Preparation and antibacterial activity of lysozyme and layered double   hydroxide nanocomposites

doi:10.1016/j.watres.2013.09.002

CORC > 北京大学 > 环境科学与工程学院

	Preparation and antibacterial activity of lysozyme and layered double hydroxide nanocomposites
	Yang, Qin-Zheng ; Chang, Ying-Yue ; Zhao, Hua-Zhang
刊名	水研究
	2013
关键词	Lysozyme Layered double hydroxide Intercalation Disinfection Water purification CONTROLLED-RELEASE IMMOBILIZATION BACTERIA REMOVAL ENZYME FUNCTIONALIZATION INTERCALATION NANOMATERIALS DISINFECTION HYDROTALCITE
DOI	10.1016/j.watres.2013.09.002
英文摘要	It is necessary to develop "green" disinfection technology which does not produce disinfection by-products. Lysozyme-layered double hydroxide nanocomposites (LYZ-LDHs) were prepared by intercalating LYZ in LDH for the first time. Their antibacterial activity was evaluated using staphylococcus aureus as a target. The bacteria removal mechanism was also studied. Characterization of LYZ-LDHs by X-ray diffraction and Fourier transform infrared spectroscopy indicated that LYZ was successfully intercalated in LDH, compressed and deformed without secondary structural change. LYZ-LDHs showed excellent bactericidal effectiveness against staphylococcus aureus. The antibacterial performance of LYZ-LDHs was found to be affected by the LYZ/LDH ratio and the pH of the bacteria-containing water. The bacteria removal efficiency of LYZ-LDHs with LYZ/LDH mass ratio of 0.8 was consistently above 94% over the pH range of 3-9. LYZ-LDHs adsorbed bacteria to their surface by LDH and then killed them by the immobilized LYZ. This new material integrated the bactericidal ability of LYZ and adsorption ability of LDH. Moreover, the antibacterial ability of LYZ-LDHs was persistent and not limited by the adsorption capacity. (C) 2013 Elsevier Ltd. All rights reserved.; Engineering, Environmental; Environmental Sciences; Water Resources; SCI(E); EI; PubMed; 5; ARTICLE; 17; 6712-6718; 47
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158787]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yang, Qin-Zheng,Chang, Ying-Yue,Zhao, Hua-Zhang. Preparation and antibacterial activity of lysozyme and layered double hydroxide nanocomposites[J]. 水研究,2013.
APA	Yang, Qin-Zheng,Chang, Ying-Yue,&Zhao, Hua-Zhang.(2013).Preparation and antibacterial activity of lysozyme and layered double hydroxide nanocomposites.水研究.
MLA	Yang, Qin-Zheng,et al."Preparation and antibacterial activity of lysozyme and layered double hydroxide nanocomposites".水研究 (2013).