacterial toxicity of exfoliated black phosphorus nanosheets.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,161,507-514.
MLA	Xiong, Zhiqiang,et al."Bacterial toxicity of exfoliated black phosphorus nanosheets".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 161(2018):507-514.