Modulation of charge carrier pathways in CdS nanospheres by integrating MoS2 and Ni2P for improved migration and separation toward enhanced photocatalytic hydrogen evolution

Jiha Choi, D. Amaranatha Reddy, Noh Soo Han, Seonghyun Jeong, Sangyeob Hong, D. Praveen Kumar, Jae Kyu Song, Tae Kyu Kim

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)


The photocatalytic hydrogen evolution reaction using semiconductor nanostructures has received considerable attention in tackling energy and pollution problems. Although several semiconductor photocatalysts have been developed, materials satisfactory in all aspects (e.g., economical and eco-friendly with high efficiency) are still to be developed. Herein, a new and efficient noble-metal-free CdS/MoS2@Ni2P ternary nanohybrid photocatalyst is prepared using a combined hydrothermal and metal-organic framework template strategy. The designed nanostructures show an appealing hydrogen evolution rate, which is 69.29-fold higher than the bare CdS nanostructures and almost 6-fold higher than the CdS-Pt nanocomposites, with an apparent quantum efficiency of 24.4%. Furthermore, the rate enhancement factor of photocatalytic hydrogen evolution in the presence of MoS2 and Ni2P on CdS is much larger than that of several cocatalyst-modified CdS nanostructures reported earlier. The enhanced photocatalytic hydrogen evolution rate is attributed to better migration and separation efficiency in CdS/MoS2@Ni2P than bare CdS, which is supported by photoluminescence, dynamics, photocurrent, and impedance studies. We anticipate that the work presented here may open up new insights for the utilization of low-cost CdS/MoS2@Ni2P hybrid nanostructures as a substitute for noble metals for effective photocatalytic hydrogen evolution.

Original languageEnglish
Pages (from-to)641-649
Number of pages9
JournalCatalysis Science and Technology
Issue number3
Publication statusPublished - 2017

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korean government (MSIP) (2014R1A4A1001690, 2015R1A2A2A01002805 and 2016R1E1A1A01941978).

Publisher Copyright:
© The Royal Society of Chemistry 2017.

All Science Journal Classification (ASJC) codes

  • Catalysis


Dive into the research topics of 'Modulation of charge carrier pathways in CdS nanospheres by integrating MoS<sub>2</sub> and Ni<sub>2</sub>P for improved migration and separation toward enhanced photocatalytic hydrogen evolution'. Together they form a unique fingerprint.

Cite this