| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1413961 | Carbon | 2014 | 9 Pages |
Abstract
A low-cost noble metal-free substrate comprised of annealed graphene oxide (GO)/ZnO composites is prepared to demonstrate an efficient chemical surface-enhanced Raman scattering effect. A high enhancement factor of about 104, better than those reported for reduced GO (rGO)/Au and GO/Ag composites, is mainly attributed to the unusually abundant oxygen-containing groups generated on surface of rGO by coupling with ZnO nanoparticles at moderate temperature. High-resolution transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy are employed to examine the evolution of ZnO as well as reduction and functionalization of GO after different heat treatments.
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Authors
Ruey-Chi Wang, Ya-Chun Chen, Shu-Jen Chen, Yu-Ming Chang,