Ni Chuyi, O'Connor Kevin M, Trach Jonathan, Butler Cole, Rieger Bernhard, Veinot Jonathan G C
Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada.
WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University Munich, Lichtenbergstraße 4, 85748 Garching, Germany.
Nanoscale Horiz. 2023 Aug 21;8(9):1217-1225. doi: 10.1039/d3nh00178d.
The unique solid-solution structure and multi-element compositions of high-entropy alloy nanoparticles (HEA NPs) have garnered substantial attention. Various methods have been developed to prepare a diverse array of HEA NPs using different substrates for support and stabilization. In this study, we present a facile surface-mediated reduction method to prepare HEA NPs (AuAgCuPdPt) decorated germanane (HEA NPs@GeNSs), and employ X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) to characterize their structure, composition, and morphology. Subsequently, we demonstrate that the HEA NPs can be liberated from the surfaces of GeNSs as freestanding systems straightforward exposure to UV light. We also explore germanium nanoparticles (GeNPs) as an alternative substrate for HEA NP formation/production, given their similarity to germanane and their Ge-H surface. Finally, we extend our investigation to bulk Ge wafers and demonstrate successful deposition of HEA NPs.
高熵合金纳米颗粒（HEA NPs）独特的固溶体结构和多元素组成已引起了广泛关注。人们已开发出各种方法，使用不同的载体来支撑和稳定，制备出各种各样的HEA NPs。在本研究中，我们提出了一种简便的表面介导还原方法来制备装饰有锗烷的HEA NPs（AuAgCuPdPt@GeNSs），并采用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）和透射电子显微镜（TEM）来表征其结构、组成和形态。随后，我们证明，通过直接暴露于紫外光下，HEA NPs可以从GeNSs表面释放出来，成为独立的体系。鉴于锗纳米颗粒（GeNPs）与锗烷的相似性及其Ge-H表面，我们还探索了将其作为形成/生产HEA NPs的替代载体。最后，我们将研究扩展到块状锗晶片，并证明成功沉积了HEA NPs。
