A facile route to the hierarchical assembly of Au nanoparticles on carbon nanotubes through Cu2+ coordination for surface-enhanced Raman scattering

• Published in: Chinese chemical letters Vol. 28; no. 3; pp. 521 - 524
• Main Authors: Duan, Zhi-Qiang, Gao, Xin-Bao, Li, Tian-Peng, Yao, Kai, Xie, Xu-Ming
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2017
• Subjects: Au nanoparticles; Carbon nanotubes; Coordination; Hierarchical assembly; Surface-enhanced Raman scattering; Carbon nanotubes; Au nanoparticles; Coordination; Surface-enhanced Raman scattering; Hierarchical assembly
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2016.11.031

[Display omitted] We report the hierarchical assembly of Au nanoparticles on carboxylized carbon nanotubes (c-CNTs) through Cu2+ coordination. The resulting Au@c-CNT nanohybrids exhibit a remarkable synergy in SERS compared to neat Au nanoparticles. We report the hierarchical assembly of Au nanoparticles on carboxylized carbon nanotubes (c-CNTs) through Cu2+ coordination. This route is facile and green, and can easily control the loading density of Au nanoparticles. The c-CNT matrix ensures uniform distribution of Au nanoparticles, which is particularly important for the enrichment of hot spots while preventing their serious agglomeration. Moreover, the c-CNT matrix also contributes to the electromagnetic enhancement due to its surface plasmon resonance, and the chemical enhancement due to the adsorption of the target molecules. The resulting Au@c-CNT nanohybrids exhibit a remarkable synergy in SERS compared to neat Au nanoparticles.