Skeletal Cu7S4 Nanocages Wrapped by Few-Layered Black Phosphorus Nanosheets as an Efficient H2 Production Photocatalyst

P. Bhavani, D. Praveen Kumar, A. Putta Rangappa, Yul Hong, Madhusudana Gopannagari, D. Amaranatha Reddy, Tae Kyu Kim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Superstructures with hollow cage-like hierarchical ordering play a predominant role in various applications owing to their unique properties, such as low density, an interior void, a high surface-to-volume ratio, and excellent permeability for charge and mass transport. Low-cost hollow cage-like copper sulfide superstructures are competitive candidates for optical and electrochemical applications because of their outstanding conductivity and extensive number of active sites. Thus, we synthesized crystallinity-controlled nanotwinned polyhedral-skeletal-type copper sulfide cages (Cu7S4). Further, these cages were wrapped by few-layered black phosphorus (BP) nanosheets using simple strategies and tested for photocatalytic hydrogen production. The BP/Cu7S4 hybrid material exhibited improved hydrogen production, i. e., 0.475 μmol h−1, which was 14-fold greater than that achieved using pristine Cu7S4 cages under optimal conditions. The enhanced activity was attributed to effective charge-carrier separation and transportation owing to the advanced unique properties of skeletal-type Cu7S4 cages and few-layered BP nanosheets. To the best of our knowledge, this is the first report of a BP-nanosheet-wrapped Cu7S4 system for photocatalytic hydrogen production. This system combining skeletal hollow cages with BP nanosheets is a new, fascinating, and inspiring approach for photocatalytic water-splitting applications.

Original languageEnglish
Pages (from-to)304-312
Number of pages9
Issue number1
Publication statusPublished - 2021 Jan 12

Bibliographical note

Funding Information:
This work was supported by National Research Foundation of Korea (NRF) grants, funded by the Korean Government (MSIP) (2016R1E1A1A01941978, 2020H1D3A1A02081461, and 2020R1A4A1017737).

Publisher Copyright:
© 2020 Wiley-VCH GmbH

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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