Illustrating Structural and Electronic Properties of Complex Nanocatalysts

1 Illustrating Structural and Electronic Properties of Complex Nanocatalysts 

Methanol is acknowledged as a highly suitable liquid feedstock for H production due to its high H/C ratio, low sulfur content, wide availability, and easy storage and transportation [60]. Cu/ZnO-based catalysts are important for industrial-scale catalytic production of H from methanol [61]. Lin et al. designed a core-shell 

FIGURE 4.1 TEM images of unsupported Pt NW (a) before, and (b) after accelerated CV test. Insets of (a) and (b) show the corresponding HRTEM images, respectively. Reprinted with permission from Ref. [58]. John Wiley Sons. 

By fitting the Cu 2p3, spectrum of the ZnO NR Cu NPs catalyst (Pig. 4.2), two surface species corresponding to Cu°/Cu and Cu were identified, with the former being more abundant. The absence of any shake-up satellite features at BE above 940 eV further verified a lower oxidation state of copper. The Cu K-edge XANES spectrum of this catalyst was in good agreement with that of copper foil (Pig. 4.2). 

FIGURE 4.2 (a) Cu 2p XPS core level spectra of arrayed ZnO NR Cn NP nanocomposites prepared with different copper decoration concentrations from 0.5 to 3mM 7=normahzed intensity, (b) Cu K-edge XANES spectra of arrayed ZnO NR Cn NP nanocomposites and btrlk reference sample copper foil A = normalized absorbance. Reprinted with permission from Ref. [62]. John WUey Sons. 

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