Can HI/P reduction be used to reduce nitroalkanes and nitroarenes to alkyl amines and aryl amines?
I've never seen the $\ce{HI/P}$ method being used for the reduction of aliphatic or aromatic nitro compounds.


  I learnt from my textbook that heating the nitroalkanes and nitroarenes with $\ce{H2/Pt}$ is sufficient for the above conversion.


I've reduced a lot of nitroarenes to their corresponding amines by catalytic hydrogenation under standard conditions in ethanol (or methanol) over $\ce{Pd/C}$. In the cases I examined, heating wasn't necessary.