Fig. 2: Synthesis mechanism.

Theoretical adsorption models of NH₃ molecules on the a (101), b (110), and c (200) facets of the rutile-phase IrO₂. d The adsorption energies of NH₃ molecules on the (101), (110), and (200) facets. The Ir, O, and H atoms are represented with the blue, red, and pink circles, respectively.