A facile green synthesis of nanostructured Gold-Silver@Carbon (Au-Ag@C) nano catalyst and its applications

被引:4
|
作者
Kavitha, P. [1 ]
Shanthi, C. [1 ]
Kannan, R. [2 ,3 ]
机构
[1] Sona Coll Technol Autonomous, Dept Phys, Salem 636005, India
[2] Sri KGS Arts Coll, Dept Chem, Srivaikuntam 628612, India
[3] Manonmaniam Sundaranar Univ, Abishekapatti, Tamil Nadu, India
关键词
Bimetallic; catalysis; core-shell; Gold-Silver nanoparticles; nanowire; METAL NANOPARTICLES;
D O I
10.48129/kjs.12649
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this communication, the room-temperature synthesis of gold-silver nano-structures using ascorbic acid (AA) by simple one-step process is reported. Furthermore, the core-shell-type of gold-silver@carbon catalyst (Au-Ag@C) has been derived by microwave irradiation. The surface morphology expresses the neat single metal and bimetal formation. The AA acts as a reductant as well as a stabilizer of metal nanoparticles (MNPs). The microscopic studies reveal the formation of MNPs as quantum dots (similar to 3-5 nm). The excess reductant has been used as a precursor for carbon and in some case it forms as nanowires. The catalyst Au-Ag@C shows the excellent catalytic activity toward 4-nitrophenol reduction at room temperature. The proposed method is facile, fast and eco-friendly for the synthesis of Au-Ag MNPs.
引用
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页数:12
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