Highly efficient and reusable dendritic Fe3O4 magnetic nanoadsorbent for inhibition of bacterial growth

被引：6
作者：
Singh, Sarika [1 ]
Bahadur, D. [2 ,3 ]
机构：
[1] Manipal Univ Jaipur, Dept Chem, Jaipur, Rajasthan, India
[2] Indian Inst Technol, Dept Met Engn & Mat Sci, Mumbai 400076, Maharashtra, India
[3] IIT, Ponda 403401, Goa, India
来源：
SURFACES AND INTERFACES | 2019年 / 17卷
关键词：
Nanoadsorbents; Magnetic nanoparticles; Surface functionalization; Bacterial pathogens; Antibacterial activity; POLY(AMIDOAMINE) DENDRIMERS; ANTIMICROBIAL ACTIVITY; NANOPARTICLES; SILVER; NANOCOMPOSITES; MECHANISM; REMOVAL; SURFACE; IRON;
D O I：
10.1016/j.surfin.2019.100348
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We have demonstrated antibacterial activity of dendritic Fe3O4 magnetic nanoadsorbents (DMNA) against Gram positive (S. aureus, B. subtilis) and Gram negative (E. coli, P. aeruginosa) bacteria. These nanoadsorbents were nearly spherical with an average diameter 10 nm showed superparamagnetic behavior at room temperature with strong field dependent magnetic responsivity. The magnetic nanoadsorbents having terminal amino acids on the shell create exteriors functionalities with high densities of organic moieties (both amine and carboxyl) for capturing of various microorganisms. Depending upon the surface functionality, DMNA has strong antibacterial activity (similar to 97% killing efficiency) towards S. aureus even at very low concentration. In addition, these nanoadsorbents can be used as most efficient, separable and reusable materials for killing bacterial pathogens.
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页数：9
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