Low temperature-boosted high efficiency photo-induced charge transfer for remarkable SERS activity of ZnO nanosheets

Lin, Jie; Yu, Jian; Akakuru, Ozioma Udochukwu; Wang, Xiao-Tian; Yuan, Bo; Chen, Tianxiang; Wu, Aiguo

doi:10.1039/d0sc02712j

Cited by 62 publications

(38 citation statements)

References 50 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…39 ZnO is a high refractive index semiconductor material and shows obvious merits as a SERS substrate. [40][41][42] Wen et al observed the SERS effect of pure ZnO colloids using a cyanine dye D266 as probe molecules in 1996. 43 Researchers have designed and fabricated ZnO nanostructure with various morphologies to realize enhanced SERS activity.…”

Section: Semiconductor Sers Substratesmentioning

confidence: 99%

Semiconductor-based surface enhanced Raman scattering (SERS): from active materials to performance improvement

Wang

Zhang

Shi

et al. 2022

Analyst

View full text Add to dashboard Cite

show abstract

Section: Semiconductor Sers Substratesmentioning

confidence: 99%

Semiconductor-based surface enhanced Raman scattering (SERS): from active materials to performance improvement

Wang

Zhang

Shi

et al. 2022

Analyst

View full text Add to dashboard Cite

show abstract

“…4c), which is likely due to the charge transfer (CT) effect. [60][61][62][63][64] Laser annealing at 5.5 mW with different irradiation times was also performed (Fig. 4f ), which shows the highest SERS signals from the Au@c-TiO 2 with a 30 s laser annealing, followed by a linear decay over time.…”

Section: Surface Enhanced Raman Scattering (Sers) Via Hot Electron Tr...mentioning

confidence: 99%

Plasmon-assisted nanophase engineering of titanium dioxide for improved performances in single-particle based sensing and photocatalysis

Wang

Yao

et al. 2022

Nanoscale

View full text Add to dashboard Cite

show abstract

“…However, novel semiconductors need to be further explored for superior sensitivity. Enhancement of charge transfer (quantum yield) on semiconductors for single-molecule level SERS has drawn considerable attention via further (1) improvement of the photoinduced charge generation [30] and (2) strengthening of the interaction between sites and probe biomolecules [17,[31][32][33]. Furthermore, along these two lines, the understanding of SERS enhancement mechanism could be greatly deepened and enriched.…”

Section: Introductionmentioning

confidence: 99%

Single-atom sites on perovskite chips for record-high sensitivity and quantification in SERS

et al. 2022

View full text Add to dashboard Cite

Surface enhanced Raman scattering (SERS) is a rapid and nondestructive technique that is capable of detecting and identifying chemical or biological compounds. Sensitive SERS quantification is vital for practical applications, particularly for portable detection of biomolecules such as amino acids and nucleotides. However, few approaches can achieve sensitive and quantitative Raman detection of these most fundamental components in biology. Herein, a noble-metal-free single-atom site on a chip strategy was applied to modify single tungsten atom oxide on a lead halide perovskite, which provides sensitive SERS quantification for various analytes, including rhodamine, tyrosine and cytosine. The single-atom site on a chip can enable quantitative linear SERS responses of rhodamine (10 −6 −1 mmol L −1 ), tyrosine (0.06–1 mmol L −1 ) and cytosine (0.2–45 mmol L −1 ), respectively, which all achieve record-high enhancement factors among plasmonic-free semiconductors. The experimental test and theoretical simulation both reveal that the enhanced mechanism can be ascribed to the controllable single-atom site, which can not only trap photoinduced electrons from the perovskite substrate but also enhance the highly efficient and quantitative charge transfer to analytes. Furthermore, the label-free strategy of single-atom sites on a chip can be applied in a portable Raman platform to obtain a sensitivity similar to that on a benchtop instrument, which can be readily extended to various biomolecules for low-cost, widely demanded and more precise point-of-care testing or in-vitro detection. Electronic Supplementary Material Supplementary material is available in the online version of this article at 10.1007/s40843-022-1968-5.

show abstract

Low temperature-boosted high efficiency photo-induced charge transfer for remarkable SERS activity of ZnO nanosheets

Abstract: Improving photo-induced charge transfer (PICT) efficiency is the key factor for boosting surface-enhanced Raman scattering (SERS) performance of semiconductor nanomaterials. Introducing plentiful surface defect states in porous ZnO nanosheets (d-ZnO...

Cited by 62 publications

References 50 publications

Semiconductor-based surface enhanced Raman scattering (SERS): from active materials to performance improvement

Semiconductor-based surface enhanced Raman scattering (SERS): from active materials to performance improvement

Plasmon-assisted nanophase engineering of titanium dioxide for improved performances in single-particle based sensing and photocatalysis

Single-atom sites on perovskite chips for record-high sensitivity and quantification in SERS

Contact Info

Product

Resources

About