Park Yong-Kyun, Yoo Sang-Hoon, Park Sungho
Department of Chemistry, BK21 School of Chemical Materials Science and SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, South Korea.
Langmuir. 2008 Apr 15;24(8):4370-5. doi: 10.1021/la703169e. Epub 2008 Mar 7.
This study demonstrates a novel approach to synthesis methods for core-shell nanoparticle assembly using nanoparticle trapping at an interface and subsequent transfer onto a substrate for electrochemical ultrathin layer coating. The transferred nanoparticle array can have a tunable surface area depending on the number of transferred layers. Subsequently coating the surface with Pt-group metals that behave as an ultrathin film provides electrocatalytic activities with respect to a variety of chemical reactions, depending on the properties of the selected coating materials. The transferred 3D Au nanoparticle arrays act as a high-surface-area platform for the diversity of overlayer materials. The resulting 3D core-shell nanoparticle films could be utilized as a highly active electrocatalysis and Raman scattering substrate. The approach provides a versatile and convenient synthesis route to new nanoporous material with tailorable pore structure and material properties through bottom-up assembly.
本研究展示了一种用于核壳纳米颗粒组装合成方法的新途径，该方法利用纳米颗粒在界面处捕获，随后转移到基底上以进行电化学超薄层涂层。转移的纳米颗粒阵列可根据转移层数具有可调的表面积。随后用作为超薄膜的铂族金属涂覆表面，根据所选涂层材料的性质，可提供针对各种化学反应的电催化活性。转移的三维金纳米颗粒阵列作为覆盖层材料多样性的高表面积平台。所得的三维核壳纳米颗粒薄膜可作为高活性电催化和拉曼散射基底。该方法通过自下而上的组装提供了一种通用且便捷的合成路线，可制备具有可定制孔结构和材料性能的新型纳米多孔材料。
