Figure 2.
(a) XRD patterns of Pt@HMSNs, Rh@HMSNs, and Pt0.77Rh1@HMSNs; (b) EDS measurement of Pt0.77Rh1@HMSNs. All materials are prepared by calcination at 500 °C and subsequent reduction by H2 at 200 °C.
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