与空气退火结合了,有各种各样的尺寸的组织金红石的 IrO2 nanoparticles 用胶体的方法被准备。nanoparticles 在酸的媒介为氧进化反应(OER ) 被用作 electrocatalysts,并且他们的谷物尺寸效果被学习。结果证明随退火的增加,温度,催化剂增加的谷物尺寸,和 voltammetric 费用(electroactive 区域) 和为 OER 的明显的活动减少。在内在的活动和退火的温度之间的关系展出一条火山类型曲线和催化剂在 550 点退火了 ???
Combined with air annealing, rutile-structured IrO 2 nanoparticles with various sizes were prepared using colloidal method. The nanoparticles were used as the electrocatalysts for the oxygen evolution reaction (OER) in acidic media, and their grain size effect was studied. The results show that with the increase in annealing temperature, the grain size of the catalyst increases, and the voltammetric charges (the electroactive areas) and apparent activity for the OER decrease. The relationship between the intrinsic activity and the annealing temperature exhibits a volcano-type curve and the catalyst annealed at 550 ℃ achieved the best result.