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An insight into the effect of composition for enhance catalytic performance of biogenic Au/Ag bimetallic nanoparticles

Author:
Leishangthem, Dhaneshor  Yumkhaibam, Md. Amar Khan  Henam, Premananda Singh  Nagarajan, Sankaranarayanan  


Journal:
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY


Issue Date:
2018


Abstract(summary):

A comprehensive knowledge of composition-activity property relationship of nanoparticulate materials is highly desirable for applications in various catalysis reactions. We have addressed a facile green aqueous approach for preparation of Au, Ag monometallic, Au/Ag alloy as well as core-shell bimetallic nanoparticles. The phytochemicals present in lemon grass leaves extract were employed both as natural reducing and capping agents at room temperature. X-ray diffraction pattern, UV-Vis spectroscopy, and energy dispersive X-ray studies confirmed the formation of bimetallic system. The ensuing Au core/Ag shell and Au/Ag alloy bimetallic nanoparticles were crystalline and spherical in nature with identical average diameter of similar to 18nm as measured via transmission electron microscopy. The bimetallic systems incredibly display higher catalytic potential than their monometallic counterparts which were vividly reckoned on structural effect, lattice compression, and synergistic electronic effect.


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