What question did this study set out to answer?

The aim is to develop a more effective method for nitrate reduction to dinitrogen while avoiding ammonia formation.

Bypassing Hydrogenation Pathway for Sustainable Nitrate Water Remediation via Direct N─N Coupling

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This research demonstrates efficient nitrate removal in wastewater by bypassing ammonia formation, highlighting new catalytic pathways.

The aim is to develop a more effective method for nitrate reduction to dinitrogen while avoiding ammonia formation.
Engineered a bimetallic Sn3/Pd catalyst with a synergistic interface for nitrate reduction.
Utilized formic acid-driven proton-coupled electron transfer for efficient catalytic nitrate removal.
Assessed performance using operando mass spectrometry and density functional theory calculations.
Achieved 96.5% nitrate removal and 97.4% dinitrogen selectivity under realistic conditions.
Demonstrated a 43.3% reduction in carbon footprint for wastewater treatment processes.
Showed that Sn3 ensembles improve nitrate coupling while hindering undesired ammonia formation.

Zhang et al. (2026) studied this question.

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