2015
DOI: 10.3390/ma8125470
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Raman Spectra of Luminescent Graphene Oxide (GO)-Phosphor Hybrid Nanoscrolls

Abstract: Graphene oxide (GO)-phosphor hybrid nanoscrolls were synthesized using a simple chemical method. The GO-phosphor ratio was varied to find the optimum ratio for enhanced optical characteristics of the hybrid. A scanning electron microscope analysis revealed that synthesized GO scrolls achieved a length of over 20 μm with interior cavities. The GO-phosphor hybrid is extensively analyzed using Raman spectroscopy, suggesting that various Raman combination modes are activated with the appearance of a low-frequency … Show more

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Cited by 16 publications
(11 citation statements)
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“…Figure S2a shows RBM modes around 100 and 172 cm −1 , which again confirms the tubular structure of the GO scrolls in our samples. Also, the bands indicating the formation of scrolls are at 920, 1800, and 2000 cm −1 , which are not observed in planar graphene/rGO [ 22 , 23 ]. The band observed at 630 cm −1 can be assigned to the C−S bond, confirming that there is strong interaction between carbon and sulfur [ 24 ].…”
Section: Resultsmentioning
confidence: 99%
“…Figure S2a shows RBM modes around 100 and 172 cm −1 , which again confirms the tubular structure of the GO scrolls in our samples. Also, the bands indicating the formation of scrolls are at 920, 1800, and 2000 cm −1 , which are not observed in planar graphene/rGO [ 22 , 23 ]. The band observed at 630 cm −1 can be assigned to the C−S bond, confirming that there is strong interaction between carbon and sulfur [ 24 ].…”
Section: Resultsmentioning
confidence: 99%
“…These results suggest that the reduction of GO caused fragmentation and yielded smaller rGO graphitic domains with different sizes or recovered graphitic electronic conjugation for rGO. In addition, the rGO–Ag may have been more defective and disordered at active sites for the adsorption of other molecules [ 70 , 71 , 72 , 73 ].…”
Section: Resultsmentioning
confidence: 99%
“…It should be noted that the GFNS exhibited additional peaks at 1860 and 2080 cm –1 . The peak at 1860 cm –1 was ascribed to the combination of the in-plane transverse acoustic (iTA) and the longitudinal optical (LO) phonons such as iTALO, which are not Raman active modes in graphene, but are active in carbon nanotubes due to their peculiar structure; these are known as the M band . The M band is active in the GFNS due to its scroll structure that exhibits properties similar to those of carbon nanotubes.…”
Section: Resultsmentioning
confidence: 99%