Industrial-Scale High-Selectivity Plastic Upgrading with Stability Exceeding 1000 h over Distorted PtPdTe Nanosheets.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41603068.
- Also identified by DOI 10.1002/adma.202523545.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
The electrocatalytic ethylene glycol (EG) oxidation to value-added chemicals is highly desirable for profitable resource utilization, yet encounters a low yield rate and poor durability. Herein, a class of highly distorted PtPdTe nanosheets (PtPdTe-a) with modulated electronic states and oxophilicity is prepared by reconstructing layered PtPdTe dichalcogenide and delivers a record mass activity (11.78 A mg<sub>Pt+Pd</sub> <sup>-1</sup>) toward EG oxidation reaction with high glycolic acid (GA) Faradaic efficiency (96.7%). Mechanistic investigations reveal that PtPdTe-a features a strong p-d coupling effect for facilitating the formation and adsorption of hydroxyl adspecies to accelerate the oxidation of carbonyl intermediates, thereby avoiding over-oxidation and switching the pathway toward desired C2 direction. We further demonstrate the unprecedented stability of PtPdTe-a-based electrolyzer for over 1000 h (> 150 mA cm<sup>-2</sup>). The scale-up electrolyzer can achieve GA electrosynthesis with a record yield rate of 5.04 mmol cm<sup>-2</sup> h<sup>-1</sup> and a very high initial current density of over 800 mA cm<sup>-2</sup> from the upgrading of PET. Our new strategy can produce 422.36 g of terephthalic acid, 904.08 g of Na<sub>2</sub>SO<sub>4</sub>, and 112.69 g of GA from 500 g of PET with a profit of about $880.23 ton<sup>-1</sup> PET. Besides, PtPdTe-a is highly efficient for ethanol oxidation into acetic acid with excellent selectivity.