Fabrication of single-crystalline gold nanowires on cellulose nanofibers

被引：13

作者：

He, Hui ^{[1
]}

Chen, Ruoyang ^{[1
]}

Zhang, Liyuan ^{[1
,2
]}

Williams, Timothy ^{[3
]}

Fang, Xiya ^{[3
]}

Shen, Wei ^{[1
]}

机构：

[1] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia

[2] Wuhan Text Univ, Sci & Technol Inst, Natl Local Joint Engn Lab Adv Text Proc & Clean P, Jiangxia 430200, Hubei, Peoples R China

[3] Monash Univ, Monash Ctr Electron Microscopy, Clayton, Vic 3800, Australia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2020年 / 562卷

基金：

澳大利亚研究理事会;

关键词：

Cellulose nanofibers (CNF); Gold nanowires (AuNW); Single-crystalline; Kinetic control; Conductive ink; Printed sensors; NANOPARTICLES; REDUCTION; CITRATE; NANOSTRUCTURES; ULTRATHIN; GROWTH;

D O I：

10.1016/j.jcis.2019.11.093

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cellulose nanofibers (CNF) are promising nanomaterials for functional inks and printed sensors, although the potential applications are currently limited by the available functionalization methods. This work outlines a convenient method to grow a novel and highly conductive network of single-crystalline gold nanowires (AuNW) on CNF for use in conductive inks and printed sensors. The CNF are able to reduce Au (Ill) precursors to Au (0) monomers and generate nucleation sites for the subsequent monomer-by-monomer growth of Au nanocrystals; sodium citrate is used to control the reduction kinetics and the crystal growth. The growth of these AuNW/CNF materials is a three-step process of redox reaction, isotropic nucleation and anisotropic crystallization: the morphology and crystal structure of Au nanocrystals on CNF can be controlled by adjusting the reaction temperature and concentrations of citrate and CNF. The AuNW/CNF materials obtained have been formulated into highly conductive and atmospherically stable inks for use in either directly writing or screen printing. We have demonstrated AuNW/CNF-printed sensors with highly controllable electrical conductivity as well as excellent stability against rinsing and immersion by water and ethanol. (C) 2019 Elsevier Inc. All rights reserved.

引用

页码：333 / 341

页数：9

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