A facile route to the hierarchical assembly of Au nanoparticles on carbon nanotubes through Cu~（2＋） coordination for surface-enhanced Raman scattering
A facile route to the hierarchical assembly of Au nanoparticles on carbon nanotubes through Cu~（2＋） coordination for surface-enhanced Raman scattering
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DOI：
10.1016/j.cclet.2016.11.031
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发表时间：
2017-03
影响因子：
9.1
通讯作者：
Z. Duan;Xinbao Gao;Tianli Li;Yao Kai;Xu-Ming Xie
中科院分区：
文献类型：
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作者：
Z. Duan;Xinbao Gao;Tianli Li;Yao Kai;Xu-Ming Xie
我们报告了通过 Cu2+ 配位将 Au 纳米颗粒分层组装在羧化碳纳米管 (c-CNT) 上。该路线简便、绿色，可以轻松控制Au纳米粒子的负载密度。 c-CNT基质确保Au纳米粒子的均匀分布，这对于热点的富集同时防止其严重团聚尤为重要。此外，c-CNT基质还由于其表面等离子体共振而有助于电磁增强，并且由于目标分子的吸附而有助于化学增强。与纯金纳米颗粒相比，所得的 Au@c-CNT 纳米杂化物在 SERS 方面表现出显着的协同作用。
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. Thec-CNT matrix ensures uniform distribution of Au nanoparticles, which is particularly important for the enrichment of hot spots while preventing their serious agglomeration. Moreover, thec-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.