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- W4378072042 abstract "Recently, there have been publications on preparing hybrid materials between noble metal and semiconductor for applications in surface-enhanced Raman scattering (SERS) substrates to detect some toxic organic dyes. However, the use of cuprous oxide/silver (Cu2O/Ag) to measure the trace amounts of methyl orange (MO) has not been reported. Therefore, in this study, the trace level of MO in water solvent was determined using a SERS substrate based on Cu2O microcubes combined with silver nanoparticles (Ag NPs). Herein, a series of Cu2O/Agx (x= 1-5) hybrids with various Ag amounts was synthesized via a solvothermal method followed by a reduction process, and their SERS performance was studied in detail. X-ray diffraction (XRD) and scanning electron microscopy results confirmed that 10 nm Ag NPs were well dispersed on 200-500 nm Cu2O microcubes to form Cu2O/Ag heterojunctions. Using the as-prepared Cu2O and Cu2O/Agx as MO probe, the Cu2O/Ag5 nanocomposite showed the highest SERS activity of all samples with the limit of detection as low to 1 nM and the enhancement factor as high as 4 × 108. The logarithm of the SERS peak intensity at 1389 cm-1 increased linearly with the logarithm of the concentration of MO in the range from 1 nM to 0.1 mM." @default.
- W4378072042 created "2023-05-25" @default.
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- W4378072042 date "2023-05-01" @default.
- W4378072042 modified "2023-10-18" @default.
- W4378072042 title "Synthesis of cuprous oxide/silver (Cu <sub>2</sub> O/Ag) hybrid as surface-enhanced Raman scattering probe for trace determination of methyl orange" @default.
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- W4378072042 doi "https://doi.org/10.1098/rsos.221623" @default.
- W4378072042 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37234497" @default.
- W4378072042 hasPublicationYear "2023" @default.
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