Preparation, Characterization, and Mechanistic Understanding of Pd-Decorated ZnO Nanowires for Ethanol Sensing

Figure 2

(a) Top-view and (b) side-view SEM images of ZnO-NWs grown on the substrate, (c) magnified top-view SEM images of ZnO-NWs and (d) Pd-ZnO-NWs (the inserted image shows the nanoparticles of Pd on ZnO-NWs), (e) EDS spectrum of Pd-ZnO-NWs, and (f) the XRD spectra of ZnO-NWs and Pd-ZnO-NWs.