Noble metal-free metal-organic framework-derived onion slice-type hollow cobalt sulfide nanostructures: Enhanced activity of CdS for improving photocatalytic hydrogen production

D. Praveen Kumar, Hanbit Park, Eun Hwa Kim, Sangyeob Hong, Madhusudana Gopannagari, D. Amaranatha Reddy, Tae Kyu Kim

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The hollow materials have played a significant role in cutting-edge innovations for energy conversion due to their peculiar properties and their wide range of potential applications. These materials show great promise for the development of cleaner power sources to address growing environmental concerns at a time of increasing global demand for energy. Noble metal-free MOF-derived onion slice-type hollow structured Co4S3 was developed and embedded with CdS nanoparticles for photocatalytic hydrogen production. The incorporation of Co4S3 with the CdS particles effectively accelerated charge separation and transfer in photocatalytic reactions due to the low density, hollow interior, and shell permeability of the onion-type composite. The optimized Co4S3/CdS photocatalyst led to an enhanced rate of H2 production of 12,360 μmol h−1 g−1 under simulated solar light irradiation; this value is 26-fold greater than that of the pristine CdS nanoparticles. The Co4S3/CdS composite exhibited remarkably stable photocatalytic performance for up to 65 h and could be reused in five successive cycles. Furthermore, to the best of our knowledge, this is the highest H2 production rate achieved with cobalt sulfide-based CdS nanoparticle photocatalysts in the photocatalysis of water under simulated solar light irradiation. Owing to its low cost and high efficiency, this photocatalytic system should hold great potential for the development of highly efficient photocatalytic materials for use in various fields.

Original languageEnglish
Pages (from-to)230-238
Number of pages9
JournalApplied Catalysis B: Environmental
Volume224
DOIs
Publication statusPublished - 2018 May 1

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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