Research Article
Vibrational and Compositional Analysis Associated with the Color of Guadua angustifolia Kunth Variety Bicolor (GAKVB)
Table 1
Raman peaks in the exterior wall of GAKVB identified by compound, wavenumber, and reference.
| Number | Wavenumber (cm−1) GAKVB | Wavenumber (cm−1) | References | Color | Compound |
| 1 | 238.89 | 240 | | Yellow ochre | Fe2O3·H2O + silica, goethite | 1217.39 | 1218 |
[24] | Indian yellow | MgC19H16O11·5H2O | 1598.77 | 1599 | | Indian yellow | MgC19H16O11·5H2O | 2 | 238.89 | 239 |
[25] | Blue | Al2SiO3 | 3 | 379.49 440.6 | 378 432 |
[26, 27] | Blue | Al2O3 | 4 | 379.49 | 383 |
[28] | Yellow ochre | ·H2O ·H2O () | 5 | 394 887.8 | 391 890 |
[29] | | Al2SiO5 | 6 | 394.29 | 393-392 |
[30] | | Fe–O–Fe/–OH goethite | 7 | 904.6 | 907 |
[31] | Brown | γ-Fe2O3 | 8 | 1598.77 | 1598 |
[32] | | LADH/NADH/N-cyclohexylformamide | 9 | 2099.12 | 2102 |
[33, 34] | Prussian blue | FeFe(CN)63·4H20 |
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