Maple leaf (Acer sp.) extract mediated green process for the functionalization of ZnO powders with silver nanoparticles

被引:52
|
作者
Vivekanandhan, Singaravelu [1 ,2 ]
Schreiber, Makoto [2 ,3 ,4 ]
Mason, Cynthia [1 ,2 ]
Mohanty, Amar Kumar [1 ,2 ]
Misra, Manjusri [1 ,2 ]
机构
[1] Univ Guelph, Sch Engn, Guelph, ON N1G 2W1, Canada
[2] Univ Guelph, Dept Plant Agr, Bioprod Discovery & Dev Ctr, Guelph, ON N1G 2W1, Canada
[3] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada
[4] Univ Guelph, Dept Chem, Guelph, ON N1G 2W1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Silver nanoparticles; Biosynthesis; Bioreduction; Functionalization; Photocatalyst; Zinc Oxide; GOLD NANOPARTICLES; BIOLOGICAL SYNTHESIS; BIOREDUCTION; REDUCTION; FUNGUS; IONS;
D O I
10.1016/j.colsurfb.2013.08.033
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
The functionalization of ZnO powders with silver nanoparticles (AgNPs) through a novel maple leaf extract mediated biological process was demonstrated. Maple leaf extract was found to be a very effective bioreduction agent for the reduction of silver ions. The reduction rate of Ag+ into Ag-0 was found to be much faster than other previously reported bioreduction rates and was comparable to the reduction rates obtained through chemical means. The functionalization of ZnO particles with silver nanoparticles through maple leaf extract mediated bioreduction of silver was investigated through UV-visible spectrophotometry, transmission electron microscopy (TEM), and X-ray diffraction analysis. It was found that the ZnO particles were coated with silver nanoparticles 5-20 nm in diameter. The photocatalytic ability of the ZnO particles functionalized with silver nanoparticles was found to be significantly improved compared to the photocatalytic ability of the neat ZnO particles. The silver functionalized ZnO particles reached 90% degradation of the dye an hour before the neat ZnO particles. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:169 / 175
页数:7
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