J. Mater. Sci. Technol. ›› 2022, Vol. 109: 245-253.DOI: 10.1016/j.jmst.2021.08.029

• Research Article • Previous Articles     Next Articles

Formation of photo-reactive heterostructure from a multicomponent amorphous alloy with atomically random distribution

Hae Jin Parka, Hee Jin Leea, Tae Kyung Kima, Sung Hwan Honga, Wei-Min Wangb, Taek Jib Choia, Ki Buem Kima,*()   

  1. aDepartment of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neung dong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
    bKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
  • Received:2021-06-07 Revised:2021-07-31 Accepted:2021-08-01 Published:2022-05-20 Online:2021-10-08
  • Contact: Ki Buem Kim
  • About author:* E-mail address: kbkim@sejong.ac.kr (K.B. Kim).

Abstract:

In this study, metallic glass is designed tunable for promising functional applications via a facile and stable, one-step process. Creative approach about alloy design and process is based on the unique properties of the Ti-Cu-Ni-Sn metallic glass that are afforded by the varying oxygen affinities of the four constituent elements. This metallic glass exhibits homogeneous nucleation of oxides and uniform formation of the various metal oxides. The alloy design and hydrothermal synthesis to customize the metallic glasses are the most critical factors that determine the characteristics of the metal oxides and the resulting nanostructures and photoelectrode properties. This enables the desired element to be selectively grown via a facile single-step process. These results provide a promising road map for the application of metallic glasses to photoelectrochemical (PEC) solar water splitting, as well as various other new possibilities.

Key words: Metallic glass, Alloy design, Hydrothermal synthesis, Metal oxide, Water splitting