Metal-Metal Oxide Heterostructures from Monodisperse Nanodot Array via Block Copolymer Self-Assembly
발표자
임지수 (충남대학교)
연구책임자
진형민 (충남대학교 유기재료공학과)
초록
내용
Conventional M-MO heterostructured catalysts synthesized via simple methods such as co-precipitation and sol-gel suffer from limited control over particle size and interparticle spacing, leading to non-uniform reaction kinetics and unstable catalytic performance. In this study, we introduce a novel infiltration synthesis strategy based on block copolymer (BCP) self-assembly to fabricate well-ordered M-MO nanoparticle arrays. This approach enables precise spatial control and structural uniformity for various metal-metal oxide combinations. In particular, this versatile strategy allows for the fabrication of diverse M-MO heterostructures, including Pt-, Pd-, Co-, Au-, and Ir-based systems with ZnO, thereby offering tunable functionalities toward desired applications. The resulting Pt-ZnO arrays exhibit enhanced thermal stability and catalytic activity for the hydrogen evolution reaction (HER), significantly outperforming conventional Pt arrays.