Ultrasonication-assisted synthesis of high aspect ratio gold nanowires on a graphene template and investigation of their growth mechanism

Wenbo Xin; Igor M De Rosa; Yang Cao; Xunqian Yin; Hang Yu; Peiyi Ye; Larry Carlson; Jenn-Ming Yang

doi:10.1039/c8cc01727a

Ultrasonication-assisted synthesis of high aspect ratio gold nanowires on a graphene template and investigation of their growth mechanism

Chem Commun (Camb). 2018 Apr 19;54(33):4124-4127. doi: 10.1039/c8cc01727a.

Authors

Wenbo Xin¹, Igor M De Rosa, Yang Cao, Xunqian Yin, Hang Yu, Peiyi Ye, Larry Carlson, Jenn-Ming Yang

Affiliation

¹ Department of Materials Science and Engineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, USA. kevin.xwsu.gmail.com.

PMID: 29623328
DOI: 10.1039/c8cc01727a

Abstract

We report a facile synthesis of Au nanowires (AuNWs) with a high aspect ratio (l/D) of up to 5000 on a plasma activated graphene template with ultrasound assistance. We demonstrate that the ultrasonication induced symmetry breaking of Au clusters facilitates the growth of AuNWs from the embryonic stages. Furthermore, the growth mechanism of AuNWs is systematically investigated using high resolution electron transmission microscopy (HRTEM), which reveals the unique role of the defective graphene template in directing the growth of AuNWs.