A highly sensitive and stable SERS substrate using hybrid tungsten dioxide/carbon ultrathin nanowire beams

作者：He, Chenying; Bai, Hua; Yi, Wencai; Liu, Jingyao; Li, Xinshi; Li, Xia; Xi, Guangcheng^*

来源：Journal of Materials Chemistry C, 2018, 6(13): 3200-3205.

DOI：10.1039/c8tc00573g

• ENHANCED RAMAN-SCATTERING
• NANOPARTICLES
• SPECTROSCOPY
• MOLECULES
• UNIFORM
• ARRAYS

Compared to noble metals, semiconductor surface enhanced Raman spectrum (SERS) substrates are much cheaper, but their poor sensitivity and stability limits their applications. Here, we report a remarkable enhancement of Raman signals observed from hybrid WO2/C ultrathin nanowire beams. An outstanding enhancement factor (EF) of 1.3 x 10(6) is achieved, and the lowest detection limit is up to 10(-8) M. More importantly, the new SERS active substrate shows ultrahigh chemical, thermal, and light stabilities. An electromagnetic enhancement model and an interfacial charge transfer model coexist in the new SERS substrate.

• 出版日期2018-4-7
• 单位首都师范大学; 吉林大学; 中国检验检疫科学研究院