PREPARING AND CHARACTERING PT AND PD SINGLE ATOM CATALYSTS ON ZrO2**
Creating metal single atoms on irreducible oxide supports is a challenging but important research area. The purpose of this research is to prepare Pt and Pd single atom catalysts on the Zirconium Hydroxide supports. We prepared Pd catalysts with three different metal loadings on ZrO2 using a wetness impregnating method. In detail, xPt/ZrO2 catalysts (x wt.% =0.2, 0.4 and 0.6 wt.%) and xPd/ZrO2 catalysts (x wt.% = 0.1, 0.2 and 0.4 wt.%) were prepared using Pt(NO3)2 or Pd(NO3)2 solution and Zr(OH)x supports. We then tested our catalyst for single atom structure. To determine the state of Pt sites, in situ DRIFTS of CO adsorption was performed. IR frequencies (e.g., 2090 cm -1) assigned to CO adsorbed on Pt single atoms were observed on the samples. Similarly, IR frequencies (e.g., 2076 cm-1) for CO on Pd single sites were observed. These results indicate that single Pd species are present on the samples. After confirming the catalyst was single atom structure, we then tested to see how the prepared catalysts would deoxygenate certain gases. The gases that were deoxygenated for testing were Nitric Oxide and Carbon Dioxide
Work is supported in part by National Science Foundation grant CHE-1955343.
McCarthy*, Jake; Ye, Kailong; Liu, Fudong; and Hong, Sampyo
"PREPARING AND CHARACTERING PT AND PD SINGLE ATOM CATALYSTS ON ZrO2**,"
Georgia Journal of Science, Vol. 81, No. 1, Article 74.
Available at: https://digitalcommons.gaacademy.org/gjs/vol81/iss1/74