Efficient reduction of nitrate to ammonia on an AuPt@ZIF-8 composite film.

Chem Commun (Camb)

College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, 300387 Tianjin, China.

Published: December 2024

AI Article Synopsis

  • * The study introduces a composite film made of AuPt@ZIF-8, using a porous AuPt alloy and a zeolite imidazole framework (ZIF-8) to enhance electrocatalytic nitrate reduction.
  • * This composite film achieves impressive results, yielding 131.5 μg ammonia per hour per milligram, with a faradaic efficiency of 95.8% and a selectivity of 96%, surpassing the performance of other known materials.

Article Abstract

Nitrate reduction represents a sustainable strategy for water denitrification. Herein we design an AuPt@ZIF-8 composite film, coating a zeolite imidazole framework-8 (ZIF-8) on a porous AuPt alloy, for an efficient electrocatalytic nitrate reduction. It exhibits a superior ammonia yield of (131.5 ± 3.4) μg h mg, faradaic efficiency of (95.8 ± 3.0)% and selectivity of 96%, overcoming individual Au, Pt, ZIF-8, and other widely-used Au-based alloys.

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http://dx.doi.org/10.1039/d4cc05045bDOI Listing

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