Plant-Mediated Fabrication and Surface Enhanced Raman Property of Flower-Like Au@Pd Nanoparticles

Daohua Sun; Genlei Zhang; Jiale Huang; Haitao Wang; Qingbiao Li

doi:10.3390/ma7021360

Plant-Mediated Fabrication and Surface Enhanced Raman Property of Flower-Like Au@Pd Nanoparticles

Materials (Basel). 2014 Feb 19;7(2):1360-1369. doi: 10.3390/ma7021360.

Authors

Daohua Sun¹, Genlei Zhang², Jiale Huang³, Haitao Wang⁴, Qingbiao Li⁵

Affiliations

¹ Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China. sdaohua@xmu.edu.cn.
² Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China.
³ Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China. cola@xmu.edu.cn.
⁴ Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China. wht@xmu.edu.cn.
⁵ Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China. kelqb@xmu.edu.cn.

Abstract

The flower-like nanostructures of an Au core and Pd petals with the average size of 47.8 nm were fabricated through the successive reduction of HAuCl₄ and Na₂PdCl₄ at room temperature. During the synthesis, Cacumen Platycladi leaf extract served as weak reductant and capping agent. Characterization techniques such as Energy-dispersive X-ray spectroscopy, UV-Vis spectroscopy, and X-ray diffraction characterizations were employed to confirm that the as-synthesized nanoparticles have the structure of core-shell. The obtained core-shell nanoflowers exhibited good surface enhanced Raman spectroscopic activity with Rhodamine 6G.

Keywords: Cacumen Platycladi; bioreduction; core-shell; nanoflowers.