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. 2016 May 16;6:25824. doi: 10.1038/srep25824

Figure 2. Comparison of fresh and recovered GO samples from oxidative C–H coupling.

Figure 2

(a) Mass balance of the reaction, and characterization of fresh GO (oxygen content: 41.1 wt%), and recovered GO after the oxidative C–H coupling reaction; (b) solid state 13C NMR spectra, (c) IR spectra, (d) XPS C1s region of fresh GO, and (e) XPS C1s region of recovered GO. (f) ESR spectra of (i) GO (O: 50.7 wt%), (ii) GO with 3,4-dimethoxytoluene and BF3·OEt2, (iii) GO with 3,4-dimethoxytoluene, and (iv) GO with BF3·OEt2.