AI Article Synopsis
- A new air-stable heterometallic complex [BiPt(SAc)5]n was synthesized and analyzed, confirming Bi-Pt bonding and an ionic cage of oxygen atoms.
- The complex was found to effectively reduce CO2 to CO with a high faradaic efficiency (FE) of 92% and a turnover frequency (TOF) of 8 s⁻¹ during electrolysis experiments.
- The reduction mechanism likely involves a favorable pathway through the ionic cage, supported by various advanced analyses and computational data.
Article Abstract
An air-stable heterometallic Bi-Pt complex with the formula [BiPt(SAc)5]n (1; SAc = thioacetate) was synthesized. The crystal structure, natural bond orbital (NBO) and local orbital locator (LOL) analyses, localized orbital bonding analysis (LOBA), and X-ray absorption fine structure (XAFS) measurements were used to confirm the existence of Bi-Pt bonding and an ionic cage of O atoms surrounding the Bi ion. From the cyclic voltammetry (CV) and controlled potential electrolysis (CPE) experiments, 1 in tetrahydrofuran reduced CO2 to CO, with a faradaic efficiency (FE) of 92% and a turnover frequency (TOF) of 8 s-1 after 30 min of CPE at -0.79 V vs. NHE. The proposed mechanism includes an energetically favored pathway via the ionic cage, which is supported by the results of DFT calculations and reflectance infrared spectroelectrochemistry data.
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| http://dx.doi.org/10.1039/c9dt04817k | DOI Listing |
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