Development of Structure-specific Energy Materials Using Hetero-structured Nanoparticles

通过Pd/ γ - fe2o3异质结构纳米粒子（NPs）和纯Pd NPs的退火，制备了具有不同硬/软体积分数的L10-FePd/ α - fe纳米复合磁体。在773 K下退火形成的硬/软体积比为82/18的样品最大能积为10.3 MGOe。八面体的形成进一步提高了磁性能。对于可见光下的全水分解光催化剂，当将尺寸调整的Rh NPs用作光催化剂（GaN和ZnO的固溶体）时，证明了较小的Rh核比较大的Rh核具有更高的活性。然后，研究了CoxMn3-xO4混合氧化物NPs作为光催化水氧化的新型助催化剂。负载CoxMn3-xO4 NPs的光催化活性比未负载CoxMn3-xO4 NPs的光催化活性高2.6倍。

L10-FePd/alpha-Fe nanocomposite magnets with various hard/soft volume fractions were formed by annealing Pd/gamma-Fe2O3 heterostructured nanoparticles (NPs) and pure Pd NPs. The sample with a hard/soft volume ratio of 82/18 formed by annealing at 773 K had the largest maximum energy product (10.3 MGOe). The formation of an octahedral shape was found to further increase the magnetic properties. As for the photocatalysts for overall water splitting under visible light, when the size tuned Rh NPs were applied for use as cocatalysts in a photocatalyst (solid solution of GaN and ZnO), it was demonstrated that smaller Rh cores gave higher activity than the larger ones. Then, the CoxMn3-xO4 mixed oxide NPs were studied as a new cocatalyst for photocatalytic water oxidation. The photocatalytic activity of the CoxMn3-xO4 NPs-loaded photocatalyst for overall water splitting was 2.6 times higher than that without the CoxMn3-xO4 NPs.