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Updated: Jan 29, 2026

Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
歪んだPtPdTeナノシートによる安定性1000時間超の工業規模高選択的プラスチックアップグレーディング
Changshuai Shang1,2, Weibin Chen1, Lu Li1
1School of Materials Science and Engineering and Beijing Innovation Centre for Engineering Science and Advanced Technology, Peking University, Beijing, China.
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 mgPt+Pd -1) 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-2). The scale-up electrolyzer can achieve GA electrosynthesis with a record yield rate of 5.04 mmol cm-2 h-1 and a very high initial current density of over 800 mA cm-2 from the upgrading of PET. Our new strategy can produce 422.36 g of terephthalic acid, 904.08 g of Na2SO4, and 112.69 g of GA from 500 g of PET with a profit of about $880.23 ton-1 PET. Besides, PtPdTe-a is highly efficient for ethanol oxidation into acetic acid with excellent selectivity.
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