SERS Enhancement of CoSe2 Nanocages via Biphase Junction Strategy DOI Open Access

Zhang Ming-jian,

Xiangyu Meng,

Aochi Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Abstract Semiconductor substrates hold significant promise in surface‐enhanced Raman scattering (SERS) owing to their excellent selectivity and stability, but SERS activity is hampered by inefficient interfacial charge transfer (CT). Here, the CoSe 2 nanocages are constructed biphase junction strategy improve CT efficiency. Electron localization function (ELF) simulations demonstrated that orthorhombic phase (o‐CoSe ) exhibits higher electron delocalization compared cubic (c‐CoSe due its metallicity, facilitating CT. The composition of modulated changing dosage Se, where reduced Se content increases o‐CoSe fraction albeit at expense dispersion surface adsorption sites. Optimizing these competing factors, ‐140 achieved optimal performance, enabling trace detection carcinogenic p‐aminoazobenzene (PAAB) with a limit (LOD) 5 × 10 −8 m . These exhibited homogeneity, long‐term resistance acids/alkalis, demonstrating potential for practical applications complex environments. This work established generalizable engineering amplifying semiconductor substrates, providing critical insights designing high‐performance through crystallographic regulation.

Language: Английский

Special Issue: Nanoprobes and Biomedical Imaging DOI Creative Commons
Dan Ding, Yong Fan, Peng Huang

et al.

Nano Biomedicine and Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
SERS Enhancement of CoSe2 Nanocages via Biphase Junction Strategy DOI Open Access

Zhang Ming-jian,

Xiangyu Meng,

Aochi Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Abstract Semiconductor substrates hold significant promise in surface‐enhanced Raman scattering (SERS) owing to their excellent selectivity and stability, but SERS activity is hampered by inefficient interfacial charge transfer (CT). Here, the CoSe 2 nanocages are constructed biphase junction strategy improve CT efficiency. Electron localization function (ELF) simulations demonstrated that orthorhombic phase (o‐CoSe ) exhibits higher electron delocalization compared cubic (c‐CoSe due its metallicity, facilitating CT. The composition of modulated changing dosage Se, where reduced Se content increases o‐CoSe fraction albeit at expense dispersion surface adsorption sites. Optimizing these competing factors, ‐140 achieved optimal performance, enabling trace detection carcinogenic p‐aminoazobenzene (PAAB) with a limit (LOD) 5 × 10 −8 m . These exhibited homogeneity, long‐term resistance acids/alkalis, demonstrating potential for practical applications complex environments. This work established generalizable engineering amplifying semiconductor substrates, providing critical insights designing high‐performance through crystallographic regulation.

Language: Английский

Citations

0