Jump to main content
Jump to site search

Seed-Mediated Phase-Selected Growth of Cu2GeS3 Hollow Nanoparticles with Huge Cavities


Despite significant progress has been achieved on the synthesis of hollow nanoparticles (NPs), research on copper-based multinary chalcogenide (CMC) semiconductor NPs with hollow structures is still less developed. In this work, we demonstrate an effective method for the phase-selected synthesis of cubic Cu2GeS3 hollow NPs (HNPs) with huge cavities and thin shells. This method includes the nucleation of Cu2-xS seeds and the following unequal diffusion between Cu+ and Ge4+. A common rule for the phase-selected growth of CMC NPs has been revealed: the nucleation step is the crystal phase-determining step in the growth process of CMC NPs and the sulfur sources govern the crystal phase of the nucleus. Because of the huge cavities, the as-prepared large Cu2GeS3 HNPs are proved to be the macroporous materials with the specific surface area of 22.1 m2/g. Besides, cubic Cu2GeS3 HNPs with small cavities are also synthesized following the same method with little modification. By integrating the advantages of the large Cu2GeS3 HNPs (high surface-to-volume area) and the small Cu2GeS3 HNPs (well dispersibility and monodispersity), a new kind of two-layer photoelectrode is prepared. Compared with the photoelectrodes prepared by pure large and small Cu2GeS3 HNPs, the two-layer photoelectrode exhibits the superior performance for photoelectrochemistry due to the high interface area of the upper layer and the ideal compactness of the bottom layer.

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Aug 2017, accepted on 12 Sep 2017 and first published on 12 Sep 2017

Article type: Paper
DOI: 10.1039/C7CE01503H
Citation: CrystEngComm, 2017, Accepted Manuscript
  •   Request permissions

    Seed-Mediated Phase-Selected Growth of Cu2GeS3 Hollow Nanoparticles with Huge Cavities

    C. Dong, R. Ge, D. Yao, Z. Wu, Z. Wang, Y. Liu, B. Yang and H. Zhang, CrystEngComm, 2017, Accepted Manuscript , DOI: 10.1039/C7CE01503H

Search articles by author