Vol. 32 No. 4 (2022)

Study of Charge Transfer Contribution to Surface-Enhanced Raman Scattering Activity of Cu\(_2\)O Nano-octahedral Substrate

Thu Trang Tran
Institute of Science and Technology, TNU-University of Sciences, Tan Thinh ward, Thai Nguyen city, Vietnam
Xuan Hoa Vu
Institute of Science and Technology, TNU-University of Sciences, Tan Thinh ward, Thai Nguyen city, Vietnam
Thi Thu Ha Pham
TNU- University of Sciences
Trong Nghia Nguyen
Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
Dac Dien Nguyen
Faculty of Occupational Safety and Health, Vietnam Trade Union University, 169 Tay Son, Dong Da, Hanoi, Vietnam

Published 07-07-2022


  • SERS,
  • charge transfer contribution,
  • octahedral Cu2O nanocrystals

How to Cite

Tran, T. T., Vu, X. H., Thi Thu Ha Pham, Nguyen, T. N., & Nguyen, D. D. (2022). Study of Charge Transfer Contribution to Surface-Enhanced Raman Scattering Activity of Cu\(_2\)O Nano-octahedral Substrate. Communications in Physics, 32(4), 379. https://doi.org/10.15625/0868-3166/16787


In this study, a surface-enhanced Raman scattering (SERS) substrate based on an octahedral cuprous oxide (Cu2O) nanostructure to probe methylene blue (MB) molecules as an analyte chemical has been implemented. Octahedral Cu2O nanocrystals were synthesized by a novel hydrothermal process using only ethylene glycol as both a reductant and organic solvent. The characteristics of Cu2O nanocrystals were well recognized by scanning electron microscope (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), FTIR, and Raman spectroscopy. The mechanism of the SERS surface has been thoroughly investigated and has been shown to involve the contributions of both surface plasmon resonance and charge transfer effects. Using a simple collection rule for SERS bands, the portion of charge transfer processes was estimated to be about 46%.


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