Figure 1.

Cross-sectional FE-SEM images of TiO2 electrode. It is doped with 5 wt.% of G2 (a), G2 powder (b), TiO2 electrode doped with 5 wt.% of G4 (c), and G4 powder (d).

Hong et al. Nanoscale Research Letters 2013 8:219   doi:10.1186/1556-276X-8-219
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