Unraveling the coordination structure-performance relationship in Pt₁/Fe₂O₃ single-atom catalyst.

ABSTRACT: Heterogeneous single-atom catalyst (SAC) opens a unique entry to establishing structure-performance relationship at the molecular level similar to that in homogeneous catalysis. The challenge lies in manipulating the coordination chemistry of single atoms without changing single-atom dispersion. Here, we develop an efficient synthetic method for SACs by using ethanediamine to chelate Pt cations and then removing the ethanediamine by a rapid thermal treatment (RTT) in inert atmosphere. The coordination chemistry of Pt single atoms on a Fe₂O₃ support is finely tuned by merely adjusting the RTT temperature. With the decrease in Pt-O coordination number, the oxidation state of Pt decreases, and consequently the hydrogenation activity increases to a record level without lo

SUBMITTER: Ren Y 

PROVIDER: S-EPMC6776505 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature