文献类型： 外文期刊

作者： Huo, Can ¹ ; Khoshnamvand, Mehdi ² ; Liu, Pengle ¹ ; Yuan, Chun-Gang ¹ ; Cao, Weiping ⁴ ;

作者机构： 1.North China Elect Power Univ, Dept Environm Sci & Engn, Baoding 071000, Peoples R China

2.Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

4.Hebei Acad Agr & Forestry Sci, Inst Plant Protect, Baoding 071000, Peoples R China

关键词： biosynthesis; silver nanoparticles; catalytic activity; antioxidant properties; antimicrobial characteristic; plant pathogens

期刊名称：MATERIALS RESEARCH EXPRESS （ 影响因子：1.62； 五年影响因子：1.618 ）

ISSN： 2053-1591

年卷期： 2019 年 6 卷 1 期

页码：

收录情况： SCI

摘要： The present investigation was carried out to demonstrate a novel, simple, cost effective, and eco-friendly manner to synthesize silver nanoparticles (AgNPs) by Citrus maxima peel extract as both reducing and capping agents without using any hazardous substance. This process can be rapidly performed at room temperature. Comprehensive techniques were performed to characterize and quantify the biosynthesized AgNPs. Hence, UV-vis spectrum showed the surface plasmon resonance (SPR) band at 430 nm, confirming the formation of AgNPs. TEM image displayed the size of AgNPs ranged from 4 to 11 nm with spherical shapes. The XRD pattern proved the synthesized AgNPs were face-centered cubic (FCC) lattice. Furthermore, the analytical result of FTIR demonstrated that the bioactive compounds such as naringin, naringenin and hesperidin containing O-H functional groups in the extract might be responsible for the synthesis and stabilization of AgNPs. After ultrafilter centrifugation, the ICP-MS revealed yield of AgNPs about 99%. AgNPs showed good catalytic activity by degradation of 4-nitrophenol pollutant. In addition, these AgNPs exhibited appropriate antioxidant properties by scavenging the ABTS and DPPH free radicals due to the existence of biomolecules on surface of AgNPs as natural antioxidants. Finally, this study not only examined the antibacterial activity of AgNPs against Escherichia coli (Gram positive) and Staphylococcus aureus (Gram negative), but also explored the effect of AgNPs on plant pathogens like Fusarium oxysporum and Verticillium dahliae. For the first time, we observed that biosynthesized AgNPs well inhibited the growth of the V. dahliae.