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Niobium pentoxide ultra-thin nanosheets: A photocatalytic degradation and recyclable surface-enhanced Raman scattering substrate
Peng, YS; Lin, CL; Tang, M; Yang, LL; Yang, Y; Liu, JJ; Huang, ZR; Li, ZY
2020-04-15
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
SubtypeArticle
AbstractAlthough the traditional SERS metal substrates have high sensitivity, their unrepeatable and ecological environment unfriendly performance greatly limits their applications. Therefore, it is necessary to explore multifunctional SERS substrates with recyclability, photocatalytic degradation, and ultra-sensitive detection ability. Herein, the Nb2O5 ultra-thin nanosheets were successfully synthesized by a simple hydrothermal method. Based on the coupled resonance effect, the SERS sensitivity of Nb2O5 substrates was optimized by the Mo doping process. The SERS enhanced factor EF of Mo-Nb2O5-MV at 1617 cm(-1) with the irradiation laser of 532 nm is determined to 2.09 x 10(7) and the corresponding substrate possesses a low detection limit of 10(-8) M, which can parallel the noble metal SERS substrates without "hot spots". The enhanced Raman signals of MV on Mo-Nb2O5 substrates are mainly originated from photo-induced charge transfer resonance between molecules and semiconductor clusters. It is noticeable that Mo-Nb2O5 ultra-thin nanosheets substrates not only exhibit excellent SERS sensitivity and uniformity but also have recyclability, stability and rapidly photocatalytic degradation ability of dye molecules in visible-light, which expend the application of semiconductor SERS substrates in the detection and treatment of pollutants.
DOI10.1016/j.apsusc.2020.145376
WOS KeywordSERS ; SPECTROSCOPY ; FACILE ; GAP
Language英语
WOS Research AreaChemistry ; Materials Science ; Physics
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28140
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Peng, YS,Lin, CL,Tang, M,et al. Niobium pentoxide ultra-thin nanosheets: A photocatalytic degradation and recyclable surface-enhanced Raman scattering substrate[J]. APPLIED SURFACE SCIENCE,2020.
APA Peng, YS.,Lin, CL.,Tang, M.,Yang, LL.,Yang, Y.,...&Li, ZY.(2020).Niobium pentoxide ultra-thin nanosheets: A photocatalytic degradation and recyclable surface-enhanced Raman scattering substrate.APPLIED SURFACE SCIENCE.
MLA Peng, YS,et al."Niobium pentoxide ultra-thin nanosheets: A photocatalytic degradation and recyclable surface-enhanced Raman scattering substrate".APPLIED SURFACE SCIENCE (2020).
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