δ-MoN Yolk Microspheres with Ultrathin Nanosheets for a Wide-Spectrum, Sensitive, and Durable Surface-Enhanced Raman Scattering Substrate
δ-MoN Yolk Microspheres with Ultrathin Nanosheets for a Wide-Spectrum, Sensitive, and Durable Surface-Enhanced Raman Scattering Substrate
复制标题
DOI：
10.1021/acs.analchem.1c02181
复制
发表时间：
2021-09-02
影响因子：
7.4
通讯作者：
Xi, Guangcheng
中科院分区：
文献类型：
--
作者：
Li, Yahui;Du, Ruifeng;Xi, Guangcheng
Facing the complex environment of on-site detection, the development of active substrates with wide-spectrum surface-enhanced Raman scattering (SERS) activity is essential. Herein, we report on the low temperature and reproducible synthesis of plasmonic delta-MoN yolk microspheres by in situ-nitriding amorphous MoO2 microspheres at 500 degrees C and 1 atm. The yolk-structured delta-MoN exhibits strong and wide-spectrum surface plasmon resonance and SERS effects and can perform highly selective detection for probes with different absorption wavelengths under excitation of 532, 633, and 785 nm lasers, with a limitation of 10(-11) M and an enhanced factor of 3.6 x 10(7). Moreover, the plasmonic delta-MoN yolk microspheres have high environmental durability, which can maintain high sensitivity in strong acid and alkaline solutions.
