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Low loading and High Activity of Platinum Oxide Nanoclusters Formed by Defect Engineering of a Metal–Organic Framework for Formaldehyde Degradation

Von Wiley-VCH zur Verfügung gestellt

We present a distinct platinum oxide nanocluster (PtOx) consisting of only Pt-O bond by a defect engineered Al-MOF (BIT-72) with superior formaldehyde (HCHO) degradation activity and stability. With only 0.015 wt% Pt loading, PtOx@BIT-72-DE can degrade HCHO with 100% conversion for at least 200 continuous hours under HCHO concentration of 25 ppm and gas hourly space velocity of 60,000 mL g–1 h–1 at room temperature. Furthermore, its specific rate (446 mmol HCHO gPt–1 h–1) is higher than the traditional Pt-based catalysts and the single-atom Pt catalysts. Moreover, the cost of PtOx@BIT-72-DE is lower to 0.0769 $ g–1, which can significantly facilitate its commercial application. This study demonstrates the promising potential of metal-organic frameworks (MOFs) in the design of HCHO degradation catalysts.

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