Cyanide-free preparation of gold nanowires: controlled crystallinity, crystallographic orientation and enhanced field emission

The environmentally friendly preparation of nanomaterials with controlled structural features represents a development trend of nanoscience and nanotechnology. In this work, using a cyanide-free bath, gold nanowires with controlled crystallinity and preferred crystallographic orientation have been p...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2015-01, Vol.5 (41), p.3213-3219
Main Authors: Lyu, Shuangbao, Lei, Dang Yuan, Liu, Wenqiang, Yao, Huijun, Mo, Dan, Chen, Yonghui, Hu, Peipei, Sun, Youmei, Liu, Jie, Duan, Jing Lai
Format: Article
Language:English
Subjects:
Crystallography
Deposition
Field emission
Gold
Nanostructure
Nanowires
Preferred orientation
Single crystals
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The environmentally friendly preparation of nanomaterials with controlled structural features represents a development trend of nanoscience and nanotechnology. In this work, using a cyanide-free bath, gold nanowires with controlled crystallinity and preferred crystallographic orientation have been prepared by electrochemical deposition in home-made polycarbonate ion track-etched templates. Single-crystal and polycrystal gold nanowires with preferred orientations along the [111] and [100] directions have been obtained by selecting fabrication parameters. The influence mechanisms of nanopore diameter, applied voltage, and deposition temperature on structural properties are proposed. In addition, single-crystal nanowires with [100] preferred orientation show enhanced field emission, which may be attributed to their single-crystal structure and the lower work function of loosely packed crystal planes. Gold nanowires with controlled crystallinity and preferred crystallographic orientations have been fabricated in ion track-etched templates using a cyanide-free bath.
ISSN:2046-2069
2046-2069
DOI:10.1039/c5ra00994d