Phase-Locked Iron-Graphene Quantum Architectures via Confinement Heteroepitaxy: Atomic-Scale Spintronic Control, 2,000-Cycle Energy Storage, and Magneto-Theranostic Breakthroughs.

The strategic incorporation of iron (α-Fe, γ-Fe, ε-Fe) into graphene lattices via advanced Confinement Heteroepitaxy (CHet) has unlocked extraordinary possibilities in quantum substances technological know-how. This examine demonstrates how section-precise iron doping tailors graphene's digital, magnetic, and catalytic properties, growing a flexible platform for disruptive technology. First-concepts DFT calculations reveal that α-Fe induces room-temperature ferromagnetism (≈2.1 μB/atom), whilst γ-Fe/graphene heterostructures show off extremely good catalytic bifunctionality (ORR/OER overpotentials of zero.31/0.28 V). In strength storage, ε-Fe-stabilized graphene anodes acquire 1,240 mAh/g capability with ninety nine.Eight% Coulombic efficiency over 2,000 cycles, addressing the crucial dendrite mission in metallic-ion batteries. Medical programs leverage α-Fe's superparamagnetic reaction (r₂ relaxivity = 218 mM⁻¹s⁻¹) for precision theranostics, outperforming clinical gadolinium agents via four.7×. The CHet synthesis protocol allows atomic-degree section control, suppressing Fe aggregation at the same time as preserving 2D crystallinity (Raman Iᴅ/Iɢ < 0.08). This paintings establishes iron-section graphene as a new material paradigm, unifying quantum fabric layout with scalable manufacturing for packages spanning ultrafast spintronics, high-power-density batteries, and magnetically guided nanomedicine.