Excellent photocatalytic hydrogen production over CdS nanorods via using noble metal-free copper molybdenum sulfide (Cu 2 MoS 4 ) nanosheets as co-catalysts

Sangyeob Hong, D. Praveen Kumar, D. Amaranatha Reddy, Jiha Choi, Tae Kyu Kim

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

Charge carrier recombination and durability issues are major problems in photocatalytic hydrogen (H 2 ) evolution processes. Thus, there is a very important necessitate to extend an efficient photocatalyst to control charge-carrier dynamics in the photocatalytic system. We have developed copper molybdenum sulfide (Cu 2 MoS 4 ) nanosheets as co-catalysts with CdS nanorods for controlling charge carriers without recombination for use in photocatalytic H 2 evolution under simulated solar light irradiation. Effective control and utilization of charge carriers are possible by loading Cu 2 MoS 4 nanosheets onto the CdS nanorods. The loading compensates for the restrictions of CdS, and stimulated synergistic effects, such as efficient photoexcited charge separation, lead to an improvement in photostability because of the layered structure of the Cu 2 MoS 4 nanosheets. These layered Cu 2 MoS 4 nanosheets have emerged as novel and active replacements for precious noble metal co-catalysts in photocatalytic H 2 production by water splitting. We have obtained superior H 2 production rates by using Cu 2 MoS 4 loaded CdS nanorods. The physicochemical properties of the composites are analyzed by diverse characterization techniques.

Original languageEnglish
Pages (from-to)421-429
Number of pages9
JournalApplied Surface Science
Volume396
DOIs
Publication statusPublished - 2017 Feb 28

Bibliographical note

Funding Information:
This work was supported the National Research Foundation of Korea (NRF) grants funded by the Korean government ( 2014R1A4A1001690 ), Global Research Laboratory Program [Grant No. 2009-00439 ] and Max Planck POSTECH/KOREA Research Initiative Program [Grant No. 2016K1A4A4A01922028 ] through NRF funded by Ministry of Science, ICT & Future Planning .

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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