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

来源：

KUWAIT JOURNAL OF SCIENCE | 2022年 / 49卷 / 02期

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

页数：12