Mechanism of NO reduction to NH3 on Fe single- and double-atom catalyst active sites supported at graphitic edges: A first-principles study - Reva Budiantono; Kenta Hongo; Ni Luh Wulan Septiani; Muhammad Iqbal; Tetsuya Kida; Adhitya Gandaryus Saputro; Muhammad Haris Mahyuddin (Fuel, 2026)