Room Temperature Ammonia Synthesis from Nitrate by Multiphase Heterogeneous Iron-Based Nanocatalyst

ACS Applied Nano Materials 2026

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Authors: Twinkle, Jaidev Kaushik, Pinky Singh, Deepika Saini, Sher Singh Meena, Shyam Kumar Choudhary, Sumit Kumar Sonkar
DOI: 10.1021/acsanm.5c04187
Cited by: 1
References: 47

Abstract

We present a facile methodology for ammonia (NH 3 ) synthesis using a multiphase iron nanocatalyst (r-IOD (Fe@Fe 3 O 4 @Fe 2 O 3 )) under ambient conditions. Structural and physicochemical analyses of r-IOD were conducted using pXRD, Mössbauer spectroscopy, HRTEM, and XPS analyses, where r-IOD features a three-phase composite architecture, enabling room-temperature reduction of nitrate (NO 3 – ) to NH 3 . The NH 3 formation was confirmed by 15 N isotope labeling and 1 H NMR analysis and quantified by UV-Vis spectroscopic analysis. Postreaction UV-DRS and XRD of r-IOD were also analyzed, indicating Fe-redox participation in the process of NO 3 – reduction.

Fields of Study & Subjects

Ammonia Synthesis and Nitrogen Reduction Environmental remediation with nanomaterials Phosphorus and nutrient management

Publication details

Journal / source
ACS Applied Nano Materials
Publisher
American Chemical Society (ACS)
Volume
9
Issue
3
Pages
1334–1339
Publication date
12 January 2026
Language
EN