Figure 3.

XRD spectra. (a) MWNT; (b) FTO glass substrate; (c) ZnO; (d) ZnO/O-MWNT film; (e) ZnO/acid-MWNT film. (M, MWNT; S, FTO substrate (SnO2); Z, ZnO).

Chang et al. Nanoscale Research Letters 2012 7:166   doi:10.1186/1556-276X-7-166
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